将字符串转换为可执行的java代码

2019独角兽企业重金招聘Python工程师标准>>>

public static Object convertToCode(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);   

    }

调用方法：

map.put(a,100)

convertToCode("a<100",map)

sout()----false

转载于:https://my.oschina.net/u/3643058/blog/3025632