I have an AuthorizationServlet which is called when user click button in login page. Here is a piece of code of servlet’s doPost method:
AuthorizationBean bean = new AuthorizationBean();
String login = (String) request.getSession().getAttribute("login");
String password = (String) request.getSession().getAttribute("password");
try {
UserType type = bean.getRoleOfUser(login, password);
switch(type) {
...
}
} catch (DaoException ex) {
throw new ServletException(ex.getMessage());
}
I have omited some code, because it is doesn’t apply the problem. Actually, DaoException can be thrown only in this line UserType type = bean.getRoleOfUser(login, password);
In method getRoleOfUser I do the connection to the database using tomcat’s connection pool(Description of how I get the connection is in the first post here)
Also here is my context.xml which creates the resource of db connection:
<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/Project">
<Resource name="jdbc/Project" auth="Container"
type="javax.sql.DataSource" maxActive="100"
maxIdle="30" maxWait="10000"
username="name"
password="password"
driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@127.0.0.1:1521:XE"/>
</Context>
When the AuthorizationServlet is called I get such error:
javax.servlet.ServletException: Error instantiating servlet class com.tspp.common.AuthorizationServlet
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
java.lang.Thread.run(Thread.java:662)
root cause
java.lang.NoClassDefFoundError: com/tspp/dao/exceptions/DaoException
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
java.lang.Class.getConstructor0(Class.java:2699)
java.lang.Class.newInstance0(Class.java:326)
java.lang.Class.newInstance(Class.java:308)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
java.lang.Thread.run(Thread.java:662)
root cause
java.lang.ClassNotFoundException: com.tspp.dao.exceptions.DaoException
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
java.lang.Class.getConstructor0(Class.java:2699)
java.lang.Class.newInstance0(Class.java:326)
java.lang.Class.newInstance(Class.java:308)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
java.lang.Thread.run(Thread.java:662)
I have tried to debug it, but the debugger even didn’t get to the servlets doPost method.
Actually last 2 exceptions are thrown when I start the program(before the servlet activation)
How can I solve this problem?
Make sure you have all your classes in
WEB-INF/classes