Servlet笔记8--乱码解决方案

乱码解决方案：

　　　代码详解：

package com.bjpowernode.javaweb.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SaveDeptServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    
    
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //Tomcat配置文件中的URIEncoding修改后，doGet方法就已经解决了编码问题
        String dname = request.getParameter("dname");
        System.out.println(dname);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        
        /*
        String dname = request.getParameter("dname");
        
        //第一种解决方式：万能解决方案，post和get都可以使用
        byte[] bytes = dname.getBytes("ISO-8859-1");  //解码
        dname = new String(bytes, "UTF-8");  //编码方式需要同浏览器的的编码方式一致
        System.out.println(dname);
        */
        
        //第二种解决方案：调用request的setCharacterEncoding方法，但是这种方式只适合POST请求，只对请求体编码
        //告诉Tomcat服务器，请求体中的数据采用UTF-8的方式进行编码
        request.setCharacterEncoding("UTF-8");
        String dname = request.getParameter("dname");
        System.out.println(dname);
    }
}