在我们的EJB 3.0应用程序中,我们发生了随机发生的
java.lang.NoClassDefFoundError.
它恰好发生在IDE中.
建立：
OS: Windows 7 32 Bit Java JDK: 1.6.0_24 (32 Bit) IDE: IntelliJ 11.1 App-Server: JBoss 5.1.0 EAP EAR-Building with „maven-ear-plugin“ WAR-Building with Maven „<packaging>war</packaging>“ EJB-Building with Maven „<packaging>ejb</packaging>“ und „maven-ejb-plugin“
EAR看起来像这样：
xxx.ear |___ meta-inf | |___ application.xml (information about EAR,EJB und WEB-Modul configured) | |___ xxxEJB.jar | | | |___ meta-inf | | |___ persistance.xml (JPA 1.0 configuration) | | |___ jboss.xml (JBoss-Config) | | |___ ejb-jar.xml (EJB 3.0 deFinition) | | | |___ country/yyy/xxx/.. (our own compiled classes) | |___ report/.. (JasperReport-Tamplates) | |___ quickfix/.. (QuickFixJ-configuration) | |___ all dependent libraries for our EJB 3.0 project,(74-jar-files) | |___ xxxWAR.war | |___ meta-inf |___ WEB-INF | |___ lib | |___ all dependent libraries for the Servlet-project,(2-jar-files) |___ classes | |___ country/yyy/xxx/.. (our own compiled classes) |___ web.xml (Servlet-configuration)
Stacktrace看起来像这样：
JVM已使用选项：-verbose：class启动,以查看所有类加载操作.
--- SNIP JBoss-Log --- [Loaded country.yyy.xxx.service.issue.util.IssueUtil from file:/C:/Workarea/Projects/xxx-trunk/xxx/target/classes/] [Loaded org.joda.time.DateTimeZone from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] [Loaded org.joda.time.Chronology from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] [Loaded org.joda.time.chrono.BaseChronology from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] [Loaded org.joda.time.DateTimeZone$1 from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] [Loaded org.joda.time.tz.NameProvider from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] [Loaded org.joda.time.JodaTimePermission from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] [Loaded org.joda.time.tz.Provider from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] [Loaded org.joda.time.tz.FixedDateTimeZone from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] [Loaded org.joda.time.tz.ZoneInfoProvider from jar:file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear!/xxxEJB.jar] ERROR - javax.ejb.EJBTransactionRolledbackException: Unexpected Error java.lang.NoClassDefFoundError: org/joda/time/tz/DefaultNameProvider at org.joda.time.DateTimeZone.getDefaultNameProvider(DateTimeZone.java:545) at org.joda.time.DateTimeZone.setNameProvider0(DateTimeZone.java:515) at org.joda.time.DateTimeZone.<clinit>(DateTimeZone.java:116) at country.yyy.xxx.service.issue.util.InitialFixingDateTimeUtil.getHedgingTimestampsForIssue(InitialFixingDateTimeUtil.java:83) at country.yyy.xxx.service.issue.util.InitialFixingDateTimeUtil.getFirstHedgingTimestampForIssue(InitialFixingDateTimeUtil.java:43) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(UnkNown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(UnkNown Source) at java.lang.reflect.Method.invoke(UnkNown Source) --- SNAP JBoss-Log ---
文件“org / joda / time / tz / DefaultNameProvider”肯定在jar文件jar：file：/ C：/ Workarea / Projects / xxx-trunk / xxx-ear / target / xxx.ear！/xxxEJB.jar
建议：
我们感觉Quarz与它有关.因此,当安排了某些事情时,EJB 3.0远程无状态服务.有时会发生错误.
Quartz-Scheduler最初是在Servlet-Context中创建的,但大部分工作正常.
有人有同样的问题吗？
JBoss部署是通过IntelliJ JBoss插件完成的：
是不是,问题是因为我们使用的部署机制？我们使用intelliJ JBoss插件部署应用程序,因此JBoss说：
09:39:21,614 INFO [MainDeployer] deploy,url=file:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear
09:39:33,613 INFO [Ejb3DependenciesDeployer] Encountered deployment AbstractVFSDeploymentContext@2726974{vfszip:/C:/Workarea/Projects/xxx-trunk/xxx-ear/target/xxx.ear/xxxEJB.jar/}
解决方法
这可能是由于二进制内部的jar冲突(xx.ear).
您可以使用以下代码在ear文件夹的lib文件夹中找出jar重复
您可以使用以下代码在ear文件夹的lib文件夹中找出jar重复
公共类JarSearch {
public static final String NL = System.getProperty("line.separator");
public static String directory = new String();
public static File file;
public static Writer output;
public static void main(String args[]) {
/*if (args.length != 2){
System.out.println("You must provide 1. search directory and 2. search string");
System.exit(0);
}*/
JarSearch search = new JarSearch();
try{
String dir = "E://lib";//path of lib folder
directory = dir;
file = new File(directory);
String parentPath = file.getParent();
parentPath += "\\JarSearchResult.txt";
file = new File(parentPath);
//output = new BufferedWriter(new FileWriter(file));
String searchStr = "DES.class";// name of class file to b searched
search.searchDir(dir,searchStr);//"C:\\Program Files\\IBM\\Application Developer\\plugins\\com.ibm.etools.ctc.binding.java\\runtime\\ctcjava.jar");
}catch(IOException ioe){
System.out.println(ioe.toString());
}
}
public static void searchDir(String dirName,String searchStr)throws IOException{
File dir = new File(dirName);
if (!dir.isDirectory()){
throw new IOException(dir+" is not a directory !!!");
}
File files[] = dir.listFiles();
for (int i=0; i<files.length; i++){
if (files[i].isDirectory()){
searchDir(files[i].getAbsolutePath(),searchStr);
}else{
if (files[i].getName().endsWith(".jar")){
searchFile(files[i].getAbsolutePath(),searchStr);
}
}
}
//output.close();
}
public static void searchFile(String fileName,String searchStr)throws IOException{
//System.out.println("File Absolute Path :: " + fileName);
boolean outputMessage = false;
StringBuffer buf = new StringBuffer();
int index1 = fileName.lastIndexOf("\\");
int index2 = fileName.lastIndexOf("/");
//System.out.println(index1 + " :: " + index2 + " ===>>> " + NL);
int index = -1;
if (index1 > index2){
index = index1;
} else {
index = index2;
}
buf.append(NL);
buf.append("DIR: ");
buf.append(fileName.substring(0,index));
buf.append(NL);
buf.append("JAR: ");
buf.append(fileName.substring(index+1));
buf.append(NL);
searchStr = searchStr.toLowerCase();
JarFile jar = new JarFile(fileName);
Enumeration e = jar.entries();
while (e.hasMoreElements()){
JarEntry entry = (JarEntry)e.nextElement();
String strEntry = entry.getName().toLowerCase();
//System.out.println(strEntry);
if (strEntry.indexOf(searchStr) > -1){
outputMessage = true;
buf.append(entry.getName());
buf.append(NL);
}
}
if (outputMessage){
System.out.println(buf);
//output.write(buf.toString());
}
}
}