type parameters of <T>T cannot be determined; no unique maximal instance exists for type variable T with upper bounds int,java.lang.Object

type parameters of <T>T cannot be determined; 
  no unique maximal instance exists for type variable T with 
  upper bounds int,java.lang.Object
错误解决方法，
经过查询 必应，

是因为使用类似下面的代码，maven编译不通过
public T getObject() {
        return get(OBJECT);
}
，改为

public T getObject() {
        return (T)get(OBJECT); 
}

即可