NullPointerException if in ftp-directory are files with creation date Feb 29
current year (Problem of leap year)
----------------------------------------------------------------------------------------------------------------
Key: NET-224
URL: https://issues.apache.org/jira/browse/NET-224
Project: Commons Net
Issue Type: Bug
Affects Versions: 1.4
Environment: Java 1.5/1.6
Reporter: Alexander
1) Ant code:
<ftp action="get"
server="${ftp.server}"
userid="${ftp.user}"
password="${ftp.password}"
remotedir="${ftp.dir}"
verbose="yes"
depends="yes">
<fileset dir="${lib}">
<include name="*.jar"/>
</fileset>
</ftp>
NullPointerException if in ${ftp.dir} are files with creation date Feb 29
current year
2) Caused:
Incorrect parse creation date Feb 29 current year
For java 1.5/1.6:
Example 1:
SimpleDateFormat sdf = new SimpleDateFormat("MMM d yy");
sdf.setLenient(false);
System.out.println("date=" + sdf.parse("Feb 29 12:14"));
Result:
date=null;
If doesn't use command sdf.setLenient(false) then result: date = Sun Mar 01
12:14:00 EET 1970
For java 1.4:
Result always "date=Sun Mar 01 12:14:00 EET 1970", because for java 1.4
doesn't throw error NullPointerException
3) Sources:
File:
commons-net-1.4.1\src\java\org\apache\commons\net\ftp\parser\FTPTimestampParserImpl.java
Caused in function (line 225: this.recentDateFormat.setLenient(false); ):
public void configure(FTPClientConfig config) {
....
String recentFormatString = config.getRecentDateFormatStr();
if (recentFormatString == null) {
this.recentDateFormat = null;
} else {
this.recentDateFormat = new
SimpleDateFormat(recentFormatString, dfs);
this.recentDateFormat.setLenient(false);
}
....
}
4) StackTrace:
java.lang.NullPointerException
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:115)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
at org.apache.tools.ant.Main.runBuild(Main.java:698)
at org.apache.tools.ant.Main.startAnt(Main.java:199)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
Caused by: java.lang.NullPointerException
at
org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.checkRemoteSensitivity(FTP.java:583)
at
org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.forceRemoteSensitivityCheck(FTP.java:552)
at
org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.scan(FTP.java:231)
at
org.apache.tools.ant.taskdefs.optional.net.FTP.transferFiles(FTP.java:1570)
at
org.apache.tools.ant.taskdefs.optional.net.FTP.transferFiles(FTP.java:1683)
at org.apache.tools.ant.taskdefs.optional.net.FTP.execute(FTP.java:2373)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
... 11 more
--- Nested Exception ---
java.lang.NullPointerException
at
org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.checkRemoteSensitivity(FTP.java:583)
at
org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.forceRemoteSensitivityCheck(FTP.java:552)
at
org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.scan(FTP.java:231)
at
org.apache.tools.ant.taskdefs.optional.net.FTP.transferFiles(FTP.java:1570)
at
org.apache.tools.ant.taskdefs.optional.net.FTP.transferFiles(FTP.java:1683)
at org.apache.tools.ant.taskdefs.optional.net.FTP.execute(FTP.java:2373)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
at org.apache.tools.ant.Main.runBuild(Main.java:698)
at org.apache.tools.ant.Main.startAnt(Main.java:199)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
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