Java HttpURLConnection和Apache HttpClient成功的cur

Question

我正在使用Github的API更新存储库中的文件。follwing命令在curl（替换令牌字段）中起作用：

curl -i -X PUT -H 'Authorization: token 2****************0' -d '{"path": "test6.txt", "message": "test", "sha":"863ba79d293acda68556bbddc1f97a29cb7b98bf","content": "dGVzdDM0Cg==", "

branch": "master"}' https://api.github.com/repos/pedro-roberto/test2/contents/test6.txt

sha从此处更新并获取https://api.github.com/repos/pedro-roberto/test2/contents/test6.txt 。content参数是我要用于更新的文件的base64编码（在命令行中base64 file.txt，在Java中byte[] encodedBytes = Base64.encodeBase64(JsonArray_TO_UPLOAD.toString().getBytes()); String jsonInBase64 = new String(encodedBytes);）

我试图用Java发出此请求，但失败，并显示响应代码 400:Bad request

尝试1

Map<String, String> parameters = new HashMap<>();

parameters.put("path", "test6.txt" );

parameters.put("message","test");

parameters.put("sha", "863ba79d293acda68556bbddc1f97a29cb7b98bf" );

parameters.put("content", "dGVzdDM0Cg==");

 parameters.put("branch", "master");

URL url = new URL(https://api.github.com/repos/pedro-roberto/test2/contents/test6.txt);

HttpURLConnection con = (HttpURLConnection) url.openConnection();

con.setRequestMethod("PUT");

con.setRequestProperty("Authorization","token 2********************0");

con.setDoOutput(true);

 DataOutputStream out = new DataOutputStream(con.getOutputStream());

out.writeBytes(ParameterStringBuilder.getParamsString(parameters));

out.flush();

out.close();