java.lang.NoClassDefFoundError: org/apache/commons/dbutils/DbUtils

用dbutils串連的時候出現這個問題

HTTP Status 500 -type Exception reportmessagedescription The server encountered an internal error () that prevented it from fulfilling this request.exceptionjavax.servlet.ServletException: Servlet execution threw an exceptionroot causejava.lang.NoClassDefFoundError: org/apache/commons/dbutils/QueryRunnercom.xxx.blog.BlogServlet.doPost(BlogServlet.java:65)javax.servlet.http.HttpServlet.service(HttpServlet.java:637)javax.servlet.http.HttpServlet.service(HttpServlet.java:717)root causejava.lang.ClassNotFoundException: org.apache.commons.dbutils.QueryRunnerorg.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)com.afoa.blog.BlogServlet.doPost(BlogServlet.java:65)javax.servlet.http.HttpServlet.service(HttpServlet.java:637)javax.servlet.http.HttpServlet.service(HttpServlet.java:717)note The full stack trace of the root cause is available in the Apache Tomcat/6.0.32 logs

一般都是因為項目中匯入了dbutils的包，但是tomcat6.0的lib中沒有匯入dbutils的包引起的。注意tomcat需要重啟一下的