{"id":330,"date":"2009-12-26T22:32:17","date_gmt":"2009-12-26T14:32:17","guid":{"rendered":"http:\/\/115.29.108.60\/?p=330"},"modified":"2011-09-26T21:50:08","modified_gmt":"2011-09-26T13:50:08","slug":"%e6%b5%85%e8%b0%88%e5%ad%97%e7%ac%a6%e9%9b%86","status":"publish","type":"post","link":"http:\/\/115.29.108.60\/?p=330","title":{"rendered":"\u6d45\u8c08\u5b57\u7b26\u96c6"},"content":{"rendered":"

\u5f3a\u70c8\u63a8\u8350\u4e00\u7bc7\u6587\u7ae0\uff1a\u7406\u89e3\u5b57\u7b26\u7f16\u7801<\/a><\/p>\n

\u5728\u5199\u7a0b\u5e8f\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5b57\u7b26\u96c6\u7684\u95ee\u9898\u9047\u5230\u8fc7N\u591a\u3002\u67e5\u67e5\u6539\u6539\uff0c\u89e3\u51b3\u95ee\u9898\uff0c\u4e00\u76f4\u6ca1\u6709\u603b\u7ed3\u3002\u8fd9\u6bb5\u65f6\u95f4\u505aJ2EE\u7684\u9879\u76ee\uff0c\u9047\u5230\u4e86\u66f4\u591a\u7684\u5b57\u7b26\u96c6\u95ee\u9898\uff0c\u5728\u89e3\u51b3\u7684\u8fc7\u7a0b\u4e2d\u6536\u83b7\u4e0d\u5c11\u3002\u5199\u7bc7\u6587\u7ae0\u6d45\u8c08\u4e0b\u5b57\u7b26\u96c6\u95ee\u9898\u3002<\/p>\n

\u4e2a\u4eba\u5c06\u5b57\u7b26\u96c6\u7c97\u5206\u4e3a\u4e24\u5927\u7c7b\uff1aASCII\u548cUNICODE\u3002\u7b80\u5355\u4ecb\u7ecd\u4e0b\u5b83\u4eec\uff1a<\/p>\n

\u4f17\u6240\u5468\u77e5\uff0c\u8ba1\u7b97\u673a\u662f\u7f8e\u56fd\u4eba\u53d1\u660e\u7684\u3002\u56e0\u6b64\uff0c\u4e3a\u4e86\u65b9\u4fbf\u4f7f\u7528\u8ba1\u7b97\u673a\uff0c\u90a3\u4e48\u8ba1\u7b97\u673a\u8d77\u7801\u8981\u80fd\u8868\u8fbe\u4ed6\u4eec\uff08\u7f8e\u56fd\u4eba\uff09\u7684\u8bed\u8a00\u3002\u8fd9\u4e5f\u5c31\u662fASCII\uff08\u7f8e\u56fd\u4fe1\u606f\u4ea4\u6362\u6807\u51c6\u4ee3\u7801\uff09\u7684\u7531\u6765\u4e86\u3002\u8ba1\u7b97\u673a\u7684\u6700\u5c0f\u4fe1\u606f\u5355\u4f4d\u662f\u4f4d\uff08bit\uff09\uff0c\u4f46\u66f4\u5e38\u7528\u7684\u57fa\u672c\u4fe1\u606f\u5355\u4f4d\u662f\u5b57\u8282\uff08Byte\uff09\uff0c\u5b83\u4eec\u4e4b\u95f4\u7684\u8f6c\u6362\u662f1Byte = 8bits\uff08\u4e3a\u4ec0\u4e48\u662f8\u800c\u4e0d\u662f2\u30014\u300116\u7b49\uff0c\u6211\u5c31\u4e0d\u5f97\u800c\u77e5\u4e86\uff09\u3002ASCII\u53c8\u5206\u57fa\u7840\u7684\uff087\u4f4d\uff0c\u6700\u9ad8\u4f4d\u7528\u4f5c\u5947\u5076\u6821\u9a8c\uff09\u548c\u6269\u5c55\u7684\uff088\u4f4d\uff09\uff0c\u6700\u591a\u80fd\u8868\u793a256\u4e2a\u5b57\u7b26\u3002\u8fd9\u5bf9\u4e8e\u8868\u793a\u5168\u4e16\u754c\u7684\u8bed\u8a00\u5b57\u7b26\u662f\u4e0d\u53ef\u80fd\u7684\uff0c\u56e0\u6b64\u6709\u4e86UNICODE\u3002<\/p>\n

