本文主要是介绍foreach 查出BIGTYPE,SMALLTYPE,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
package com.qfedu.springboot.ssm.mapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.qfedu.springboot.ssm.entity.Cate;
import com.qfedu.springboot.ssm.entity.User;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
@SpringBootTest
class UserMapperTest {
@Autowired
private UserMapper userMapper;
@Autowired
private CateMapper cateMapper;
@Test
void test1(){
User user = new User();
// user.setId(111L);
// user.setAge(11);
//
// user.setEmail("qq@qq.com");
// user.setName("csj");
// userMapper.insert(user);
List<User> users = userMapper.selectList(null);
// List<User> focList = new ArrayList<>();
ArrayList<String> list=new ArrayList();
for (User user1 : users) {
// user1.setBigType(user1.getAge()+1000);
// String id = "1";
// String id = user1.getBigType();
// String id2 = user1.getSmallType();
// System.out.println(id);
// System.out.println("================================");
// System.out.println(user1.getBigType());
// System.out.println("~~~~~~~~~~~~~~~~~~~~");
// Cate cate = cateMapper.selectById(user1.getBigType());
// System.out.println(cate);
// Cate cate2 = cateMapper.selectById(user1.getSmallType());
// System.out.println(cate.getName());
user1.setBigType(cateMapper.selectById(user1.getBigType()).getName());
user1.setSmallType(cateMapper.selectById(user1.getSmallType()).getName());
}
for (User user1 : users) {
System.out.println(user1);
}
}
@Test
void test2(){
QueryWrapper<User> wrapper = new QueryWrapper<>();
wrapper.eq("name", "csj");
List<User> users = userMapper.selectList(wrapper);
System.out.println(users);
}
}
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