src/main/java/com/hwua/erhai/controller/MyDetailServlet.java

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

package com.hwua.erhai.controller;

import com.hwua.erhai.entity.User;
import com.hwua.erhai.model.MUser;
import com.hwua.erhai.service.IUserService;
import com.hwua.erhai.service.impl.MockUserService;
import com.hwua.erhai.service.query.QueryCondition;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

@WebServlet(name = "MyDetailServlet", value = "/myDetail")
public class MyDetailServlet extends HttpServlet {
    IUserService userService = new MockUserService();
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        //从客户端请求里，读取出查询汽车的ID 参数请求是在carList.jsp传过来
        String userId = request.getParameter("userId");
        List<QueryCondition> queryConditionList = new ArrayList<>();

        //添加carId参数到queryConditionList中，生成数据库SQL查询的条件清单，也就是queryConditions(查询的条件清单)
        queryConditionList.add(new QueryCondition("userId", userId));
        //根据查询条件queryConditionList，返回一条数据给carList集合，从索引好0开始
        List<User> userList = userService.queryUsers(queryConditionList, 1, 0);
        if (userList == null || userList.size() == 0) {

            request.setAttribute("message", "找不到该用户");
            request.getRequestDispatcher("/userFoundError.jsp").forward(request, response);
            return;
        }
        if (userList.size() > 1) {
            request.setAttribute("message", "找到多个用户");
            request.getRequestDispatcher("/userFoundError.jsp").forward(request, response);
            return;
        }
        //获取carList索引为0的对象car
        User user = userList.get(0);
        //把car数据写入mCar里，mCar用于保存查询的条件，将其按照查询传入的值，填写到搜索表单中
        MUser mUser = new MUser();
        mUser.setId(String.valueOf(user.getId()));
        mUser.setUsername(String.valueOf(user.getUserName()));
        mUser.setPassword(String.valueOf(user.getPassword()));
        mUser.setSex(user.getSex() == 0 ? "男" : "女");
        mUser.setIdNumber(String.valueOf(user.getIdNumber()));
        mUser.setTel(String.valueOf(user.getTel()));
        mUser.setAddr(String.valueOf(user.getAddr()));
        mUser.setType(user.getType() == 0 ? "普通用户" : "管理员");

        mUser.setImagePath(String.format("upload/user_%d.img", user.getId()));
        mUser.setImagePath(String.format("upload/user_%d.img?t=%d", user.getId(), System.currentTimeMillis()));

        request.setAttribute("mUser", mUser);

        request.getRequestDispatcher("/myDetail.jsp").forward(request, response);