Java实现字符串转换成可执行代码的方法

import java.util.map;

import org.apache.commons.jexl2.expression;

import org.apache.commons.jexl2.jexlcontext;

import org.apache.commons.jexl2.jexlengine;

import org.apache.commons.jexl2.mapcontext;

/**

  * 动态加载方法

  *

  */

public class dymethodutil {

  public static object invokemethod(string jexlexp,map<string,object> map){

   jexlengine jexl= new jexlengine();

   expression e = jexl.createexpression(jexlexp);

   jexlcontext jc = new mapcontext();

   for (string key:map.keyset()){

    jc.set(key, map.get(key));

   }

   if ( null ==e.evaluate(jc)){

    return "" ;

   }

   return e.evaluate(jc);

  }

}

map<string,object> map= new hashmap<string,object>();

map.put( "testservice" ,testservice);

map.put( "person" ,person);

string expression= "testservice.save(person)" ;

dymethodutil.invokemethod(expression,map);