* 中文乱码问题：
* get方式：tomcat 8 已经将get方式乱码问题解决了
* post方式：会乱码
* 解决：在获取参数前，设置request的编码request.setCharacterEncoding("utf-8");
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>注册页面</title></head><body><form action="/day12/requestDemo7" method="get"><input type="text" placeholder="请输入用户名" name="username"><br><input type="text" placeholder="请输入密码" name="password"><br><input type="checkbox" name="hobby" value="game">游戏<input type="checkbox" name="hobby" value="study">学习<br><input type="submit" value="注册"></form></body></html>
package com.learn.web.request;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;import java.util.Enumeration;import java.util.Map;import java.util.Set;@WebServlet("/requestDemo7")public class RequestDemo7 extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//1.设置流的编码request.setCharacterEncoding("utf-8");//获取请求参数usernameString username = request.getParameter("username");System.out.println(username);}protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doPost(request,response);}}
![[javaweb] servlet处理请求参数中文乱码的问题](https://1200zi.500zi.com/uploadfile/img/14/808/5951973991cf40d13b8474b61b1c96dd.jpg)
