一、servlet-处理请求参数中文乱码问题

乱码问题

//get方式目前不需要设置编码（基于Tomcat8）
//如果是get请求发送的中文数据，转码稍微有点麻烦（Tomcat8之前）
String fname=request.getParameter("fname");
//1.将字符串打散成字节数组
byte[] bytes=fname.getBytes("ISO-8859-1");
//2.将字节数组按照设定的编码重新组装成字符串
fname=new String(bytes,"UTF-8");

package com.atguigu.servlets;

import com.atguigu.fruit.dao.FruitDAO;
import com.atguigu.fruit.dao.impl.FruitDAOImpl;
import com.atguigu.fruit.pojo.Fruit;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

public class AddServlet extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

       //post方式下，设置编码，防止中文乱码
       //需要注意的是，设置编码这一句代码必须在所有的获取参数动作之前
        request.setCharacterEncoding("UTF-8");

        String fname = request.getParameter("fname");
        String priceStr=request.getParameter("price");
        Integer price =Integer.parseInt(priceStr);
        String fcountStr = request.getParameter("fcount");
        Integer fcount=Integer.parseInt(fcountStr);
        String remark=request.getParameter("remark");

        FruitDAO fruitDAO=new FruitDAOImpl();
        boolean flag=fruitDAO.addFruit(new Fruit(0,fname,price,fcount,remark));
        System.out.println(flag ? "添加成功！":"添加失败！");
    }
}