Java - java.lang.NullPointerException
[英]Java - java.lang.NullPointerException
问题描述
我正在尝试将日志系统实现到OSGI包中。 这是捆绑激活器：
import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.Properties;
import org.DX_57.osgi.LS_27.api.LoggingSystem;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.Filter;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
import org.osgi.util.tracker.ServiceTracker;
public class LoggingSystemApp implements BundleActivator {
LoggingSystemImpl log = null;
public ServiceTracker st;
@Override
public void start(final BundleContext bc) throws Exception {
debug("Activator started");
ServiceRegistration registerService = bc.registerService(LoggingSystemImpl.class.getName(), new LoggingSystemImpl() {}, new Properties());
/* Start Logger System */
log = LoggingSystemImpl.getInstance();
log.start();
}
public void stop(BundleContext bc) throws Exception {
boolean ungetService = bc.ungetService(bc.getServiceReference(LoggingSystem.class.getName()));
st.close();
log.stop();
}
private void debug(String msg) {
System.out.println("JDBCBundleActivator: " + msg);
}
}
这是日志记录系统的代码：
import java.io.BufferedWriter;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;
import java.sql.Connection;
import javax.sql.DataSource;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Calendar;
import java.util.Locale;
import org.DX_57.osgi.LS_27.api.LoggingSystem;
public class LoggingSystemImpl implements LoggingSystem {
public LoggingSystemImpl() {
}
private final static Calendar calendar = Calendar.getInstance();
private final static String user = System.getenv("USERNAME").toLowerCase();
private final static String sMonth = calendar.getDisplayName(Calendar.MONTH, Calendar.LONG, Locale.ENGLISH);
private final static int y = calendar.get(Calendar.YEAR);
// the name of the log file
//private final String logName = sysDrive + "\\fttb_web - " + sMonth.toLowerCase() + ", " + y + ".log";
private final String logName = "logger - " + sMonth.toLowerCase() + ", " + y + ".log";
private static boolean closed;
private static LoggingSystemImpl log = null;
private static BufferedWriter bw = null;
private static FileOutputStream fos = null;
private static OutputStreamWriter osw = null;
/* Utilialize Buffer and wait for data to write */
public void start() throws IOException{
log = LoggingSystemImpl.getInstance();
}
public void stop(){
log.close();
}
public void WriteLog(String WriteString){
log.writeln(WriteString);
}
public void LoggingSystemImpl() throws IOException
{
fos = new FileOutputStream(logName, true);
// set encoding to cyrillic (if available)
if (Charset.isSupported("windows-1251"))
{
osw = new OutputStreamWriter(fos, Charset.forName("windows-1251"));
}
else { osw = new OutputStreamWriter(fos); }
bw = new BufferedWriter(osw, 2048); // 2Mb buffer
}
// intro header for log session
public static synchronized LoggingSystemImpl getInstance() throws IOException
{
boolean exc = false;
try
{
if (log == null || closed)
{
log = new LoggingSystemImpl() {};
closed = false;
log.writeln("logged in.");
log.nl();
}
}
// catch(IOException x) { exc = true; throw x; }
catch(Exception x) { exc = true; x.printStackTrace(); }
finally
{
if (exc)
{
try
{
if (fos != null) { fos.close(); fos = null; }
if (osw != null) { osw.close(); fos = null; }
if (bw != null) { bw.close(); bw = null; }
}
catch(Exception x) { x.printStackTrace(); }
}
}
return log;
}
public synchronized void nl()
{
try { bw.newLine(); }
catch(IOException x) {x.printStackTrace();}
}
public synchronized void nl(int count)
{
try
{
for (int i = 0; i < count; i++) bw.newLine();
}
catch(IOException x) {x.printStackTrace();}
}
public synchronized void writeln(String s)
{
try { bw.write(getTime() + ": " + s); bw.newLine(); }
catch(IOException x) {x.printStackTrace();}
}
public synchronized void write(String s)
{
try { bw.write(s); }
catch (IOException x) {x.printStackTrace();}
