java序列化和反序列化

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java序列化和反序列化

这里展示JDK自带序列化和第三方FST快速序列化.需要打包
fst-2.45.jar
资源请自行下载
需要用到博主的JdkUtils和IOUtils

package com.demo.utils;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import org.nustaq.serialization.FSTObjectInput;
import org.nustaq.serialization.FSTObjectOutput;

/**
* 序列化工具类.jdk自带和fst极速序列化
* @author 353654
*
*/
public class SerializeUtils {

/** * 暴露序列化API * @param obj * @return */public static byte[] serialize(Object obj) {    return JdkUtils.IS_AT_LEAST_JAVA_7 ? fstserialize(obj) : jdkserialize(obj);}/** * 暴露反序列化API * @param bytes * @return */public static Object deserialize(byte[] bytes) {    return JdkUtils.IS_AT_LEAST_JAVA_7 ? fstdeserialize(bytes) : jdkdeserialize(bytes);}/** * fst将对象序列化成二进制数组 * @param obj * @return */public static byte[] fstserialize(Object obj) {    ByteArrayOutputStream out = null;    FSTObjectOutput fout = null;    try {        out = new ByteArrayOutputStream(1024 * 16);        fout = new FSTObjectOutput(out);        fout.writeObject(obj);        fout.flush();        return out.toByteArray();    } catch (IOException e) {        throw new RuntimeException(e);    } finally {        if (fout != null) {            try {                fout.close();            } catch (IOException e) {            }        }    }}/** * fst反序列化二进制数组成对象 * @param bytes * @return */@SuppressWarnings("unchecked")public static <T> T fstdeserialize(byte[] bytes) {    if (bytes == null) {        return null;    }    FSTObjectInput in = null;    try {        in = new FSTObjectInput(new ByteArrayInputStream(bytes));        return (T) in.readObject();    } catch (Exception e) {        throw new RuntimeException(e);    } finally {        if (in != null) {            try {                in.close();            } catch (IOException e) {            }        }    }}/** * jdk序列化 * @param obj * @return */public static byte[] jdkserialize(Object obj) {    ObjectOutputStream oos = null;    ByteArrayOutputStream baos = null;    try {        baos = new ByteArrayOutputStream();        oos = new ObjectOutputStream(baos);        oos.writeObject(obj);        return baos.toByteArray();    } catch (IOException e) {        throw new RuntimeException(e);    } finally {        IOUtils.close(oos);        IOUtils.close(baos);    }}/** * jdk反序列化 * @param bits * @return */public static Object jdkdeserialize(byte[] bits) {    ObjectInputStream ois = null;    ByteArrayInputStream bais = null;    try {        bais = new ByteArrayInputStream(bits);        ois = new ObjectInputStream(bais);        return ois.readObject();    } catch (Exception e) {        throw new RuntimeException(e);    } finally {        IOUtils.close(ois);        IOUtils.close(bais);    }}

}

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