While i am trying to develop webapi with spring dao,aop .i am unable to wire dependencies.below is my code ,kindly somebody help me to resolve this.

Project folder structure :-

[![enter image description here](https://i.stack.imgur.com/59wNr.png)](https://i.stack.imgur.com/59wNr.png)

EmployeeDAOImpl.java :-

```
 package com.emp.dao;

 @Repository
 public class EmployeeDAOImpl implements EmployeeDAO {

@Autowired
@Qualifier(value = "datasource")
private DataSource dataSource;

public void setDataSource(DataSource dataSource) {
    this.dataSource = dataSource;
}

@Override
public int save(Employee emp) throws Exception {
    // TODO Auto-generated method stub
    return 0;
}

@Override
public boolean update(Employee emp) throws Exception {
    // TODO Auto-generated method stub
    return false;
}

@Override
public boolean delete(Employee emp) throws Exception {
    // TODO Auto-generated method stub
    return false;
}

@Override
public Employee findById(int id) throws Exception {
    // TODO Auto-generated method stub
    return null;
}

@Override
public List<Employee> findAll() throws Exception {
    // TODO Auto-generated method stub
    return null;
}

}

```

EmployeeBOImpl :-

```
package com.emp.business;

@Service
public class EmployeeBOImpl implements EmployeeBO{

@Autowired
EmployeeDAOImpl employeeImpl;

public void setEmployeeImpl(EmployeeDAOImpl employeeImpl) {
    this.employeeImpl = employeeImpl;
}

@Override
public int save(Employee emp) throws Exception {
    // TODO Auto-generated method stub
    return 0;
}

@Override
public boolean update(Employee emp) throws Exception {
    // TODO Auto-generated method stub
    return false;
}

@Override
public boolean delete(Employee emp) throws Exception {
    // TODO Auto-generated method stub
    return false;
}

@Override
public Employee findById(int id) throws Exception {
    // TODO Auto-generated method stub
    return null;
}

@Override
public List<Employee> findAll() throws Exception {
    // TODO Auto-generated method stub
    return null;
}

}

```

EmployeeController :-

```
package com.emp.controller;
@Controller
public class EmployeeController{

@Autowired
private EmployeeBOImpl employeeBO;

public void setEmployeeBO(EmployeeBOImpl employeeBO) {
    this.employeeBO = employeeBO;
}
}

```

config.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"
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:component-scan base-package="com.emp.controller" />
<context:component-scan base-package="com.emp.business" />
<context:component-scan base-package="com.emp.aop" />
<context:component-scan base-package="com.emp.dao" />
<context:annotation-config />
<bean id="datasource"    class="org.springframework.jdbc.datasource.DriverManagerDataSource"    autowire-candidate="true">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/student"    />
    <property name="username" value="root" />
    <property name="password" value="password" />
    <!-- <property name="maxTotal" value="20" />
    <property name="maxIdle" value="5" /> -->
    <!-- <property name="maxWaitMillis" value="5000" /> -->
</bean>
<!-- <bean id="empController"     class="com.emp.controller.EmployeeController">

</bean> -->
</beans>

```

EmployeeTest.java :-

```
package com.emp.test;

public class EmployeeTest {

public static void main(String args[]){
    ConfigurableApplicationContext cap = new    ClassPathXmlApplicationContext("resources/config.xml");

}
 }

```

Exception :-

```
WARNING: Exception encountered during context initialization -      cancelling refresh attempt: 

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'employeeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.emp.business.EmployeeBOImpl com.emp.controller.EmployeeController.employeeBO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'employeeBOImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.emp.dao.EmployeeDAOImpl com.emp.business.EmployeeBOImpl.employeeImpl; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'employeeDAOImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource com.emp.dao.EmployeeDAOImpl.dataSource; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'datasource' defined in class path resource [resources/config.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'driverClassName' threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [com.mysql.jdbc.Driver]

```