如果您对java.lang.ClassNotFoundException：org.apache.commons.lang.UnhandledException感兴趣，那么本文将是一篇不错的选择，我们将
如果您对java.lang.ClassNotFoundException：org.apache.commons.lang.UnhandledException感兴趣，那么本文将是一篇不错的选择，我们将为您详在本文中，您将会了解到关于java.lang.ClassNotFoundException：org.apache.commons.lang.UnhandledException的详细内容，并且为您提供关于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、Caused by: java.lang.ClassNotFoundException: com.google.protobuf.ServiceException、Caused by: java.lang.ClassNotFoundException: org.apache.commons.collections.Transformer异常的有价值信息。
本文目录一览：- java.lang.ClassNotFoundException：org.apache.commons.lang.UnhandledException
- 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
- Caused by: java.lang.ClassNotFoundException: com.google.protobuf.ServiceException
- Caused by: java.lang.ClassNotFoundException: org.apache.commons.collections.Transformer异常
java.lang.ClassNotFoundException：org.apache.commons.lang.UnhandledException
在运行tomcat时，我得到这样的错误：（在代码中，直到控制器，它都可以正常工作，但是在JSP页面中，它给出了错误），请问有什么可以帮忙的吗？
Oct 30, 2013 4:48:16 PM org.apache.catalina.core.ApplicationDispatcher invokeSEVERE: Servlet.service() for servlet jsp threw exceptionjava.lang.ClassNotFoundException: org.apache.commons.lang.UnhandledException at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2404) at java.lang.Class.getConstructor0(Class.java:2714) at java.lang.Class.newInstance0(Class.java:343) at java.lang.Class.newInstance(Class.java:325) at com.sun.beans.finder.InstanceFinder.instantiate(InstanceFinder.java:96) at com.sun.beans.finder.InstanceFinder.find(InstanceFinder.java:66) at java.beans.Introspector.findExplicitBeanInfo(Introspector.java:455) at java.beans.Introspector.<init>(Introspector.java:405) at java.beans.Introspector.getBeanInfo(Introspector.java:174) at org.apache.jasper.compiler.Generator$TagHandlerInfo.<init>(Generator.java:3911) at org.apache.jasper.compiler.Generator$GenerateVisitor.getTagHandlerInfo(Generator.java:2174) at org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1632) at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1530) at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361) at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2411) at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2417) at org.apache.jasper.compiler.Node$Root.accept(Node.java:495) at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361) at org.apache.jasper.compiler.Generator.generate(Generator.java:3461) at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:231) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:354) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:334) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:321) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) at javax.servlet.http.HttpServlet.service(HttpServlet.java:723) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488) at com.preva.controller.OverspeedDBProcess.service(OverspeedDBProcess.java:86) at javax.servlet.http.HttpServlet.service(HttpServlet.java:723) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1760) at java.lang.Thread.run(Thread.java:722)像这样的控制器
package com.preva.controller;import java.io.IOException;import java.io.PrintWriter;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.List;import javax.servlet.RequestDispatcher;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import com.preva.dao.UserDAO;import com.preva.vo.OverspeedDetails;/** * Servlet implementation class OverspeedDBProcess */public class OverspeedDBProcess extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public OverspeedDBProcess() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub try{ response.setContentType("text/html"); PrintWriter out=response.getWriter(); HttpSession session=request.getSession(true); String accountID=(String)session.getAttribute("sessionId"); String deviceID=request.getParameter("vehicleId"); String fromDate=request.getParameter("AnotherDate"); String toDate=request.getParameter("ADate"); String stringspeed=request.getParameter("speed").substring(1,3); double speed=Double.parseDouble(stringspeed); session.setAttribute("vid",deviceID); session.setAttribute("fromdate",fromDate); session.setAttribute("startdate",toDate); SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss"); Date startD = (Date) sdf.parse(fromDate); Date endD = (Date) sdf.parse(toDate); Calendar cal1 = Calendar.getInstance(); Calendar cal2 = Calendar.getInstance(); cal1.setTime(startD); cal2.setTime(endD); long timestamp1,timestamp2; timestamp1=cal1.getTimeInMillis()/1000; timestamp2=cal2.getTimeInMillis()/1000; System.out.println("::::"+timestamp1); System.out.println("::::"+timestamp2); String Timestamp1 = Long.toString(timestamp1); String Timestamp2 = Long.toString(timestamp2); UserDAO rdao=new UserDAO(); List<OverspeedDetails> overspeeddetail=rdao.getosDetails(accountID, deviceID, Timestamp1, Timestamp2,speed); if(!(overspeeddetail.isEmpty())){ session.setAttribute("overspeeddetails", overspeeddetail); RequestDispatcher rd=request.getRequestDispatcher("OverspeedDBReport.jsp"); rd.include(request,response); return; } RequestDispatcher rd=request.getRequestDispatcher("DataNotFound.jsp"); rd.include(request,response); }catch (Exception e) { // TODO: handle exception } } }像这样的Jsp页面
