建什么网站 做 cpa/厦门网站外包
在使用jsp的时候，总会遇到中文乱码问题，几天不会的Filter 解决中文乱码的问题，今天解决了。。。也不知到什么缘由，之前的400,错误消失啦，赶忙记录下。。。html
1.index.jspjava
Insert title here用Filter解决中文乱码问题
姓名:
2.接下来则是，对于提交的到display的表单，添加servlet，新建cn.edu.hpu.servlet包，在包下建立DispalyServlet的Servletweb
DispalyServlet.java
app
package cn.edu.hpu.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class DispalyServlet
*/
@WebServlet("/display")//注意这里的url
public class DispalyServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public DispalyServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("Message from display servlet.");
response.setCharacterEncoding("utf8");
request.getRequestDispatcher("/display.jsp").forward(request, response);
}
}3.接收页面 display.jsp
pageEncoding="UTF-8"%>
Insert title here您输入的姓名是:
4.这里是最重要的，添加过滤Filter
package cn.hpu.edu.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
/**
* Servlet Filter implementation class FilterServlet
*/
@WebFilter("/*")
public class FilterServlet implements Filter {
private FilterConfig config = null;
/**
* Default constructor.
*/
public FilterServlet() {
// TODO Auto-generated constructor stub
}
/**
* @see Filter#destroy()
*/
public void destroy() {
// TODO Auto-generated method stub
}
/**
* @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
// TODO Auto-generated method stub
// place your code here
// pass the request along the filter chain
System.out.println("Message from before encoding filter.");
String encoding = config.getInitParameter("encoding");
request.setCharacterEncoding(encoding);
response.setCharacterEncoding(encoding);
chain.doFilter(request, response);
System.out.println("Message after before encoding filter.");
}
/**
* @see Filter#init(FilterConfig)
*/
public void init(FilterConfig config) throws ServletException {
// TODO Auto-generated method stub
this.config = config;
}
}同时要在web.xml中配置Filter的初始化内容
endodingFilter
cn.hpu.edu.filter.FilterServlet
encoding
UTF-8
endodingFilter
/*
到这里，咱们就实现了用Filter解决中文乱码问题