package com.spring.test.di;

public interface Logic {

public String getName();
}

package com.spring.test.di;

public class LogicImpl implements Logic{

public String getName(){

  return "fengyun";

}
}

package com.spring.test.di;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.FileSystemXmlApplicationContext;

public class TestMain {

/**

 * @param args

 */

public static void main(String[] args) {



  // 得到ApplicationContext对象

  ApplicationContext ctx = new FileSystemXmlApplicationContext(

     "applicationContext.xml");

  // 得到Bean

  LoginAction loginAction = (LoginAction) ctx.getBean("loginAction");



  loginAction.execute();

}
}

package com.spring.test.di;

public class LoginAction {

private Logic logic;



public void execute() {

  String name = logic.getName();

  System.out.print("My Name Is " + name); 

}



/**

 * @return the logic

 */

public Logic getLogic() {

  return logic;

}



/**

 * @param logic

 *      the logic to set

 */

public void setLogic(Logic logic) {

  this.logic = logic;

}
}

package com.spring.test.di;

public class LoginAction {

private Logic logic;



public LoginAction(Logic logic) {

  this.logic = logic;

}



public void execute() {

  String name = logic.getName();

  System.out.print("My Name Is " + name);

}
}

package com.spring.test.di;

public class LoginAction {

private Logic logic;



public void execute() {

  try {

    Object obj = Class.forName("com.spring.test.di.LogicImpl")

       .newInstance();

    logic = (Logic) obj;

    String name = logic.getName();

    System.out.print("My Name Is " + name);

  } catch (Exception e) {

    e.printStackTrace();

  }

}
}