Question

我是Spring的新手。我试图使用@Autowired注释将数据源实例注入我的DAOImpl类。但是数据源始终为空。

我的主要课程：

package com.cts.main;

import org.springframework.beans.factory.xml.XmlBeanFactory;
import com.cts.status.bizImpl.AddTableDetailsBizImpl;
import com.cts.status.dao.JDBCEmployeeDetailsDAO;

public class Main {

public static void main(String[] args) {    

    XmlBeanFactory factory = AddTableDetailsBizImpl.getApplicationContext();
    JDBCEmployeeDetailsDAO dao = (JDBCEmployeeDetailsDAO)     factory.getBean("JDBCEmployeeDetailsDAO");
    dao.insertEmployeeDetails(null); 

}

}

我实现接口的DAOImpl类如下：

package com.cts.status.dao;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;

import com.cts.status.bean.EmployeeDetails;

public class JDBCEmployeeDetailsDAOImpl implements JDBCEmployeeDetailsDAO{

private DataSource dataSource;
private JdbcTemplate jdbctemplate;


public DataSource getDataSource() {
    return dataSource;
}

@Autowired
public void setDataSource(DataSource dataSource) {
    this.dataSource = dataSource;
    this.jdbctemplate = new JdbcTemplate(dataSource);
}



@Override
public void insertEmployeeDetails(EmployeeDetails employeeDetails) {    
    System.out.println("HIIIIII");

}

@Override
public EmployeeDetails retrieveEmployeeDetails(int employeeId) {
    System.out.println("HIIIIII");
    return null;
}

My Spring Config XML文件如下：

<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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd">

<context:annotation-config />

<context:component-scan base-package="com.cts.status.dao"/>

<bean id="JDBCEmployeeDetailsDAO"    class="com.cts.status.dao.JDBCEmployeeDetailsDAOImpl">     

</bean>

<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">

    <property name="driverClassName" value="org.apache.derby.jdbc.ClientDriver" />
    <property name="url" value="jdbc:derby://localhost:1527/StatusGen" />
    <property name="username" value="app" />
    <property name="password" value="app" />
</bean>
</beans>

当我运行Main类时，我能够创建JDBCEmployeeDetailsDAO类型的实例，但数据源值为null。

我不确定我错过了什么。请帮助。

由于维杰

@Autowired in Spring不按预期工作。数据源是空的

0 个答案: