自動裝配不工作@Repository

Question

我想創建一個簡單的REST服務，在數據庫中存儲數據。這是一個從REST控制器到MVC控制器的示例架構，MVC控制器實例化一個實體並嘗試通過自動裝配的存儲庫將其存儲在數據庫中。 正確調用REST服務並回復它的內容;但是，存儲實體失敗並且自動裝載的存儲庫爲空。 有人可以幫忙嗎？

我的REST服務：

@RestController 
@RequestMapping("/coord") 
public class CoordService { 

    @RequestMapping(value = "/{name}", method = RequestMethod.GET) 
    public String getMuseo(@PathVariable String name) { 
     String result = "Hello " + name + ", I am saving on the db."; 
     new CoordController().saveCoord(); 

     return result; 
    } 
} 

我的應用程序的業務邏輯（MVC中的控制器）：

@Component 
public class CoordController { 
    @Autowired 
    private CoordRepository coordRepository; 

    public void saveCoord() { 
     System.out.println("Ok controller"); 

     Coord cg = new Coord(); 
     System.out.println("Ok new"); 
     cg.setCoord("xyz"); 
     cg.setId(1L); 

     if (coordRepository == null) { 
      System.out.println("REP NULL!"); 
     } else 
      coordRepository.save(cg); 

     System.out.println("Ok save()"); 
    } 
} 

我的實體：

@Entity 
@Configurable 
public class Coord extends IdentifiableEntity { 

    @NotNull 
    private String coord; 

    public String getCoord() { 
     return this.coord; 
    } 

    public void setCoord(String coord) { 
     this.coord = coord; 
    } 
} 

我的倉庫：

@Repository 
public interface CoordRepository extends 
    JpaSpecificationExecutor<Coord>, 
    JpaRepository<Coord, Long> { 
} 

我的applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?> 

<beans xmlns="http://www.springframework.org/schema/beans" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" 
xmlns:beans="http://www.springframework.org/schema/beans" xmlns:tx="http://www.springframework.org/schema/tx" 
xmlns:jpa="http://www.springframework.org/schema/data/jpa" 
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd"> 

    <context:property-placeholder location="classpath*:spring/*.properties" /> 
    <context:component-scan base-package="com.lh.clte" /> 


    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" 
    destroy-method="close"> 
     <property name="driverClassName" value="${database.driverClassName}" /> 
     <property name="url" value="${database.url}" /> 
     <property name="username" value="${database.username}" /> 
     <property name="password" value="${database.password}" /> 
     <property name="initialSize" value="3" /> 
     <property name="maxActive" value="10" /> 
    </bean> 

    <tx:annotation-driven mode="proxy" 
    transaction-manager="transactionManager" /> 
    <bean class="org.springframework.orm.jpa.JpaTransactionManager" 
    id="transactionManager"> 
     <property name="entityManagerFactory" ref="entityManagerFactory" /> 
    </bean> 

    <bean 
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" 
    id="entityManagerFactory"> 
     <property name="persistenceUnitName" value="persistenceUnit" /> 
     <property name="dataSource" ref="dataSource" /> 
    </bean> 

    <jpa:repositories base-package="com.lh.clte.repository" /> 
</beans> 

我的persistence.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?> 
<persistence xmlns="http://java.sun.com/xml/ns/persistence" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" 
version="2.0"> 
    <persistence-unit name="persistenceUnit" 
    transaction-type="RESOURCE_LOCAL"> 
     <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> 
     <properties> 
      <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" /> 
      <property name="hibernate.hbm2ddl.auto" value="update" /> 
      <property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.ImprovedNamingStrategy" /> 
      <property name="hibernate.connection.charSet" value="UTF-8" /> 
     </properties> 
    </persistence-unit> 
</persistence> 

Answer 1

你的問題是在這裏

new CoordController().saveCoord(); 

您需要將CoordController自動裝入您的CoordService。通過使用新的CoordController（），您將創建一個CoordController實例，該實例不是由Spring管理的，因此其字段不是自動裝配的。

@RestController 
@RequestMapping("/coord") 
public class CoordService { 

    @Autowired 
    private CoordController coordController; 

    @RequestMapping(value = "/{name}", method = RequestMethod.GET) 
    public String getMuseo(@PathVariable String name) { 
     String result = "Hello " + name + ", I am saving on the db."; 
     coordController.saveCoord(); 

     return result; 
    } 
} 

順便說一句，你CoordService類應該因爲它的控制器（它有@RestController註解！），你的CoordController應該CoordService，因爲它包含業務邏輯被命名CoordController。