Java AsyncTask HttpsUrlConnection在getOutputStream()上引发IOException
我尝试使用包含json数据(用户名和密码)的POST请求登录web服务器RESTAPI。问题是,当我调用urlConnection.getOutputStream()时,会抛出一个IOException 我尝试在urlConnection.getOutputStream()之前调用urlConnection.setDoOutput(true)和urlConnection.setDoInput(true),但直到出现相同的错误。但当我尝试使用GET方法从google.com这样的网站读取数据时,并没有出现错误 一种可能是使用HttpClient,但此库已被弃用 e、 printStackTrace()不打印任何内容 web服务器的证书是自签名的。 要执行此操作,我使用AsyncTask。 安卓版本4.1.2 Android studio 1.3 RC3 明斯克版本11 targetSdkVersion 23 是因为自签名证书吗? 有人能帮我吗Java AsyncTask HttpsUrlConnection在getOutputStream()上引发IOException,java,android,http,io,httpurlconnection,Java,Android,Http,Io,Httpurlconnection,我尝试使用包含json数据(用户名和密码)的POST请求登录web服务器RESTAPI。问题是,当我调用urlConnection.getOutputStream()时,会抛出一个IOException 我尝试在urlConnection.getOutputStream()之前调用urlConnection.setDoOutput(true)和urlConnection.setDoInput(true),但直到出现相同的错误。但当我尝试使用GET方法从google.com这样的网站读取数据时,并
@Override
protected Void doInBackground(Void... params) {
login();
return null;
}
private KeyStore getKeyStore() {
KeyStore trusted;
try {
trusted = KeyStore.getInstance("BKS");
InputStream in = activity.getBaseContext().getResources().openRawResource(R.raw.cert);
try {
trusted.load(in, "password".toCharArray());
} finally {
in.close();
}
} catch (Exception e) {
throw new AssertionError(e);
}
return trusted;
}
public void login() {
HttpsURLConnection urlConnection = null;
try {
//prepare request
URL url = new URL("https://" + ip + "/api/login");
urlConnection = (HttpsURLConnection) url.openConnection();
TrustManagerFactory tmf = null;
SSLContext context;
try {
tmf = TrustManagerFactory.getInstance("X509");
tmf.init(getKeyStore());
context = SSLContext.getInstance("TLS");
context.init(null, tmf.getTrustManagers(), null);
urlConnection.setSSLSocketFactory(context.getSocketFactory());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
}
urlConnection.setRequestMethod("POST");
urlConnection.addRequestProperty("Content-Type", "application/json");
//write request
urlConnection.setDoOutput(true);
urlConnection.setChunkedStreamingMode(0);
//error at this line
OutputStreamWriter out = new OutputStreamWriter(urlConnection.getOutputStream());
String logginRequest = "{'login' : '" + login + "', 'password' : '" + password + "'}";
out.write(logginRequest.toCharArray());
out.close()
//connect
urlConnection.connect();
//read
BufferedInputStream in = new BufferedInputStream(urlConnection.getInputStream());
printData(in);
in.close();
} catch (MalformedURLException e) {
Log.e("ConcentratorExport", "MalformedURLException");
e.printStackTrace();
} catch (IOException e) {
Log.e("ConcentratorExport", "IOException");
e.printStackTrace();
} finally {
urlConnection.disconnect();
}
}
应用程序权限:
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
我找到了答案。
Log.e(“ConcentratorExport”,e.getMessage())
显示的错误消息是Hostname'160.98.21.182'未验证
之后,我编写了一个类来接受所有主机名,请参阅,并将其设置为默认主机名验证器:
HttpsURLConnection.setDefaultHostnameVerifier(新的IPSHostnameVerrifier())
并且它工作正常
另一个错误是json字符串必须使用“而不是”:
String logginRequest = "{\"login\" : \"" + login + "\", \"password\" : \"" + password + "\"}";
哪个IOException?使用e.getMessage()。更改为Log.e(“集中器导出”,“IOException:+e.getMessage());在每个catch块中放置这样的日志语句。不要在catch之后继续执行代码,而是返回。您可以在中看到我对sslsocketfactory&hostnameverifier的回答