archive for required library could not be read or is not a valid ZIP file

Question

Before coming to the problem let me explain what I did that has landed me in the problem.

I created an account on github and made a repository named Android.
Then I installed github client in my windows 7.
Then I opened this client, provided my authentication and cloned the repository to a local directory C:\Users\Aniket\Documents\GitHub\Android(This folder has the .git folder in it).
Then I went to my Eclipse ADT and installed EGit plugin as described here. Also I
Then in Eclipse I right click on my project TicTacToe go to Team->Share Project and provide my repository path i.e C:\Users\Aniket\Documents\GitHub\Android.
My Project was added to the local repository and in my github client it shows me all option to commit file in the actual repository on the github site.
But my project is suddenly showing error with a red '!' sign on it.

Description --> Archive for required library: 'C:/Users/Aniket/AndroidWorkspace/TicTacToe /libs/android-support-v4.jar' in project 'TicTacToe' cannot be read or is not a valid ZIP file

Resource --> TicTacToe

Path Location --> Build path

Type --> Build Path Problem

Note : the Error was a single line displayed in error console on Eclipse. I just split it up for readability.

Even after detaching repository it shows that error.

Has anyone encountered this scenario before. What is the solution or workaround? I googled and first few links suggest it is an Eclipse bug. Please suggest what can be done to bring my project back to executable state?

In my case, the problem was that the library did not have the appropriate permissions, and Eclipse couldn't read it. — crico_aven, Jan 20 '16 at 10:30

rachit · Accepted Answer · 2018-07-21T11:19:09.657

49

It is an Eclipse bug. I have faced the similar problem several times. closing and reopening the project works sometime. if it doesn't work try restarting Eclipse.

edited Jul 21 '18 at 11:19

answered Oct 22 '13 at 19:03

rachit

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Yeah I researched it a bit and yes it an Eclipse bug. Restarting Eclipse worked for me. Tx! – Aniket Thakur Nov 22 '13 at 06:52
@AniketThakur, please provide a link or two. – Basilevs Nov 18 '14 at 12:33
@Basilevs For starters take a looks at https://bugs.eclipse.org/bugs/show_bug.cgi?id=375249 – Aniket Thakur Nov 18 '14 at 14:26
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Can confirm this - did a clean and build and it worked – Magic-Mouse Mar 24 '16 at 21:54
Close project, reopen, clean all projects and it worked! – detoro84 Jul 06 '16 at 14:36

score 22 · Answer 2 · answered Dec 03 '13 at 19:35

22

I've seen the same issue. I removed that jar file, and then rightclick on the project, select maven, and do "update project...". The jar was downloaded again, and the problem was gone.

answered Dec 03 '13 at 19:35

volatilevar

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After a lot of tries, found an answer that worked. Thank you! – falsarella May 21 '15 at 20:35
It helped me, I just removed this jar, and then I saw new file dowloaded with another size...very weird... – Leo Apr 19 '17 at 04:31
I deleted the jar folder itself. Then, tried this answer and it worked. – MasterJoe Dec 28 '18 at 00:13

Sandeep P · Answer 3 · 2014-04-15T05:55:58.647

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There is other case to display error Archive for required library

Right click on project and open --> project project properties --> java build path --> Android private libs

if there are two jar files with same name then remove one from libs.

jar file may the hidden some times then open you libs folder in window and check if any hidden files are exist Organize --> folders and search options --> view --> check show hidden files and Delete the hidden jar file , The same cass delete if hidden java fies exist in src and packages if any

edited Apr 15 '14 at 05:55

answered Nov 22 '13 at 07:09

Sandeep P

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this was the cause of my problem. The mac I was working on before has created hidden files of each and every file in the project. Thank you. – Mohamed Haseel Mar 25 '14 at 10:52
this pointed me in the right direction for a similar problem. Thanks! – Dave Apr 14 '14 at 22:07

score 6 · Answer 4 · answered Feb 29 '16 at 23:39

6

Looks like everyone has different story to tell! For me, I had to delete the error from eclipse Markers tab, and then cleaned the project again. Before that, I closed and re-opened the project/eclipse several times as suggested by @rachit, which did not work for me.

answered Feb 29 '16 at 23:39

Mashrur

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Thank you! This is the only solution that worked for me as well. Also tried cleaning, reopening eclipse and downloading the jar again, but nothing worked. – AlexanderF Aug 16 '17 at 09:05
thank you very very much. This is the only solution that worked for me too. Too many time was wasted for me in solving this. Do you have any idea why this happens? – Nasif Imtiaz Ohi Sep 24 '17 at 19:49
Same for me. Hmmm got an error message? Just delete it and it will be solved :) LOL – j_kubik Sep 26 '17 at 20:12
Thanks! After trying few other options, this one finally worked for me. – emecheon Oct 09 '17 at 15:26

score 1 · Answer 5 · answered Jun 04 '14 at 07:13

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In my case, i'd downloaded project from internet, after unzipping project some files had been blocked, just unblock files and try again, then problem was solved.

answered Jun 04 '14 at 07:13

lomec

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score 1 · Answer 6 · answered Jun 08 '14 at 11:53

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In my case I tried all the tips suggested but the error remained. I solved changing version with a more recent one and writing that in the pom.xml. After this everything is now ok.

answered Jun 08 '14 at 11:53

enri

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score 1 · Answer 7 · edited Sep 12 '14 at 11:53

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In my case restarting Eclipse did not solve the problem. I restarted the computer and did a Project -> Clean in eclipse

edited Sep 12 '14 at 11:53

avalancha

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answered Sep 03 '14 at 10:45

mboeckle

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score 1 · Answer 8 · answered Feb 14 '16 at 12:20

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A solution that worked for me: go to *.classpath and delete the line : <classpathentry kind="lib" path="the_problematic_class.java"/>

answered Feb 14 '16 at 12:20

BVtp

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score 1 · Answer 9 · answered May 19 '16 at 06:51

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Could be due to corrupted jar files as well. Better to check that first as that was the reason in my case:

 jar tf myjar.jar

should list the content inside.

answered May 19 '16 at 06:51

samsamara

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score 1 · Answer 10 · answered Dec 19 '16 at 07:46

i was facing same problem in Eclipse Mars. I downloaded the jars from [https://oss.jfrog.org/webapp/#/artifacts/browse/tree/General/repo/org/ethereum/ethereumj-core/1.0.0-SNAPSHOT][1] and replaced it in the directory.

