Context.xml configuration for database connetion in struts

Question

here is the content of context.xml
<Context antiJARLocking="true" path="/WebApplication5">
    <!-- Specify a JDBC datasource -->
    <Resource name="jdbc/aaa"
              auth="Container"
              type="javax.sql.DataSource"
              username="campus"
              password="camp123"
              driverClassName="com.mysql.jdbc.Driver"
              url="jdbc:mysql://192.168.0.226:3306/training"/>
</Context>here is the usage
public boolean query(empform f)throws NamingException,SQLException {
        //Connection conn=null;
//        String url = "jdbc:mysql://192.168.0.226:3306/";
//        String dbname = "training";
//Connection c=null;
        ResultSet rs = null;
        System.out.println("resultset out of try");
        try {
            // Get DataSource
            System.out.println("resultset 1");
            Context ctx = new InitialContext();
            System.out.println("resultset2 ");
            DataSource ds = (DataSource) ctx.lookup("java:comp/env/jdbc/aaa");
// Get Connection and Statement
            System.out.println(ds);
            Connection c = ds.getConnection();
            System.out.println("resultset4");
//                 Class.forName("com.mysql.jdbc.Driver");
//                 conn = DriverManager.getConnection(url+dbname,"campus","camp123");
            PreparedStatement ps;
            String query = "select * from loginemp where username=? and password=?";
            ps = c.prepareStatement(query);
            ps.setString(1, f.getUsername());
            ps.setString(2, f.getPassword());
            rs = ps.executeQuery();
            System.out.println("resultset" + rs);
           if(rs.next()) {
               System.out.println(rs.getString("username"));
               return true;
           else
               return false;
        } catch (Exception e) {
            // conn.close();
            System.out.println("in catch of login dao" + e);
        return false;
    }Im getting error
resultset out of try
resultset 1
resultset2
org.apache.tomcat.dbcp.dbcp.BasicDataSource@a5c9f1
in catch of login dao
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1136)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
at com.myapp.struts.LoginDao.query(LoginDao.java:40)
at com.myapp.struts.Business.login(Business.java:20)
at com.myapp.struts.empAction.execute(empAction.java:25)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
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:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1130)
... 25 more
can anyone help...

Answer 1

Bhararrajverma wrote:
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'Looks like it can't find the JDBC driver. The MySQL JDBC driver jar must be available either in your web app or in the shared tomcat library directory. Is it there?