{"id":510,"date":"2017-02-12T12:08:25","date_gmt":"2017-02-12T04:08:25","guid":{"rendered":"http:\/\/www.rainweb.site\/?p=510"},"modified":"2023-08-07T20:57:29","modified_gmt":"2023-08-07T12:57:29","slug":"java-article53","status":"publish","type":"post","link":"http:\/\/rain1024.com\/index.php\/2017\/02\/12\/java-article53\/","title":{"rendered":"Java\u9ad8\u7ea7\u5e94\u7528\u4e4b&#8212;IO\u6d41\u4e2d\u5b57\u7b26\u6d41\u7684\u8f93\u5165\u8f93\u51fa"},"content":{"rendered":"<h2>\u5b57\u7b26\u6d41<\/h2>\n<p>###\u5b57\u7b26\u6d41\u6240\u5904\u7406\u7684\u6570\u636e\u57fa\u672c\u5355\u5143\u662f\u5b57\u7b26\uff0c\u5176\u8f93\u5165\u8f93\u51fa\u64cd\u4f5c\u90fd\u662f\u5728\u5b57\u7b26\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\uff0cJava\u8bed\u8a00\u4e2d\u7684\u5b57\u7b26\u91c7\u7528Unicode\u5b57\u7b26\u7f16\u7801\uff0c\u6bcf\u4e2a\u5b57\u7b26\u53602\u4e2a\u5b57\u8282\u7a7a\u95f4\uff0c\u800c\u6587\u672c\u6587\u4ef6\u6709\u53ef\u80fd\u91c7\u7528\u5176\u4ed6\u7c7b\u578b\u7684\u7f16\u7801\uff0c\u5982GBK\uff0cUTF8\u7f16\u7801\u65b9\u5f0f\uff0c\u56e0\u6b64\u6709\u65f6\u9700\u8981\u5b57\u7b26\u7f16\u7801\u4e4b\u95f4\u7684\u8f6c\u6362\u3002<\/p>\n<h3>\u5b57\u7b26\u6d41\u7684\u4e24\u4e2a\u57fa\u7c7bReader\uff0cWriter\uff0c\u5176\u4ed6\u5b57\u7b26\u6d41\u90fd\u662f\u7531\u8fd9\u4e24\u4e2a\u62bd\u8c61\u7c7b\u6d3e\u751f\u7684\u3002<\/h3>\n<h3>\u4e0b\u9762\u4f7f\u7528FileReader\u548cBufferedReader\u8bfb\u53d6\u6587\u4ef6\u7684\u5185\u5bb9\u5e76\u8f93\u51fa\u3002<\/h3>\n<h4>\u6ce8\uff1aBufferedReader\u7c7b\u4e2d\u7684readLine()\u65b9\u6cd5\u662f\u6309\u884c\u8bfb\u53d6\uff0c\u5f53\u8bfb\u53d6\u5230\u6d41\u7684\u672b\u5c3e\u65f6\u8fd4\u56denull\uff0c\u6240\u4ee5\u53ef\u4ee5\u6839\u636e\u8fd4\u56de\u503c\u662f\u5426\u4e3anull\u6765\u5224\u65ad\u6587\u4ef6\u662f\u5426\u8bfb\u53d6\u5b8c\u6bd5\u3002<\/h4>\n<pre><code>package com.qst.chapter01;\nimport java.io.BufferedReader;\nimport java.io.FileReader;\npublic class ReaderDemo {\n    public static void main(String[] args) {\n        \/\/ \u58f0\u660e\u4e00\u4e2aBufferedReader\u6d41\u7684\u5bf9\u8c61\n        BufferedReader br = null;\n        try {\n            \/\/ \u5b9e\u4f8b\u5316BufferedReader\u6d41\uff0c\u8fde\u63a5FileReader\u6d41\u7528\u4e8e\u8bfb\u6587\u4ef6\n            br = new BufferedReader(new FileReader(\n                    \"src\\\\com\\\\qst\\\\chapter01\\\\ReaderDemo.java\"));\n            String result = null;\n            \/\/\u5faa\u73af\u8bfb\u6587\u4ef6\uff0c\u4e00\u6b21\u8bfb\u4e00\u884c\n            while ((result = br.readLine()) != null) {\n                \/\/\u8f93\u51fa\n                System.out.println(result);\n            }\n        } catch (Exception e) {\n            e.printStackTrace();\n        } finally {\n            try {\n                \/\/ \u5173\u95ed\u7f13\u51b2\u6d41\n                