对于java.lang.RuntimeException：javax.mail.MessagingException：[EOF]感兴趣的读者，本文将提供您所需要的所有信息，我们将详细讲解原因：java
对于java.lang.RuntimeException：javax.mail.MessagingException：[EOF]感兴趣的读者，本文将提供您所需要的所有信息，我们将详细讲解原因：javax.mail.MessagingException：[EOF]，并且为您提供关于Android FATAL EXCEPTION MAIN：java.lang.RuntimeException：无法启动活动ComponentInfo、android – java.lang.RuntimeException：无法实例化活动ComponentInfo / java.lang.ClassNotFoundException、android – java.lang.RuntimeException：无法实例化活动ComponentInfo … java.lang.ClassNotFoundException、Android-Studio-2.3错误：java.util.concurrent.ExecutionException：java.lang.RuntimeException：AAPT进程尚未准备好接收命令的宝贵知识。
本文目录一览：- java.lang.RuntimeException：javax.mail.MessagingException：[EOF]（原因：javax.mail.MessagingException：[EOF]）
- Android FATAL EXCEPTION MAIN：java.lang.RuntimeException：无法启动活动ComponentInfo
- android – java.lang.RuntimeException：无法实例化活动ComponentInfo / java.lang.ClassNotFoundException
- android – java.lang.RuntimeException：无法实例化活动ComponentInfo … java.lang.ClassNotFoundException
- Android-Studio-2.3错误：java.util.concurrent.ExecutionException：java.lang.RuntimeException：AAPT进程尚未准备好接收命令
![java.lang.RuntimeException：javax.mail.MessagingException：[EOF]（原因：javax.mail.MessagingException：[EOF]）](http://www.gvkun.com/zb_users/upload/2025/03/7000cd71-6336-4293-83ae-57760390f30c1742190958772.jpg "java.lang.RuntimeException：javax.mail.MessagingException：[EOF]（原因：javax.mail.MessagingException：[EOF]）")
java.lang.RuntimeException：javax.mail.MessagingException：[EOF]（原因：javax.mail.MessagingException：[EOF]）
我正在尝试使用usig javax.mail 写一个简单的邮件发件人 __
MailService：
@Service
public class MailServiceImpl implements MailService {
private String username;
private String password;
private Properties properties;
private MailServiceImpl() {
this.username ="my@gmail.com";
this.password = "my";
properties = new Properties();
properties.put("mail.smtp.host","smtp.gmail.com");
properties.put("mail.smtp.socketFactory.port","465");
properties.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
properties.put("mail.smtp.auth","true");
properties.put("mail.smtp.port","465");
}
@Override
public void sendMail(String to,String subject,String body) {
Session session = Session.getInstance(properties,new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username,password);
}
});
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(username));
message.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
message.setSubject(subject);
message.setText(body);
Transport.send(message);
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
日志：
org.springframework.web.servlet.FrameworkServlet 2017-05-18 16:34:01,172 DEBUG - Could not complete request
java.lang.RuntimeException: javax.mail.MessagingException: [EOF]
at by.netcracker.artemyev.service.impl.MailServiceImpl.sendMail(MailServiceImpl.java:46)
at by.netcracker.artemyev.service.impl.UserServiceImpl.addUser(UserServiceImpl.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy39.addUser(Unknown Source)
at by.netcracker.artemyev.web.UserController.registrationUser(UserController.java:48)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:475)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:495)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:767)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1354)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.mail.MessagingException: [EOF]
at com.sun.mail.smtp.SMTPTransport.issueCommand(SMTPTransport.java:1363)
at com.sun.mail.smtp.SMTPTransport.helo(SMTPTransport.java:836)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:375)
at javax.mail.Service.connect(Service.java:297)
at javax.mail.Service.connect(Service.java:156)
at javax.mail.Service.connect(Service.java:105)
at javax.mail.Transport.send0(Transport.java:168)
at javax.mail.Transport.send(Transport.java:98)
at by.netcracker.artemyev.service.impl.MailServiceImpl.sendMail(MailServiceImpl.java:44)
... 54 more
参数：
public static final String TOPIC_REGISTRATION = "REGISTRATION";
public static final String NOTIFICATION_MESSAGE = "Thank you for registration";
mailService.sendMail(userMail,TOPIC_REGISTRATION,NOTIFICATION_MESSAGE);
问题： 为什么我有此问题以及如何解决此问题？
我知道这是一个非常受欢迎的问题，但是我找不到解决方法
编辑：
@Service
public class MailServiceImpl implements MailService {
private String username;
private String password;
private Properties properties;
private MailServiceImpl() {
this.username ="my@gmail.com";
this.password = "my";
properties = new Properties();
properties.put("mail.smtp.host","imap.gmail.com");
properties.put("mail.smtp.auth","465");
properties.put("mail.smtp.ssl.enable","true");
}
@Override
public void sendMail(String to,String body) {
String host = "imap.gmail.com";
Properties props = new Properties();
Session session = Session.getInstance(props);
Store store = null;
try {
store = session.getStore("imap");
store.connect(host,username,password);
} catch (MessagingException e) {
e.printStackTrace();
}
}
}
日志：
javax.mail.MessagingException: Connection timed out: connect;
nested exception is:
java.net.ConnectException: Connection timed out: connect
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:479)
at javax.mail.Service.connect(Service.java:275)
at javax.mail.Service.connect(Service.java:156)
at by.netcracker.artemyev.service.impl.MailServiceImpl.sendMail(MailServiceImpl.java:37)
at by.netcracker.artemyev.service.impl.UserServiceImpl.addUser(UserServiceImpl.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy39.addUser(Unknown Source)
at by.netcracker.artemyev.web.UserController.registrationUser(UserController.java:48)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:475)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:495)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:767)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1354)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at java.net.Socket.connect(Socket.java:538)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:232)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
at com.sun.mail.iap.Protocol.<init>(Protocol.java:84)
at com.sun.mail.imap.protocol.IMAPProtocol.<init>(IMAPProtocol.java:87)
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:446)
... 57 more
Android FATAL EXCEPTION MAIN：java.lang.RuntimeException：无法启动活动ComponentInfo
我是编程android的nubie,我知道这里有4m是很多页面为我的问题打乱解决方案,但现在我输了2天仍然没有得到解决方案.请帮我！
首先是我的错误：
01-02 11:08:27.314: D/AndroidRuntime(1045): Shutting down VM
01-02 11:08:27.314: W/dalvikvm(1045): threadid=1: thread exiting with uncaught exception (group=0x409e61f8)
01-02 11:08:27.324: E/AndroidRuntime(1045): FATAL EXCEPTION: main
01-02 11:08:27.324: E/AndroidRuntime(1045): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.wifiscan/com.example.wifiscan.activity_wifi_scan}: java.lang.classNotFoundException: com.example.wifiscan.activity_wifi_scan
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:1880)
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.app.ActivityThread.access$600(ActivityThread.java:123)
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.os.Handler.dispatchMessage(Handler.java:99)
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.os.Looper.loop(Looper.java:137)
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.app.ActivityThread.main(ActivityThread.java:4424)
01-02 11:08:27.324: E/AndroidRuntime(1045): at java.lang.reflect.Method.invokeNative(Native Method)
01-02 11:08:27.324: E/AndroidRuntime(1045): at java.lang.reflect.Method.invoke(Method.java:511)
01-02 11:08:27.324: E/AndroidRuntime(1045): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-02 11:08:27.324: E/AndroidRuntime(1045): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-02 11:08:27.324: E/AndroidRuntime(1045): at dalvik.system.NativeStart.main(Native Method)
01-02 11:08:27.324: E/AndroidRuntime(1045): Caused by: java.lang.classNotFoundException: com.example.wifiscan.activity_wifi_scan
