常見JSP中文亂碼例子及其解決方案

來源:互聯網
上載者:User

JSP開發應用是,中文亂碼是個比較常見的問題,其根源是:Web容器預設的字元處理編碼是ISO-8859-1。

執行個體一、JSP頁面顯示時

<html>    <head>       <title>中文亂碼——JSP頁面顯示時</title>    </head>    <body>       <center>           <br/>           <h1>木蘭辭擬古決絕詞柬友</h1>           <p>人生若只如初見,何事秋風悲畫扇。</p>         <p>等閑變卻故人心,卻道故人心易變。</p>         <p>驪山語罷清宵半,淚雨霖鈴終不怨。</p>         <p>何如薄倖錦衣郎,比翼連枝當日願。</p>       </center>    </body></html>

運行結果:

 

解決方案:為其指定中文字元集,<html>前加入

<%@ page contentType="text/html;charset=gb2312" %>

執行個體二、JSP頁面傳遞中文參數時

註冊頁面:

<%@ page contentType="text/html;charset=gb2312" %><html>    <head>       <title>中文亂碼——JSP頁面傳遞中文參數時</title>    </head>    <body>       <h2>申請帳號:</h2>       <form action="userMsg.jsp" method="POST">           <p>郵箱: <input type="text"name="email" id="email"/><p/>           <p>暱稱: <input type="text"name="nickname" id="nickname"/><p/>           <p>密碼: <input type="password"name="password" id="password"/><p/>           <p>性別: <input type="radio"name="sex" id="sex"value="男" /> 男                         <input type="radio" name="sex"id="sex" value="女" /> 女<p/>           <textarea  name="introduction"id="introduction" rows="5" cols="27">一句話介紹自己...</textarea>           <p><input type="submit"value="提交申請"></p>       </form>    </body></html>

個人資訊頁面:

<%@ page contentType="text/html;charset=gb2312" %><html>    <head>       <title>中文亂碼——JSP頁面傳遞中文參數時 </title>    </head>    <body>       <center>           <h2>使用者資訊:</h2>           <% String email = request.getParameter("email"); %>           <% String nickname = request.getParameter("nickname"); %>           <% String password = request.getParameter("password"); %>           <% String sex = request.getParameter("sex"); %>           <% String introduction = request.getParameter("introduction");%>           <p>郵箱: <% out.print(email); %><p/>           <p>暱稱: <% out.print(nickname); %><p/>           <p>密碼: <% out.print(password); %><p/>           <p>性別: <% out.print(sex); %><p/>           <p>個人介紹:<%out.print(introduction); %></p>       </center>    </body></html>

運行結果:

解決方案:修改個人資訊頁面如下

<%@ page contentType="text/html;charset=gb2312" %><html>    <head>       <title>中文亂碼——JSP頁面傳遞中文參數時 </title>    </head>    <body>       <h2>使用者資訊:</h2>       <% String email = newString(request.getParameter("email").getBytes("ISO-8859-1"), "gb2312");%>       <% String nickname = newString(request.getParameter("nickname").getBytes("ISO-8859-1"), "gb2312");%>       <% String password = newString(request.getParameter("password").getBytes("ISO-8859-1"), "gb2312");%>       <% String sex = newString(request.getParameter("sex").getBytes("ISO-8859-1"), "gb2312");;%>       <% String introduction = newString(request.getParameter("introduction").getBytes("ISO-8859-1"), "gb2312");;%>       <p>郵箱: <% out.print(email); %><p/>       <p>暱稱: <% out.print(nickname); %><p/>       <p>密碼: <% out.print(password); %><p/>       <p>性別: <% out.print(sex); %><p/>       <p>個人介紹:<%out.print(introduction); %></p>    </body></html>

執行個體三、Servlet處理中文參數時

註冊頁面:

<%@ page contentType="text/html;charset=gb2312" %><%@ page import="test.UserMsg"%><html>    <head>       <title>中文亂碼——JSP頁面傳遞中文參數時</title>    </head>    <body>       <h2>申請帳號:</h2>       <form action="./UserMsg" method="POST">           <p>郵箱: <input type="text"name="email" id="email"/><p/>           <p>暱稱: <input type="text"name="nickname" id="nickname"/><p/>           <p>密碼: <input type="password"name="password" id="password"/><p/>           <p>性別: <input type="radio"name="sex" id="sex"value="男" /> 男                         <input type="radio" name="sex"id="sex" value="女" /> 女<p/>           <textarea  name="introduction"id="introduction" rows="5" cols="27">一句話介紹自己...</textarea>           <p><input type="submit"value="提交申請"></p>       </form>    </body></html>

UserMsg.java(Servlet)

package test; importjava.io.IOException;importjava.io.PrintWriter;importjava.io.UnsupportedEncodingException; importjavax.servlet.http.HttpServlet;importjavax.servlet.http.HttpServletRequest;importjavax.servlet.http.HttpServletResponse;public classUserMsg extends HttpServlet{      public void doGet(HttpServletRequestrequest,                 HttpServletResponse response){           doPost(request, response);      }      public void doPost(HttpServletRequestrequest,                 HttpServletResponse response){           try {                 request.setCharacterEncoding("gb2312");           } catch (UnsupportedEncodingExceptione) {                 e.printStackTrace();           }           PrintWriter out = null;           try {                 out = response.getWriter();           } catch (IOException e1) {                 e1.printStackTrace();           }           out.print("<html>");           out.print("<body>");           out.print("<h2>" +"使用者資訊:"+ "</h2>");           out.print("<p>"+"郵箱:"+request.getParameter("email")+"<p/>");           out.print("<p>"+"暱稱:"+request.getParameter("nickname")+"<p/>");           out.print("<p>"+"密碼:"+request.getParameter("password")+"<p/>");           out.print("<p>"+"性別:"+request.getParameter("sex")+"<p/>");           out.print("<p>"+"個人介紹:"+request.getParameter("introduction")+"<p/>");           out.print("</html>");           out.print("</body>");      }}

運行結果:


解決方案:在doPost中加入:

response.setContentType("text/html; charset=gb2312");

 

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