从Java服务器(jetty)发送POST请求

从Java服务器(jetty)发送POST请求,java,post,jetty,httpurlconnection,Java,Post,Jetty,Httpurlconnection,我正在尝试从Java服务器(Jetty)向另一台服务器发送POST请求https://example.com/api/test带有参数用户ID,令牌和状态 在Java中,我调用以下方法: sendNotification("https://example.com/api/test", "test1", "test", 200) 我在日志上看到它成功打印了: Sent request to https://example.com/api/test with userId test1 and to

我正在尝试从Java服务器(Jetty)向另一台服务器发送POST请求
https://example.com/api/test
带有参数
用户ID
令牌
状态

在Java中,我调用以下方法:

sendNotification("https://example.com/api/test", "test1", "test", 200)
我在日志上看到它成功打印了:

Sent request to https://example.com/api/test with userId test1 and token test
但是,在
https://example.com/api/test
日志我根本没有收到任何请求

但是,当我尝试下面的命令时,我确实完美地收到了请求:

curl -H "Content-Type: application/json" -X POST -d '{"userId": "helloo@apptium.com", "token": "asdfasdf", "status": 200}' https://example.com/api/test
怎么了

Java方法:

private void sendNotification(String endpoint, String userId, 
                              String token, int status) throws IOException {
        URL url = new URL(endpoint);
        URLConnection con = url.openConnection();
        HttpURLConnection http = (HttpURLConnection)con;
        http.setRequestMethod("POST");
        http.setDoOutput(true);

        byte[] out = ("{\"userId\":\"" + userId + "\",\"token\":\"" + token + "\",\"status\":" + status + "}").getBytes(StandardCharsets.UTF_8);
        int length = out.length;

        http.setFixedLengthStreamingMode(length);
        http.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
        http.connect();
        try {
            log.warn("Sent request to " + endpoint + " with userId " + userId + " and token " + token);
            OutputStream os = http.getOutputStream();
            os.write(out);
        }
        catch(IOException e) {
            log.error(APImessages.ERROR_500);
        }
    }

必须调用“os.close()”才能完成将请求正文发送到远程服务器的过程

是否在写入操作后关闭outputStream?