br.close();\n            } catch (Exception ex) {\n                ex.printStackTrace();\n            }\n        }\n    }\n}\n\n<\/code><\/pre>\n<h3>\u4e0b\u9762\u4f7f\u7528FileWrite\u5c06\u7528\u6237\u8f93\u5165\u7684\u6570\u636e\u5199\u5165\u5230\u6307\u5b9a\u6587\u4ef6\u4e2d<\/h3>\n<pre><code>package com.qst.chapter01;\nimport java.io.FileWriter;\nimport java.io.IOException;\nimport java.util.Scanner;\npublic class WriterDemo {\n    public static void main(String[] args) {\n        \/\/ \u5efa\u7acb\u4e00\u4e2a\u4ece\u952e\u76d8\u63a5\u6536\u6570\u636e\u7684\u626b\u63cf\u5668\n        Scanner scanner = new Scanner(System.in);\n\n        \/\/ \u58f0\u660e\u6587\u4ef6\u5b57\u7b26\u8f93\u51fa\u6d41\n        FileWriter fw = null;\n        try {\n            \/\/ \u5b9e\u4f8b\u5316\u6587\u4ef6\u5b57\u7b26\u8f93\u51fa\u6d41\n            fw = new FileWriter(\"D:\\\\mytest2.txt\");\n            System.out.println(\"\u8bf7\u8f93\u5165\u5185\u5bb9\uff1a\");\n            String str = scanner.nextLine();\n            \/\/ \u5c06\u6570\u636e\u5199\u5165\u6587\u4ef6\u4e2d\n            fw.write(str);\n            System.out.println(\"\u5df2\u4fdd\u5b58\uff01\");\n        } catch (IOException e) {\n            e.printStackTrace();\n        } finally {\n            try {\n                \/\/ \u5173\u95ed\u6587\u4ef6\u5b57\u7b26\u8f93\u51fa\u6d41\n                fw.close();\n                scanner.close();\n            } catch (IOException e) {\n\n                e.printStackTrace();\n            }\n        }\n    }\n}\n\n<\/code><\/pre>\n<h2>\u6d41\u7684\u5206\u7c7b\uff1a<\/h2>\n<h3>\u6309\u7167\u6d41\u7684\u6d41\u5411\u6765\u5206\uff0c\u53ef\u4ee5\u5c06\u6d41\u5206\u4e3a\u8f93\u5165\u6d41\u548c\u8f93\u51fa\u6d41\u3002<\/h3>\n<ul>\n<li>\u8f93\u5165\u6d41\uff1a\u53ea\u80fd\u4ece\u8f93\u5165\u6d41\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u4f8b\u5982scanner<\/li>\n<li>\u8f93\u51fa\u6d41\uff1a\u53ea\u80fd\u5411\u8f93\u51fa\u6d41\u4e2d\u5199\u5165\u6570\u636e\uff0c\u4f8b\u5982System.out.println<\/li>\n<\/ul>\n<h3>\u6309\u7167\u6d41\u6240\u64cd\u4f5c\u7684\u57fa\u672c\u6570\u636e\u5355\u5143\u6765\u5206\uff0c\u53ef\u4ee5\u5206\u4e3a\u5b57\u8282\u6d41\u548c\u5b57\u7b26\u6d41<\/h3>\n<ul>\n<li>\u5b57\u8282\u6d41\uff1a\u6240\u64cd\u4f5c\u7684\u57fa\u672c\u6570\u636e\u5355\u5143\u662f8\u4f4d\u7684\u5b57\u8282\uff08byte\uff09\uff0c\u8f93\u5165\u548c\u8f93\u51fa\u90fd\u662f\u5bf9\u5b57\u8282\u8fdb\u884c\u64cd\u4f5c\n<ul>\n<li>\u8f93\u5165\u6d41\uff1aInputStream<\/li>\n<li>\u8f93\u51fa\u6d41\uff1aOutputStream<\/li>\n<\/ul>\n<\/li>\n<li>\u5b57\u7b26\u6d41\uff1a\u6240\u64cd\u4f5c\u7684\u57fa\u672c\u6570\u636e\u5355\u5143\u662f16\u4f4d\u7684\u5b57\u7b26\uff08Unicode\uff09\uff0c\u8f93\u5165\u8f93\u51fa\u90fd\u662f\u5bf9\u5b57\u7b26\u8fdb\u884c\u64cd\u4f5c\n<ul>\n<li>\u