异常:getInputStream() has already been called for this request

异常:getInputStream() has already been called for this request...

造成异常的代码: 从请求中获取body参数

 BufferedReader reader = request.getReader();while ((str = reader.readLine()) != null) {requestJson += str;}reader.close();

原因: 1.重复调用 2.request.getReader获取不到值

解决办法:在获取body 参数的同时,先判断下请求数据流的长度,就完美解决啦

 int len = request.getContentLength();if (len != -1) {BufferedReader reader = request.getReader();while ((str = reader.readLine()) != null) {requestJson += str;}reader.close();}

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异常:getInputStream() has already been called for this request

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