{"id":1319,"date":"2022-10-30T22:43:54","date_gmt":"2022-10-30T14:43:54","guid":{"rendered":"https:\/\/qaqaq.top\/?p=1319"},"modified":"2022-11-27T12:39:46","modified_gmt":"2022-11-27T04:39:46","slug":"io%e6%b5%81-%e7%bc%93%e5%86%b2%e6%b5%81%e8%af%be%e5%90%8e%e7%bb%83%e4%b9%a02","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=1319","title":{"rendered":"IO\u6d41-\u7f13\u51b2\u6d41\u8bfe\u540e\u7ec3\u4e602"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P599;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nimport java.io.BufferedWriter;\r\nimport java.io.FileReader;\r\nimport java.io.FileWriter;\r\nimport java.io.IOException;\r\nimport java.util.HashMap;\r\nimport java.util.Map;\r\nimport java.util.Set;\r\n\r\n\r\n\/**\r\n * \u7ec3\u4e603:\u83b7\u53d6\u6587\u672c\u4e0a\u5b57\u7b26\u51fa\u73b0\u7684\u6b21\u6570,\u628a\u6570\u636e\u5199\u5165\u6587\u4ef6\r\n *\r\n * \u601d\u8def\uff1a\r\n * 1.\u904d\u5386\u6587\u672c\u6bcf\u4e00\u4e2a\u5b57\u7b26\r\n * 2.\u5b57\u7b26\u51fa\u73b0\u7684\u6b21\u6570\u5b58\u5728Map\u4e2d\r\n *\r\n * Map&lt;Character,Integer> map = new HashMap&lt;Character,Integer>();\r\n * map.put('a',18);\r\n * map.put('\u4f60',2);\r\n *\r\n * 3.\u628amap\u4e2d\u7684\u6570\u636e\u5199\u5165\u6587\u4ef6\r\n *\r\n * @author shkstart\r\n * @create 2019 \u4e0b\u5348 3:47\r\n *\/\r\npublic class WordCount {\r\n    \/*\r\n    \u8bf4\u660e\uff1a\u5982\u679c\u4f7f\u7528\u5355\u5143\u6d4b\u8bd5\uff0c\u6587\u4ef6\u76f8\u5bf9\u8def\u5f84\u4e3a\u5f53\u524dmodule\r\n          \u5982\u679c\u4f7f\u7528main()\u6d4b\u8bd5\uff0c\u6587\u4ef6\u76f8\u5bf9\u8def\u5f84\u4e3a\u5f53\u524d\u5de5\u7a0b\r\n     *\/\r\n    @Test\r\n    public void testWordCount() {\r\n        FileReader fr = null;\r\n        BufferedWriter bw = null;\r\n        try {\r\n            \/\/1.\u521b\u5efaMap\u96c6\u5408\r\n            Map&lt;Character, Integer> map = new HashMap&lt;Character, Integer>();\r\n\r\n            \/\/2.\u904d\u5386\u6bcf\u4e00\u4e2a\u5b57\u7b26,\u6bcf\u4e00\u4e2a\u5b57\u7b26\u51fa\u73b0\u7684\u6b21\u6570\u653e\u5230map\u4e2d\r\n            fr = new FileReader(\"dbcp.txt\");\r\n            int c = 0;\r\n            while ((c = fr.read()) != -1) {\r\n                \/\/int \u8fd8\u539f char\r\n                char ch = (char) c;\r\n                \/\/ \u5224\u65adchar\u662f\u5426\u5728map\u4e2d\u7b2c\u4e00\u6b21\u51fa\u73b0\r\n                if (map.get(ch) == null) {\r\n                    map.put(ch, 1);\r\n                } else {\r\n                    map.put(ch, map.get(ch) + 1);\r\n                }\r\n            }\r\n\r\n            \/\/3.\u628amap\u4e2d\u6570\u636e\u5b58\u5728\u6587\u4ef6count.txt\r\n            \/\/3.1 \u521b\u5efaWriter\r\n            bw = new BufferedWriter(new FileWriter(\"wordcount.txt\"));\r\n\r\n            \/\/3.2 \u904d\u5386map,\u518d\u5199\u5165\u6570\u636e\r\n            Set&lt;Map.Entry&lt;Character, Integer>> entrySet = map.entrySet();\r\n            for (Map.Entry&lt;Character, Integer> entry : entrySet) {\r\n                switch (entry.getKey()) {\r\n                    case ' ':\r\n                        bw.write(\"\u7a7a\u683c=\" + entry.getValue());\r\n                        break;\r\n                    case '\\t':\/\/\\t\u8868\u793atab \u952e\u5b57\u7b26\r\n                        bw.write(\"tab\u952e=\" + entry.getValue());\r\n                        break;\r\n                    case '\\r':\/\/\r\n                        bw.write(\"\u56de\u8f66=\" + entry.getValue());\r\n                        break;\r\n                    case '\\n':\/\/\r\n                        bw.write(\"\u6362\u884c=\" + entry.getValue());\r\n                        break;\r\n                    default:\r\n                        bw.write(entry.getKey() + \"=\" + entry.getValue());\r\n                        break;\r\n                }\r\n                bw.newLine();\r\n            }\r\n        } catch (IOException e) {\r\n            e.printStackTrace();\r\n        } finally {\r\n            \/\/4.\u5173\u6d41\r\n            if (fr != null) {\r\n                try {\r\n                    fr.close();\r\n                } catch (IOException e) {\r\n                    e.printStackTrace();\r\n                }\r\n\r\n            }\r\n            if (bw != null) {\r\n                try {\r\n                    bw.close();\r\n                } catch (IOException e) {\r\n                    e.printStackTrace();\r\n                }\r\n\r\n            }\r\n        }\r\n\r\n    }\r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[46],"class_list":["post-1319","post","type-post","status-publish","format-standard","hentry","category-java-code","tag-java"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1319"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1319"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1319\/revisions"}],"predecessor-version":[{"id":1320,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1319\/revisions\/1320"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1319"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1319"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1319"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}