package com.cmcc.log;
import ognl.Ognl;
import ognl.OgnlContext;
import ognl.OgnlException;
public class OGNL {
public static void main(String[] args) throws OgnlException{
OgnlContext ognlContext = new OgnlContext();
Object root = ognlContext.getRoot();
Object value = Ognl.getValue("'helloworld'.length()", ognlContext, root); //expression就是方法表达式
System.out.println(value.toString());
value = Ognl.getValue("@java.lang.Math@random()", ognlContext, root); //这里注意获取静态方法表达式是固定表达: @类名@方法名
System.out.println(value.toString());
User user = new User();
user.setName("张三");
ognlContext.setRoot(user);
value = (String) Ognl.getValue("name", ognlContext, ognlContext.getRoot());
System.out.println(value);
ognlContext.put("name","张萨姆");
value = (String) Ognl.getValue("#name", ognlContext, ognlContext.getRoot());
System.out.println(value);
value = (String) Ognl.getValue("name", ognlContext, ognlContext.getRoot());
System.out.println(value);
value = (String) Ognl.getValue("#name", ognlContext, new Object());
System.out.println(value);
value = (String)ognlContext.get("name");
System.out.println(value);
}
}
控制台输出:
10
0.05190743204224668
张三
张萨姆
张三
张萨姆
张萨姆
https://blog.csdn.net/qq_34191426/article/details/101002431