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);