01-02 11:08:27.324: E/AndroidRuntime(1045): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
01-02 11:08:27.324: E/AndroidRuntime(1045): at java.lang.classLoader.loadClass(ClassLoader.java:501)
01-02 11:08:27.324: E/AndroidRuntime(1045): at java.lang.classLoader.loadClass(ClassLoader.java:461)
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
01-02 11:08:27.324: E/AndroidRuntime(1045): at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:1871)
01-02 11:08:27.324: E/AndroidRuntime(1045): ... 11 more
我的WifiScan：
public class WifiScan extends Activity implements OnClickListener {
WifiManager wifi;
ListView lv;
TextView textStatus;
Button buttonScan;
int size = 0;
List<ScanResult> results;
String ITEM_KEY = "key";
ArrayList<HashMap<String, String>> arraylist = new ArrayList<HashMap<String, String>>();
SimpleAdapter adapter;
/* Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_wifi_scan);
buttonScan = (Button) findViewById(R.id.scan);
buttonScan.setonClickListener(this);
lv = (ListView)findViewById(R.id.list);
wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled() == false)
{
Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
wifi.setWifiEnabled(true);
}
wifi.startScan(); //js dopisal
// this.adapter = new SimpleAdapter(WiFiDemo.this, arraylist, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.list_value });
lv.setAdapter(this.adapter);
registerReceiver(new broadcastReceiver()
{
@Override
public void onReceive(Context c, Intent intent)
{
results = wifi.getScanResults();
size = results.size();
}
}, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
}
public void onClick(View view)
{
arraylist.clear();
wifi.startScan();
Toast.makeText(this, "Scanning...." + size, Toast.LENGTH_SHORT).show();
try
{
size = size - 1;
while (size >= 0)
{
HashMap<String, String> item = new HashMap<String, String>();
item.put(ITEM_KEY, results.get(size).SSID + " " + results.get(size).capabilities);
arraylist.add(item);
size--;
adapter.notifyDataSetChanged();
}
}
catch (Exception e)
{ }
}
}
我的activity_wifi_scan.xml文件：
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/TableLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".WifiScan" >
<Button
android:id="@+id/scan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="scan"
android:text="SCAN" />
<ListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</TableLayout>
和我的AndroidManifest文件：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.wifiscan"
android:versionCode="1"
android:versionName="1.0" >
<uses-premission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.READ_PHONE_STATE"> </uses-permission>
<uses-permission android:name="android.permission.INTERNET"> </uses-permission>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity android:name=".activity_wifi_scan">
<intent-filter>
<action android:name="android.intent.action.MAIN"></action>
<category android:name="android.intent.category.LAUNCHER"></category>
<data />
</intent-filter>
</activity>
<receiver android:name=".activity_wifi_scan">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER"/>
<action android:name="android.net.wifi.WIFI_STATE_CHANGED"/>
</intent-filter>
</receiver>
</application>
</manifest>
解决方法:
您的活动名称是WifiScan但您已将其声明为.activity_wifi_scan更改它并重试.
更改<活动>要素：
<activity android:name=".WifiScan">
<intent-filter>
<action android:name="android.intent.action.MAIN"></action>
<category android:name="android.intent.category.LAUNCHER"></category>
<data />
</intent-filter>
</activity>
android – java.lang.RuntimeException：无法实例化活动ComponentInfo / java.lang.ClassNotFoundException
我在设备上运行时遇到此错误.我一直在浏览这个问题,我很确定我没有提到的问题.我的两个活动都在
AndroidManifest中声明,而intent过滤器就在那里.我没有任何库(除了v4支持库,但声明它不会改变问题).我尝试用.MainActivity替换我的Manifest carpedujourproductions.quickpronote.MainActivity,但仍然没有运气.我正在运行Android Studio 0.2.5,所以我找不到如何解决与Java Build Path / Order and Export相关的潜在问题
我忍不住注意到我的MainActivity图标在树的左上角有一个灰色的十字架.
