Java HttpURLConnection OutputStreamWriter为空 [英] Java HttpURLConnection OutputStreamWriter is empty

问题描述

我知道这个问题已经被回答了10,000多次.我已经阅读并测试了一个多小时的建议，没有任何进展.

I know this has been answered 10,000+ times. I have been reading and testing recommendations for over an hour without any progress.

在下面的代码中，请求正文始终为空.

In the code below, the request body is always empty.

URL url = new URL("[REMOVED]");
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestProperty("Authorization", "Bearer [REMOVED]");
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type","application/json");
conn.setDoOutput(true);
conn.setDoInput(true);
OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
writer.write("ABC");
writer.flush();
writer.close();

String line;
BufferedReader reader = new BufferedReader(new 
                             InputStreamReader(conn.getInputStream()));
while ((line = reader.readLine()) != null) {
  System.out.println(line);
}

reader.close();

记录是在服务器上创建的，但正文始终为空.

The record is created on the server, but the body is always null.

感谢您的帮助.

推荐答案

与在localhost上不起作用的完全相同的代码在App Engine上起作用.我不明白为什么，但是上面的代码有效.

The exact same code that does not work on localhost works on app engine. I don't understand why, but the code above works.

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