10.5 请求参数中乱码的解决方案-post请求

action /项目名/虚拟路径名

package com.itheima.web;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.IOException;
/**
 *  中文乱码问题解决方案
 */
@WebServlet("/req4")  //action  /项目名/虚拟路径名
public class RequestDemo4 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 1. 解决乱码：POST，getReader（）是读取流  获取的是一个输入流的数据，设置编码
        request.setCharacterEncoding("UTF-8"); // 设置字符输入流的编码
        // 2. 获取username  getParameter是读取字符串
        String username = request.getParameter("username");// 获取表单中参数为name = username的对应值（就是文本框输入的用户名）
        System.out.println(username);
        String password = request.getParameter("password");
        System.out.println(password);
    }
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doGet(request, response);
    }
}