Spring @Autowired注解在utils静态工具类

@Autowired 
private ItemMapper itemMapper;

@Component  
public class TestUtils {     
@Autowired    
private ItemService itemService;

@Autowired    
private ItemMapper itemMapper;
          
public static TestUtils testUtils; 
         
@PostConstruct     
public void init() {
testUtils = this;     }          
 //utils工具类中使用service和mapper接口的方法例子，用"testUtils.xxx.方法" 就可以了    
public static void test(Item record){         
testUtils.itemMapper.insert(record);
testUtils.itemService.queryAll();
     }
 }