java序列化和反序列化

package cn.yicha.ask.AskBaidu;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.util.HashMap;

import java.util.concurrent.ConcurrentLinkedQueue;

import org.apache.log4j.Logger;

public class AskBaidu_Inti {

private static final Logger log = Logger.getLogger(AskBaidu_Inti.class.getName());

public static HashMap askmap = new HashMap();

public static File cachefile =null;

public static void askinit( )

{

cachefile = getCacheFile();

log.info(cachefile.getAbsoluteFile()+"存放序列化文件的路径");

if(!initQueue()){

askmap = new HashMap();

log.info("Build mobileBindCheckCodesQueue");

}

}

//构建存放文件的路径

private static File getCacheFile() {

String classpath = System.getProperty("java.io.tmpdir");

String separator = System.getProperty("file.separator");

return new File(classpath+separator+"QueueFile.dat");

}

//反序列化方法

public static boolean initQueue(){

ObjectInputStream in;

try {

in = new ObjectInputStream(new FileInputStream(cachefile));

askmap = (HashMap) in.readObject();

if(askmap != null){

log.info("Init mobileBindCheckCodesQueue from cache File :"+cachefile);

return true;

}

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} catch (ClassNotFoundException e) {

e.printStackTrace();

}

return false;

}

//序列化方法

public static void saveQueue(){

ObjectOutputStream out;

try {

out = new ObjectOutputStream(new FileOutputStream(cachefile));

out.writeObject(askmap);

out.flush();

out.close();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

log.info("Save mobileBindCheckCodesQueue to cachefile:"+cachefile);

}

    public static void main(String[] args)

    {

     AskBaidu_Inti ai = new AskBaidu_Inti();

     ai.askinit();

    }

}