{"id":263,"date":"2023-04-29T16:31:04","date_gmt":"2022-10-16T21:34:16","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/java-filewriter-%e7%a4%ba%e4%be%8b\/"},"modified":"2025-08-01T03:05:29","modified_gmt":"2025-07-31T19:05:29","slug":"java-filewriter-%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-filewriter-%e7%a4%ba%e4%be%8b\/","title":{"rendered":"Java FileWriter \u6559\u7a0b\uff1a\u6587\u4ef6\u5199\u5165\u4e0e\u64cd\u4f5c\u8be6\u89e3"},"content":{"rendered":"<h2>Java\u7684FileWriter<\/h2>\n<ul class=\"post-ul\">\n<li>Java FileWriter \u7c7b\u662f `java.io` \u5305\u7684\u4e00\u90e8\u5206\u3002<\/li>\n<li>FileWriter \u662f `java.io.OutputStreamWriter` \u7c7b\u7684\u5b50\u7c7b\u3002<\/li>\n<li>FileWriter \u7528\u4e8e\u5199\u5165\u5b57\u7b26\u6d41\u3002<\/li>\n<li>FileWriter \u7528\u4e8e\u5411\u5b57\u7b26\u6587\u4ef6\u5199\u5165\u6570\u636e\u3002\u5176 `write()` \u65b9\u6cd5\u5141\u8bb8\u60a8\u5c06\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u6216\u5b57\u7b26\u4e32\u5199\u5165\u6587\u4ef6\u3002<\/li>\n<li>FileWriter \u901a\u5e38\u4f1a\u88ab\u66f4\u9ad8\u7ea7\u522b\u7684 Writer \u5bf9\u8c61\uff08\u5982 BufferedWriter \u6216 PrintWriter\uff09\u5305\u88c5\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u6027\u80fd\u548c\u66f4\u9ad8\u7ea7\u3001\u66f4\u7075\u6d3b\u7684\u6570\u636e\u5199\u5165\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647be8a4b2f92e6c72c830\/2-0.png\" class='post-images' alt=\"Java FileWriter\" title=\"\">\n<\/div>\n<h2>FileWriter \u6784\u9020\u51fd\u6570<\/h2>\n<ol>\n<li>`FileWriter(File file)`: \u4f7f\u7528\u6307\u5b9a\u7684 `File` \u5bf9\u8c61\u521b\u5efa\u4e00\u4e2a `FileWriter` \u5bf9\u8c61\u3002\u5982\u679c\u6587\u4ef6\u5b58\u5728\u4f46\u5b83\u662f\u4e00\u4e2a\u76ee\u5f55\u800c\u4e0d\u662f\u4e00\u4e2a\u666e\u901a\u6587\u4ef6\uff0c\u6216\u8005\u6587\u4ef6\u4e0d\u5b58\u5728\u4f46\u65e0\u6cd5\u521b\u5efa\uff0c\u6216\u8005\u65e0\u6cd5\u4ee5\u4efb\u4f55\u5176\u4ed6\u539f\u56e0\u6253\u5f00\u6587\u4ef6\uff0c\u5219\u629b\u51fa\u4e00\u4e2a `IOException`\u3002<\/li>\n<li>`FileWriter(File file, boolean append)`: \u4f7f\u7528\u6307\u5b9a\u7684 `File` \u5bf9\u8c61\u521b\u5efa\u4e00\u4e2a `FileWriter` \u5bf9\u8c61\u3002\u5982\u679c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a `true`\uff0c\u5219\u4f1a\u5c06\u5b57\u8282\u5199\u5165\u6587\u4ef6\u7684\u672b\u5c3e\u800c\u4e0d\u662f\u5f00\u5934\u3002\u5982\u679c\u6587\u4ef6\u5b58\u5728\u4f46\u5b83\u662f\u4e00\u4e2a\u76ee\u5f55\u800c\u4e0d\u662f\u4e00\u4e2a\u666e\u901a\u6587\u4ef6\uff0c\u6216\u8005\u6587\u4ef6\u4e0d\u5b58\u5728\u4f46\u65e0\u6cd5\u521b\u5efa\uff0c\u6216\u8005\u65e0\u6cd5\u4ee5\u4efb\u4f55\u5176\u4ed6\u539f\u56e0\u6253\u5f00\u6587\u4ef6\uff0c\u5219\u629b\u51fa\u4e00\u4e2a `IOException`\u3002<\/li>\n<li>`FileWriter(FileDescriptor fd)`: \u521b\u5efa\u4e00\u4e2a\u4e0e\u6307\u5b9a\u6587\u4ef6\u63cf\u8ff0\u7b26\u5173\u8054\u7684 `FileWriter` \u5bf9\u8c61\u3002<\/li>\n<li>`FileWriter(String fileName)`: \u4f7f\u7528\u6307\u5b9a\u7684\u6587\u4ef6\u540d\u521b\u5efa\u4e00\u4e2a `FileWriter` \u5bf9\u8c61\u3002\u5982\u679c\u6587\u4ef6\u5b58\u5728\u4f46\u5b83\u662f\u4e00\u4e2a\u76ee\u5f55\u800c\u4e0d\u662f\u4e00\u4e2a\u666e\u901a\u6587\u4ef6\uff0c\u6216\u8005\u6587\u4ef6\u4e0d\u5b58\u5728\u4f46\u65e0\u6cd5\u521b\u5efa\uff0c\u6216\u8005\u65e0\u6cd5\u4ee5\u4efb\u4f55\u5176\u4ed6\u539f\u56e0\u6253\u5f00\u6587\u4ef6\uff0c\u5219\u629b\u51fa\u4e00\u4e2a `IOException`\u3002<\/li>\n<li>`FileWriter(String fileName, boolean append)`: \u4f7f\u7528\u6307\u5b9a\u7684\u6587\u4ef6\u540d\u521b\u5efa\u4e00\u4e2a `FileWriter` \u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528\u4e00\u4e2a\u5e03\u5c14\u503c\u6307\u793a\u662f\u5426\u8ffd\u52a0\u5199\u5165\u7684\u6570\u636e\u3002\u5982\u679c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a `true`\uff0c\u5219\u6570\u636e\u5c06\u88ab\u5199\u5165\u6587\u4ef6\u7684\u672b\u5c3e\u800c\u4e0d\u662f\u5f00\u5934\u3002\u5982\u679c\u6587\u4ef6\u5b58\u5728\u4f46\u5b83\u662f\u4e00\u4e2a\u76ee\u5f55\u800c\u4e0d\u662f\u4e00\u4e2a\u666e\u901a\u6587\u4ef6\uff0c\u6216\u8005\u6587\u4ef6\u4e0d\u5b58\u5728\u4f46\u65e0\u6cd5\u521b\u5efa\uff0c\u6216\u8005\u65e0\u6cd5\u4ee5\u4efb\u4f55\u5176\u4ed6\u539f\u56e0\u6253\u5f00\u6587\u4ef6\uff0c\u5219\u629b\u51fa\u4e00\u4e2a `IOException`\u3002<\/li>\n<\/ol>\n<h2>Java FileWriter \u793a\u4f8b<\/h2>\n<p>Java FileWriter \u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528 FileWriter \u7c7b\u8fdb\u884c\u6587\u4ef6\u5199\u5165\u3002<\/p>\n<p>FileWriter \u7ee7\u627f\u4e86 `java.io.OutputStreamWriter` \u548c `java.io.Writer` \u7c7b\u7684\u65b9\u6cd5\u3002\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u4e0b\u9762\u7684\u4e00\u4e9b\u65b9\u6cd5\u548c\u793a\u4f8b\u3002<\/p>\n<h3>\u5199\u5165 `int c`<\/h3>\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u5199\u5165\u4e00\u4e2a\u7531\u6574\u6570 `c` \u6307\u5b9a\u7684\u5355\u4e2a\u5b57\u7b26\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\nimport java.io.IOException;\r\n\r\n\/**\r\n * Java \u4f7f\u7528 FileWriter \u7684 write \u65b9\u6cd5\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterWriteIntExample {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tFileWriter fileWriter = null;\r\n\t\ttry {\r\n\t\t\tfileWriter = new FileWriter(\"D:\/data\/file.txt\");\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.OutputStreamWriter \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(65);\r\n\t\t\tfileWriter.write(66);\r\n\t\t\tfileWriter.write(67);\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}finally {\r\n\t\t\ttry {\r\n\t\t\t\tif (fileWriter != null) {\r\n\t\t\t\t\tfileWriter.flush();\r\n\t\t\t\t\tfileWriter.close();\r\n\t\t\t\t}\r\n\t\t\t} catch (IOException e) {\r\n\t\t\t\te.printStackTrace();\r\n\t\t\t}\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647be8a4b2f92e6c72c830\/10-0.png\" class='post-images' alt=\"Java FileWriter \u793a\u4f8b\" title=\"\">\n<\/div>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\n\r\n\/**\r\n * Java \u4f7f\u7528 try-with-resources \u8bed\u53e5\u901a\u8fc7 FileWriter \u7684 write \u65b9\u6cd5\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterWriteIntTryWithResource {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\ttry(FileWriter fileWriter = new FileWriter(\"D:\/data\/file.txt\")) {\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.OutputStreamWriter \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(65);\r\n\t\t\tfileWriter.write(66);\r\n\t\t\tfileWriter.write(67);\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>\u6ce8\u610f\uff1a\u4e0a\u8ff0\u7a0b\u5e8f\u4e2d\uff0c`fileWriter.write(65)` \u4f1a\u5c06\u5b57\u7b26 &#8216;A&#8217; \u5199\u5165\u6587\u4ef6\uff0c\u56e0\u4e3a 65 \u662f\u5b57\u7b26 &#8216;A&#8217; \u7684\u5341\u8fdb\u5236 ASCII \u503c\uff0c\u6240\u4ee5\u6574\u6570 65 \u4f1a\u88ab\u8f6c\u6362\u6210\u5b57\u7b26 &#8216;A&#8217;\uff0c\u5176\u4ed6\u5b57\u7b26\u540c\u7406\u3002<\/p>\n<h3>\u5199\u5165 `String str, int off, int len`<\/h3>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u4ece\u5b57\u7b26\u4e32 `str` \u7684 `off` \u504f\u79fb\u91cf\u5f00\u59cb\uff0c\u5c06\u957f\u5ea6\u4e3a `len` \u7684\u4e00\u90e8\u5206\u5b57\u7b26\u5199\u5165\u6587\u4ef6\u3002<\/p>\n<ul class=\"post-ul\">\n<li>`str`: \u8981\u5199\u5165\u7684\u5b57\u7b26\u4e32<\/li>\n<li>`off`: \u5f00\u59cb\u8bfb\u53d6\u5b57\u7b26\u7684\u504f\u79fb\u91cf<\/li>\n<li>`len`: \u8981\u5199\u5165\u7684\u5b57\u7b26\u6570\u91cf<\/li>\n<\/ul>\n<p>\u5982\u679c `len` \u53c2\u6570\u7684\u503c\u4e3a\u8d1f\u6570\uff0c\u5219\u4e0d\u4f1a\u5199\u5165\u4efb\u4f55\u5b57\u7b26\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\n\r\n\/**\r\n * Java \u4f7f\u7528 FileWriter \u7684 write(String s, int off, int len) \u65b9\u6cd5\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterWriteStringExample {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tString data = \"This is FileWriter Example.\";\r\n\t\ttry(FileWriter fileWriter = new FileWriter(\"D:\/data\/file.txt\")) {\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.OutputStreamWriter \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(data, 8, 10);\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65647be8a4b2f92e6c72c830\/18-0.png\" class='post-images' alt=\"FileWriter \u5199\u5165\u793a\u4f8b\" title=\"\">\n<\/div>\n<h3>\u5c06\u5b57\u7b26\u6570\u7ec4 `cbuf` \u4ece `off` \u4f4d\u7f6e\u5f00\u59cb\u7684\u957f\u5ea6\u4e3a `len` \u7684\u90e8\u5206\u5199\u5165\u3002<\/h3>\n<p>\u8be5\u65b9\u6cd5\u5c06\u5b57\u7b26\u6570\u7ec4 `char[] cbuf` \u4e2d\u4ece `off` \u4f4d\u7f6e\u5f00\u59cb\uff0c\u957f\u5ea6\u4e3a `len` \u7684\u4e00\u90e8\u5206\u5199\u5165\u3002<\/p>\n<ul class=\"post-ul\">\n<li><code>cbuf<\/code>: \u4e00\u4e2a\u5b57\u7b26\u6570\u7ec4<\/li>\n<li><code>off<\/code>: \u5f00\u59cb\u8bfb\u53d6\u5b57\u7b26\u7684\u504f\u79fb\u91cf<\/li>\n<li><code>len<\/code>: \u8981\u5199\u5165\u7684\u5b57\u7b26\u6570\u91cf<\/li>\n<\/ul>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\n\r\n\/**\r\n * \u4f7f\u7528 FileWriter \u7684 write(char[] cbuf, int off, int len) \u65b9\u6cd5\u5728 Java \u4e2d\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterWriteCharArray {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tchar[] data = \"This is FileWriter Example.\".toCharArray();\r\n\t\ttry(FileWriter fileWriter = new FileWriter(\"D:\/data\/file.txt\")) {\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.OutputStreamWriter \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(data, 8, 10);\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<h3>\u5199\u5165\u5b57\u7b26\u6570\u7ec4 <code>cbuf<\/code><\/h3>\n<p>\u6b64\u65b9\u6cd5\u5c06\u7531 <code>cbuf<\/code> \u6307\u5b9a\u7684\u5b57\u7b26\u6570\u7ec4\u5199\u5165\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\n\r\n\/**\r\n * \u4f7f\u7528 FileWriter \u7684 write(char[] cbuf) \u65b9\u6cd5\u5728 Java \u4e2d\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterWriteCharArrayExample {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tchar[] data = \"This is FileWriter Example.