logcat的：
E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{carpedujourproductions.quickpronote/carpedujourproductions.quickpronote.MainActivity}: java.lang.classNotFoundException: Didn't find class "carpedujourproductions.quickpronote.MainActivity" on path: DexPathList[[zip file "/data/app/carpedujourproductions.quickpronote-2.apk"],nativeLibraryDirectories=[/data/app-lib/carpedujourproductions.quickpronote-2,/vendor/lib,/system/lib]]
at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:2157)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2281)
at android.app.ActivityThread.access$600(ActivityThread.java:148)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1263)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5124)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:110)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.classNotFoundException: Didn't find class "carpedujourproductions.quickpronote.MainActivity" on path: DexPathList[[zip file "/data/app/carpedujourproductions.quickpronote-2.apk"],/system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
at java.lang.classLoader.loadClass(ClassLoader.java:501)
at java.lang.classLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:2148)
... 12 more
随意浏览AndroidManifest,MainActivity.java,FirstRun.java等代码here.
解决方法
您的MainActivity.java被排除在编译之外,因此该类不包含在.apk中.删除行：
<file url="file://$PROJECT_DIR$/src/carpedujourproductions/quickpronote/MainActivity.java" />
来自.idea / compiler.xml文件的excludeFromCompile部分(或者您可以从IDE设置执行此操作).
android – java.lang.RuntimeException：无法实例化活动ComponentInfo … java.lang.ClassNotFoundException
我有一个问题,我正在处理三天,我试图阅读不同的答案,但它没有帮助.
也有人可以帮助我！
我将Ancdroid应用程序作为客户端编写为一个安静的Web服务.我可以从数据库中获取数据而没有问题,但我的问题是我使用的2个活动来处理来自数据库的这个文件.
主要活动
public class MainActivity extends Activity {
private static final String SERVICE_URL = "http://10.0.2.2:8080/.....";
private static final String TAG = "AndroidRESTClientActivity";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void retrieveSampleData(View vw) {
EditText idTxt = (EditText) findViewById(R.id.id_textfield);
String id = idTxt.getText().toString();
String sampleURL = SERVICE_URL +"daten/"+id ;
Log.d("getrespond()", "service calling");
String url =sampleURL;
RestClient client = new RestClient(url);
try{
client.Execute(RestClient.RequestMethod.GET,this.getApplicationContext());
}
catch (Exception e) {
String error = String.valueOf(e);
Log.d("**********client.Execute(RequestMethod.GET);***********",error);
}
try {
if(client.getResponseCode() == 200) {
Log.d("Response is 200", String.valueOf(client.getResponse().length()));
System.out.println(this.getFilesDir().getPath().toString());
File daten= client.getResponse();
System.out.println(daten.getName());
Toast.makeText(this.getApplicationContext(), "Responce is "+String.valueOf(client.getResponseCode()), 2000).show();
} else {
String error = String.valueOf(client.getResponse());
Log.d("Response*********** not 200 ************", String.valueOf(client.getResponse()));
}
}catch (Exception e) {
e.printstacktrace();
Log.d("EXCEPTIONI IS 3", e.toString());
// Todo: handle exception
}
startActivity(new Intent("android.intent.action.LINEGRAPH"));
我从主要开始的另一项活动：
public class lineGraph extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_line_graph);
}
@Override
protected void onResume() {
super.onResume();
if (mChartView == null) {
LinearLayout layout = (LinearLayout) findViewById(R.id.chart);
try {
mChartView = ChartFactory.getLineChartView(this, getDemoDataset(),
getDemoRenderer());
} catch (IOException e) {
// Todo Auto-generated catch block
e.printstacktrace();
}
layout.addView(mChartView, new LayoutParams
(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
} else {
mChartView.repaint();
}
}
的Manifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.praktikum.androidcrestclient"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" >
</uses-permission>
<uses-permission android:name="android.permission.INTERNET" >
</uses-permission>
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.praktikum.androidcrestclient.LineGraph"
android:label="@string/title_activity_line_graph" >
<intent-filter>
<action android:name="android.intent.action.LINEGRAPH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name="org.achartengine.GraphicalActivity"/>
</application>
</manifest>
在这里我的LogCat
10-08 09:23:10.140: D/AndroidRuntime(4706): Shutting down VM
10-08 09:23:10.140: W/dalvikvm(4706): threadid=1: thread exiting with uncaught exception (group=0x40015560)
10-08 09:23:10.161: E/AndroidRuntime(4706): FATAL EXCEPTION: main
10-08 09:23:10.161: E/AndroidRuntime(4706): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.praktikum.androidcrestclient/com.praktikum.androidcrestclient.LineGraph}: java.lang.classNotFoundException: com.praktikum.androidcrestclient.LineGraph in loader dalvik.system.PathClassLoader[/data/app/com.praktikum.androidcrestclient-1.apk]
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:1569)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.os.Handler.dispatchMessage(Handler.java:99)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.os.Looper.loop(Looper.java:123)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.main(ActivityThread.java:3683)
10-08 09:23:10.161: E/AndroidRuntime(4706): at java.lang.reflect.Method.invokeNative(Native Method)
10-08 09:23:10.161: E/AndroidRuntime(4706): at java.lang.reflect.Method.invoke(Method.java:507)
10-08 09:23:10.161: E/AndroidRuntime(4706): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
10-08 09:23:10.161: E/AndroidRuntime(4706): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
10-08 09:23:10.161: E/AndroidRuntime(4706): at dalvik.system.NativeStart.main(Native Method)
10-08 09:23:10.161: E/AndroidRuntime(4706): Caused by: java.lang.classNotFoundException: com.praktikum.androidcrestclient.LineGraph in loader dalvik.system.PathClassLoader[/data/app/com.praktikum.androidcrestclient-1.apk]
10-08 09:23:10.161: E/AndroidRuntime(4706): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
10-08 09:23:10.161: E/AndroidRuntime(4706): at java.lang.classLoader.loadClass(ClassLoader.java:551)
10-08 09:23:10.161: E/AndroidRuntime(4706): at java.lang.classLoader.loadClass(ClassLoader.java:511)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
10-08 09:23:10.161: E/AndroidRuntime(4706): at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:1561)
10-08 09:23:10.161: E/AndroidRuntime(4706): ... 11 more
10-08 09:23:10.180: W/ActivityManager(89): Force finishing activity com.praktikum.androidcrestclient/.LineGraph
10-08 09:23:10.180: W/ActivityManager(89): Force finishing activity com.praktikum.androidcrestclient/.MainActivity
10-08 09:23:10.690: W/ActivityManager(89): Activity pause timeout for HistoryRecord{4094eea0 com.praktikum.androidcrestclient/.LineGraph}
10-08 09:23:12.330: I/Process(4706): Sending signal. PID: 4706 SIG: 9
10-08 09:23:12.350: I/ActivityManager(89): Process com.praktikum.androidcrestclient (pid 4706) has died.
