{"id":240,"date":"2015-04-17T19:35:58","date_gmt":"2015-04-17T11:35:58","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=240"},"modified":"2026-08-18T12:09:29","modified_gmt":"2026-08-18T04:09:29","slug":"%e9%9d%a2%e5%90%91%e5%ad%97%e7%ac%a6%e7%9a%84%e8%be%93%e5%85%a5%e6%b5%81","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=240","title":{"rendered":"\u9762\u5411\u5b57\u7b26\u7684\u8f93\u5165\u6d41"},"content":{"rendered":"
\n

\u5b57\u7b26\u6d41\u662f\u6309\u5b57\u7b26<\/strong>\u800c\u4e0d\u662f\u6309\u5b57\u8282\u6765\u8bfb\u5199\u7684\uff1a\u6e90\u6216\u76ee\u6807\u901a\u5e38\u662f\u6587\u672c\u6587\u4ef6\u3002java.io \u91cc\u6240\u6709\u5b57\u7b26\u6d41\u7684\u7236\u7c7b\u662f Reader<\/code> \u548c Writer<\/code>\uff0c\u4e8c\u8005\u90fd\u662f\u62bd\u8c61\u7c7b\uff0c\u5b9e\u9645\u5de5\u4f5c\u8981\u9760\u5b50\u7c7b\u3002<\/p>\n

\u5b50\u7c7b\u53ef\u4ee5\u5206\u6210\u4e24\u7c7b\uff1a\u76f4\u63a5\u5bf9\u63a5\u6570\u636e\u6e90\u6216\u76ee\u7684\u5730\u7684\u53eb\u8282\u70b9\u6d41<\/strong>\uff0c\u5728\u6d41\u4e0a\u518d\u505a\u7f13\u51b2\u3001\u8f6c\u6362\u7b49\u5904\u7406\u7684\u53eb\u5904\u7406\u6d41<\/strong>\u3002\u672c\u8282\u5148\u770b\u9762\u5411\u5b57\u7b26\u7684\u8f93\u5165\u6d41<\/strong>\u3002<\/p>\n

<\/p>\n

\"\"<\/a><\/p>\n

\u4e00\u3001Reader \u7684\u7c7b\u5c42\u6b21<\/h2>\n

\u9762\u5411\u5b57\u7b26\u7684\u8f93\u5165\u6d41\u90fd\u662f Reader<\/code> \u7684\u5b50\u7c7b\uff0c\u5c42\u6b21\u7ed3\u6784\u5982\u4e0b\uff08\u539f\u6587\u56fe 10-2\uff09\uff1a<\/p>\n

\"\u2550\u255d\u2567\u0451\"<\/a><\/p>\n

\u4e3b\u8981\u5b50\u7c7b\u53ca\u8bf4\u660e\u89c1\u4e0b\u9762\u4e24\u5f20\u539f\u56fe\u8868\uff08\u539f\u6587\u8868 10-1\uff09\uff1a<\/p>\n

\"\u2550\u255d\u2567\u0451<\/a><\/p>\n

\"\u2550\u255d\u2567\u0451<\/a><\/p>\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/th>\n\u4ee3\u8868\u7c7b<\/th>\n\u5178\u578b\u7528\u9014<\/th>\n<\/tr>\n<\/thead>\n
\u8282\u70b9\u6d41<\/td>\nFileReader<\/code><\/td>\n\u6309\u5b57\u7b26\u8bfb\u6587\u672c\u6587\u4ef6<\/td>\n<\/tr>\n
\u5904\u7406\u6d41<\/td>\nBufferedReader<\/code><\/td>\n\u5e26\u7f13\u51b2\uff0c\u53ef\u6309\u884c readLine()<\/code><\/td>\n<\/tr>\n
\u6865\u63a5<\/td>\nInputStreamReader<\/code><\/td>\n\u628a\u5b57\u8282\u6d41\u89e3\u7801\u6210\u5b57\u7b26\u6d41<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e8c\u3001\u7528 FileReader \u8bfb\u6587\u672c<\/h2>\n

FileReader<\/code> \u662f InputStreamReader<\/code> \u7684\u5b50\u7c7b\uff0c\u56e0\u6b64\u65e2\u80fd\u7528 Reader<\/code> \u7684\u65b9\u6cd5\uff0c\u4e5f\u80fd\u7528 InputStreamReader<\/code> \u7684\u65b9\u6cd5\u3002\u8bfb\u6587\u4ef6\u524d\u8981\u5148\u6784\u9020\u5bf9\u8c61\uff0c\u518d\u8c03\u7528 read()<\/code>\u3002\u6784\u9020\u65b9\u6cd5\uff1a<\/p>\n