\".toCharArray();\r\n\t\ttry(FileWriter fileWriter = new FileWriter(\"D:\/data\/file.txt\")) {\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.Writer \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(data);\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<h3>\u5199\u5165\u5b57\u7b26\u4e32 <code>str<\/code><\/h3>\n<p>\u6b64\u65b9\u6cd5\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u503c\u5199\u5165\u7531 <code>str<\/code> \u6307\u5b9a\u7684\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\n\r\n\/**\r\n * \u4f7f\u7528 FileWriter \u7684 write(String str) \u65b9\u6cd5\u5728 Java \u4e2d\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterWriteString {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\ttry(FileWriter fileWriter = new FileWriter(\"D:\/data\/file.txt\")) {\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.Writer \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(\"JournalDev\");\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<h3>\u8ffd\u52a0\u5b57\u7b26 <code>c<\/code><\/h3>\n<p>\u5c06\u6307\u5b9a\u5b57\u7b26\u8ffd\u52a0\u5230\u6b64\u5199\u5165\u5668\u4e2d\uff0c\u5176\u4e2d <code>c<\/code> \u662f\u8981\u8ffd\u52a0\u7684 16 \u4f4d\u5b57\u7b26\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\n\r\n\/**\r\n * \u4f7f\u7528 FileWriter \u7684 append(char c) \u65b9\u6cd5\u5728 Java \u4e2d\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterAppendCharacter {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\ttry(FileWriter fileWriter = new FileWriter(\"D:\/data\/file.txt\")) {\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.Writer \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(\"JournalDev\");\r\n\t\t\tfileWriter.append('C');\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<h3>\u6267\u884c <code>flush()<\/code><\/h3>\n<p>\u6b64\u65b9\u6cd5\u6e05\u7a7a\u6d41\u3002\u5f53\u8c03\u7528 <code>flush()<\/code> \u65b9\u6cd5\u65f6\uff0c\u5b83\u7acb\u5373\u5c06\u6570\u636e\u5199\u5165\u8f93\u51fa\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\n\r\n\/**\r\n * \u4f7f\u7528 FileWriter \u7684 flush() \u65b9\u6cd5\u5728 Java \u4e2d\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterFlushExample {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\ttry(FileWriter fileWriter = new FileWriter(\"D:\/data\/file.txt\")) {\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.Writer \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(\"JournalDev\");\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.OutputStreamWriter \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.flush();\r\n\r\n\t\t\tfileWriter.write(\" Tutorials\");\r\n\t\t\tfileWriter.flush();\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<h3><code>close()<\/code> \u65b9\u6cd5<\/h3>\n<p>\u5728\u5173\u95ed\u6d41\u4e4b\u524d\uff0c\u6b64\u65b9\u6cd5\u4f1a\u5237\u65b0\u6d41\u3002\u4e00\u65e6\u6d41\u88ab\u5173\u95ed\uff0c\u8c03\u7528 <code>write()<\/code> \u6216 <code>flush()<\/code> \u65b9\u6cd5\u5c06\u5bfc\u81f4\u629b\u51fa <code>IOException<\/code>\u3002\u5173\u95ed\u5df2\u5173\u95ed\u7684\u6d41\u4e0d\u4f1a\u4ea7\u751f\u4efb\u4f55\u6548\u679c\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.io.filewriter;\r\n\r\nimport