8f93\u5165\u6d41\uff1aReader<\/li>\n<li>\u8f93\u51fa\u6d41\uff1aWriter<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u6309\u7167\u6d41\u7684\u89d2\u8272\u6765\u5206\uff0c\u53ef\u4ee5\u5c06\u6d41\u5206\u4e3a\u8282\u70b9\u6d41\u548c\u5904\u7406\u6d41<\/h3>\n<ul>\n<li>\u8282\u70b9\u6d41\uff1a\u7528\u4e8e\u4ece\/\u5411\u7279\u5b9a\u7684IO\u8bbe\u5907\u4e2d\u8bfb\u5199\u6570\u636e\u7684\u6d41\uff0c\u8fd9\u79cd\u6d41\u88ab\u79f0\u4e3a\u8282\u70b9\u6d41\uff0c\u8282\u70b9\u6d41\u4e5f\u79f0\u4e3a\u4f4e\u7ea7\u6d41\uff0c\u8282\u70b9\u901a\u5e38\u662f\u6307\u6587\u4ef6\uff0c\u5185\u5b58\u7b49\u5176\u4ed6\u7ba1\u9053<\/li>\n<li>\u5904\u7406\u6d41\uff1a\u5bf9\u4e00\u4e2a\u5df2\u7ecf\u5b58\u5728\u7684\u6d41\u8fdb\u884c\u8fde\u63a5\u6216\u5c01\u88c5\uff0c\u901a\u8fc7\u5c01\u88c5\u540e\u7684\u6d41\u6765\u5b9e\u73b0\u6570\u636e\u7684\u8bfb\u5199\u529f\u80fd\uff0c\u8fd9\u79cd\u6d41\u88ab\u79f0\u4e3a\u5904\u7406\u6d41\uff0c\u5904\u7406\u6d41\u4e5f\u88ab\u79f0\u4e3a\u9ad8\u7ea7\u6d41\uff0c\u5305\u88c5\u6d41<\/li>\n<\/ul>\n<h2>\u6ce8\u610f\uff1a<\/h2>\n<ul>\n<li>\u5982\u679c\u8fdb\u884c\u8f93\u5165\u8f93\u51fa\u7684\u5185\u5bb9\u662f\u6587\u672c\u5185\u5bb9\uff0c\u5219\u4f7f\u7528\u5b57\u7b26\u6d41<\/li>\n<li>\u5982\u679c\u8fdb\u884c\u8f93\u5165\u8f93\u51fa\u7684\u5185\u5bb9\u662f\u4e8c\u8fdb\u5236\u5185\u5bb9\uff0c\u5219\u4f7f\u7528\u5b57\u8282\u6d41<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5b57\u7b26\u6d41 ###\u5b57\u7b26\u6d41\u6240\u5904\u7406\u7684\u6570\u636e\u57fa\u672c\u5355\u5143\u662f\u5b57\u7b26\uff0c\u5176\u8f93\u5165\u8f93\u51fa\u64cd\u4f5c\u90fd\u662f\u5728\u5b57\u7b26\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\uff0cJava\u8bed\u8a00\u4e2d\u7684\u5b57\u7b26\u91c7\u7528\u2026 <span class=\"read-more\"><a href=\"http:\/\/rain1024.com\/index.php\/2017\/02\/12\/java-article53\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":507,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"footnotes":""},"categories":[31],"tags":[46,76],"class_list":["post-510","post","type-post","status-publish","format-aside","has-post-thumbnail","hentry","category-java","tag-java","tag-io","post_format-post-format-aside"],"_links":{"self":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/comments?post=510"}],"version-history":[{"count":1,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/510\/revisions"}],"predecessor-version":[{"id":1488,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/510\/revisions\/1488"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/media\/507"}],"wp:attachment":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/media?parent=510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/categories?post=510"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/tags?post=510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}