}
public synchronized void close()
{
try
{
if (bw != null)
{
writeln("logged out.");
nl();
bw.flush();
bw.close();
closed = true;
fos = null;
osw = null;
bw = null;
}
}
catch(IOException x) { x.printStackTrace(); }
}
public synchronized boolean isClosed() { return closed; }
public synchronized void writeException(Exception x)
{
writeln("");
write("\t" + x.toString()); nl();
StackTraceElement[] ste = x.getStackTrace();
int j = 0;
for (int i = 0; i < ste.length; i++)
{
if (i < 15) { write("\t\tat " + ste[i].toString()); nl(); }
else { j++; }
}
if (j > 0) { write("\t\t... " + j + " more"); nl(); }
nl(2);
}
private String getTime()
{
Calendar c = Calendar.getInstance();
int month = c.get(Calendar.MONTH) + 1;
int d = c.get(Calendar.DAY_OF_MONTH);
int h = c.get(Calendar.HOUR_OF_DAY);
int m = c.get(Calendar.MINUTE);
int s = c.get(Calendar.SECOND);
int y = c.get(Calendar.YEAR);
String dd = d < 10 ? "0"+d : ""+d;
String hh = h < 10 ? "0"+h : ""+h;
String mm = m < 10 ? "0"+m : ""+m;
String ss = s < 10 ? "0"+s : ""+s;
String sm = month < 10 ? "0"+month : ""+month;
return user + " [" + y + "." + sm + "." + dd + " " + hh + ":" + mm + ":" + ss + "]";
}
}
这是Java接口：
public interface LoggingSystem {
}
当我尝试在Glassfish服务器上部署代码时，我得到了这个错误堆栈：
[#|2012-03-14T13:20:42.940+0200|INFO|glassfish3.1.2|org.hibernate.validator.util.Version|_ThreadID=50;_ThreadName=Thread-2;|Hibernate Validator 4.2.0.Final|#]
[#|2012-03-14T13:20:44.147+0200|INFO|glassfish3.1.2|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=50;_ThreadName=Thread-2;|WEB0671: Loading application [__admingui] at [/]|#]
[#|2012-03-14T13:20:44.150+0200|INFO|glassfish3.1.2|javax.enterprise.system.core.com.sun.enterprise.v3.server|_ThreadID=50;_ThreadName=Thread-2;|CORE10010: Loading application __admingui done in 12,777 ms|#]
[#|2012-03-14T13:20:44.150+0200|INFO|glassfish3.1.2|javax.enterprise.system.core.com.sun.enterprise.v3.admin.adapter|_ThreadID=50;_ThreadName=Thread-2;|The Admin Console application is loaded.|#]
[#|2012-03-14T13:20:54.222+0200|INFO|glassfish3.1.2|javax.enterprise.system.tools.admin.com.sun.enterprise.container.common|_ThreadID=66;_ThreadName=Thread-2;|User [] from host localhost does not have administration access|#]
[#|2012-03-14T13:21:10.569+0200|INFO|glassfish3.1.2|javax.enterprise.system.container.ejb.com.sun.ejb.containers|_ThreadID=75;_ThreadName=Thread-2;|Created EjbThreadPoolExecutor with thread-core-pool-size 16 thread-max-pool-size 32 thread-keep-alive-seconds 60 thread-queue-capacity 2147483647 allow-core-thread-timeout false |#]
[#|2012-03-14T13:21:12.530+0200|INFO|glassfish3.1.2|com.sun.jersey.server.impl.application.WebApplicationImpl|_ThreadID=75;_ThreadName=Thread-2;|Initiating Jersey application, version 'Jersey: 1.11 12/09/2011 10:27 AM'|#]
[#|2012-03-14T13:21:13.546+0200|INFO|glassfish3.1.2|javax.enterprise.system.tools.admin.org.glassfish.admin.rest.adapter|_ThreadID=75;_ThreadName=Thread-2;|REST00001: Listening to REST requests at context: /management/domain|#]
[#|2012-03-14T13:21:13.587+0200|INFO|glassfish3.1.2|org.glassfish.admingui|_ThreadID=74;_ThreadName=Thread-2;|Redirecting to /common/index.jsf|#]
[#|2012-03-14T13:21:14.133+0200|INFO|glassfish3.1.2|org.glassfish.admingui|_ThreadID=72;_ThreadName=Thread-2;|Admin Console: Initializing Session Attributes...|#]
[#|2012-03-14T13:22:04.476+0200|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=74;_ThreadName=Thread-2;|Stopped LS_27-api [470]|#]
[#|2012-03-14T13:22:04.489+0200|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=74;_ThreadName=Thread-2;|Uninstalled LS_27-api [470]|#]
[#|2012-03-14T13:22:04.878+0200|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=137;_ThreadName=Thread-2;|com.sun.webui.jsf.component.DropDown::The current value of component propertyForm:deployTable:topActionsGroup1:filter does not match any of the selections.
