注册页面的servlet

package cn.itcast.travel.web.servlet;

import cn.itcast.travel.domain.ResultInfo;import cn.itcast.travel.domain.User;import cn.itcast.travel.service.UserService;import cn.itcast.travel.service.impl.UserServiceImpl;import com.fasterxml.jackson.databind.ObjectMapper;import org.apache.commons.beanutils.BeanUtils;

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.lang.reflect.InvocationTargetException;import java.util.Map;

/** * @author newcityman * @date 2019/9/26 - 0:16 */@WebServlet("/registUserServlet")public class RegistUserServlet extends HttpServlet {    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        //1、获取参数        Map<String, String[]> map = request.getParameterMap();        //2、封装对象User        User user = new User();        try {            BeanUtils.populate(user,map);        } catch (IllegalAccessException e) {            e.printStackTrace();        } catch (InvocationTargetException e) {            e.printStackTrace();        }        //3、调用service方法        UserService service = new UserServiceImpl();        Boolean flag=service.regist(user);        ResultInfo info = new ResultInfo();        //4、响应数据        if (flag){            //注册成功            info.setFlag(true);        }else{            //注册失败            info.setFlag(false);            info.setErrorMsg("注册失败");        }

        //将info对象序列化为json数据，写回客户端        ObjectMapper mapper = new ObjectMapper();        String json = mapper.writeValueAsString(info);        response.setContentType("application/json;charset=utf-8");        response.getWriter().write(json);    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        this.doPost(request, response);    }}

原文地址：https://www.cnblogs.com/newcityboy/p/11588568.html