ProtostuffUtil—快速序列化和反序列化对象工具

package cn.btkj.utils;

import java.util.ArrayList;
import java.util.List;
 
import com.dyuproject.protostuff.LinkedBuffer;
import com.dyuproject.protostuff.ProtostuffIOUtil;
import com.dyuproject.protostuff.Schema;
import com.dyuproject.protostuff.runtime.RuntimeSchema;
/*
 项目中http通信离不开对象的序列化和反序列化，以前框架使用的是xml，通用、可读性强，
对于对速度要求不高的系统来说，的确是一种不错的选择。然而最近的一个需求需要使用protobuf，因为其速度比xml快非常多，
而业界说到java的序列化和反序列化，更离不开基于protobuf的protostuff
*/

public class ProtostuffUtil {
    
    public static List serializeProtoStuffObjectList(List list,Class clazz) {
        if(list == null  ||  list.size() <= 0) {
            return null;
        }
 
        long start = System.currentTimeMillis() ;
        List bytes = new ArrayList();
        Schema  schema = RuntimeSchema.getSchema(clazz);
        LinkedBuffer buffer = LinkedBuffer.allocate(4096);
        byte[] protostuff = null;
        for(Object p : list) {
            try {
                protostuff = ProtostuffIOUtil.toByteArray(p, schema, buffer);
                bytes.add(protostuff);
            } finally {
                buffer.clear();
            }
        }
        long end = System.currentTimeMillis() ;
        System.out.println("usetime is"+(end - start));
        return bytes;
    }
    
     public static List  deserializeProtoStuffDataListToObjectList(
                List bytesList,Class clazz) {
            if(bytesList == null || bytesList.size() <= 0) {
                return null;
            }
            long start = System.currentTimeMillis() ;
            Schema  schema = RuntimeSchema.getSchema(clazz);
            List