<%@page contentType="text/html" pageEncoding="UTF-8"%><%@ page import = "com.preva.vo.StoppageDetails"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%><%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %><%@ taglib uri="http://displaytag.sf.net" prefix="display" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><link href="css/cal.css" rel="stylesheet" type="text/css" /><link href="css/sty.css" rel="stylesheet" type="text/css" /><link href="css/tabborder.css" rel="stylesheet" type="text/css" /></head><body> <jsp:include page="Header.jsp" /> <table align=center border=0 cellspacing=0 cellpadding=0> <tr ><td colSpan=5 align=center><b>Overspeed Details</b></td></tr> <tr ><td colspan=5 align=center><b><%=request.getParameter("vehicleId") %></b></td></tr> <tr><td>From <%=session.getAttribute("fromdate") %> to <%=session.getAttribute("startdate") %></td></tr> </table><br></br> <tablerptTbl_sortable'' width=''80%'' align=center cellspacing=''2'' cellpadding=''0'' border=''0''> <thead> <tr> <th id="index"nowrap>DeviceID</th> <th id="date"nowrap>Date</th> <th id="time"nowrap>Speed</th> <th id="statusdesc"nowrap>Status</th> <th id="address"nowrap>Address</th></tr></thead><tbody><display:table id="deviceDetailsID" name="sessionScope.overspeeddetails" pagesize="10"> <display:setProperty name="basic.empty.showtable" value="true" /> <display:setProperty name="paging.banner.group_size" value="10" /> <display:setProperty name="paging.banner.item_name" value="user" /> <display:setProperty name="paging.banner.item_names" value="users" /> <display:column property="deviceID" title="Device ID" sortable="true" header/> <display:column property="TIMESTAMP" title="TIMESTAMP" sortable="true" headerformat="{0,date,dd-MM-yyyy}"/> <display:column property="speed" title="Speed" sortable="true"/> <display:column property="statuscode" title="Status Code"/> <display:column property="address" title="Address" sortable="true" header/></display:table> </tbody> </table></body>答案1
小编典典您需要在类路径中添加Commons Lang 2.6 jar以避免此异常。
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{
Caused by: java.lang.ClassNotFoundException: com.google.protobuf.ServiceException
@杨桃兄弟 你好，想跟你请教个问题：
<dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-client</artifactId> <version>2.7.2</version> <!-- <version>2.2.0</version>--> </dependency> <dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-common</artifactId> <version>2.7.2</version> </dependency> <dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-hdfs</artifactId> <version>2.7.2</version> </dependency> <dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-mapreduce-client-core</artifactId> <version>2.7.2</version> </dependency>
我pom 文件里的，一直报这个错
Caused by: java.lang.ClassNotFoundException: org.apache.commons.collections.Transformer异常
这篇文章主要介绍了Caused by: java.lang.classNotFoundException: org.objectweb.asm.Type异常，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧
今天做了一个java对象转Map的例子，执行的时候报错了，如下：
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/collections/Transformer
at java.lang.classLoader.defineClass1(Native Method)
at java.lang.classLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.urlclassloader.defineClass(urlclassloader.java:260)
at java.net.urlclassloader.access$000(urlclassloader.java:56)
at java.net.urlclassloader$1.run(urlclassloader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.urlclassloader.findClass(urlclassloader.java:188)
at java.lang.classLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.classLoader.loadClass(ClassLoader.java:252)
at java.lang.classLoader.loadClassInternal(ClassLoader.java:320)
at org.apache.commons.beanutils.BeanMap.createTypeTransformers(BeanMap.java:132)
at org.apache.commons.beanutils.BeanMap.(BeanMap.java:68)
at com.example2.pojo.PojoToMap.objectToMap(PojoToMap.java:23)
at com.example2.pojo.PojoToMap.main(PojoToMap.java:16)
Caused by: java.lang.classNotFoundException: org.apache.commons.collections.Transformer
at java.net.urlclassloader$1.run(urlclassloader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.urlclassloader.findClass(urlclassloader.java:188)
at java.lang.classLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.classLoader.loadClass(ClassLoader.java:252)
at java.lang.classLoader.loadClassInternal(ClassLoader.java:320)
... 16 more
先贴上本例的主要代码吧：
package com.example2.pojo; import java.util.Map; import java.util.Set; import org.apache.commons.beanutils.BeanMap; public class PojoToMap { /** * @param args */ public static void main(String[] args) { Employee employee = new Employee(); employee.setName("张三"); employee.setAge(30); Map map; try { map = objectToMap(employee); Set> set = map.entrySet(); for (Map.Entry entry : set) { System.out.println(entry.getKey() + " : " + entry.getValue()); } } catch (Exception e) { e.printstacktrace(); } } public static Map, ?> objectToMap(Object obj) { if (obj == null) return null; return new BeanMap(obj); } }
Employee类：
package com.example2.pojo; public class Employee { private String name; private Integer age; public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } }
从报错信息上看，是缺少了org.apache.commons.collections.Transformer类，网上下载了commons-collections-3.2.1.jar包，引入后，重新执行，成功。
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