当我在Eclipse中调试一个简单的控制台应用程序时,我在调试窗口中获得了很多ClassNotFoundException行.这不是一个错误,在另一个窗格中稍微低一些,我得到"Source not found.".我明白这是因为所需类的源代码不可用,我想跳过这些行...我必须按很多次"跳过"或"跳出"按钮才能退出这些州.
为了避免这些无用的线路我该怎么办？
谢谢
设置: Eclipse Juno R,Tomcat 7.0.8,tomcat通过eclipse插件运行.来自eclipse的Tomcat启动配置有VM参数-Djava.util.logging.config.file ="C:\ WS\Serverlogs\tomcat7\conf\logging .properties"(参考:我在哪里可以查看Eclipse中的Tomcat日志文件？)获取以下错误.
Can't load log handler "1catalina.org.apache.juli.FileHandler"
java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler
java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.util.logging.LogManager$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.logging.LogManager.loadLoggerHandlers(Unknown Source)
at java.util.logging.LogManager.addLogger(Unknown Source)
at java.util.logging.LogManager$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.logging.LogManager.<clinit>(Unknown Source)
at java.util.logging.Logger.getLogger(Unknown Source)
at org.apache.juli.logging.DirectJDKLog.<init>(DirectJDKLog.java:71)
at org.apache.juli.logging.DirectJDKLog.getInstance(DirectJDKLog.java:196)
at org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:170)
at org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:242)
at org.apache.juli.logging.LogFactory.getLog(LogFactory.java:293)
at org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:57)
Can't load log handler …这个项目在更新到ADT22之前创造了奇迹.我已经失去了一天,因为我不知道我必须下载构建工具,而且我担心因为这个原因我将失去另一个.
当我尝试构建两天前工作的相同代码时,我遇到了这个异常:
com.cidaut.blueparking fatal error : Unable to instantiate activity \
ComponentInfo{com.cidaut.blueparking/com.cidaut.blueparking.SplashScreen_}: \
java.lang.ClassNotFoundException: \
Didn't find class "com.cidaut.blueparking.SplashScreen_" on path: \
/data/app/com.cidaut.blueparking-1.apk
java.lang.RuntimeException: Unable to instantiate activity \
ComponentInfo{com.cidaut.blueparking/com.cidaut.blueparking.SplashScreen_}: \
java.lang.ClassNotFoundException: \
Didn't find class "com.cidaut.blueparking.SplashScreen_" on path: \
/data/app/com.cidaut.blueparking-1.apk
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5041)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: \
Didn't find class "com.cidaut.blueparking.SplashScreen_" on path: \ …android classnotfoundexception eclipse-adt android-annotations
我在我的系统中安装了ubuntu 10.10并使用以下命令安装了ant:sudo apt-get install ant
现在,ant在共享文件夹中可见,所以我试图在终端中运行ant命令,但它给了我这个错误:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.launch.Launcher
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: org.apache.tools.ant.launch.Launcher. Program will exit.
然后我再次设置这些:
JAVA_HOME="/usr/lib/jvm/java-6-sun-1.6.0.22/"
ANT_HOME="/usr/share/ant/"
PATH="/usr/share/ant/bin/"
现在它给了我同样的错误,但在开始时有一个不同的行:
/usr/share/ant/bin/ant: 92: uname: not found
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.launch.Launcher
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: org.apache.tools.ant.launch.Launcher. Program …我正在运行的程序在这里上差异的物理机器2级的JVM.我收到了错误
RemoteException
java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: CalculatorImpl_Stub (no security manager: RMI class loader disabled)
我甚至尝试在同一台机器上运行它(未更改的程序)并且它可以工作但它在diff机器上不起作用.有人可以帮助我吗？
@ beny23-谢谢,但我仍然得到这个错误:
RemoteException
java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: CalculatorImpl_Stub
客户端如何拥有CalculatorImpl_stub的副本？
嗨,我有以下配置.
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>8.1.3.v20120416</version>
</plugin>
在我的jetty-env.xml中我有
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://www.eclipse.org/jetty/configure.dtd">
<Configure class="org.mortbay.jetty.webapp.WebAppContext">
</Configure>
当我用mvn jetty运行时:运行我得到以下错误.