UNICODE\u7b80\u5355\u7684\u6765\u8bf4\u5c31\u662f\uff0c\u7528\u4e24\u4e2a\u5b57\u8282\uff0816\u4f4d\uff09\u6765\u8868\u793a\u4e00\u4e2a\u5b57\u7b26\u3002\u4f46\u662f\u57fa\u4e8e\u4e0d\u540c\u7684\u8003\u8651\uff08\u5982\u5b58\u50a8\u7a7a\u95f4\uff09\u53c8\u6709UTF-8\u3001UTF-16\u3001UTF-32\u7b49\u4e0d\u540c\u7684\u683c\u5f0f\uff0c\u8fd9\u91cc\u5c31\u4e0d\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u3002<\/p>\n

\u6b63\u662fASCII\u548cUNICODE\u7ed9\u6211\u4eec\u5e26\u6765\u4e86\u5b57\u7b26\u96c6\u95ee\u9898\u3002\u4e00\u4e2a\u6bd4\u8f83\u597d\u7684\u7a0b\u5e8f\uff0c\u5e94\u8be5\u8981\u80fd\u652f\u6301UNICODE\u3002\u5bf9\u4e8e\u6211\u4eec\uff08\u4e2d\u56fd\u4eba\uff09\uff0c\u66f4\u662f\u5982\u6b64\uff0c\u56e0\u4e3a\u6211\u4eec\u4f7f\u7528\u7684\u662f\u6c49\u5b57\u800c\u4e0d\u662f\u82f1\u6587\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u8981\u4ee5\u4e00\u4e2a\u4e0d\u5b8c\u5168\u7684Java Web Server\u4f8b\u5b50\u6765\u8bf4\u8bf4\u4e2a\u4eba\u7684\u7406\u89e3\u3002<\/p>\n

OS\uff08Windows\u3001Unix\u3001Linux\u7b49\uff09\u3001Java\u3001MySQL\u5728\u5168\u4e16\u754c\u6d41\u884c\uff0c\u56e0\u6b64\u5f88\u5bb9\u6613\u9884\u89c1\u5230\u5b83\u4eec\u90fd\u662f\u652f\u6301ASCII\u548cUNICODE\u7684\u3002\u5148\u8bf4\u8bf4OS\uff0c\u4e2a\u4eba\u7528\u7684\u662fWindows XP\uff08\u4e2d\u6587\u7248\uff09\uff08Windows\u5bf9\u4e8e\u672c\u5730\u5316\u7684\u652f\u6301\u6709\u4e2a\u201c\u4ee3\u7801\u9875\u201d\u7684\u6982\u5ff5\uff0c\u5728\u6b64\u4e0d\u8be6\u7ec6\u4ecb\u7ecd\uff09\uff0c\u5f88\u5bb9\u6613\u77e5\u9053OS\u7684\u5b57\u7b26\u96c6\u662fUNICODE\u7684GBK\u3002\u5bf9\u4e8e\u8fd0\u884c\u5728\u8be5OS\u4e0a\u7684Java\u5e73\u53f0\uff0c\u4e5f\u662f\u5982\u6b64\u3002\u800cMySQL\u5bf9\u5b57\u7b26\u96c6\u7684\u652f\u6301\u4e3b\u8981\u8868\u73b0\u5728\u5b83\u7684\u5b58\u50a8\u3002<\/p>\n

\u5728\u4f8b\u5b50\u4e2d\uff0cMySQL\u91c7\u7528latin1\uff08\u79f0\u4e4b\u4e3aASCII\u6216\u8005ISO-8859-1\u90fd\u884c\uff09\uff0c\u800cJSP\u91c7\u7528GB2312\u3002<\/p>\n

