Java web第四次作业

要求：读取xml文件并在页面中显示出来。

采用三种方式实现，并体会其中的原理：

1.常规方式，controlller控制器不分层

代码：@RestController

public class PoetController {

    @RequestMapping("/listPoet")

    public Result list(){

        String file = this.getClass().getClassLoader().getResource("poet.xml").getFile();

        System.out.println(file);

        List poetList= XmlParserUtils.parse(file, Poet.class);

        poetList.stream().forEach(poet ->{

            String gender=poet.getGender;

            if("1".equals(gender)){

                poet.setGender("男");

            }

            else if("2".equals(gender)){

                poet.setGender("女");

            }

        });

        return Result.success(poetList);

    }

}

2.按照MVC的分层方式实现，常规java代码方式

3.采用控制反转和依赖注入的MVC方式实现。

代码：@Component

public class PoetDaoA implements PoetDao {

   @Override

    public List listPoet() {

        String file=this.getClass().getClassLoader().getResource("poet.xml").getFile();

        System.out.println(file);

        List poetList= XmlParserUtils.parse(file,Poet.class);

        System.out.println(poetList);

        return poetList;

    }

}

@Component

public class PoetServiceA implements PoetService {

    @Autowired

    private PoetDao poetDao;

    @Override

    public List listPoet() {

        List poetList=poetDao.listPoet();

        poetList.stream().forEach(poet -> {

            String gender = poet.getGender;

           if ("1".equals(gender)) {

                poet.setGender("男");

            } else if ("2".equals(gender)) {

                poet.setGender("女");

            }

        });

        return poetList;

    }

}

@RestController

public class PoetController {

    private PoetService poetService;

   @RequestMapping("/poetlist2")

    public Result list(){

       List poetList=poetService.listPoet();

        return Result.success(poetList);

    }

}