Did you forget to reset the value after changing the options? |#]
[#|2012-03-14T13:22:19.830+0200|WARNING|glassfish3.1.2|org.apache.catalina.connector.Request|_ThreadID=135;_ThreadName=Thread-2;|PWC4011: Unable to set request character encoding to UTF-8 from context , because request parameters have already been read, or ServletRequest.getReader() has already been called|#]
[#|2012-03-14T13:22:19.968+0200|INFO|glassfish3.1.2|org.glassfish.admingui|_ThreadID=135;_ThreadName=Thread-2;|GUI deployment: uploadToTempfile|#]
[#|2012-03-14T13:22:19.995+0200|INFO|glassfish3.1.2|org.glassfish.admingui|_ThreadID=135;_ThreadName=Thread-2;|uploadFileName=LS_27-api-1.0-SNAPSHOT.jar|#]
[#|2012-03-14T13:22:20.081+0200|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=302;_ThreadName=Thread-2;|Installed LS_27-api [472] from reference:file:/opt/glassfish3/glassfish/domains/domain1/applications/LS_27-api-1.0-SNAPSHOT/|#]
[#|2012-03-14T13:22:20.090+0200|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=302;_ThreadName=Thread-2;|Started LS_27-api [472]|#]
[#|2012-03-14T13:22:20.128+0200|INFO|glassfish3.1.2|javax.enterprise.system.tools.admin.org.glassfish.deployment.admin|_ThreadID=302;_ThreadName=Thread-2;|LS_27-api-1.0-SNAPSHOT was successfully deployed in 115 milliseconds.|#]
[#|2012-03-14T13:22:33.840+0200|WARNING|glassfish3.1.2|org.apache.catalina.connector.Request|_ThreadID=313;_ThreadName=Thread-2;|PWC4011: Unable to set request character encoding to UTF-8 from context , because request parameters have already been read, or ServletRequest.getReader() has already been called|#]
[#|2012-03-14T13:22:33.962+0200|INFO|glassfish3.1.2|org.glassfish.admingui|_ThreadID=313;_ThreadName=Thread-2;|GUI deployment: uploadToTempfile|#]
[#|2012-03-14T13:22:33.963+0200|INFO|glassfish3.1.2|org.glassfish.admingui|_ThreadID=313;_ThreadName=Thread-2;|uploadFileName=LS_27-impl-1.0-SNAPSHOT.jar|#]
[#|2012-03-14T13:22:34.043+0200|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=311;_ThreadName=Thread-2;|Installed LS_27-impl [473] from reference:file:/opt/glassfish3/glassfish/domains/domain1/applications/LS_27-impl-1.0-SNAPSHOT/|#]
[#|2012-03-14T13:22:34.046+0200|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=311;_ThreadName=Thread-2;|JDBCBundleActivator: Activator started|#]
[#|2012-03-14T13:22:34.050+0200|SEVERE|glassfish3.1.2|javax.enterprise.system.tools.admin.org.glassfish.deployment.admin|_ThreadID=311;_ThreadName=Thread-2;|Exception while invoking class org.glassfish.extras.osgicontainer.OSGiDeployedBundle start method
java.lang.RuntimeException: org.osgi.framework.BundleException: Activator start error in bundle LS_27-impl [473].
at org.glassfish.extras.osgicontainer.OSGiDeployedBundle.startBundle(OSGiDeployedBundle.java:110)
at org.glassfish.extras.osgicontainer.OSGiDeployedBundle.resume(OSGiDeployedBundle.java:83)
at org.glassfish.extras.osgicontainer.OSGiDeployedBundle.start(OSGiDeployedBundle.java:67)
at org.glassfish.internal.data.EngineRef.start(EngineRef.java:130)
at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:269)
at org.glassfish.internal.data.ApplicationInfo.start(ApplicationInfo.java:301)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:461)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:391)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:348)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:363)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1085)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:95)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1291)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1259)
at org.glassfish.admin.rest.ResourceUtil.runCommand(ResourceUtil.java:214)
at org.glassfish.admin.rest.ResourceUtil.runCommand(ResourceUtil.java:207)
at org.glassfish.admin.rest.resources.TemplateListOfResource.createResource(TemplateListOfResource.java:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:134)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:134)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
at com.sun.jersey.server.impl.container.grizzly.GrizzlyContainer._service(GrizzlyContainer.java:182)
at com.sun.jersey.server.impl.container.grizzly.GrizzlyContainer.service(GrizzlyContainer.java:147)
at org.glassfish.admin.rest.adapter.RestAdapter.service(RestAdapter.java:148)
at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:179)
at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117)
at com.sun.enterprise.v3.services.impl.ContainerMapper$Hk2DispatcherCallable.call(ContainerMapper.java:354)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.osgi.framework.BundleException: Activator start error in bundle LS_27-impl [473].