java.io.FileWriter;\r\n\r\n\/**\r\n * \u4f7f\u7528 FileWriter \u7684 close() \u65b9\u6cd5\u5728 Java \u4e2d\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class FileWriterCloseExample {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\ttry(FileWriter fileWriter = new FileWriter(\"D:\/data\/file.txt\")) {\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.Writer \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.write(\"JournalDev\");\r\n\t\t\t\/\/ \u7ee7\u627f\u81ea java.io.OutputStreamWriter \u7684\u65b9\u6cd5\r\n\t\t\tfileWriter.close();\r\n\r\n\t\t\tfileWriter.write(\" Tutorials\");\r\n\t\t} catch (Exception e) {\r\n\t\t\te.printStackTrace();\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>java.io.IOException: Stream closed\r\n\tat sun.nio.cs.StreamEncoder.ensureOpen(Unknown Source)\r\n\tat sun.nio.cs.StreamEncoder.write(Unknown Source)\r\n\tat sun.nio.cs.StreamEncoder.write(Unknown Source)\r\n\tat java.io.OutputStreamWriter.write(Unknown Source)\r\n\tat java.io.Writer.write(Unknown Source)\r\n\tat com.Olivia.examples.FileWriterCloseExample.main(FileWriterCloseExample.java:20)\r\n<\/code><\/pre>\n<h2><code>FileWriter<\/code> \u548c <code>FileOutputStream<\/code> \u7684\u6bd4\u8f83<\/h2>\n<ul class=\"post-ul\">\n<li><code>FileWriter<\/code> \u7528\u4e8e\u5199\u5165\u5b57\u7b26\u6d41\uff0c\u800c <code>FileOutputStream<\/code> \u7528\u4e8e\u5199\u5165\u539f\u59cb\u5b57\u8282\u6d41\u3002<\/li>\n<li><code>FileWriter<\/code> \u5904\u7406 16 \u4f4d\u5b57\u7b26\uff0c\u800c <code>FileOutputStream<\/code> \u5904\u7406 8 \u4f4d\u5b57\u8282\u3002<\/li>\n<li><code>FileWriter<\/code> \u53ef\u4ee5\u5904\u7406 Unicode \u5b57\u7b26\u4e32\uff0c\u800c <code>FileOutputStream<\/code> \u5c06\u5b57\u8282\u5199\u5165\u6587\u4ef6\uff0c\u4e0d\u63a5\u53d7\u5b57\u7b26\u6216\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u9700\u8981\u901a\u8fc7 <code>OutputStreamWriter<\/code> \u8fdb\u884c\u5305\u88c5\u624d\u80fd\u63a5\u53d7\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n<p>\u60a8\u8fd8\u53ef\u4ee5\u67e5\u9605 Java \u5199\u5165\u6587\u4ef6 \u7684\u76f8\u5173\u5185\u5bb9\uff0c\u4e86\u89e3\u5982\u4f55\u5728 Java \u4e2d\u5199\u5165\u6587\u4ef6\u3002\u4ee5\u4e0a\u5c31\u662f\u5173\u4e8e Java <code>FileWriter<\/code> \u7684\u5168\u90e8\u5185\u5bb9\uff0c\u5e0c\u671b\u6ca1\u6709\u9057\u6f0f\u4efb\u4f55\u91cd\u8981\u4fe1\u606f\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4ece\u6211\u4eec\u7684 GitHub \u4ed3\u5e93\u4e0b\u8f7d\u6240\u6709\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n<p>\u53c2\u8003: <a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/io\/FileWriter.html\" target=\"_blank\" rel=\"noopener\">API \u6587\u6863<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u7684FileWriter Java FileWriter \u7c7b\u662f `java.io` \u5305\u7684\u4e00\u90e8\u5206\u3002 Fil [&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":[959,961,189,960,307],"class_list":["post-263","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-filewriter","tag-io","tag-java","tag-960","tag-307"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java FileWriter \u6559\u7a0b\uff1a\u6587\u4ef6\u5199\u5165\u4e0e\u64cd\u4f5c\u8be6\u89e3 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u6df1\u5165\u5b66\u4e60Java 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