I got error while adding ethereum.jar using pom.xml at C:\Users{machineName}.m2\repository\org\ethereum\ethereumj-core\1.0.0-SNAPSHOT\ethereum-core-1.0.0-SNAPSHOT.jar , i added the downloaded jar(ethereum-core-1.0.0-SNAPSHOT.jar) here and the problem was solved.

score 1 · Answer 11 · answered Jan 29 '18 at 17:36

I will say that it can be that some answers work for some cases, but for me it was necessary to go an extra mile. So I will try to make a summary of what can be done:

Verify that the jars are intact:

jar tf myjar.jar
Restart eclipse and update projects setting over right click on project -> Maven -> Update project
The option which has work for me was to navigate in the workspace folder and then delete the files:

.metadata/.plugins/org.eclipse.jdt.core/invalidArchivesCache .metadata/.plugins/org.eclipse.jdt.core/nonChainingJarsCache

After that restart eclipse and rebuild project.

score 0 · Answer 12 · answered Aug 21 '14 at 06:34

I found no duplicates anywhere and tried restarting eclipse, rebuild project. I was getting error for only one libary. So I just tried to rename the jar file from ksoap2-android-assembly-2.5.8-jar-with-dependencies.jar to ksoap2-2.5.8.jar

So if none of the problems solves from above you can also try this one

score 0 · Answer 13 · answered May 20 '16 at 04:59

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In my case, the java installation was not proper. So, I uninstalled Java and reinstalled a new version. Now, it works.

answered May 20 '16 at 04:59

ChandrasekarG

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score 0 · Answer 14 · edited Jun 20 '20 at 09:12

For us, the problem seemed to be the size of the .jar file. I would recommend doing the following test to see whether this is the case or at least rule it out. First have a look at other jars in your Eclipse project and compare them to the problemetic jar. Is it a lot bigger than the others? If so, try the following workaround. Else, this answer probably won't help you. Before starting, configure Windows to treat .jar files as .zip files with the following command line command:

assoc .jar=CompressedFolder (see https://superuser.com/questions/121540/can-you-configure-windows-to-open-jar-files-like-zip-files-without-a-3rd-party-t)

Optional: A simple Test

Before trying the workaround, here is a test to see if it is indeed the jar file size that's tripping you up.

Create a large .jar full of random .class files that aren't in your problematic jar. You can do this by making a folder full of files, zipping it, and renaming the .zip extension to a .jar. Windows might warn you about changing the extension. Ignore this. Make sure you have enough files in the folder so that it's a bit larger than the problematic jar.
Try to import this artificially created jar. If it fails with the same error, then size is probably the issue.

The Workaround

If it is indeed size that's the problem, which you might have identified by doing the optional simple test above, you can try the following workaround.

Decompress your .jar file. You should be able to do this easily in Windows
Split the folder you get from step 1 into smaller sub-folders. It could be just two folders, or more, depending on how big the original is. You want the folders to be smaller than some of your existing "good" jars so that size won't be an issue. Make sure to keep the package structure intact when you're doing this.
Zip up all the folders you created in step 2, and rename the .zip to .jar.
Import all of the .jars from step 3 individually.

The steps might be a bit unclear, so here's an example. Imagine your jar file was called mylib.jar. You unzip this to a folder called mylib. Inside, let's say there are three sub-folders called package1, package2 and package3. Create 3 folders called mylib1, mylib2 and mylib3, and put in package1, package2 and package3 respectively. Then zip these up and rename extension to .jar. You'll then be importing mylib1.jar, mylib2.jar and mylib3.jar.

score 0 · Answer 15 · answered Sep 22 '17 at 10:23

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For Java web application, web.xml added as jar in the project. In project explorer, try to find web.xml as in jar icon and remove from the project. Error will go away!!

answered Sep 22 '17 at 10:23

Yogi

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score 0 · Answer 16 · answered Jul 13 '18 at 09:45

I was stacked on this problem for days despite searching for a solution on the net. I first moved my project to Netbeans and all worked fine. I then returned to eclipse->properties->java compile-> Building and changed "Incompartible build path" option from error to warning and then did maven update and it worked.

score 0 · Answer 17 · answered Aug 14 '20 at 19:44

I realize this is an old question, but I have yet another solution if none of these work for other people coming across this thread. I had this same problem, and spent alot of time trying to figure it out, only to find that my Eclipse classpath/buildpath has a .json file in it, it doesn't like that, so it wouldn't compile. So, check to make sure no text files or json files, etc are in your build path.

score 0 · Answer 18 · answered Sep 03 '20 at 13:20

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I had accidentally put the web.xml into the build path :x

answered Sep 03 '20 at 13:20

Micha Herrmann

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archive for required library could not be read or is not a valid ZIP file

18 Answers18

Optional: A simple Test

The Workaround

Linked