Question

我想使用mongodb实现通用DAO。我的观点是不要只创建一个多个存储库。这样代码就是实用和对象。我能够创建几个类和interfesów，但得到错误。

我的代码：

Dao.java

    <?xml version="1.0" encoding="utf-8"?>
<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/scroll"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/mainLayout">


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Profile"
            android:id="@+id/ProfHead"
            android:layout_alignParentTop="true"
            android:layout_marginTop="20dp"
            android:layout_centerHorizontal="true"
            />

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:scaleType="fitCenter"
            android:id="@+id/imageProfile"
            android:src="@drawable/profile_icon"
            android:layout_marginTop="20dp"
            android:layout_marginBottom="20dp"
            android:layout_above="@+id/contactsBtn"
            android:layout_below="@+id/ProfHead" />



        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Home Phone a"
            android:id="@+id/anchor1"
            android:visibility="invisible"
            android:layout_alignLeft="@+id/nameHead"
            android:layout_alignStart="@+id/nameHead" />


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Name"
            android:id="@+id/nameHead"
            android:layout_below="@+id/patProfHead"
            android:layout_marginTop="200dp"
            android:layout_marginLeft="20dp"
            android:layout_alignParentLeft="true"/>


        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Contacts >"
            android:id="@+id/contactsBtn"
            android:layout_above="@+id/editName"
            android:layout_toRightOf="@id/anchor1"/>


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="20dp"
            android:id="@+id/editName"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_below="@+id/nameHead"
            android:layout_marginLeft="20dp"
            android:layout_alignParentLeft="true"
            android:text="Name"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Surname"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_marginRight="20dp"
            android:id="@+id/editSurname"
            android:layout_below="@+id/nameHead"
            android:layout_toRightOf="@id/editName"/>



        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Sex"
            android:id="@+id/sexHead"
            android:layout_marginTop="10dp"
            android:layout_below="@id/editName"
            android:layout_alignParentLeft="true"
            android:layout_marginLeft="20dp"

            />


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@+id/anchor1"
            android:text="Sex"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_alignBottom="@id/sexHead"
            android:id="@+id/radioGroup">

        </TextView>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Age"
            android:id="@+id/ageHead"
            android:layout_below="@id/sexHead"
            android:layout_marginTop="10dp"
            android:layout_alignParentLeft="true"
            android:layout_marginLeft="20dp"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="20dp"
            android:text="Age"
            android:id="@+id/editAge"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_toRightOf="@id/anchor1"
            android:layout_alignBaseline="@id/ageHead"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="DOB"
            android:id="@+id/dobHead"
            android:layout_below="@id/ageHead"
            android:layout_marginTop="10dp"
            android:layout_alignParentLeft="true"
            android:layout_marginLeft="20dp"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="20dp"
            android:text="DOB"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:id="@+id/editDob"
            android:layout_toRightOf="@id/anchor1"
            android:layout_alignBaseline="@id/dobHead"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Height"
            android:id="@+id/heightHead"
            android:layout_below="@id/dobHead"
            android:layout_marginTop="10dp"
            android:layout_alignParentLeft="true"
            android:layout_marginLeft="20dp"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="20dp"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Height"
            android:id="@+id/editHeight"
            android:layout_toRightOf="@id/anchor1"
            android:layout_alignBaseline="@id/heightHead"/>


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Weight"
            android:id="@+id/weightHead"
            android:layout_below="@id/heightHead"
            android:layout_marginTop="10dp"
            android:layout_alignParentLeft="true"
            android:layout_marginLeft="20dp"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Weight"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:id="@+id/editWeight"
            android:layout_toRightOf="@id/anchor1"
                android:layout_marginRight="20dp"
                android:layout_alignBaseline="@id/weightHead"/>


            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textAppearance="?android:attr/textAppearanceMedium"
                android:text="Notes"
                android:id="@+id/notesHead"
                android:layout_below="@id/weightHead"
                android:layout_marginTop="10dp"
                android:layout_alignParentLeft="true"
                android:layout_marginLeft="20dp"/>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Template >"
        android:id="@+id/notesBtn"
        android:layout_alignBaseline="@id/notesHead"
        android:layout_toRightOf="@id/anchor1"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:id="@+id/editNotes"
        android:layout_below="@+id/notesBtn"
        android:layout_marginLeft="20dp"
        android:text="The notes go here"
        android:layout_marginRight="20dp"
        android:layout_alignParentLeft="true" />

    </RelativeLayout>
</ScrollView>

NewsDao.java

public interface Dao<T, ID extends Serializable> extends MongoRepository<T, ID>{


}

AbstractService.java

public interface NewsDao extends Dao<News, Long> {


}

NewsService.java

public abstract class AbstractService<T, ID extends Serializable> implements
        Service<T, ID> {

    protected final Logger logger = LoggerFactory.getLogger(getClass());
    protected Dao<T, ID> dao;

    public AbstractService(Dao<T, ID> dao) {
        this.dao = dao;
    }

    @Override
    public T save(T entity) {
        this.logger.debug("Create a new {} with information: {}", entity.getClass(),
                entity.toString());
        return this.dao.save(entity);
    }

}

Service.java

@Service
public class NewsService extends AbstractService<News, Long> {

    @Autowired
    public NewsService(NewsDao moduleDao) {
        super(moduleDao);
    }

}

NewsController.java

public interface Service<T, ID extends Serializable> {

     T save(T entity);

}

错误：

@RestController
@RequestMapping("/news")
public class NewsController {

    private final NewsService newsService;

    @Autowired
    public NewsController(NewsService newsService) {
        this.newsService = newsService;
    }

    @RequestMapping(method = RequestMethod.GET)
    public void save(){
        newsService.save(new News("elo", "kot", "cos"));
    }
}

我走对了路？

Answer 1

试试这个

Spring数据无法找到您的mongo包存储库告诉spring你的存储库位置

你应该使用

@EnableMongoRepositories(basePackages="com.newssystem.lab.dao")

在SpringBootCofiguration文件中

Answer 2

可能是你需要定义一个bean，指定你正确的impl？

类似的东西：

com.tiemens.secretshare.main.cli

并导入此配置？

Answer 3

最好的方法是：

@NoRepositoryBean
public interface Dao<T, ID extends Serializable> extends MongoRepository<T, ID>{


}

那就是你要做的一切。否则Spring会认为它是一个豆子。

SpringBoot使用MongoDB实现通用DAO

3 个答案: