JSP中文乱码常见3个例子及其解决方法-巨人网络通讯

JSP中文乱码常见3个例子及其解决方法

常见3个例子及其解决方法如下

实例一、JSP页面显示时

html> 
  head> 
    title>中文乱码——JSP页面显示时/title> 
  /head> 
  body> 
    center> 
      br/> 
      h1>木兰辞拟古决绝词柬友/h1> 
      p>人生若只如初见，何事秋风悲画扇。/p> 
    p>等闲变却故人心，却道故人心易变。/p> 
    p>骊山语罢清宵半，泪雨霖铃终不怨。/p> 
    p>何如薄幸锦衣郎，比翼连枝当日愿。/p> 
    /center> 
  /body> 
/html>

运行结果：

解决方法：为其指定中文字符集，html>前加入

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

实例二、JSP页面传递中文参数时

注册页面：

%@ page contentType="text/html;charset=gb2312" %> 
html> 
  head> 
    title>中文乱码——JSP页面传递中文参数时/title> 
  /head> 
  body> 
    h2>申请账号：/h2> 
    form action="userMsg.jsp" method="POST"> 
      p>邮箱：nbsp;input type="text"name="email" id="email"/>p/> 
      p>昵称：nbsp;input type="text"name="nickname" id="nickname"/>p/> 
      p>密码：nbsp;input type="password"name="password" id="password"/>p/> 
      p>性别：nbsp;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">一句话介绍自己.../textarea> 
      p>input type="submit"value="提交申请">/p> 
    /form> 
  /body> 
/html>

个人信息页面：

%@ page contentType="text/html;charset=gb2312" %> 
html> 
  head> 
    title>中文乱码——JSP页面传递中文参数时 /title> 
  /head> 
  body> 
    center> 
      h2>用户信息：/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>邮箱：nbsp;% out.print(email); %>p/> 
      p>昵称：nbsp;% out.print(nickname); %>p/> 
      p>密码：nbsp;% out.print(password); %>p/> 
      p>性别：nbsp;% out.print(sex); %>p/> 
      p>个人介绍：%out.print(introduction); %>/p> 
    /center> 
  /body> 
/html>

运行结果：

解决方法：修改个人信息页面如下

%@ page contentType="text/html;charset=gb2312" %> 
html> 
  head> 
    title>中文乱码——JSP页面传递中文参数时 /title> 
  /head> 
  body> 
    h2>用户信息：/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>邮箱： % out.print(email); %>p/> 
    p>昵称： % out.print(nickname); %>p/> 
    p>密码： % out.print(password); %>p/> 
    p>性别： % out.print(sex); %>p/> 
    p>个人介绍：%out.print(introduction); %>/p> 
  /body> 
/html>

实例三、Servlet处理中文参数时

注册页面：

%@ page contentType="text/html;charset=gb2312" %> 
%@ page import="test.UserMsg"%> 
html> 
  head> 
    title>中文乱码——JSP页面传递中文参数时/title> 
  /head> 
  body> 
    h2>申请账号：/h2> 
    form action="./UserMsg" method="POST"> 
      p>邮箱： input type="text"name="email" id="email"/>p/> 
      p>昵称： input type="text"name="nickname" id="nickname"/>p/> 
      p>密码： input type="password"name="password" id="password"/>p/> 
      p>性别： 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">一句话介绍自己.../textarea> 
      p>input type="submit"value="提交申请">/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>" +"用户信息："+ "/h2>"); 
      out.print("p>"+"邮箱："+request.getParameter("email")+"p/>"); 
      out.print("p>"+"昵称："+request.getParameter("nickname")+"p/>"); 
      out.print("p>"+"密码："+request.getParameter("password")+"p/>"); 
      out.print("p>"+"性别："+request.getParameter("sex")+"p/>"); 
      out.print("p>"+"个人介绍："+request.getParameter("introduction")+"p/>"); 
      out.print("/html>"); 
      out.print("/body>"); 
   } 
}

运行结果：