disallowed for cross-origin requests that require preflight错误

详细错误：XMLHttpRequest cannot load http://v0.api.upyun.com/smz01. The request was redirected to 'http://v0.api.upyun.com/smz01', which is disallowed for cross-origin requests that require preflight.

在360里用chrome内核上传没有这个问题。在IE中也没有这个问题。怎么解决呢？