java.lang.IllegalStateException STREAMED

java.lang.IllegalStateException STREAMED

request.getInputStream() 和 request.getReader()不能同时调用，否则会引发java.lang.IllegalStateException异常。

API中有写：

getInputStream

public ServletInputStream getInputStream()
throws java.io.IOException

Retrieves the body of the request as binary data using a ServletInputStream. Either this method or getReader() may be called to read the body, not both.

Returns:

a ServletInputStream object containing the body of the request

Throws:

java.lang.IllegalStateException - if the getReader() method has already been called for this request

java.io.IOException - if an input or output exception occurred