JSP开发应用是,中文乱码是个比较常见的问题,其根源是:Web容器默认的字符处理编码是ISO-8859-1。
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: <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>
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: <% 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>
- </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:
解决方法:在doPost中加入:
- response.setContentType("text/html; charset=gb2312");