lambda 判断列表是否已经存在值contains

用户有一个角色用System.out.println(user.getRoles().contains(role));判断都是 false；这个是为什么呢

User user = userService.fetch(id);
		userService.fetchLinks(user,"dept|roles");
		List<Role> roles = roleService.query(Cnd.where("status","=",false).and("del_flag","=",false));
		roles.forEach(role -> {
			if(user.getRoles()!=null && user.getRoles().size()>0){
				System.out.println(user.getRoles().contains(role));
				role.setFlag(user.getRoles().contains(role));
			}
		});
		req.setAttribute("user",user);
		req.setAttribute("roles",roles);

wendal

1楼•1838天前

Role的equsl方法没覆写

wendal

2楼•1838天前

话说，你那堆帖子，解决了就结一下帖呀

Hamming(tonyyule)

3楼•1838天前

哦哦重写解决了

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Role) {
            Role role = (Role) obj;
//            System.out.println("equal"+ role.id);
            return (id.equals(role.id));
        }
        return super.equals(obj);
    }

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