{"id":878,"date":"2022-12-14T04:50:16","date_gmt":"2023-11-02T20:14:42","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/java%e4%b8%ad%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%bd%ac%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%ef%bc%8c%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%e8%bd%ac%e5%ad%97%e7%ac%a6%e4%b8%b2\/"},"modified":"2025-08-03T14:39:57","modified_gmt":"2025-08-03T06:39:57","slug":"java%e4%b8%ad%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%bd%ac%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%ef%bc%8c%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%e8%bd%ac%e5%ad%97%e7%ac%a6%e4%b8%b2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e4%b8%ad%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%bd%ac%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%ef%bc%8c%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%e8%bd%ac%e5%ad%97%e7%ac%a6%e4%b8%b2\/","title":{"rendered":"Java\u5b57\u7b26\u4e32\u4e0e\u5b57\u8282\u6570\u7ec4\u4e92\u8f6c\u6559\u7a0b\uff1a\u8be6\u89e3\u7f16\u7801\u8f6c\u6362\u65b9\u6cd5\u53ca\u5e38\u89c1\u95ee\u9898"},"content":{"rendered":"<h1>Java\u4e2d\u7684\u5b57\u7b26\u4e32\u8f6c\u5b57\u8282\u6570\u7ec4\uff0c\u5b57\u8282\u6570\u7ec4\u8f6c\u5b57\u7b26\u4e32<\/h1>\n<p>\u4eca\u5929\u6211\u4eec\u5c06\u5b66\u4e60\u5982\u4f55\u5728Java\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u3002\u6211\u4eec\u8fd8\u5c06\u5b66\u4e60\u5982\u4f55\u5728Java\u4e2d\u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/p>\n<h2>\u5b57\u7b26\u4e32\u8f6c\u4e3a\u5b57\u8282\u6570\u7ec4<\/h2>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528String\u7c7b\u7684getBytes()\u65b9\u6cd5\uff0c\u4f7f\u7528\u5e73\u53f0\u9ed8\u8ba4\u7684\u5b57\u7b26\u96c6\u5c06\u5b57\u7b26\u4e32\u7f16\u7801\u4e3a\u4e00\u7cfb\u5217\u5b57\u8282\u3002\u8fd9\u4e2a\u65b9\u6cd5\u662f\u91cd\u8f7d\u7684\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f20\u9012Charset\u4f5c\u4e3a\u53c2\u6570\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u7a0b\u5e8f\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728Java\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.util;\r\n\r\nimport java.util.Arrays;\r\n\r\npublic class StringToByteArray {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tString str = \"PANKAJ\";\r\n\t\tbyte[] byteArr = str.getBytes();\r\n\t\t\/\/ \u6253\u5370\u5b57\u8282\u6570\u7ec4\u5143\u7d20\r\n\t\tSystem.out.println(\"\u5b57\u7b26\u4e32\u8f6c\u5b57\u8282\u6570\u7ec4: \" + Arrays.toString(byteArr));\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u56fe\u7247\u5c55\u793a\u4e86\u6211\u4eec\u8fd0\u884c\u4ee5\u4e0a\u7a0b\u5e8f\u65f6\u7684\u8f93\u51fa\u3002\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\u5b57\u8282\u6570\u7ec4\u3002<\/p>\n<pre class=\"post-pre\"><code>byte[] byteArr = str.getBytes(\"UTF-8\");\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u5982\u679c\u6211\u4eec\u63d0\u4f9b\u5b57\u7b26\u96c6\u540d\u79f0\uff0c\u5219\u5fc5\u987b\u8981\u4e48\u6355\u83b7UnsupportedEncodingException\u5f02\u5e38\uff0c\u8981\u4e48\u629b\u51fa\u5b83\u3002\u66f4\u597d\u7684\u65b9\u6cd5\u662f\u4f7f\u7528Java 1.7\u4e2d\u5f15\u5165\u7684StandardCharsets\u7c7b\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code>byte[] byteArr = str.getBytes(StandardCharsets.UTF_8);\r\n<\/code><\/pre>\n<p>\u8fd9\u5c31\u662f\u5728Java\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u7684\u591a\u79cd\u65b9\u5f0f\u3002<\/p>\n<h2>\u5c06Java\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32<\/h2>\n<p>\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u7a0b\u5e8f\uff0c\u5c55\u793a\u5982\u4f55\u5728Java\u4e2d\u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.util;\r\n\r\npublic class ByteArrayToString {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tbyte[] byteArray = { 'P', 'A', 'N', 'K', 'A', 'J' };\r\n\t\tbyte[] byteArray1 = { 80, 65, 78, 75, 65, 74 };\r\n\r\n\t\tString str = new String(byteArray);\r\n\t\tString str1 = new String(byteArray1);\r\n\r\n\t\tSystem.out.println(str);\r\n\t\tSystem.out.println(str1);\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u56fe\u7247\u663e\u793a\u4e86\u4e0a\u8ff0\u7a0b\u5e8f\u751f\u6210\u7684\u8f93\u51fa\u3002\u4f60\u6709\u6ca1\u6709\u6ce8\u610f\u5230\u6211\u5728\u521b\u5efa\u5b57\u8282\u6570\u7ec4\u65f6\u63d0\u4f9b\u4e86\u5b57\u7b26\uff1f\u8fd9\u662f\u56e0\u4e3a\u81ea\u52a8\u88c5\u7bb1\uff0c\u5b57\u7b26&#8217;P&#8217;\u88ab\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u4e2d\u768480\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u8f93\u51fa\u76f8\u540c\u3002\u5b57\u7b26\u4e32\u8fd8\u6709\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u63d0\u4f9b\u5b57\u8282\u6570\u7ec4\u548c\u5b57\u7b26\u96c6\u4f5c\u4e3a\u53c2\u6570\u3002\u56e0\u6b64\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5728Java\u4e2d\u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/p>\n<pre class=\"post-pre\"><code>String str = new String(byteArray, StandardCharsets.UTF_8);\r\n<\/code><\/pre>\n<p>\u5b57\u7b26\u4e32\u7c7b\u4e5f\u6709\u4e00\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u5c06\u5b57\u8282\u6570\u7ec4\u7684\u5b50\u96c6\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/p>\n<pre class=\"post-pre\"><code>byte[] byteArray1 = { 80, 65, 78, 75, 65, 74 };\r\nString str = new String(byteArray1, 0, 3, StandardCharsets.UTF_8);\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u975e\u5e38\u5b8c\u7f8e\uff0c&#8217;str&#8217;\u7684\u503c\u5c06\u662f&#8217;PAN&#8217;\u3002\u8fd9\u5c31\u662fJava\u4e2d\u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u5168\u90e8\u5185\u5bb9\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4ece\u6211\u4eec\u7684 GitHub \u4ed3\u5e93\u4e2d\u67e5\u770b\u66f4\u591a\u6570\u7ec4\u793a\u4f8b\u3002<\/p>\n<p>\u53c2\u8003\uff1agetBytes API\u6587\u6863<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u4e2d\u7684\u5b57\u7b26\u4e32\u8f6c\u5b57\u8282\u6570\u7ec4\uff0c\u5b57\u8282\u6570\u7ec4\u8f6c\u5b57\u7b26\u4e32 \u4eca\u5929\u6211\u4eec\u5c06\u5b66\u4e60\u5982\u4f55\u5728Java\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u3002\u6211\u4eec\u8fd8\u5c06 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[180,181,2283,612,2284],"class_list":["post-878","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-java","tag-181","tag-2283","tag-612","tag-2284"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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