idea警告：Field injection is not recommended

1. 使用@Autowire注入时警告：Field injection is not recommended

2. 被警告代码：

    @Autowired
    private EduWorkInfoMapper eduWorkInfoMapper;

    @Autowired
    private IEduExportUserInfoService eduExportUserInfoService;

3. 警告显示：

4. 原因：不建议使用属性注入，其实当你鼠标滑动到@Autowired上面，同时按下alt+enter键时，就会看到下面这样的提示

这说明编辑器建议你使用构造注入的方式进行bean的注入。

5. 说明：

参考地址

http://vojtechruzicka.com/field-dependency-injection-considered-harmful/

https://www.petrikainulainen.net/software-development/design/why-i-changed-my-mind-about-field-injection/

https://stackoverflow.com/questions/39890849/what-exactly-is-field-injection-and-how-to-avoid-it

http://www.bubuko.com/infodetail-2048216.html （从StackOverflow翻译过来的）

6. 解决方法：

参考地址：http://blog.csdn.net/jeikerxiao/article/details/77161680

    private IWorkLoadService workLoadService;
    private IEduExportUserInfoService eduExportUserInfoService;
    private IWorkLoadJobsService workLoadJobsService;

    @Autowired
    public WorkLoadController( IWorkLoadService workLoadService
            ,IEduExportUserInfoService eduExportUserInfoService
            ,IWorkLoadJobsService workLoadJobsService ){
        this.workLoadService = workLoadService;
        this.eduExportUserInfoService = eduExportUserInfoService;
        this.workLoadJobsService = workLoadJobsService;
    }