我正在尝试使用HttpUrlConnection从
Android应用程序发出请求到WebService.但有时候它有效,有时它不起作用.
当我尝试发送此值：
JSON值
{"Calle":"Calle Pérez 105","DetalleDireccion":"","HoraPartida":"May 18,2014 9:17:10 AM","Numero":0,"PuntoPartidaLat":18.477295994621315,"PuntoPartidaLon":-69.93638522922993,"Sector":"Main Sector"}
我在DataOutputStream关闭函数中有一个“意外的流结束”异常.
这是我的代码：
DataOutputStream printout;
// String json;
byte[] bytes;
DataInputStream input;
URL serverUrl = null;
try {
serverUrl = new URL(Config.APP_SERVER_URL + URL);
} catch (MalformedURLException e) {
...
}
bytes = json.getBytes();
try {
httpCon = (HttpURLConnection) serverUrl.openConnection();
httpCon.setDoOutput(true);
httpCon.setUseCaches(false);
httpCon.setFixedLengthStreamingMode(bytes.length);
httpCon.setRequestProperty("Authorization",tokenType + " "+ accessToken);
httpCon.setRequestMethod("POST");
httpCon.setRequestProperty("Content-Type","application/json");
printout = new DataOutputStream(httpCon.getOutputStream());
printout.writeBytes(json);
printout.flush();
printout.close();
...
}
解决方法
以下是以下更改的解决方案：
它摆脱了DataOutputStream,这当然是错误的使用.
>它正确设置和传递内容长度.
>它不依赖于关于编码的任何默认值,而是在两个位置显式设置UTF-8.
尝试一下：
// String json;
URL serverUrl = null;
try {
serverUrl = new URL(Config.APP_SERVER_URL + URL);
} catch (MalformedURLException e) {
...
}
try {
byte[] bytes = json.getBytes("UTF-8");
httpCon = (HttpURLConnection) serverUrl.openConnection();
httpCon.setDoOutput(true);
httpCon.setUseCaches(false);
httpCon.setFixedLengthStreamingMode(bytes.length);
httpCon.setRequestProperty("Authorization","application/json; charset=UTF-8");
OutputStream os = httpCon.getOutputStream();
os.write(bytes);
os.close();
...
}
