android webview 对url 有什么限制吗？

Question

大多数url都是会在webview 内部跳转，而有的不行，会引导到外部浏览器。如下url：
http://dev.l5zx.com/user/dentalh5/dist/views/articleDetailsReply/articleDetailsReply.html?contentId=1&commentId=12&userId=5390&replyUserId=0&replyType=2&userName=frank&content=comment%2520test9&commentData={%22id%22:12,%22name%22:%22frank%22,%22isUserLike%22:false,%22time%22:%222018-03-27%2015:25:49%22,%22replyNo%22:5,%22cool%22:28,%22content%22:%22comment%20test9%22,%22UserId%22:5390,%22replyUserId%22:0,%22index%22:0,%22commentUrl%22:%22http:%2f%2fdev.l5zx.com%2fuser%2fdentalh5%2fdist%2fstatic%2fimg%2fgraycool.ng%22,%22headpic%22:%22http:%2f%2fdev.l5zx.com%2fuser%2fdentalh5%2fdist%2fstatic%2fimg%2ficon-man.png%22}"
是长度？还是url不合法？怎样才算合法的url？

Answer 1

追加问题，哪里判断的url合法性？ 哪里是跳转系统外部浏览器？