java动态表达式、原生调用、反射性能对比

package net.hs.cw.bomp.utils;

import java.io.Serializable;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;

import org.mvel2.MVEL;

/**
 * Id 模型
 * 
 * @author Gavin Hu
 * @create 2015/8/26
 */
public class Id implements Serializable {

    private Long id;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public static Long get(Id id) {
        return id == null ? null : id.getId();
    }

    public static void main(String[] args) {
        Id id = new Id();
        long beg = System.currentTimeMillis();
        for (long i=0;i<100000;i++) {
            id.setId(i);
        }
        System.out.println(System.currentTimeMillis() - beg);
        
        Map<String, Object> paramMap = new HashMap<>();
        String expression = "id.setId(1L);";
        paramMap.put("id", id);
        beg = System.currentTimeMillis();
        Serializable compiled =MVEL.compileExpression(expression);
        for (long i=0;i<100000;i++) {
            MVEL.eval(expression, paramMap);  // 非编译模式
//            MVEL.executeExpression(compiled,paramMap); // 编译模式
        }
        System.out.println(System.currentTimeMillis() - beg);
        beg = System.currentTimeMillis();
        try {
            Field field = Id.class.getDeclaredField("id");
            for (long i=0;i<100000;i++) {
                field.set(id, i);
            }
            System.out.println(System.currentTimeMillis() - beg);
        } catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
    }
}