public FileReader(String name); \/\/ \u6839\u636e\u6587\u4ef6\u540d\u521b\u5efa\u53ef\u8bfb\u7684\u8f93\u5165\u6d41\u5bf9\u8c61<\/code><\/pre>\n
\u3010\u4f8b 10-1\u3011\u7528 FileReader<\/code> \u8bfb\u53d6\u7eaf\u6587\u672c\u6587\u4ef6\uff1a<\/p>\n
import java.io.*;\nclass ep10_1 {\n    public static void main(String args[]) throws IOException {\n        char a[] = new char[1000]; \/\/ \u53ef\u5bb9\u7eb3 1000 \u4e2a\u5b57\u7b26\n        FileReader b = new FileReader(\"ep10_1.txt\");\n        int num = b.read(a); \/\/ \u8bfb\u5165\u6570\u7ec4 a\uff0c\u8fd4\u56de\u5b57\u7b26\u6570\n        String str = new String(a, 0, num);\n        System.out.println(\"\u8bfb\u53d6\u7684\u5b57\u7b26\u4e2a\u6570\u4e3a\uff1a\" + num + \",\u5185\u5bb9\u4e3a\uff1a\\n\");\n        System.out.println(str);\n    }\n}<\/code><\/pre>\n
\u6ce8\u610f\uff1aJava \u628a\u4e00\u4e2a\u6c49\u5b57\u6216\u4e00\u4e2a\u82f1\u6587\u5b57\u6bcd\u90fd\u5f53\u4f5c\u4e00\u4e2a\u5b57\u7b26<\/strong>\uff1b\u56de\u8f66\u3001\u6362\u884c\u4f1a\u6309\u4e24\u4e2a\u5b57\u7b26\u8ba1\u7b97\u3002<\/p>\n
\u4e09\u3001\u7528 BufferedReader \u6309\u884c\u8bfb<\/h2>\n
BufferedReader<\/code> \u8bfb\u7684\u662f\u7f13\u51b2\u533a\u91cc\u7684\u6570\u636e\u3002\u7528\u6cd5\u662f\uff1a\u5148\u5efa FileReader<\/code>\uff0c\u518d\u628a\u5b83\u4f20\u7ed9 BufferedReader<\/code> \u7684\u6784\u9020\u65b9\u6cd5\uff1a<\/p>\n
public BufferedReader(Reader in); \/\/ \u521b\u5efa\u7f13\u51b2\u5b57\u7b26\u8f93\u5165\u6d41\npublic BufferedReader(Reader in, int size); \/\/ \u540c\u65f6\u6307\u5b9a\u7f13\u51b2\u533a\u5927\u5c0f<\/code><\/pre>\n
\u3010\u4f8b 10-2\u3011\u7528 BufferedReader<\/code> \u6309\u884c\u8bfb\u53d6\u7eaf\u6587\u672c\uff1a<\/p>\n
import java.io.*;\nclass ep10_2 {\n    public static void main(String args[]) throws IOException {\n        String OneLine;\n        int count = 0;\n        try {\n            FileReader a = new FileReader(\"ep10_1.txt\");\n            BufferedReader b = new BufferedReader(a);\n            while ((OneLine = b.readLine()) != null) { \/\/ \u6bcf\u6b21\u8bfb 1 \u884c\n                count++;\n                System.out.println(OneLine);\n            }\n            System.out.println(\"\\n \u5171\u8bfb\u53d6\u4e86\" + count + \"\u884c\");\n            b.close();\n        } catch (IOException io) {\n            System.out.println(\"\u51fa\u9519\u4e86!\" + io);\n        }\n    }\n}<\/code><\/pre>\n
\u6267\u884c read()<\/code> \/ write()<\/code> \u65f6\u53ef\u80fd\u629b\u51fa IOException<\/code>\uff0c\u8bfb\u5199\u8bed\u53e5\u5e94\u653e\u8fdb try<\/code>\uff0c\u7528\u5bf9\u5e94\u7684 catch<\/code> \u5904\u7406\u3002<\/p>\n
\n
\u4e00\u53e5\u8bdd\u603b\u7ed3\uff1a\u8bfb\u6587\u672c\u4f18\u5148 FileReader\uff1b\u8981\u6309\u884c\u3001\u8981\u7f13\u51b2\uff0c\u518d\u5305\u4e00\u5c42 BufferedReader\uff0c\u5e76\u8bb0\u5f97\u5728 try-catch \u91cc\u5173\u95ed\u6d41\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
\u5b57\u7b26\u6d41\u662f\u6309\u5b57\u7b26\u800c\u4e0d\u662f\u6309\u5b57\u8282\u6765\u8bfb\u5199\u7684\uff1a\u6e90\u6216\u76ee\u6807\u901a\u5e38\u662f\u6587\u672c\u6587\u4ef6\u3002java.io \u91cc\u6240\u6709\u5b57\u7b26\u6d41\u7684\u7236\u7c7b\u662f Reader […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[22],"tags":[41],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/240"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=240"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/240\/revisions"}],"predecessor-version":[{"id":3534,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/240\/revisions\/3534"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}