Caused by: java.lang.ClassNotFoundException: org.mortbay.jetty.webapp.WebAppCont
ext
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at org.eclipse.jetty.util.Loader.loadClass(Loader.java:92)
at org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.nodeClas
s(XmlConfiguration.java:349)
at org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configur
e(XmlConfiguration.java:314)
at org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.jav
a:279)
at org.mortbay.jetty.plugin.AbstractJettyMojo.applyJettyXml(AbstractJett
yMojo.java:449)
at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMo
jo.java:467)
我该如何解决？
我正在开发Android应用程序,而不是我想要额外的新Activity我在我的logcat上有错误
我的LogCat:
04-19 12:59:17.654: D/AndroidRuntime(18135): Shutting down VM
04-19 12:59:17.654: W/dalvikvm(18135): threadid=1: thread exiting with uncaught exception (group=0x4001d878)
04-19 12:59:17.684: E/AndroidRuntime(18135): FATAL EXCEPTION: main
04-19 12:59:17.684: E/AndroidRuntime(18135): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.bvblogic.android.batterypower/com.bvblogic.android.batterypower.activities.UnlockActivity}: java.lang.ClassNotFoundException: com.bvblogic.android.batterypower.activities.UnlockActivity in loader dalvik.system.PathClassLoader[/data/app/com.bvblogic.android.batterypower-1.apk]
04-19 12:59:17.684: E/AndroidRuntime(18135): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2587)
04-19 12:59:17.684: E/AndroidRuntime(18135): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2681)
04-19 12:59:17.684: E/AndroidRuntime(18135): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-19 12:59:17.684: E/AndroidRuntime(18135): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-19 12:59:17.684: E/AndroidRuntime(18135): at android.os.Handler.dispatchMessage(Handler.java:99)
04-19 12:59:17.684: E/AndroidRuntime(18135): at android.os.Looper.loop(Looper.java:123)
04-19 12:59:17.684: E/AndroidRuntime(18135): at android.app.ActivityThread.main(ActivityThread.java:4640)
04-19 12:59:17.684: E/AndroidRuntime(18135): at java.lang.reflect.Method.invokeNative(Native Method)
04-19 …以下Groovy脚本失败并出现java.lang.ClassNotFoundException: com.mysql.jdbc.Driver异常.
@Grapes([
@Grab('mysql:mysql-connector-java:5.1.25')
])
import groovy.sql.Sql
def sql = Sql.newInstance(
'jdbc:mysql://localhost/books',
'root',
'',
'com.mysql.jdbc.Driver'
);
我查看了存储在的JAR文件C:\Users\Dusan\.groovy\grapes\mysql\mysql-connector-java\jars\mysql-connector-java-5.1.25.jar,它包含Driver类.
有什么不对？
我在我的Netbeans 7.4中尝试了这个代码,它没有问题
import java.io.IOException;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
public class JavaApplication148 {
public static void main(String[] args) throws IOException {
URL url = new URL("https://redmine.ackee.cz/time_entries.xml");
HttpsURLConnection httpCon = (HttpsURLConnection) url.openConnection();
}
}
然而,我在我的maven驱动的项目中使用它在eclipse中它抛出以下异常:
java.lang.ClassCastException: com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnectionOldImpl
cannot be cast to javax.net.ssl.HttpsURLConnection
这是我的maven项目中的一个抛出错误的类
package cz.ackee.redmine.commands;
import java.io.IOException;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
public abstract class RedmineCommand {
public void write(String xmlAddress, String text, String requestMethod) throws IOException{
URL url = new URL("https://redmine.xxx.cz/time_entries.xml");
HttpsURLConnection httpCon = (HttpsURLConnection) url.openConnection(); //this line throws exception
}
} …我正在尝试模糊我的JavaFX应用程序,但它失败了.生成的结果不起作用,我不明白为什么.生成的jar只是失败,因为fxml文件不能再加载所有导入(ClassNotFoundException).
示例应用程序'GuardTest'是一个IntelliJ项目,由3个类组成.
'sample.fxml'的内容:
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.VBox?>
<?import controls.CustomControl?>
<VBox fx:controller="sample.Controller"
xmlns:fx="http://javafx.com/fxml">
<children>
<CustomControl>
<children>
<Button text="Test"></Button>
</children>
</CustomControl>
</children>
</VBox>
现在我使用ProGuard生成从上面的项目生成的jar文件.我使用以下设置:
-target 8
-injars ./out/artifacts/JavaFXApp/JavaFXApp.jar
-outjars ./out/obfuscated/Obfuscated.jar
-ignorewarnings
-printmapping ./out/obfuscated/proguard.map
-dontusemixedcaseclassnames
-dontshrink
-dontoptimize
-dontskipnonpubliclibraryclasses
-dontskipnonpubliclibraryclassmembers
#-flattenpackagehierarchy
-repackageclasses 'p'
-allowaccessmodification
-libraryjars "<java.home>/lib/rt.jar"
-libraryjars "<java.home>/lib/javaws.jar"
-libraryjars "<java.home>/lib/ext/jfxrt.jar"
-adaptresourcefilecontents **.fxml,**.properties,META-INF/MANIFEST.MF,images/*.jar,publicCerts.store,production.version
-keepattributes javafx.fxml.FXML,Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,LocalVariable*Table,*Annotation*,Synthetic,EnclosingMethod
-keepclassmembers class * {
@javafx.fxml.FXML *;
}
-keepclassmembernames public class com.javafx.main.Main, com.nywelt.sharkload.application.Main {
public static void main(java.lang.String[]);
}
-keepclasseswithmembers …