麻烦各位高手帮我看一下,我的tomcat6.0测试通过是可以用的,在webapps下建立了myWebSite站点,WEB-INF里的classes和lib也建好了,但是就是无法运行servlet,服务器开启时没有显示打开这个myWebSite的web.xml,还出现了以下的错误,我在网上找了很久,也没有可行的答案,麻烦有经验的高手,帮帮忙,谢谢!HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: Error instantiating servlet class com.yoin.Hello
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Unknown Source)
root cause java.lang.IllegalAccessException: Class org.apache.catalina.core.StandardWrapper can not access a member of class com.yoin.Hello with modifiers ""
sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
java.lang.Class.newInstance0(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Unknown Source)
root cause java.lang.IllegalAccessException: Class org.apache.catalina.core.StandardWrapper can not access a member of class com.yoin.Hello with modifiers ""
sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
java.lang.Class.newInstance0(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
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说明:class com.yoin.Hello这个servlet 类没有instantiating化。
Class org.apache.catalina.core.StandardWrapper can not access a member of class com.yoin.Hello with modifiers
你的tomcat6下的classes下有编译后的class文件吗?
//localhost:8080打开后,可以看到那个cat的图标吗?
package com.yoin;import javax.servlet.http.*;
import java.io.*;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.*;public class LoginCl extends HttpServlet{
public void doGet(HttpServletRequest req, HttpServletResponse res) {
Connection ct = null;
Statement sm = null;
ResultSet rs = null;
try {
String name = req.getParameter("username");
String pow = req.getParameter("passwd");
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
ct= DriverManager.getConnection("jdbc:Microsoft:sqlserver://127.0.0.1:1433:databaseName=spdb","sa","");
sm = ct.createStatement();
rs = sm.executeQuery("select top 1 from users where username='" +name+ "' and passwd='"+pow+ "'");
if(rs.next()){
HttpSession hs = req.getSession(true);
hs.setMaxInactiveInterval(60);
hs.setAttribute("name",name);
res.sendRedirect("wel");
}
else {
res.sendRedirect("login");
}
}catch (Exception e) {
e.printStackTrace();
} finally {
try {
if(ct !=null){
ct.close();
}
if(sm !=null) {
sm.close();
}
if(rs !=null) {
rs.close();
}
}catch(SQLException e) {
e.printStackTrace();
}
}
}
public void doPost(HttpServletRequest req, HttpServletResponse res) {
this.doGet(req,res);
}
}
不知道是不是SQL的用户原因导致的,我登陆的是sa用户,密码为空(网上说SQL会自己更改用户??)请高手指教,谢谢~~