解决非controller使用@Autowired注解注入为null问题

@Component
public class UserActivity {
    private static UserActivity userActivity;
    @Autowired
    UserPermissionMapper userPermissionMapper;
    @Autowired
    UserVisitMapper userVisitMapper;
 
    @PostConstruct
    public void init() {//解决非controller使用@Autowired注解注入为null问题
        userActivity = this;
    }    
 
    public void addUserVisitData(String cnName, String groupName, String jobName, JSONObject responseData) {
        userActivity.userVisitMapper.insertData(cnName, groupName, jobName, JSONObject.toJSONString(responseData));
    }
}

注意：引用对象的时候需要userActivity.userVisitMapper不能直接用userVisitMapper