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2027)
at org.apache.felix.framework.Felix.startBundle(Felix.java:1895)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:944)
at org.glassfish.extras.osgicontainer.OSGiDeployedBundle.startBundle(OSGiDeployedBundle.java:107)
... 56 more
Caused by: java.lang.ExceptionInInitializerError
at org.DX_57.osgi.LS_27.impl.LoggingSystemApp.start(LoggingSystemApp.java:38)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:641)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:1977)
... 59 more
Caused by: java.lang.NullPointerException
at org.DX_57.osgi.LS_27.impl.LoggingSystemImpl.<clinit>(LoggingSystemImpl.java:41)
... 62 more
|#]
[#|2012-03-14T13:22:34.072+0200|SEVERE|glassfish3.1.2|javax.enterprise.system.core.com.sun.enterprise.v3.server|_ThreadID=311;_ThreadName=Thread-2;|Exception while loading the app|#]
[#|2012-03-14T13:22:34.077+0200|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=311;_ThreadName=Thread-2;|Uninstalled LS_27-impl [473]|#]
[#|2012-03-14T13:22:34.080+0200|SEVERE|glassfish3.1.2|javax.enterprise.system.tools.admin.org.glassfish.deployment.admin|_ThreadID=311;_ThreadName=Thread-2;|Exception while loading the app : org.osgi.framework.BundleException: Activator start error in bundle LS_27-impl [473].
org.osgi.framework.BundleException: Activator start error in bundle LS_27-impl [473].
at org.apache.felix.framework.Felix.activateBundle(Felix.java:2027)
at org.apache.felix.framework.Felix.startBundle(Felix.java:1895)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:944)
at org.glassfish.extras.osgicontainer.OSGiDeployedBundle.startBundle(OSGiDeployedBundle.java:107)
at org.glassfish.extras.osgicontainer.OSGiDeployedBundle.resume(OSGiDeployedBundle.java:83)
at org.glassfish.extras.osgicontainer.OSGiDeployedBundle.start(OSGiDeployedBundle.java:67)
at org.glassfish.internal.data.EngineRef.start(EngineRef.java:130)
at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:269)
at org.glassfish.internal.data.ApplicationInfo.start(ApplicationInfo.java:301)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:461)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:391)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:348)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:363)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1085)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:95)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1291)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1259)
at org.glassfish.admin.rest.ResourceUtil.runCommand(ResourceUtil.java:214)
at org.glassfish.admin.rest.ResourceUtil.runCommand(ResourceUtil.java:207)
at org.glassfish.admin.rest.resources.TemplateListOfResource.createResource(TemplateListOfResource.java:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:134)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:134)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
at com.sun.jersey.server.impl.container.grizzly.GrizzlyContainer._service(GrizzlyContainer.java:182)
at com.sun.jersey.server.impl.container.grizzly.GrizzlyContainer.service(GrizzlyContainer.java:147)
at org.glassfish.admin.rest.adapter.RestAdapter.service(RestAdapter.java:148)
at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:179)
at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117)
at com.sun.enterprise.v3.services.impl.ContainerMapper$Hk2DispatcherCallable.call(ContainerMapper.java:354)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ExceptionInInitializerError
at org.DX_57.osgi.LS_27.impl.LoggingSystemApp.start(LoggingSystemApp.java:38)
at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:641)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:1977)
... 59 more
Caused by: java.lang.NullPointerException
at org.DX_57.osgi.LS_27.impl.LoggingSystemImpl.<clinit>(LoggingSystemImpl.java:41)
... 62 more
|#]
[#|2012-03-14T13:22:34.084+0200|INFO|glassfish3.1.2|org.glassfish.admingui|_ThreadID=313;_ThreadName=Thread-2;|Exception Occurred :Error occurred during deployment: Exception while loading the app : org.osgi.framework.BundleException: Activator start error in bundle LS_27-impl [473].. Please see server.log for more details.|#]
我在捆绑激活器中有一个错误，我找不到。 我想实现日志包，它将错误消息写入文本文件。 部署捆绑包时，捆绑包必须打开文本文件并侦听来自其必须记录到文件中的其他OSGI捆绑包的消息。
祝彼得好
1 个解决方案
解决方案1
8 已采纳 2012-03-14 11:47:53
看起来异常是在类初始化时抛出的（正如堆栈跟踪指向的at ... LoggingSystemImpl.<clinit> ）。 当类静态字段初始化阶段出现错误时，通常会抛出此异常。
检查你的LoggingSystemImpl类代码，在字段声明中找到：
private final static String user = System.getenv("USERNAME").toLowerCase();
如果系统找不到此环境值，它将返回null （ 引用 ），因此，对null引用的toLowerCase调用将抛出NullPointerException 。
您是否检查过环境属性"USERNAME"是否可用？
java.lang.NullPointerException
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