求大神看看这个错怎么解决？？

[za664322563]

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/codec/DecoderException
at org.apache.commons.httpclient.HttpMethodBase.<init>(HttpMethodBase.java:220)
at org.apache.commons.httpclient.methods.ExpectContinueMethod.<init>(ExpectContinueMethod.java:93)
at org.apache.commons.httpclient.methods.EntityEnclosingMethod.<init>(EntityEnclosingMethod.java:119)
at org.apache.commons.httpclient.methods.PostMethod.<init>(PostMethod.java:106)
at com.jdsy.util.NetUtil.getTest(NetUtil.java:15)
at com.jdsy.util.NetUtil.main(NetUtil.java:33)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.codec.DecoderException
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
... 6 more

[xihui912]

org/apache/commons/codec/DecoderException 这个类没找到，包引用了吗

[za664322563]

@xihui912 是commons-logging-1.1.jar这个么？

[za664322563]

是缺少commons-codec-1.3.jar这个包 谢谢你啦 @xihui912

[lwien]

应该是包类没有找到，第一行错误！