java lang NoSuchMethodError org apache commons codec binary Base64 encodeBase64String in Java EE application

Question

I am developing a Java EE application in which I need Base64 Encoding Decoding  So I added commons-codec-1 5 jar in WEB-INF lib folder of my application and used   import org apache commons codec binary Base64    in the Java file   During compile time  when I type Base64  it shows encodeBase64String method is available  But during runtime it is throwing an exception like this   java lang NoSuchMethodError org apache commons codec binary Base64 encodeBase64String   I have the JAR in the buildpath  but still I don t understand why it throws me the above error

User · Accepted Answer

That method was introduced in Commons Codec 1.4. This exception indicates that you've an older version of Commons Codec somewhere else in the webapp's runtime classpath which got precedence in classloading. Check all paths covered by the webapp's runtime classpath. This includes among others the Webapp/WEB-INF/lib, YourAppServer/lib, JRE/lib and JRE/lib/ext. Finally remove or upgrade the offending older version.

Update: as per the comments, you can't seem to locate it. I can only suggest to outcomment the code using that newer method and then put the following line in place:

System.out.println(Base64.class.getProtectionDomain().getCodeSource().getLocation());

That should print the absolute path to the JAR file where it was been loaded from during runtime.

Update 2: this did seem to point to the right file. Sorry, I can't explain your problem anymore right now. All I can suggest is to use a different Base64 method like encodeBase64(byte[]) and then just construct a new String(bytes) yourself. Or you could drop that library and use a different Base64 encoder, for example this one.

User · Answer

Download  this jar  It resolved my problem  this is 1 7

User · Answer

Some Google tooling such as GWT has an embedded version of commons-codec with a pre-1 4 Base64 class  You may need to make such tooling JARs inaccessible to your code by refactoring your project such that only the parts of your code that need that tooling can see the dependency

User · Answer

Try add  commons-codec-1 8 jar  into your JRE folder

User · Answer

Simply create an object of Base64 and use it to encode or decode  when using org apache commons codec binary Base64 library To Encode  Base64 ed new Base64    String encoded new String ed encode  quot Hello quot  getBytes       Replace  quot Hello quot  with the text to be encoded in String Format  To Decode  Base64 ed new Base64    String decoded new String ed decode encoded getBytes       Here encoded is the String variable to be decoded

User · Answer

Adam Augusta is right  One more thing   Apache-HTTP client jars also comes in same category as some google-apis   org apache httpcomponents httpclient 4 2 jar and commons-codec-1 4 jar both on classpath  This is very possible that you will get this problem   This prove to all jars which are using early version of common-codec internally and at the same time someone using common-codec explicitly on classpath too

User · Answer

You need the Apache Commons Codec library 1 4 or above in your classpath  This library contains Base64 implementation

User · Answer

I faced the same problem with JBoss 4 2 3 GA when deploying my web application  I solved the issue by copying my commons-codec 1 6 jar into C  jboss-4 2 3 GA server default lib

[java] java.lang.NoSuchMethodError: org.apache.commons.codec.binary.Base64.encodeBase64String() in Java EE application

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