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 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 map=new HashMap(); map.put("testService",testService); map.put("person",person); String expression="testService.save(person)"; DyMethodUtil.invokeMethod(expression,map);