@PostConstruct使用

package com.ruben;
import com.ruben.dao.MpUserMapper;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import javax.annotation.PostConstruct;
import javax.annotation.Resource;
@SpringBootTest
class SimpleSpringbootApplicationTests {
    private String name;
    @PostConstruct
    public void init() {
        name = "ruben";
    }
    @Test
    void test() {
        System.out.println(name);
    }
}

package com.ruben;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.ruben.dao.MpUserMapper;
import com.ruben.pojo.dataObject.UserDataObject;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.util.List;
@SpringBootTest
class SimpleSpringbootApplicationTests {
    private String name;
    @Resource
    private MpUserMapper mpUserMapper;
    private static MpUserMapper staticMpUserMapper;
    @PostConstruct
    public void init() {
        name = "achao";
        staticMpUserMapper = mpUserMapper;
    }
    @Test
    void test() {
        System.out.println(name);
        List<UserDataObject> users = selectList(name);
        users.forEach(System.out::println);
    }
    public static List<UserDataObject> selectList(String name) {
        return staticMpUserMapper.selectList(Wrappers.lambdaQuery(UserDataObject.builder().build()).eq(UserDataObject::getUsername, name));
    }
}