我正在尝试将我的android应用程序连接到远程服务器上的数据库。 我创建了一个登录表单，但显示以下错误。
02/11 21:14:24: Launching app
No apk changes detected since last installation, skipping installation of C:\Users\manav\AndroidStudioProjects\MySQLConnect\app\build\outputs\apk\debug\app-debug.apk
$ adb shell am force-stop com.example.mysqlconnect
$ adb shell am start -n "com.example.mysqlconnect/com.example.mysqlconnect.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 31621 on device xiaomi-redmi_note_3-dbdeee7e
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
W/System: ClassLoader referenced unknown path: /data/app/com.example.mysqlconnect-1/lib/arm64
D/AccessibilityManager: current package=com.example.mysqlconnect, accessibility manager mIsFinalEnabled=false, mOptimizeEnabled=false, mIsUiAutomationEnabled=false, mIsInterestedPackage=false
D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
I/Adreno: QUALCOMM build : a7823f5, I59a6815413
Build Date : 09/23/16
OpenGL ES Shader Compiler Version: XE031.07.00.00
Local Branch : mybranch22028469
Remote Branch : quic/LA.BR.1.3.3_rb2.26
Remote Branch : NONE
Reconstruct Branch : NOTHING
I/OpenGLRenderer: Initialized EGL, version 1.4
E/HAL: hw_get_module_by_class: module name gralloc
hw_get_module_by_class: module name gralloc
I/Timeline: Timeline: Activity_launch_request time:71856102
D/OpenGLRenderer: endAllStagingAnimators on 0x559d757b20 (RippleDrawable) with handle 0x559d759ed0
I/DpmTcmClient: RegisterTcmMonitor from: com.android.okhttp.TcmIdleTimerMonitor
D/OpenGLRenderer: endAllStagingAnimators on 0x559d874d50 (RippleDrawable) with handle 0x559d89f8a0
W/System.err: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:328)
at com.android.okhttp.internal.http.SocketConnector.connectTls(SocketConnector.java:103)
at com.android.okhttp.Connection.connect(Connection.java:143)
at com.android.okhttp.Connection.connectAndSetOwner(Connection.java:185)
W/System.err: at com.android.okhttp.OkHttpClient$1.connectAndSetOwner(OkHttpClient.java:128)
at com.android.okhttp.internal.http.HttpEngine.nextConnection(HttpEngine.java:342)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:331)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:249)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:437)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:114)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:245)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getOutputStream(DelegatingHttpsURLConnection.java:218)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:25)
at com.example.mysqlconnect.BackgroundTask.doInBackground(BackgroundTask.java:52)
at com.example.mysqlconnect.BackgroundTask.doInBackground(BackgroundTask.java:23)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
W/System.err: at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:324)
at com.android.org.conscrypt.TrustManagerImpl.checkServerTrusted(TrustManagerImpl.java:225)
at com.android.org.conscrypt.Platform.checkServerTrusted(Platform.java:115)
at com.android.org.conscrypt.OpenSSLSocketImpl.verifyCertificateChain(OpenSSLSocketImpl.java:556)
at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:324)
... 20 more
Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
W/System.err: ... 26 more
V/BoostFramework: BoostFramework() : mPerf = com.qualcomm.qti.Performance@b7340e
V/BoostFramework: BoostFramework() : mPerf = com.qualcomm.qti.Performance@b19e2f
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.mysqlconnect, PID: 31621
android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@965df6d is not valid; is your activity running?
at android.view.ViewRootImpl.setView(ViewRootImpl.java:584)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:313)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:86)
at android.app.Dialog.show(Dialog.java:322)
at com.example.mysqlconnect.BackgroundTask.onPostExecute(BackgroundTask.java:134)
at com.example.mysqlconnect.BackgroundTask.onPostExecute(BackgroundTask.java:23)
at android.os.AsyncTask.finish(AsyncTask.java:651)
at android.os.AsyncTask.access$500(AsyncTask.java:180)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:668)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5604)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:774)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)
I/Process: Sending signal. PID: 31621 SIG: 9
Application terminated.
以下是我的Java文件。
MainActivity.java
package com.example.mysqlconnect;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
public class MainActivity extends Activity {
EditText ET_NAME,ET_PASS;
String login_name,login_pass;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ET_NAME = (EditText)findViewById(R.id.user_name);
ET_PASS = (EditText)findViewById(R.id.user_pass);
}
public void userReg(View view) {
startActivity(new Intent(this,Register.class));
}
public void userLogin(View view) {
login_name = ET_NAME.getText().toString();
login_pass = ET_PASS.getText().toString();
String method = "login";
BackgroundTask backgroundTask = new BackgroundTask(this);
backgroundTask.execute(method,login_name,login_pass);
}
}
BackgroundTask.java
public class BackgroundTask extends AsyncTask<String,Void,String> {
AlertDialog alertDialog;
Context ctx;
BackgroundTask(Context ctx) {
this.ctx =ctx;
}
@Override
protected void onPreExecute() {
alertDialog = new AlertDialog.Builder(ctx).create();
alertDialog.setTitle("Login Information....");
}
@Override
protected String doInBackground(String... params) {
String reg_url = "https://snipy.unaux.com/MySQLDemo/register.php";
String login_url = "https://snipy.unaux.com/MySQLDemo/login.php";
String method = params[0];
if (method.equals("register")) {
String name = params[1];
String user_name = params[2];
String user_pass = params[3];
try {
URL url = new URL(reg_url);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
//httpURLConnection.setDoInput(true);
OutputStream OS = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(OS, "UTF-8"));
String data = URLEncoder.encode("user", "UTF-8") + "=" + URLEncoder.encode(name, "UTF-8") + "&" +
URLEncoder.encode("user_name", "UTF-8") + "=" + URLEncoder.encode(user_name, "UTF-8") + "&" +
URLEncoder.encode("user_pass", "UTF-8") + "=" + URLEncoder.encode(user_pass, "UTF-8");
bufferedWriter.write(data);
bufferedWriter.flush();
bufferedWriter.close();
OS.close();
InputStream IS = httpURLConnection.getInputStream();
IS.close();
//httpURLConnection.connect();
httpURLConnection.disconnect();
String string= new String("Registration Success...");
return string;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} else if(method.equals("login")) {
String login_name = params[1];
String login_pass = params[2];
try {
URL url = new URL(login_url);
HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
OutputStream outputStream = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream,"UTF-8"));
String data = URLEncoder.encode("login_name","UTF-8")+"="+URLEncoder.encode(login_name,"UTF-8")+"&"+
URLEncoder.encode("login_pass","UTF-8")+"="+URLEncoder.encode(login_pass,"UTF-8");
bufferedWriter.write(data);
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));
String response = "";
String line = "";
while ((line = bufferedReader.readLine()) != null) {
response+= line;
}
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return response;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
@Override
protected void onPostExecute(String result) {
if (result =="Registration Success...") {
Toast.makeText(ctx, result, Toast.LENGTH_LONG).show();
} else {
alertDialog.setMessage(result);
alertDialog.show();
}
}
}
Register.java
package com.example.mysqlconnect;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
public class Register extends Activity {
EditText ET_NAME,ET_USER_NAME,ET_USER_PASS;
String name,user_name,user_pass;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.register_layout);
ET_NAME = (EditText)findViewById(R.id.name);
ET_USER_NAME= (EditText)findViewById(R.id.new_user_name);
ET_USER_PASS = (EditText)findViewById(R.id.new_user_pass);
}
public void userReg(View view) {
name = ET_NAME.getText().toString();
user_name = ET_USER_NAME.getText().toString();
user_pass =ET_USER_PASS.getText().toString();
String method = "register";
BackgroundTask backgroundTask = new BackgroundTask(this);
backgroundTask.execute(method,name,user_name,user_pass);
finish();
}
}
请帮忙...我在这里呆了很长时间，如果您能提供有关如何使用MySQL和PHP将android应用程序连接到服务器上的数据库的任何资源，那将是非常值得的。
答案 0 :(得分：0)
该网站的ssl证书不受系统信任。
您可以根据okhttp doc信任您的证书。
或者您也可以将http替换为https来解决此问题。
字符串reg_url =“ http://snipy.unaux.com/MySQLDemo/register.php”;
字符串login_url =“ http://snipy.unaux.com/MySQLDemo/login.php”;
答案 1 :(得分：0)
检查网址是否为http或https，然后将连接从http更改为https：
URL url = new URL(reg_url);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
if (reg_url.startsWith("https://") {
SSLSocketFactory socketFactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
((HttpsURLConnection) httpURLConnection).setSSLSocketFactory(socketFactory);
}
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
对登录执行相同的操作。