10-08 09:23:12.360: E/Inputdispatcher(89): channel '4065ae98 com.praktikum.androidcrestclient/com.praktikum.androidcrestclient.MainActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x8
10-08 09:23:12.360: E/Inputdispatcher(89): channel '4065ae98 com.praktikum.androidcrestclient/com.praktikum.androidcrestclient.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
10-08 09:23:12.490: I/WindowManager(89): WIN DEATH: Window{4065ae98 com.praktikum.androidcrestclient/com.praktikum.androidcrestclient.MainActivity paused=true}
10-08 09:23:12.500: I/WindowManager(89): WIN DEATH: Window{406c1140 Toast paused=false}
10-08 09:23:12.600: W/InputManagerService(89): Got remoteexception sending setActive(false) notification to pid 4706 uid 10034
10-08 09:23:12.660: E/Inputdispatcher(89): Received spurIoUs receive callback for unkNown input channel. fd=168, events=0x8
10-08 09:23:16.820: D/dalvikvm(396): GC_EXPLICIT freed 7K, 54% free 2537K/5511K, external 1625K/2137K, paused 43ms
10-08 09:23:21.626: W/ActivityManager(89): Activity destroy timeout for HistoryRecord{4094e768 com.praktikum.androidcrestclient/.MainActivity}
10-08 09:23:21.626: W/ActivityManager(89): Activity destroy timeout for HistoryRecord{4094eea0 com.praktikum.androidcrestclient/.LineGraph}
10-08 09:23:21.900: D/dalvikvm(299): GC_EXPLICIT freed 12K, 55% free 2589K/5703K, external 1625K/2137K, paused 73ms
10-08 09:23:26.950: D/dalvikvm(407): GC_EXPLICIT freed 4K, 55% free 2532K/5511K, external 1625K/2137K, paused 57ms
10-08 09:24:54.097: D/SntpClient(89): request time Failed: java.net.socketException: Address family not supported by protocol
10-08 09:29:54.106: D/SntpClient(89): request time Failed: java.net.socketException: Address family not supported by protocol
10-08 09:34:54.130: D/SntpClient(89): request time Failed: java.net.socketException: Address family not supported by protocol
你能帮我找一下为什么它找不到这个其他的活动.
谢谢
解决方法:
在此声明中将类的名称更改为“LineGraph”而不是“lineGraph”：
public class LineGraph extends Activity{
Android-Studio-2.3错误：java.util.concurrent.ExecutionException：java.lang.RuntimeException：AAPT进程尚未准备好接收命令
大家好,我是
Android-Studio-2.3的新手
我弹出这些错误消息：
错误：java.util.concurrent.ExecutionException：java.lang.RuntimeException：AAPT进程尚未准备好接收命令
错误：任务’：app：mergeDebugResources’的执行失败.
Error: java.util.concurrent.ExecutionException: java.lang.RuntimeException: AAPT process not ready to receive commands
我去过很多网站,但我找不到解决这个问题的办法
顺便说一句,我已经尝试将我的gradle降级到23.0.0或23.0.1,但它仍然无效. Android-Studio要求我下载25.0.0版本但是当我这样做时,上面的错误消息仍然出现！
有没有人有解决方案,我会非常感激:)
解决方法
我有同样的问题,也没有解决它.但：
我假设你试图在Ubuntu上安装android studio？如果我是对的,你可以查看你有哪个操作系统.如果它是64位操作系统,您可以尝试使用以下内容：
我假设你试图在Ubuntu上安装android studio？如果我是对的,你可以查看你有哪个操作系统.如果它是64位操作系统,您可以尝试使用以下内容：
sudo apt-get install lib32stdc++6 sudo apt-get install lib32z1
也许有帮助.
我们今天的关于java.lang.RuntimeException：javax.mail.MessagingException：[EOF]和原因：javax.mail.MessagingException：[EOF]的分享已经告一段落，感谢您的关注，如果您想了解更多关于Android FATAL EXCEPTION MAIN：java.lang.RuntimeException：无法启动活动ComponentInfo、android – java.lang.RuntimeException：无法实例化活动ComponentInfo / java.lang.ClassNotFoundException、android – java.lang.RuntimeException：无法实例化活动ComponentInfo … java.lang.ClassNotFoundException、Android-Studio-2.3错误：java.util.concurrent.ExecutionException：java.lang.RuntimeException：AAPT进程尚未准备好接收命令的相关信息，请在本站查询。
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