初学J2EE遭遇乱码问题

eclipse中已经设置为utf-8.页面显示前面都没乱
后面就乱了，不知道为啥，改变过tomcat的编码模式，还是不行
网上各种方法解决不了啊。求大神。

解决方案 »

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servlet中做如下操作
//设置解码格式
        response.setContentType("text/html");
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");jsp中，首行如下写法：
<%@ page contentType="text/html; charset=utf-8" language="java" errorPage="" pageEncoding="utf-8"%>检查utf-8的拼写。还不行，请发下jsp和servlet的代码吧。
在JSp开头<%@ page language="java" contentType="text/html;
charset=UTF-8" pageEncoding="UTF-8"%>还有在页面内加入
request.setCharacterEncoding("utf-8");
例如input.jsp：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"contentType="text/html;charset=utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'input.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
  </head>

  <body>
    <div align="center">
    <form method="post" action="SaveName.jsp">
      您的姓名：<input type="text" name="username" size="20">
      <p><input type="submit" value="提交" > <input type="reset" value="重置">
      </p>
      </form>
      </div>
  </body>
</html>
下面是SavaName.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8" contentType="text/html;charset=utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'SaveName.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
  </head>

  <body>
   <%

   request.setCharacterEncoding("utf-8");
   String name = request.getParameter("username");//获取上一页面输入的用户名

   out.println("hello!"+name);
   %>
  </body>
</html>
效果：提交后
先通过控制台检查是在哪个层乱码了，
先看看传输到servlet的时候试试不是乱码，一般都是这里乱码。
如果怎么都解决不了，可以用以下办法：
假设乱码字符串为str1
str2 = new String (str1.getBytes() ,"utf-8");
直接把乱码字符串重编码