1、尝试解决。将header的content-type参数的值改为multipart/form-data。

接着就报了

the request was rejected because no multipart boundary was found

2、网上的方法都试遍了，发现还是无法找到解决方法。

最后的解决办法：

将GET请求方法，改为POST就可以了。

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