\u95ee\u9898\u4e00\uff1aJSP page\u6307\u4ee4\u4e2d\u7684pageEncoding\u5c5e\u6027\u6307\u5b9a\u7684\u5b57\u7b26\u96c6\u662f\u6307\u8be5JSP\u9875\u9762\u88ab\u6253\u5f00\u65f6\uff0cOS\u7528\u54ea\u79cd\u5b57\u7b26\u96c6\u683c\u5f0f\u8bfb\u53d6\u3002\u8fd9\u5c31\u76f8\u5f53\u4e8e\u4f60\u5728\u8bb0\u4e8b\u672c\u91cc\u5199\u7bc7\u6587\u5b57\uff08\u5373\u6709\u82f1\u6587\u53c8\u6709\u4e2d\u6587\uff09\uff0c\u4fdd\u5b58\u7684\u683c\u5f0f\u3002\u5982\u679c\u4e3aASCII\uff0c\u5219\u4e2d\u6587\u4f1a\u4e22\u5931\u539f\u6709\u7684\u4fe1\u606f\uff0c\u4e3aUNICODE\u5219\u80fd\u6b63\u5e38\u663e\u793a\u3002\u56e0\u6b64\uff0c\u5176\u5b9e\u53ea\u8981\u4f60\u5728\u8be5JSP\u91cc\u9762\u7684\u6ce8\u91ca\u4ec5\u6709\u82f1\u6587\uff0c\u662f\u53ef\u4ee5\u8bbe\u7f6e\u8be5\u5c5e\u6027\u4e3aISO-8859-1\u7684\u3002<\/p>\n

\u95ee\u9898\u4e8c\uff1aJSP page\u6307\u4ee4\u4e2d\u7684contentType=”text\/html;charset=gb2312″\u548cHTML\u4e2d\u7684<meta http-equiv=”Content-Type” content=”text\/html; charset=gb2312″ \/>\u610f\u601d\u4e00\u6837\uff0c\u90fd\u662f\u6307\u8be5\u9875\u9762\u7531\u6d4f\u89c8\u5668\u89e3\u6790\u65f6\u91c7\u7528\u7684\u5b57\u7b26\u96c6\u3002<\/p>\n

\u95ee\u9898\u4e09\uff1aJava\u4e2d\u6240\u6709\u5b57\u7b26\u90fd\u662f\u4e24\u4e2a\u5b57\u8282\uff0c\u65e0\u8bba\u662fASCII\u8fd8\u662fUNICODE\uff0c\u4f46\u662f\u5efa\u8bae\u4f60\u4e0d\u8981\u7b80\u5355\u5730\u8ba4\u4e3a\u5b83\u5c31\u662fUNICODE\u3002\u800c\u7f51\u7edc\u4e0a\u4f20\u8f93\u7684\u5b57\u7b26\u662fISO-8859-1\uff081Byte\uff09\u7684\uff08\u56e0\u4e3a\u7f51\u7edc\u4f20\u8f93\u662f\u57fa\u4e8e\u5b57\u8282\u6d41\u7684\uff09\u3002\u6240\u4ee5\u524d\u4e00\u4e2aJSP\u9875\u9762\u7684\u4e2d\u6587\u53c2\u6570\u91c7\u7528POST\u65b9\u6cd5\u4f20\u5230\u540e\u4e00\u4e2a\u9875\u9762\u63a5\u6536\u540e\uff0c\u5b83\u662f\u4e71\u7801\u3002\u8be6\u7ec6\uff1a\u4e00\u4e2a\u6c49\u5b57\u4e24\u4e2a\u5b57\u8282\u90fd\u6709\u6570\u636e**\uff08GB2312\uff09\uff0c\u7f51\u7edc\u4f20\u8f93\u6210* *\uff08ISO-8859-1\uff09\uff0c\u540e\u4e00\u4e2a\u9875\u9762\u63a5\u6536\u540e\u6210#* #*\uff08GB2312\uff09\u4e24\u4e2a\u6c49\u5b57\u56db\u4e2a\u5b57\u8282\u3002\uff08*\u8868\u793a\u6570\u636e\uff0c#\u8868\u793a\u672a\u77e5\uff0c\u7a7a\u683c\u8868\u793a\u5b57\u7b26\u95f4\u9694\uff09\u5f53\u7136\u4e71\u7801\u4e86\u3002\u91cd\u65b0\u7ec4\u5408\u4e0bnew String(data.getBytes(“ISO-8859-1”))\u5c31\u597d\u4e86\uff08\u9ed8\u8ba4\u91c7\u7528\u9875\u9762charset\u7f16\u7801\u7ec4\u5408\u5373GB2312\uff09\u3002\u91c7\u7528GET\u65b9\u6cd5\u5219\u8981\u5728\u524d\u4e00\u4e2a\u9875\u9762\u5148\u5c06\u4e2d\u6587\u7f16\u7801\u540e\u518d\u5728URL\u4e2d\u4f20\u9012\u53c2\u6570\uff1aString msg = java.net.URLEncoder.encode(“\u4e2d\u6587”, “UTF-8”)\uff1b\u5728\u540e\u4e00\u4e2a\u9875\u9762\u53d6\u5f97msg\u540e\uff0c\u5bf9\u5e94\u7684\u4f7f\u7528new String(msg.getBytes(“ISO-8859-1”), “UTF-8”)\u6216\u8005java.net.UREDecoder.decode(msg, “UTF-8”);\u3002<\/p>\n

