Question

我有一个看起来像这样的JSP

<%
Class.forName("com.mysql.jdbc.Driver"); 
java.sql.Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root"); 

Statement st= con.createStatement(); 

ResultSet rs=st.executeQuery("select * from example");
.
.
.
%>

当我请求jsp时，我收到此错误：

HTTP状态500 -

输入例外报告

消息

description服务器遇到内部错误（），导致无法完成此请求。

例外

org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
javax.servlet.ServletException: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:911)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:840)
org.apache.jsp.test_jsp._jspService(test_jsp.java:95)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1701)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1546)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:126)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:186)
org.apache.jsp.test_jsp._jspService(test_jsp.java:69)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

注意Apache Tomcat / 7。0。26日志中提供了根本原因的完整堆栈跟踪。

Answer 1

只需将 mysql-connector-java-5.1.13-bin.jar 文件放在tomcat的webapps目录中的 WEB-INF / lib 文件中。

Answer 2

将mysql mysql-connector-java-5.1.13-bin jar添加到您的类路径中。

尝试使用jsp连接mysql时获取ClassNotFoundException

2 个答案: