Gradle Dependency error while implementing LDAP Authentication using Spring Security

Question

I am getting the below two errors even after having the below dependencies in build.gradle :

compile group: 'org.springframework.ldap', name: 'spring-ldap-core', version: '2.3.1.RELEASE'
compile group: 'org.springframework.security', name: 'spring-security-ldap', version: '4.0.4.RELEASE'

Caused by: java.lang.ClassNotFoundException: org.springframework.ldap.core.ContextSource at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 26 common frames omitted

or

Caused by: java.lang.ClassNotFoundException: org.springframework.security.ldap.search.LdapUserSearch at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 26 common frames omitted

Can you please help me with this error , is there a versioning conflict between the dependencies here ?

MuratOzkan · Accepted Answer · 2018-05-23 08:09:34Z

1

This indeed looks like a versioning conflict. According to MVNRepository, spring-security-ldap 4.0.4.RELEASE depends on spring-ldap-core 2.0.2.RELEASE version.

I think you can safely remove the dependency for spring-ldap-core and see that resolves your problem.

While you're at it, you may think about upgrading to a later version too.

answered May 23, 2018 at 8:09

MuratOzkan

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3 Comments

Jayesh Mulwani Over a year ago

Hi MuratOzkan, I removed the "spring-ldap-core" dependency as suggested and i still receive an error "Caused by: java.lang.ClassNotFoundException: org.springframework.security.ldap.search.LdapUserSearch"

MuratOzkan Over a year ago

What other dependencies you have?

Jayesh Mulwani Over a year ago

MuratOzkan , The dependencies provided above were of the parent build.gradle , there are numerous other dependencies in the child module. I just added the above dependency to the child module build.gradle and it worked fine , thanks.

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