<\/p>\n

\u95ee\u9898\u56db\uff1a\u6570\u636e\u5e93\u7684\u5b57\u7b26\u96c6\u4e0eJava Web Server\u548crequest\u5bf9\u8c61\u7684\u5b57\u7b26\u96c6\u6700\u597d\u4e00\u81f4\u3002\u4e0d\u8fc7\uff0c\u4e0d\u4e00\u81f4\u4e5f\u6ca1\u6709\u5173\u7cfb\uff0c\u600e\u4e48\u5199\u5c31\u600e\u4e48\u8bfb\u3002\u4f8b\u5982\u6211\u7684\u8bbe\u8ba1\u662f\u9875\u97621\u8d1f\u8d23\u6536\u96c6\u53c2\u6570\uff0c\u9875\u97622\u8d1f\u8d23\u5904\u7406\u53c2\u6570\uff0cJavaBean\u8d1f\u8d23\u6570\u636e\u5e93\u64cd\u4f5c\u3002\u90a3\u4e48\u4e2d\u6587\u53c2\u6570**\u5230\u9875\u9762\u4e8c\u7684\u65f6\u5019\u5df2\u7ecf\u4e71\u7801\u6210#* #*\uff0cJavaBean\u4e2d\u6570\u636e\u5e93\u64cd\u4f5c\u4e5f\u662f#* #*\u4e86\u3002\u5bf9\u4e8elatin1\u7684\u5b57\u7b26\u96c6\uff0c\u6211\u60f3Java\u548cMySQL\u4ea4\u4e92\u7684\u65f6\u5019\u8fdb\u884c\u4e86\u8fd9\u6837\u7684\u53d8\u5316\uff1a#* #*\u53d8\u6210\u4e86* *\uff08\u6ce8\u610f\u8fd9\u91cc\u7684* *\u662f\u4e24\u4e2aASCII\u5b57\u7b26\uff0c\u800c\u4e0d\u662f\u6700\u521d\u7684\u90a3\u4e2aUNICODE\u5b57\u7b26\u4e86\uff09\u3002\u6309\u7406\uff0c\u5728MySQL\u4e2dselect\u8be5\u8bb0\u5f55\uff0c\u5e94\u8be5\u663e\u793a\u4e71\u7801\uff0c\u4f46\u662f\u7531\u4e8eOS\u5b57\u7b26\u96c6\u662fGBK\u7684\uff0c\u56e0\u6b64latin1\u5b57\u7b26\u96c6\u6570\u636e\u5e93\u4e2d\u7684* *\u53c8\u88ab\u7ec4\u5408\u6210\u4e86**\u6b63\u5e38\u663e\u793a\u4e86\uff08\u4e2a\u4eba\u7406\u89e3\uff09\u3002<\/p>\n

\u95ee\u9898\u4e94\uff1aJavaScript\u3001AJAX\u4e0eJSP\u4ea4\u4e92\u5904\u7406\u4e2d\u6587\u3002<\/p>\n

JS\uff1avalue\u521d\u59cb\u503c\u4e3a\u4e2d\u6587\uff0cxmlHttp\u4e3aAJAX\u5bf9\u8c61\u3002<\/p>\n

value = encodeURIComponent(value);\/\/\u8c03\u7528JS\u51fd\u6570\u5bf9\u4e2d\u6587\u8fdb\u884cUTF-8\u7f16\u7801
\nvalue = “regajax.jsp?username=” + value;\/\/URL
\nxmlHttp.onreadystatechange = stateChanged;\/\/xmlHttp\u5bf9\u8c61\u72b6\u6001\u6539\u53d8\u65f6\u8c03\u7528\u51fd\u6570stateChanged
\nxmlHttp.open(“GET”, value, true);
\nxmlHttp.send(null);<\/p>\n

JSP\uff1a<\/p>\n

String username = request.getParameter(“username”);\/\/\u7f51\u7edc\u4f20\u8f93\u4f7f\u7528ISO-8859-1\u5b57\u7b26\u96c6\uff0c\u5f53\u53c2\u6570\u5230\u8fbe\u9875\u9762\u65f6\u91c7\u7528\u9875\u9762\u7f16\u7801\u5b57\u7b26\u96c6\uff0c\u5373GB2312\u3002GB2312\u4e0eUTF-8\u5bf9\u7b80\u4f53\u4e2d\u6587\u7684\u7f16\u7801\u4e00\u81f4\uff0c\u6545\u6b64\u65f6\u7684username\u4e0d\u4e71\u7801\u3002
\nusername = new String(username.getBytes(“GB2312”), “ISO-8859-1”);\/\/MySQL\u91c7\u7528ISO-8859-1\u5b57\u7b26\u96c6\u3002\u63d2\u5165\u8bb0\u5f55\u65f6\uff0c\u6211\u4eec\u5bf9\u4e2d\u6587\u7684\u5904\u7406\u662f\u4ece**\u5230#* #*\uff0c\u518d\u5230* *\uff1b\u67e5\u8be2\u7684\u65f6\u5019\u4e5f\u5e94\u8be5\u5982\u6b64\u5904\u7684#* #*\u5230* *\u3002<\/p>\n

\u4ee5\u4e0aJSP\u4ee3\u7801\u5728NetBeans\u4e2d\u8fd0\u884c\u6ca1\u6709\u95ee\u9898\uff0c\u4f46\u53ef\u80fd\u4f1a\u4ea7\u751f\u95ee\u9898\u4e03\u4e2d\u7684\u95ee\u9898\uff0c\u8fd9\u91cc\u63d0\u4f9b\u4e00\u79cdTomcat\u4e0b\u7684\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n

String username = request.getParameter(“username”);
\nusername = new String(username.getBytes(“ISO-8859-1”), “UTF-8”);
\nusername = new String(username.getBytes(“GB2312”), “ISO-8859-1”);\/\/\u6ce8\u518c\u9875\u9762\u91ccPOST\u65b9\u6cd5\u4f20\u9012\u7ed9\u6570\u636e\u5e93\u7684\u53c2\u6570\u662f\u7531GB2312\u8f6c\u6210ISO-8859-1\u7684\uff0c\u6240\u4ee5\u8fd9\u91cc\u8981\u4e00\u81f4\u3002<\/p>\n

\u95ee\u9898\u516d\uff1aMySQL\u7684\u5907\u4efd\u4e0e\u6062\u590d\u3002\u7a0d\u540e\u4f1a\u7528\u4e00\u6574\u7bc7\u6587\u7ae0\u8bf4\u660e\u3002<\/p>\n

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