请求指点一下jsp乱码（菜鸟）

2012-05-05

请求指点一下jsp乱码（初学者）先通过一个jsp表单把数据post给servlet，然后servlet把数据存储在Bean中，最后S

请求指点一下jsp乱码（初学者）
先通过一个jsp表单把数据post给servlet，然后servlet把数据存储在Bean中，最后Servlet转发到jsp页面显示数据。

HTML code

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><title>ues javaBean in jsp and servlet</title></head><body><form action="customer.do" method="post"> <table border="1">   <tr>     <td>客户名</td><td><input type="text" name="custName"></td>     <td>邮件地址</td><td><input type="text" name="email"></td>     <td>电话</td><td><input type="text" name="phone"></td>     <td><input type="submit" value="submit"></td>     <td><input type="reset" value="reset"></td>   </tr> </table></form></body></html>

Servlet:

Java code

package info.control;import info.model.CustomerBean;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.RequestDispatcher;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;/** * Servlet implementation class CustomerServlet */public class CustomerServlet extends HttpServlet {    private static final long serialVersionUID = 1L;    /**     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)     */    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        // TODO Auto-generated method stub    }    /**     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)     */    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        // TODO Auto-generated method stub            //设置属性        CustomerBean customer=new CustomerBean();        customer.setCustName(request.getParameter("custName"));        customer.setEmail(request.getParameter("email"));        customer.setPhone(request.getParameter("phone"));        // 在session作用域共享customer对象        HttpSession session=request.getSession();        synchronized(session)        {            session.setAttribute("customer", customer);        }        //转发到jsp页面        RequestDispatcher view =request.getRequestDispatcher("/displayCustomer.jsp");        view.forward(request, response);    }}

javaBean:

Java code

package info.model;public class CustomerBean implements java.io.Serializable {    /**     *      */    private static final long serialVersionUID = 1L;    private String custName;    private String email;    private String phone;    // 属性访问    public String getCustName()    {        return this.custName;    }    public String getEmail()    {        return this.email;    }    public String getPhone()    {        return this.phone;    }    //修改方法    public void setCustName(String custName)    {        this.custName=custName;    }    public void setEmail(String email)    {        this.email=email;    }    public void setPhone(String phone)    {        this.phone=phone;    }    }

显示数据的jsp:

HTML code

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><jsp:useBean id="customer" class="info.model.CustomerBean" scope="session" >  <jsp:setProperty name="customer" property="*" /></jsp:useBean><html><head><title>display customer</title></head><body> <table border="1">  <tr>      <td>客户名：</td>      <td><jsp:getProperty name="customer" property="custName" /></td>  </tr>  <tr>    <td>地址：</td>    <td><jsp:getProperty name="customer" property="email" /></td>  </tr>  <tr>    <td>电话</td>    <td><jsp:getProperty name="customer" property="phone"/></td>  </tr> </table></body></html>

问题出来了：先访问http://localhost:8080/UseBean/inputCustomer.jsp ，中文显示正常，但是当填完表单提交后最后显示的通过表单传过来的中文都乱码了，比如：我在表单【客户名】一栏填写【张三】，最后这个【张三】就乱码了，我google了一些，但是网上说的好像又适合我这个特例，我刚开始接触javaWEB这块，我对SE中的乱码有一些了解，对于WEB这块的乱码不是很熟悉，想通过这个demo了解熟悉一下WEB中乱码是怎么回事，希望大家指点一下，谢谢了。

[解决办法]
填个英文名看行不行啊？
[解决办法]
你在servlet中打印一下吧应该也是乱码了

试试这样

Java code

customer.setCustName(new String(request.getParameter("custName").getBytes(),"utf-8"));
[解决办法]
指点指点：指指点点~
把body内容再定义为utf-8试试~
[解决办法]
哈哈，都这样一步步走过来的，虽然说不上深层次的原理，但是可以建议几步： 
 1.打断点看看CustomerServlet ，request.getParameter( "custName ") 等传过来是否乱码 
 2.是的话在post 方法第一行添加req.setCharacterEncoding( "utf-8 "); 
 3.不是的话在跳转之前添加 
 response.setContentType( "text/html;charset=UTF-8 ");  
 response.setCharacterEncoding( "UTF-8 "); 
 4.试试吧，
[解决办法]
通用的解决方案写个过滤器试试
[解决办法]
看看这个博客：http://blog.csdn.net/wenjie4892543/article/details/6697326
[解决办法]
楼主，我的博客：http://blog.csdn.net/wangbaoyin/article/details/7457087
[解决办法]
你项目的编码是什么编码格式，或者说JAVA类文件的编码。是UTF-8吗？
还有就是
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
[解决办法]
导入spring包，在web.xml中加入以下过滤器
XML code<filter>   <filter-name>characterEncodingFilter</filter-name>    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>    <init-param>     <param-name>encoding</param-name>     <param-value>utf8</param-value>    </init-param>   </filter>
[解决办法]
探讨

导入spring包，在web.xml中加入以下过滤器
XML code
<filter>   
<filter-name>characterEncodingFilter</filter-name>    
 
 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>   
 <init-……

[解决办法]
5L的方法就可以的撒
[解决办法]
req.setCharacterEncoding( "gbk ");  

[解决办法]
楼主在servlet中加
response.setContentType("text/html;charset=UTF-8");试试

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请求指点一下jsp乱码（菜鸟）