对Java POST调用的HTTP错误请求响应

Question

I'm attempting to query a REST api using POST requests in a java application. I think I've set everything correctly, but I keep getting a Bad Request response.

HttpPost request = new HttpPost(requestURI);
request.addHeader("accept", "application/json");
request.addHeader(HttpHeaders.CONTENT_TYPE, "application/json");
HttpEntity entity = new StringEntity(requestBody + new Integer(PatientId).toString() + "}");
request.setEntity(entity);

The requestBody, accompanied by the number and curly brace, are valid JSON, and the requestURI is copy and pasted straight out of the API documentation, so I know I shouldn't be getting a Bad Request due to those.

Am I missing something in the setup?

Answer 1

The Content-Length header is missing. Some servers don't report the correct 4xx error (411 Length Required) and just issue a generic Bad Request error.

Answer 2

最终是我的URI中未包含的随机斜杠。