{"id":31067,"date":"2023-03-20T01:23:27","date_gmt":"2022-11-19T20:21:17","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%88%9b%e5%bb%bajava%e7%9a%84%e5%ad%97%e7%ac%a6%e9%9b%86\/"},"modified":"2025-08-12T22:09:20","modified_gmt":"2025-08-12T14:09:20","slug":"%e5%88%9b%e5%bb%bajava%e7%9a%84%e5%ad%97%e7%ac%a6%e9%9b%86","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%88%9b%e5%bb%bajava%e7%9a%84%e5%ad%97%e7%ac%a6%e9%9b%86\/","title":{"rendered":"\u521b\u5efaJava\u7684\u5b57\u7b26\u96c6"},"content":{"rendered":"<h1>Java\u4e2d\u7684\u5b57\u7b26\u96c6Java\u5728\u5185\u90e8\u4f7f\u7528UTF-16\u5904\u7406\u5b57\u7b26\uff0c\u5e76\u5177\u6709\u5c06UTF-16\u548c\u5176\u4ed6\u5b57\u7b26\u7f16\u7801\u4e92\u76f8\u8f6c\u6362\u7684\u529f\u80fd\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u521b\u5efa&#8221;Charset&#8221;\u7684\u65b9\u6cd5\uff0c\u5373\u521b\u5efa\u81ea\u5b9a\u4e49\u5b57\u7b26\u7f16\u7801\u8f6c\u6362\u5668\u7684\u65b9\u6cd5\u3002<\/p>\n<h1>\u521b\u5efa\u5b57\u7b26\u96c6\u7684\u6982\u8ff0\u57fa\u672c\u4e0a\uff0c\u9700\u8981\u51c6\u5907\u4ee5\u4e0b\u56db\u4e2a\u7c7b\u548c\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\uff08\u63d0\u4f9b\u8005\u914d\u7f6e\u6587\u4ef6\uff09\uff0c\u5e76\u5c06\u5176\u6dfb\u52a0\u5230\u7c7b\u8def\u5f84\u4e2d\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.nio.charset.Charset \u3092\u62e1\u5f35\u3057\u305f\u30af\u30e9\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.nio.charset.CharsetDecoder \u3092\u62e1\u5f35\u3057\u305f\u30af\u30e9\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.nio.charset.CharsetEncoder \u3092\u62e1\u5f35\u3057\u305f\u30af\u30e9\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.nio.charset.spi.CharsetProvider \u3092\u62e1\u5f35\u3057\u305f\u30af\u30e9\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">META-INF\/services\/java.nio.charset.spi.CharsetProvider<\/ul>\n<h1>\u7b49\u7ea70\uff1a\u9996\u5148\u662f\u78e8\u7ec3\u80a9\u8180\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u7528\u6700\u57fa\u672c\u7684\u51c6\u5907\u5de5\u4f5c\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u540d\u79f0\u7684\u5b57\u7b26\u96c6\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">XMS932X\u3068\u3044\u3046\u540d\u524d\u306eCharset<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u5909\u63db\u306fMS932\u3068\u5168\u304f\u540c\u3058<\/ul>\n<p>\u5728\u8fd9\u91cc\uff0c\u7531\u4e8e\u5b9e\u9645\u7684\u8f6c\u6362\u662f\u901a\u8fc7\u73b0\u6709\u7684MS932\u8f6c\u6362\u5668\u5b8c\u6210\u7684\uff0c\u6240\u4ee5\u4e0d\u9700\u8981\u521b\u5efaDecoder\/Encoder\u3002\u6211\u4eec\u53ea\u9700\u8981\u4e00\u4e2aCharsetProvider\u548c\u4e00\u4e2a\u63d0\u4f9b\u7a0b\u5e8f\u914d\u7f6e\u6587\u4ef6\uff08\u5373\u4e0a\u9762\u5217\u8868\u4e2d\u7684\u6700\u540e\u4e24\u4e2a\uff09\u3002<\/p>\n<p>\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u7ee7\u627f\u81eaCharsetProvider\u7684\u7c7b\uff0c\u5982\u4e0b\u6240\u793a\u3002\u4ed4\u7ec6\u67e5\u770b\u4ee3\u7801\uff0c\u60a8\u4f1a\u53d1\u73b0\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2aMS932 Charset\u5bf9\u8c61\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">mycode<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.*<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.spi.CharsetProvider<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.util.*<\/span> <span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">XMS932XProvider<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">CharsetProvider<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">list<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">Iterator<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">&gt;<\/span> <span class=\"nf\">getIter<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">list<\/span> <span class=\"o\">==<\/span> <span class=\"kc\">null<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"n\">list<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">ArrayList<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n      <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">add<\/span><span class=\"o\">(<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">.<\/span><span class=\"na\">forName<\/span><span class=\"o\">(<\/span><span class=\"s\">\"MS932\"<\/span><span class=\"o\">))<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"o\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">iterator<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">Iterator<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">&gt;<\/span> <span class=\"nf\">charsets<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"nf\">getIter<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">Charset<\/span> <span class=\"nf\">charsetForName<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">charsetName<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"s\">\"XMS932X\"<\/span><span class=\"o\">.<\/span><span class=\"na\">equals<\/span><span class=\"o\">(<\/span><span class=\"n\">charsetName<\/span><span class=\"o\">)<\/span> \r\n        <span class=\"o\">||<\/span> <span class=\"s\">\"MS932\"<\/span><span class=\"o\">.<\/span><span class=\"na\">equals<\/span><span class=\"o\">(<\/span><span class=\"n\">charsetName<\/span><span class=\"o\">))<\/span> <span class=\"k\">return<\/span> <span class=\"o\">(<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">)<\/span><span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"mi\">0<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n\t<span class=\"k\">return<\/span> <span class=\"kc\">null<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u53e6\u5916\uff0c\u60a8\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u4f9b\u5e94\u5546\u914d\u7f6e\u6587\u4ef6\u3002\u8bf7\u5728\u4ee5\u4e0b\u6587\u4ef6\u540d\u4e2d\u5305\u542b\u60a8\u521b\u5efa\u7684CharsetProvider\u7684\u540d\u79f0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">mycode.XMS932XProvider<\/span>\r\n<\/code><\/pre>\n<p>\u7f16\u8bd1\u4e0a\u8ff0Java\u7a0b\u5e8f\u540e\uff0c\u5c06\u5176\u6253\u5305\u6210jar\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>javac mycode\/XMS932XProvider.java\r\njar cvf xms932x.jar META-INF\/services\/java.nio.charset.spi.CharsetProvider mycode\/XMS932XProvider.class\r\n<\/code><\/pre>\n<p>\u5982\u679c\u5c06\u8fd9\u4e2a\u751f\u6210\u7684 xms932x.jar \u6dfb\u52a0\u5230\u7c7b\u8def\u5f84\u4e2d\uff0c\u5c31\u53ef\u4ee5\u5b89\u5168\u5730\u4f7f\u7528\u540d\u4e3a XMS932X \u7684\u5b57\u7b26\u96c6\u3002\u5f53\u7136\u4e86\uff0c\u5b83\u4f1a\u6267\u884c\u5b8c\u5168\u76f8\u540c\u7684 MS932 \u5b57\u7b26\u7f16\u7801\u8f6c\u6362\u3002<\/p>\n<h1>\u4e00\u7ea7\u6c34\u5e73\uff1a\u5148\u8bd5\u7740\u5b9e\u73b0\u56db\u4e2a\u7c7b<br \/>\n\u7136\u540e\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aXMS932XX\u7684\u5b57\u7b26\u96c6\u3002\u548c\u4e0a\u9762\u7684Level 0\u4e00\u6837\uff0c\u5b83\u4ecd\u7136\u6267\u884cMS932\u8f6c\u6362\u3002<\/p>\n<p>\u7136\u800c\uff0c\u6211\u4eec\u5728\u8fd9\u91cc\u51c6\u5907\u4e86\u5b9e\u9645\u4e0a\u7528\u4e8e\u8f6c\u6362\u5b57\u7b26\u4e32\u6570\u636e\u7684\u4e3b\u4f53\uff0c\u5373CharsetDecode\/CharsetEncoder\u7684\u5b9e\u73b0\uff0c\u5728\u5176\u4e2d\u8c03\u7528MS932\u8f6c\u6362\u3002<\/p>\n<p>\u9996\u5148\uff0c\u51c6\u5907\u4e00\u4e2a\u6269\u5c55\u4e86CharsetEncoder\u7684\u7c7b\uff0c\u5982\u4e0b\u6240\u793a\u3002\u53ea\u9700\u5b9e\u73b0encoderLoop\u65b9\u6cd5\u3002\u901a\u8fc7\u67e5\u770bencodeLoop\u7684\u53c2\u6570\uff0c\u60a8\u53ef\u4ee5\u4e86\u89e3\u5230\u5b83\u662f\u4eceCharBuffer\u8bfb\u53d6\u5b57\u7b26\u5e76\u5c06\u5176\u4f5c\u4e3a\u5b57\u8282\u5e8f\u5217\u8f93\u51fa\u5230ByteBuffer\u7684\u65b9\u6cd5\u3002\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u8c03\u7528\u4e86MS932\u7684\u7f16\u7801\u5668\u5e76\u76f4\u63a5\u4f7f\u7528\u4e86\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">mycode<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.*<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.*<\/span> <span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">XMS932XXEncoder<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">CharsetEncoder<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">protected<\/span> <span class=\"nf\">XMS932XXEncoder<\/span><span class=\"o\">(<\/span><span class=\"nc\">Charset<\/span> <span class=\"n\">cs<\/span><span class=\"o\">,<\/span> <span class=\"kt\">float<\/span> <span class=\"n\">averageCharsPerByte<\/span><span class=\"o\">,<\/span> <span class=\"kt\">float<\/span> <span class=\"n\">maxCharsPerByte<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">super<\/span><span class=\"o\">(<\/span><span class=\"n\">cs<\/span><span class=\"o\">,<\/span> <span class=\"n\">averageCharsPerByte<\/span><span class=\"o\">,<\/span><span class=\"n\">maxCharsPerByte<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">protected<\/span> <span class=\"nc\">CoderResult<\/span> <span class=\"nf\">encodeLoop<\/span><span class=\"o\">(<\/span><span class=\"nc\">CharBuffer<\/span> <span class=\"n\">in<\/span><span class=\"o\">,<\/span> <span class=\"nc\">ByteBuffer<\/span> <span class=\"n\">out<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">Charset<\/span> <span class=\"n\">charset<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Charset<\/span><span class=\"o\">.<\/span><span class=\"na\">forName<\/span><span class=\"o\">(<\/span><span class=\"s\">\"MS932\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"nc\">CharsetEncoder<\/span> <span class=\"n\">ce<\/span> <span class=\"o\">=<\/span> <span class=\"n\">charset<\/span><span class=\"o\">.<\/span><span class=\"na\">newEncoder<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"n\">ce<\/span><span class=\"o\">.<\/span><span class=\"na\">reset<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">ce<\/span><span class=\"o\">.<\/span><span class=\"na\">encode<\/span><span class=\"o\">(<\/span><span class=\"n\">in<\/span><span class=\"o\">,<\/span> <span class=\"n\">out<\/span><span class=\"o\">,<\/span> <span class=\"kc\">false<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u540c\u6837\u5730\uff0c\u6211\u4eec\u51c6\u5907\u4e86\u4e00\u4e2a\u6269\u5c55CharsetDecoder\u7684\u7c7b\u3002\u5f53\u60a8\u67e5\u770bdecodeLoop\u65f6\uff0c\u53ef\u4ee5\u770b\u5230\u4e0e\u4e4b\u524d\u76f8\u53cd\u7684\u662f\uff0c\u5b83\u662f\u4e00\u4e2a\u5c06\u5b57\u8282\u5e8f\u5217\u8bfb\u53d6\u5e76\u8f93\u51fa\u4e3a\u5b57\u7b26\u7684\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">mycode<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.*<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.*<\/span> <span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">XMS932XXDecoder<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">CharsetDecoder<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">protected<\/span> <span class=\"nf\">XMS932XXDecoder<\/span><span class=\"o\">(<\/span><span class=\"nc\">Charset<\/span> <span class=\"n\">cs<\/span><span class=\"o\">,<\/span> <span class=\"kt\">float<\/span> <span class=\"n\">averageCharsPerByte<\/span><span class=\"o\">,<\/span> <span class=\"kt\">float<\/span> <span class=\"n\">maxCharsPerByte<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">super<\/span><span class=\"o\">(<\/span><span class=\"n\">cs<\/span><span class=\"o\">,<\/span> <span class=\"n\">averageCharsPerByte<\/span><span class=\"o\">,<\/span><span class=\"n\">maxCharsPerByte<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">protected<\/span> <span class=\"nc\">CoderResult<\/span> <span class=\"nf\">decodeLoop<\/span><span class=\"o\">(<\/span><span class=\"nc\">ByteBuffer<\/span> <span class=\"n\">in<\/span><span class=\"o\">,<\/span> <span class=\"nc\">CharBuffer<\/span> <span class=\"n\">out<\/span><span class=\"o\">){<\/span>\r\n    <span class=\"nc\">Charset<\/span> <span class=\"n\">charset<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Charset<\/span><span class=\"o\">.<\/span><span class=\"na\">forName<\/span><span class=\"o\">(<\/span><span class=\"s\">\"MS932\"<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"nc\">CharsetDecoder<\/span> <span class=\"n\">cd<\/span> <span class=\"o\">=<\/span> <span class=\"n\">charset<\/span><span class=\"o\">.<\/span><span class=\"na\">newDecoder<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"n\">cd<\/span><span class=\"o\">.<\/span><span class=\"na\">reset<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">cd<\/span><span class=\"o\">.<\/span><span class=\"na\">decode<\/span><span class=\"o\">(<\/span><span class=\"n\">in<\/span><span class=\"o\">,<\/span> <span class=\"n\">out<\/span><span class=\"o\">,<\/span> <span class=\"kc\">false<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a\u6269\u5c55Charset\u7684\u7c7b\u3002\u5728\u5176\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528newDecoder\/newEncoder\u65b9\u6cd5\u6765\u521b\u5efa\u5e76\u8fd4\u56de\u76f8\u5e94\u7684Decoder\/Encoder\u5b9e\u4f8b\u3002\u6784\u9020\u51fd\u6570\u4e2d\u7684\u4e24\u4e2a\u53c2\u6570 (float)2 \u5206\u522b\u8868\u793a\u5b57\u8282\u5e8f\u5217\uff08\u672c\u673a\u4ee3\u7801\uff09\u8f6c\u6362\u4e3a\u5e73\u5747\u5b57\u8282\u6570\u548c\u6700\u5927\u5b57\u8282\u6570\u3002\u7531\u4e8eMS932\u662fSJIS\u7f16\u7801\uff0c\u6240\u4ee5\u4e00\u4e2a\u5b57\u7b26\u6700\u591a\u5360\u75282\u4e2a\u5b57\u8282\uff0c\u56e0\u6b64\u6211\u4eec\u6307\u5b9a2\u3002\u5e73\u5747\u503c\u53ef\u80fd\u53ef\u4ee5\u66f4\u5c0f\u3002<\/p>\n<p>contains\u65b9\u6cd5\u5c06\u8fd4\u56detrue\uff0c\u5982\u679c\u6307\u5b9a\u7684Charset\u7684\u8f6c\u6362\u5305\u542b\u5728\u5176\u4e2d\u3002\u5f53\u7136\uff0c\u5b83\u4e5f\u9700\u8981\u5305\u542b\u5b83\u81ea\u5df1\u3002\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u4e5f\u8bb8\u53ef\u4ee5\u5305\u542bMS932\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">mycode<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.*<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.*<\/span> <span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">XMS932XX<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Charset<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"nf\">XMS932XX<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">s<\/span><span class=\"o\">,<\/span> <span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">ss<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n\t<span class=\"kd\">super<\/span><span class=\"o\">(<\/span><span class=\"n\">s<\/span><span class=\"o\">,<\/span> <span class=\"n\">ss<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">boolean<\/span> <span class=\"nf\">contains<\/span><span class=\"o\">(<\/span><span class=\"nc\">Charset<\/span> <span class=\"n\">cs<\/span><span class=\"o\">)<\/span>  <span class=\"o\">{<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">cs<\/span> <span class=\"k\">instanceof<\/span> <span class=\"no\">XMS932XX<\/span><span class=\"o\">)<\/span> <span class=\"k\">return<\/span> <span class=\"kc\">true<\/span> <span class=\"o\">;<\/span>\r\n      <span class=\"k\">return<\/span> <span class=\"kc\">false<\/span> <span class=\"o\">;<\/span> \r\n    <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">CharsetDecoder<\/span> <span class=\"nf\">newDecoder<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"k\">new<\/span> <span class=\"nf\">XMS932XXDecoder<\/span><span class=\"o\">(<\/span><span class=\"k\">this<\/span><span class=\"o\">,<\/span> <span class=\"o\">(<\/span><span class=\"kt\">float<\/span><span class=\"o\">)<\/span><span class=\"mi\">2<\/span><span class=\"o\">,<\/span> <span class=\"o\">(<\/span><span class=\"kt\">float<\/span><span class=\"o\">)<\/span><span class=\"mi\">2<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">CharsetEncoder<\/span> <span class=\"nf\">newEncoder<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n\t<span class=\"k\">return<\/span> <span class=\"k\">new<\/span> <span class=\"nf\">XMS932XXEncoder<\/span><span class=\"o\">(<\/span><span class=\"k\">this<\/span><span class=\"o\">,<\/span> <span class=\"o\">(<\/span><span class=\"kt\">float<\/span><span class=\"o\">)<\/span><span class=\"mi\">2<\/span><span class=\"o\">,<\/span> <span class=\"o\">(<\/span><span class=\"kt\">float<\/span><span class=\"o\">)<\/span><span class=\"mi\">2<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u6269\u5c55\u4e86CharsetProvider\u7684\u7c7b\u3002<br \/>\n\u5728\u7ea7\u522b\u96f6\u65f6\uff0c\u5b83\u8fd4\u56de\u4e00\u4e2a &#8220;MS932&#8221; \u7684\u5b9e\u4f8b\u4f5c\u4e3aCharset\uff0c\u4f46\u5728\u8fd9\u91cc\u6211\u4eec\u5c06\u8fd4\u56de\u4e00\u4e2aXMS932XX\u7684\u5b9e\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">mycode<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.*<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.spi.CharsetProvider<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.util.