cocos2dx3.16 JS调用JAVA代码的BUG

首先是2个关键代码
java的:
public static int sum(int a){
return a + 2;
}

js的
var result = jsb.reflection.callStaticMethod(“org/cocos2dx/javascript/JStest”, “sum”, “(I)I”, 6);
cc.log(result);

然后是log
10-20 10:51:56.591 2652-2780/org.cocos2dx.cocos316 W/dalvikvm: dvmFindClassByName rejecting ‘org/cocos2dx/javascript/JStest’
10-20 10:51:56.591 2652-2780/org.cocos2dx.cocos316 D/cocos2d-x debug info: 8

可以看到JAVA代码中的函数是成功调用了的,说明路径是对的.可是为什么之前会提示说找不到这个类呢?