I just tried again, and can't reproduce this. I launched Eclipse with the Google Plugin for Eclipse 1.6.4.
Created a new webapp, modified the servlet class as follows, and no exeption.
package webtest;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.*;
import com.google.appengine.api.rdbms.AppEngineDriver;
@SuppressWarnings("serial")
public class WebTestServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException {
resp.setContentType("text/plain");
try {
PrintWriter out = resp.getWriter();
DriverManager.registerDriver(new AppEngineDriver());
out.println("Hello World");
} catch (IOException e) {
throw new ServletException(e);
} catch (SQLException e) {
throw new ServletException(e);
}
}
}
You should start with the simplest example w/o adding any additional libraries, etc and see where things stop working for you.
Rob
On Sat, Apr 28, 2012 at 10:28 AM, NASIR <nasir031@gmail.com> wrote:
Is there anyone who will answer this exception....?
where have been google cloud sql developers gone....?
> xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
On Apr 22, 4:47 pm, NASIR <nasir...@gmail.com> wrote:
> I'm getting this message whenever I try to connect google cloud sql.
> I'm using local development server with jdk version 1.6.4.
>
> HTTP ERROR 500
>
> Problem accessing /uni_cloud. Reason:
>
> com.google.appengine.repackaged.com.google.protobuf.GeneratedMessage
> is a restricted class. Please see the Google App Engine developer's
> guide for more details.
> Caused by:
>
> java.lang.NoClassDefFoundError:
> com.google.appengine.repackaged.com.google.protobuf.GeneratedMessage
> is a restricted class. Please see the Google App Engine developer's
> guide for more details.
> at
> com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime .java:
> 51)
> at
> com.google.appengine.repackaged.com.google.protobuf.GeneratedMessage.<clini t>(GeneratedMessage.java:
> 38)
> at
> com.google.cloud.sql.jdbc.internal.AbstractSqlClient.createConnectRequest(A bstractSqlClient.java:
> 222)
> at
> com.google.cloud.sql.jdbc.internal.SqlProtoClient.openConnection(SqlProtoCl ient.java:
> 57)
> at com.google.cloud.sql.jdbc.Driver.connect(Driver.java:66)
> at com.google.cloud.sql.jdbc.Driver.connect(Driver.java:26)
> at java.sql.DriverManager.getConnection(Unknown Source)
> at java.sql.DriverManager.getConnection(Unknown Source)
> at org.uni_cloud.Uni_cloudServlet.service(Uni_cloudServlet.java:37)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 511)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1166)
> at
> com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(He aderVerificationFilter.java:
> 35)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFi lter.java:
> 60)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Trans actionCleanupFilter.java:
> 43)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFile Filter.java:
> 122)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.appengine.tools.development.BackendServersFilter.doFilter(Backen dServersFilter.java:
> 97)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
> 388)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:
> 216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:
> 182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:
> 765)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> 418)
> at
> com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(Dev AppEngineWebAppContext.java:
> 78)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 152)
> at com.google.appengine.tools.development.JettyContainerService
> $ApiProxyHandler.handle(JettyContainerService.java:369)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
> 542)
> at org.mortbay.jetty.HttpConnection
> $RequestHandler.headerComplete(HttpConnection.java:923)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:
> 409)
> at org.mortbay.thread.QueuedThreadPool
> $PoolThread.run(QueuedThreadPool.java:582)
> Powered by Jetty://
>
> HERE IS CODE THAT I'm RUNNING
>
> package org.uni_cloud;
>
> import java.io.IOException;
> import java.io.PrintWriter;
>
> import javax.servlet.http.*;
> import com.google.appengine.api.rdbms.AppEngineDriver;
>
> import java.sql.*;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpServletResponse;
>
> @SuppressWarnings("serial")
> public class Uni_cloudServlet extends HttpServlet {
> @Override
> public void doGet(HttpServletRequest req, HttpServletResponse resp)
> throws IOException {
> this.service(req, resp);
> }
>
> @Override
> public void doPost(HttpServletRequest req, HttpServletResponse resp)
> throws IOException {
> this.service(req, resp);
> }
>
> public void service(HttpServletRequest req, HttpServletResponse resp)
> throws IOException {
>
> PrintWriter out = resp.getWriter();
> Connection c =null;
> resp.setContentType("text/html; charset=utf-8");
>
> try{
> DriverManager.registerDriver(new AppEngineDriver());
> c = DriverManager.getConnection("jdbc:google:rdbms://uni-
> cloud:unicloud/uni_cloud_db");
>
> String query = "insert into user (username, type)values (?, ?)";
> PreparedStatement stmt = c.prepareStatement(query);
> stmt.setString(1, "044-bscs-08");
> stmt.setString(2, "student");
>
> int success = 2;
> success = stmt.executeUpdate();
> if(success == 1) {
> out.println("<html><head></head><body>Success...</body></html>");
> } else if (success == 0) {
> out.println("<html><head></head><body>Failure!</body></html>");
> }
>
> }catch(Exception exp){
>
> }
> }
>
> }
>
> ==========================
> web.xml
> ==========================
> <?xml version="1.0" encoding="utf-8"?>
> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns="http://java.sun.com/xml/ns/javaee"
> xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
> <servlet>
> <servlet-name>Uni_cloud</servlet-name>
> <servlet-class>org.uni_cloud.Uni_cloudServlet</servlet-class>
> </servlet>
> <servlet-mapping>
> <servlet-name>Uni_cloud</servlet-name>
> <url-pattern>/uni_cloud</url-pattern>
> </servlet-mapping>
> <welcome-file-list>
> <welcome-file>index.html</welcome-file>
> </welcome-file-list>
> </web-app>
>
> please help me out...
