以下原因会造成Json校验失败
让你不容易查明真相的错误原因：
1，Json字符串里的非数字类型键值没有带双引号
2，Json中存在\t这样的制表符,看起来和空格一样,但是就是因为它的存在，导致校验不通过，去掉就可以了。
3，编辑器有Bom头也会造成Json校验失败
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