maven项目中的库项目中的ClassNotFoundException

Question

In my maven Project in eclipse, I have added a normal Java- Project as a Library project (with Java- Build Path). This worked fine until I wrote a method in this Library project that makes use of org.apache.commons.codec.digest.DigestUtils . I added this external library both with an "external jar" in the java buildpath properties of the library project and as a maven dependency:

<dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
    <version>1.4</version>
</dependency>

in eclipse both projects show no errors, but when run it gives me an ClassNotFoundException in the library project (btw. if I use the exact same line of code in the source of the maven project, it works just fine)

The maven project runs on a tomcat7-server.

Now my question is: how can I fix this? The Library project is used by other projects as well, so just copying the code into the Maven project would be a less favored solution.

Thanks in advance!

Answer 1

您需要在WEB-INF / lib文件夹中而不是在构建路径上使用此库（通用编解码器）。