我编写了一些代码来定期将数据发布到 NodeJs 程序,该程序侦听 POST 并打印数据。然而,有时头球可以通过,有时头球和身体都可以通过。这是发布数据的 Java 代码:
JSONObject dataObject = new JSONObject();
dataObject.put("test", "true");
URLConnection urlConn = thisSubUrl.openConnection();
urlConn.setDoInput (true);
urlConn.setDoOutput(true);
urlConn.setUseCaches (false);
urlConn.setRequestProperty("Content-Type", "application/json");
OutputStreamWriter wr = new OutputStreamWriter(urlConn.getOutputStream());
String dataStr = dataObject.toString();
wr.write(dataStr, 0, dataStr.length());
wr.flush();
wr.close();
BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
in.close();
服务器代码如下所示:
var server= http.createServer(function(req,res){
req.setEncoding('utf8');
console.log(req.headers);
req.on('data', function(chunk) {
console.log("Receive_Event::" + chunk);
});
req.on('end', function() {
console.log('on end');
});
console.log("Bytes received: " + req.socket.bytesRead);
if(req.method=='POST'){
handlePost(req,res);
} else{
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end();
}
}).listen(1338, "127.0.0.1");
标题总是被打印出来。接收到的字节数在长度上有所不同,在标头中的字节数和标头中的字节数 + 正文长度之间。
为什么会这样?