/*
|
* Copyright (c) 2018-2028, DreamLu All rights reserved.
|
*
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions are met:
|
*
|
* Redistributions of source code must retain the above copyright notice,
|
* this list of conditions and the following disclaimer.
|
* Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* Neither the name of the dreamlu.net developer nor the names of its
|
* contributors may be used to endorse or promote products derived from
|
* this software without specific prior written permission.
|
* Author: DreamLu 卢春梦 (596392912@qq.com)
|
*/
|
package org.springblade.core.tool.utils;
|
|
import io.protostuff.LinkedBuffer;
|
import io.protostuff.ProtostuffIOUtil;
|
import io.protostuff.Schema;
|
import io.protostuff.runtime.RuntimeSchema;
|
|
import java.util.Map;
|
import java.util.Objects;
|
import java.util.concurrent.ConcurrentHashMap;
|
|
/**
|
* Protostuff 工具类
|
*
|
* @author L.cm
|
*/
|
public class ProtostuffUtil {
|
|
/**
|
* 避免每次序列化都重新申请Buffer空间
|
*/
|
private static final LinkedBuffer BUFFER = LinkedBuffer.allocate(LinkedBuffer.DEFAULT_BUFFER_SIZE);
|
/**
|
* 缓存Schema
|
*/
|
private static final Map<Class<?>, Schema<?>> SCHEMA_CACHE = new ConcurrentHashMap<>();
|
|
/**
|
* 序列化方法,把指定对象序列化成字节数组
|
*
|
* @param obj obj
|
* @param <T> T
|
* @return byte[]
|
*/
|
@SuppressWarnings("unchecked")
|
public static <T> byte[] serialize(T obj) {
|
Class<T> clazz = (Class<T>) obj.getClass();
|
Schema<T> schema = getSchema(clazz);
|
byte[] data;
|
try {
|
data = ProtostuffIOUtil.toByteArray(obj, schema, BUFFER);
|
} finally {
|
BUFFER.clear();
|
}
|
return data;
|
}
|
|
/**
|
* 反序列化方法,将字节数组反序列化成指定Class类型
|
*
|
* @param data data
|
* @param clazz clazz
|
* @param <T> T
|
* @return T
|
*/
|
public static <T> T deserialize(byte[] data, Class<T> clazz) {
|
Schema<T> schema = getSchema(clazz);
|
T obj = schema.newMessage();
|
ProtostuffIOUtil.mergeFrom(data, obj, schema);
|
return obj;
|
}
|
|
/**
|
* 获取Schema
|
* @param clazz clazz
|
* @param <T> T
|
* @return T
|
*/
|
@SuppressWarnings("unchecked")
|
private static <T> Schema<T> getSchema(Class<T> clazz) {
|
Schema<T> schema = (Schema<T>) SCHEMA_CACHE.get(clazz);
|
if (Objects.isNull(schema)) {
|
//这个schema通过RuntimeSchema进行懒创建并缓存
|
//所以可以一直调用RuntimeSchema.getSchema(),这个方法是线程安全的
|
schema = RuntimeSchema.getSchema(clazz);
|
if (Objects.nonNull(schema)) {
|
SCHEMA_CACHE.put(clazz, schema);
|
}
|
}
|
return schema;
|
}
|
|
}
|