*<\/span> <span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">XMS932XXProvider<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">CharsetProvider<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">list<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">Iterator<\/span> <span class=\"n\">ite<\/span> <span class=\"o\">=<\/span> <span class=\"n\">getIter<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">Iterator<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">&gt;<\/span> <span class=\"nf\">getIter<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">list<\/span> <span class=\"o\">==<\/span> <span class=\"kc\">null<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"n\">list<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">ArrayList<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n      <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">add<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"no\">XMS932XX<\/span><span class=\"o\">(<\/span><span class=\"s\">\"XMS932XX\"<\/span><span class=\"o\">,<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">String<\/span><span class=\"o\">[]{<\/span><span class=\"s\">\"XMS932XX\"<\/span><span class=\"o\">}))<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"o\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">iterator<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">Iterator<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">&gt;<\/span> <span class=\"nf\">charsets<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"nf\">getIter<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n  \r\n  <span class=\"kd\">public<\/span> <span class=\"nc\">Charset<\/span> <span class=\"nf\">charsetForName<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">charsetName<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"s\">\"XMS932XX\"<\/span><span class=\"o\">.<\/span><span class=\"na\">equals<\/span><span class=\"o\">(<\/span><span class=\"n\">charsetName<\/span><span class=\"o\">))<\/span> <span class=\"k\">return<\/span> <span class=\"o\">(<\/span><span class=\"nc\">Charset<\/span><span class=\"o\">)<\/span><span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"mi\">0<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n\t<span class=\"k\">return<\/span> <span class=\"kc\">null<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6700\u540e\uff0c\u6211\u4eec\u8981\u51c6\u5907\u4f9b\u5e94\u5546\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">mycode.XMS932XXProvider<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5c06\u6bcf\u4e2aJava\u6587\u4ef6\u7f16\u8bd1\u540e\u6253\u5305\u6210Jar\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>javac mycode\/XMS932XX<span class=\"k\">*<\/span>.java\r\njar cvf xms932xx.jar META-INF\/services\/java.nio.charset.spi.CharsetProvider mycode\/XMS932XX<span class=\"k\">*<\/span>.class\r\n<\/code><\/pre>\n<p>\u5982\u679c\u5c06\u8fd9\u4e2a\u540d\u4e3axms932xx.jar\u7684\u6587\u4ef6\u5305\u542b\u5728\u7c7b\u8def\u5f84\u4e2d\uff0c\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528\u540d\u4e3aXMS932XX\u7684\u5b57\u7b26\u96c6\u4e86\u3002\u5b9e\u9645\u4e0a\uff0c\u5b83\u4e0eMS932\u7684\u8f6c\u6362\u5b8c\u5168\u76f8\u540c\u3002\u4f46\u662f\uff0c\u901a\u8fc7\u51c6\u5907\u89e3\u7801\u5668\/\u7f16\u7801\u5668\uff0c\u60a8\u53ef\u80fd\u5bf9\u5b9e\u9645\u5b9e\u73b0\u7684\u65b9\u6cd5\u6709\u4e86\u4e00\u5b9a\u7684\u4e86\u89e3\u3002<\/p>\n<h1>\u7b49\u7ea72\uff1a\u5b9e\u65bd\u72ec\u7279\u7684\uff08\u5c0f\u7684\uff09\u8f6c\u6362\uff01<br \/>\n\u7406\u89e3\u4e86\u673a\u5236\u540e\uff0c\u8ba9\u6211\u4eec\u6765\u521b\u5efa\u4e00\u4e2a\u80fd\u591f\u5b9e\u9645\u8fdb\u884c\u72ec\u7279\u8f6c\u6362\u7684Charset\u3002<br \/>\n\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u8003\u8651\u5c06\u534a\u89d2\u7247\u5047\u540d\u8f6c\u6362\u4e3a\u5168\u89d2\u7247\u5047\u540d\uff0c\u6765\u5b9e\u73b0\u4ece\u672c\u5730\u4ee3\u7801\uff08MS932\uff09\u5230Unicode\u7684\u8f6c\u6362\u3002<\/p>\n<p>\u56e0\u4e3a\u4ece\u5934\u51c6\u5907\u6240\u6709\u6587\u4ef6\u5f88\u9ebb\u70e6\uff0c\u6240\u4ee5\u6211\u4eec\u6765\u4fee\u6539\u5728Level 1\u521b\u5efa\u7684XMS932XX\u3002\u8981\u6539\u9020\u54ea\u4e2a\u90e8\u5206\u5462\uff1f\u5f53\u7136\u662fDecoder\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">mycode<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.*<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.charset.spi.CharsetProvider<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.nio.*<\/span> <span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.io.*<\/span> <span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">XMS932XXDecoder<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">CharsetDecoder<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">static<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">hankana<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\uff71\uff72\uff73\uff74\uff75\uff76\uff77\uff78\uff79\uff7a\uff7b\uff7c\uff7d\uff7e\uff7f\uff80\uff81\uff82\uff83\uff84\uff85\uff86\uff87\uff88\uff89\uff8a\uff8b\uff8c\uff8d\uff8e\uff8f\uff90\uff91\uff92\uff93\uff94\uff95\uff96\uff97\uff98\uff99\uff9a\uff9b\uff9c\uff66\uff9d\uff9f\uff9e\"<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"kd\">static<\/span> <span class=\"kd\">final<\/span> <span class=\"kt\">char<\/span><span class=\"o\">[]<\/span> <span class=\"n\">zenkana<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u30a2\u30a4\u30a6\u30a8\u30aa\u30ab\u30ad\u30af\u30b1\u30b3\u30b5\u30b7\u30b9\u30bb\u30bd\u30bf\u30c1\u30c4\u30c6\u30c8\u30ca\u30cb\u30cc\u30cd\u30ce\u30cf\u30d2\u30d5\u30d8\u30db\u30de\u30df\u30e0\u30e1\u30e2\u30e4\u30e6\u30e8\u30e9\u30ea\u30eb\u30ec\u30ed\u30ef\u30f2\u30f3\u309b\u309c\"<\/span><span class=\"o\">.<\/span><span class=\"na\">toCharArray<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n\r\n  <span class=\"kd\">protected<\/span> <span class=\"nf\">XMS932XXDecoder<\/span><span class=\"o\">(<\/span><span class=\"nc\">Charset<\/span> <span class=\"n\">cs<\/span><span class=\"o\">,<\/span> <span class=\"kt\">float<\/span> <span class=\"n\">averageCharsPerByte<\/span><span class=\"o\">,<\/span> <span class=\"kt\">float<\/span> <span class=\"n\">maxCharsPerByte<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">super<\/span><span class=\"o\">(<\/span><span class=\"n\">cs<\/span><span class=\"o\">,<\/span> <span class=\"n\">averageCharsPerByte<\/span><span class=\"o\">,<\/span><span class=\"n\">maxCharsPerByte<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">protected<\/span> <span class=\"nc\">CoderResult<\/span> <span class=\"nf\">decodeLoop<\/span><span class=\"o\">(<\/span><span class=\"nc\">ByteBuffer<\/span> <span class=\"n\">in<\/span><span class=\"o\">,<\/span> <span class=\"nc\">CharBuffer<\/span> <span class=\"n\">out<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">Charset<\/span> <span class=\"n\">charset<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Charset<\/span><span class=\"o\">.<\/span><span class=\"na\">forName<\/span><span class=\"o\">(<\/span><span class=\"s\">\"MS932\"<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"nc\">CharsetDecoder<\/span> <span class=\"n\">cd<\/span> <span class=\"o\">=<\/span> <span class=\"n\">charset<\/span><span class=\"o\">.<\/span><span class=\"na\">newDecoder<\/span><span class=\"o\">()<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"nc\">CharBuffer<\/span> <span class=\"n\">tmp<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">CharBuffer<\/span><span class=\"o\">.<\/span><span class=\"na\">allocate<\/span><span class=\"o\">(<\/span><span class=\"n\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">remaining<\/span><span class=\"o\">())<\/span> <span class=\"o\">;<\/span><span class=\"c1\">\/\/\u4e00\u65e6\u3053\u3053\u306b\u5909\u63db<\/span>\r\n\r\n    <span class=\"c1\">\/\/\u3053\u306e\u30eb\u30fc\u30d7\u3067\u3067\u304d\u308b\u3060\u3051in\u3092tmp\u306bMS932\u5909\u63db\u3059\u308b<\/span>\r\n    <span class=\"k\">while<\/span> <span class=\"o\">(<\/span><span class=\"n\">in<\/span><span class=\"o\">.<\/span><span class=\"na\">hasRemaining<\/span><span class=\"o\">())<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">in<\/span><span class=\"o\">.<\/span><span class=\"na\">remaining<\/span><span class=\"o\">()<\/span> <span class=\"o\">==<\/span> <span class=\"mi\">1<\/span> <span class=\"o\">&amp;&amp;<\/span>\r\n          <span class=\"o\">((<\/span><span class=\"kt\">int<\/span><span class=\"o\">)(<\/span><span class=\"n\">in<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"n\">in<\/span><span class=\"o\">.<\/span><span class=\"na\">position<\/span><span class=\"o\">()))&amp;<\/span><span class=\"mh\">0xff<\/span><span class=\"o\">)&gt;<\/span><span class=\"mh\">0x80<\/span><span class=\"o\">)<\/span> <span class=\"k\">break<\/span> <span class=\"o\">;<\/span><span class=\"c1\">\/\/SJIS1\u30d0\u30a4\u30c8\u76ee\u3060\u3051\u6b8b\u3063\u305f\u5834\u5408<\/span>\r\n      <span class=\"nc\">CoderResult<\/span> <span class=\"n\">result<\/span> <span class=\"o\">=<\/span> <span class=\"n\">cd<\/span><span class=\"o\">.<\/span><span class=\"na\">decode<\/span><span class=\"o\">(<\/span><span class=\"n\">in<\/span><span class=\"o\">,<\/span> <span class=\"n\">tmp<\/span><span class=\"o\">,<\/span> <span class=\"kc\">false<\/span><span class=\"o\">);<\/span>\r\n      <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">result<\/span><span class=\"o\">.<\/span><span class=\"na\">isError<\/span><span class=\"o\">())<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">result<\/span><span class=\"o\">;<\/span>\r\n      <span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">result<\/span><span class=\"o\">.<\/span><span class=\"na\">isOverflow<\/span><span class=\"o\">())<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"k\">break<\/span><span class=\"o\">;<\/span>\r\n      <span class=\"o\">}<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"n\">tmp<\/span><span class=\"o\">.<\/span><span class=\"na\">flip<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"n\">pos<\/span> <span class=\"o\">=<\/span> <span class=\"o\">-<\/span><span class=\"mi\">1<\/span> <span class=\"o\">;<\/span>\r\n\r\n    <span class=\"c1\">\/\/\u534a\u89d2\u30ab\u30ca\u3092\u898b\u3064\u3051\u305f\u3089\u5168\u89d2\u30ab\u30ca\u306b\u7f6e\u304d\u63db\u3048\u3066\u51fa\u529b<\/span>\r\n    <span class=\"k\">while<\/span> <span class=\"o\">(<\/span><span class=\"n\">tmp<\/span><span class=\"o\">.<\/span><span class=\"na\">hasRemaining<\/span><span class=\"o\">())<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"kt\">char<\/span> <span class=\"n\">c<\/span> <span class=\"o\">=<\/span> <span class=\"n\">tmp<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">();<\/span>\r\n      <span class=\"k\">if<\/span> <span class=\"o\">((<\/span><span class=\"n\">pos<\/span> <span class=\"o\">=<\/span> <span class=\"n\">hankana<\/span><span class=\"o\">.<\/span><span class=\"na\">indexOf<\/span><span class=\"o\">(<\/span><span class=\"n\">c<\/span><span class=\"o\">))<\/span> <span class=\"o\">&gt;=<\/span> <span class=\"mi\">0<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"n\">c<\/span> <span class=\"o\">=<\/span> <span class=\"n\">zenkana<\/span><span class=\"o\">[<\/span><span class=\"n\">pos<\/span><span class=\"o\">]<\/span> <span class=\"o\">;<\/span>\r\n      <span class=\"o\">}<\/span>\r\n      <span class=\"n\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"n\">c<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"c1\">\/\/out\u304c\u3044\u3063\u3071\u3044\u306e\u3068\u304d\u306fOVERFLOW\u3001in\u306e\u6b8b\u308a\u304c\u7121\u3044\u3068\u304d\u306fUNDERFLOW<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">remaining<\/span><span class=\"o\">()==<\/span><span class=\"mi\">0<\/span><span class=\"o\">)<\/span> <span class=\"k\">return<\/span> <span class=\"nc\">CoderResult<\/span><span class=\"o\">.<\/span><span class=\"na\">OVERFLOW<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"k\">else<\/span> <span class=\"k\">return<\/span> <span class=\"nc\">CoderResult<\/span><span class=\"o\">.<\/span><span class=\"na\">UNDERFLOW<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u56e0\u4e3a\u6709\u70b9\u590d\u6742\uff0c\u6240\u4ee5\u6211\u5c06\u89e3\u91ca\u4e00\u4e0bdecodeLoop\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5728\u7b2c\u4e00\u4e2awhile\u5757\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528MS932\u8f6c\u6362\u5668\u5c06\u7ed9\u5b9a\u7684\u5b57\u8282\u5e8f\u5217in\u8f6c\u6362\u4e3aCharBuffer tmp\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662fwhile\u540e\u9762\u7684if\u8bed\u53e5\uff0c\u5982\u679c\u6ca1\u6709\u5b83\uff0c\u53ef\u80fd\u4f1a\u9677\u5165\u65e0\u9650\u5faa\u73af\u3002\u8be5while\u5757\u7684\u9000\u51fa\u6761\u4ef6\u662f<\/p>\n<ol>\u5f53\u4ecein\u4e2d\u8bfb\u53d6\u7684\u6570\u636e\u7528\u5b8c\u65f6\uff0c\u6216\u8005\u5f53tmp\u88ab\u586b\u6ee1\u65f6\uff0c\u6216\u8005\u51fa\u73b0\u9519\u8bef\u65f6\u3002<\/ol>\n<p>\u5982\u679cin\u7684\u6570\u636e\u4ee5SJIS\u7684\u4e24\u5b57\u8282\u5b57\u7b26\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\u7ed3\u5c3e\uff0c\u90a3\u4e48\u5728MS932\u89e3\u7801\u65f6\u65e0\u6cd5\u5b8c\u5168\u89e3\u7801in\u7684\u6570\u636e\uff0c\u5bfc\u81f4in\u8fd8\u5269\u4e0b\u4e00\u4e2a\u5b57\u7b26\uff0c\u800ctmp\u4e5f\u4e0d\u6ee1\uff0c\u5e76\u4e14\u6ca1\u6709\u9519\u8bef\u53d1\u751f\uff0c\u8fd9\u4e2a\u60c5\u51b5\u4e0d\u6ee1\u8db3\u7ed3\u675f\u6761\u4ef6\u3002\u56e0\u6b64\uff0c\u5728\u8be5if\u8bed\u53e5\u4e2d\uff0c\u5982\u679c\u5269\u4e0b\u4e00\u4e2a\u5b57\u8282\uff0c\u5e76\u4e14\u786e\u5b9a\u662f\u4e24\u5b57\u8282\u5b57\u7b26\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\uff08\u5927\u4e8e0x80\uff09\uff0c\u5219\u4ecewhile\u5faa\u73af\u4e2d\u9000\u51fa\u3002<\/p>\n<p>\u7b2c\u4e8c\u4e2a while \u5faa\u73af\u9010\u4e2a\u68c0\u67e5\u7ecf\u8fc7 MS932 \u8f6c\u6362\u7684\u5b57\u7b26\u4e32\uff0c\u5982\u679c\u662f\u534a\u89d2\u7247\u5047\u540d\uff0c\u5219\u8f93\u51fa\u5bf9\u5e94\u7684\u5168\u89d2\u7247\u5047\u540d\u5230 out\uff0c\u5426\u5219\u5c06\u8be5\u5b57\u7b26\u76f4\u63a5\u8f93\u51fa\u5230 out\u3002<\/p>\n<p>\u901a\u8fc7\u7f16\u8bd1\u8fd9\u4e2a\u7c7b\uff0c\u5e76\u5c06\u5176\u6253\u5305\u4e3axms932xx.jar\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528XMS932XX Charset\u6765\u5c06\u534a\u89d2\u5047\u540d\u8f6c\u6362\u4e3a\u5168\u89d2\u5047\u540d\u3002<\/p>\n<p>\u53ef\u4ee5\u51c6\u5907\u4e00\u4e2a\u5305\u542b\u534a\u89d2\u7247\u5047\u540d\u7684\u6587\u672c\u6587\u4ef6\uff0c\u5e76\u901a\u8fc7XMS932XX\u8fdb\u884c\u8f6c\u6362\uff0c\u786e\u8ba4\u5b83\u4f1a\u88ab\u8f6c\u6362\u4e3a\u5168\u89d2\u7247\u5047\u540d\u3002<\/p>\n<pre class=\"post-pre\"><code>\u30a2\u30a4\u30a6\u30a8\u30aa\uff71\uff72\uff73\uff74\uff75\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">java.io.*<\/span> <span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Test<\/span><span class=\"o\">{<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">Exception<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">String<\/span> <span class=\"n\">enc<\/span> <span class=\"o\">=<\/span> <span class=\"o\">(<\/span> <span class=\"n\">args<\/span><span class=\"o\">.<\/span><span class=\"na\">length<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">0<\/span> <span class=\"o\">?<\/span> <span class=\"n\">args<\/span><span class=\"o\">[<\/span><span class=\"mi\">0<\/span><span class=\"o\">]<\/span> <span class=\"o\">:<\/span> <span class=\"s\">\"XMS932XX\"<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"nc\">String<\/span> <span class=\"n\">line<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"nc\">BufferedReader<\/span> <span class=\"n\">r<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">BufferedReader<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">InputStreamReader<\/span><span class=\"o\">(<\/span><span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">in<\/span><span class=\"o\">,<\/span> <span class=\"n\">enc<\/span><span class=\"o\">))<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"k\">while<\/span><span class=\"o\">((<\/span><span class=\"n\">line<\/span> <span class=\"o\">=<\/span> <span class=\"n\">r<\/span><span class=\"o\">.<\/span><span class=\"na\">readLine<\/span><span class=\"o\">())<\/span> <span class=\"o\">!=<\/span> <span class=\"kc\">null<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"line = \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">line<\/span><span class=\"o\">)<\/span> <span class=\"o\">;<\/span>\r\n    <span class=\"o\">}<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6267\u884c\u7ed3\u679c<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>java <span class=\"nt\">-cp<\/span> xms932xx.jar:. Test XMS932XX &lt; input-sjis.txt\r\nline <span class=\"o\">=<\/span> \u30a2\u30a4\u30a6\u30a8\u30aa\u30a2\u30a4\u30a6\u30a8\u30aa\r\n<\/code><\/pre>\n<h1>\u7ed3\u5c3e<br \/>\n\u4ee5\u524d\uff0c\u6211\u8bb0\u5f97\u5728\u641c\u7d22\u7f51\u7edc\u65f6\u4f1a\u5076\u5c14\u627e\u5230\u4e00\u4e9b\u6709\u5173\u521b\u5efaJava\u7684Charset\u7684\u4fe1\u606f\uff0c\u4f46\u6700\u8fd1\u5f88\u5c11\u89c1\u5230\u4e86\uff0c\u5373\u4f7f\u641c\u7d22\u4e5f\u627e\u4e0d\u5230\uff0c\u6240\u4ee5\u6211\u5c31\u5199\u4e86\u4e0b\u6765\u3002\u5e0c\u671b\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u4e2d\u7684\u5b57\u7b26\u96c6Java\u5728\u5185\u90e8\u4f7f\u7528UTF-16\u5904\u7406\u5b57\u7b26\uff0c\u5e76\u5177\u6709\u5c06UTF-16\u548c\u5176\u4ed6\u5b57\u7b26\u7f16\u7801\u4e92\u76f8\u8f6c\u6362\u7684\u529f\u80fd\u3002\u672c [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31067","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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