Common-pool源码编译——小例子

package mh.test;

public class UserInfo {

private String name;
private int age;

public UserInfo() {
// TODO Auto-generated constructor stub
}
public UserInfo(String name, int age) {
// TODO Auto-generated constructor stub
this.name = name;
this.age = age;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}

@Override
public String toString() {
// TODO Auto-generated method stub
return "用户名："+this.name+",年龄："+this.age;
}
}

package mh.test;

import org.apache.commons.pool2.PooledObject;
import org.apache.commons.pool2.PooledObjectFactory;
import org.apache.commons.pool2.impl.DefaultPooledObject;

public class UserFactory implements PooledObjectFactory<UserInfo>{

@Override
public PooledObject<UserInfo> makeObject() throws Exception {
// TODO Auto-generated method stub
System.out.println("创建一个新的对象");
return new DefaultPooledObject<UserInfo>(new UserInfo());
}

@Override
public void destroyObject(PooledObject<UserInfo> p) throws Exception {
// TODO Auto-generated method stub

UserInfo user = p.getObject();
System.out.println("销毁对象"+user.toString());
user = null;
}

@Override
public boolean validateObject(PooledObject<UserInfo> p) {
// TODO Auto-generated method stub
if(p.getObject() instanceof UserInfo){
System.out.println("是一个合法的对象");
return true;
}
System.out.println("是一个非法的对象");
return false;
}

@Override
public void activateObject(PooledObject<UserInfo> p) throws Exception {
// TODO Auto-generated method stub
System.out.println("重新初始化对象");
}

@Override
public void passivateObject(PooledObject<UserInfo> p) throws Exception {
// TODO Auto-generated method stub
UserInfo user = p.getObject();
System.out.println("对象已经被归还:"+user.toString());
}

}

package mh.test;

import org.apache.commons.pool2.impl.GenericObjectPool;

public class TestPool {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub

GenericObjectPool<UserInfo> pool = new GenericObjectPool<UserInfo>(new UserFactory());
try {
UserInfo user = pool.borrowObject();
user.setAge(10);
user.setName("mh");
System.out.println(user.toString());
pool.returnObject(user);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

}