Request请求参数中文乱码问题

少说点话，先来个表单，get请求，提交跑/myRequest/requestDemo4接口

 所以来个接口，接收参数输出

package com.lingaolu.request;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.*;
import java.io.IOException;

/**
 * @author 林高禄
 * @create 2020-07-07-12:06
 */
@WebServlet("/requestDemo4")
public class RequestDemo4 extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String name = request.getParameter("name");
        System.out.println("名字为："+name);
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String name = request.getParameter("name");
        System.out.println("名字为："+name);
        this.doPost(request,response);
    }
}

表单发出请求

 

请求结束，后台输出

中文能正常输出

把表单改为post请求

 同样的操作发出请求，后台输出

 

出现了乱码，不要怕，加一行代码，因为我们的html表单的编码方式为uft-8,所以接口加上这段代码request.setCharacterEncoding("utf-8");

package com.lingaolu.request;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.*;
import java.io.IOException;

/**
 * @author 林高禄
 * @create 2020-07-07-12:06
 */
@WebServlet("/requestDemo4")
public class RequestDemo4 extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        String name = request.getParameter("name");
        System.out.println("名字为："+name);
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String name = request.getParameter("name");
        System.out.println("名字为："+name);
        this.doPost(request,response);
    }
}

重启，还是post请求，请求，后台输出

这就解决了乱码问题