Discussion :

[molesqualeux]

bonjour,

Je ne comprends pas pourquoi ma console me donne cette erreur

java.lang.UnsupportedClassVersionError: Bad version number in .class file (unable to load class servletImage)

sous Eclipse et apache Tomcat 5.5.
Etant donné que j'ai bien tout placé en 1.5 dans mes propriétés de projet.
J'ai bien fait un clean puis un run (avec build automatically).

JRE System Library jre 1.5.0_07
Java compiler 1.5
Java Project Facets 5.0

voici le contenu de ma servlet:

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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import java.io.IOException;
import java.io.PrintWriter;
 
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.sql.Blob;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.CallableStatement;
 
import java.util.Vector;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpSession;
 
 
public class servletImage extends HttpServlet {
 
    private static final Logger logger = Logger.getLogger(HandlePDA.class);
    public void init(){
 
    }
 
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
 
 
        //connexion a*la base
 
        String imageId = request.getParameter("id");
       // imageId.substring(4);
        int codeRetour = 0;
        String Retour = new String();
        String imageBalise = new String();
        String hexaImage = new String();
    [ ..]        
          Connection conn = tool.getConnection();
 
          try{
 
                  // Create the statement
                  Statement stmt = conn.createStatement();
 
                  // Query all columns from the EMP table
                  ResultSet rset = stmt.executeQuery(query);
 
 
                       while (rset.next()) {
                             logger.debug(rset.getBlob("IM_PHOTO").toString());
                              byte[] imageBytes = rset.getBytes("IM_PHOTO") ; //récupération sur la db
                              InputStream is = new ByteArrayInputStream(imageBytes);
                              BufferedImage image = ImageIO.read(is);
                              // manipulation de l'image
                              // set the content type so the browser can see this as a picture
                               response.setContentType("image/jpeg");
                               response.getOutputStream().write(imageBytes);
 
 
                       }
 
                       logger.debug("bye bye");
 
          }catch(Exception e){
            logger.debug(e.getMessage());
         }
 
    }
 
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
 
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
 
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
 
}

Detail de l'erreur:

une instance de servlet
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:873)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Unknown Source)


cause mère

java.lang.UnsupportedClassVersionError: Bad version number in .class file (unable to load class servletImage)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1884)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:889)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1353)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1232)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:873)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Unknown Source)

merci

[Laurent.B]

Bonjour,

Donc, t'es certain que dans les propriétés de ton projet, tu as bien le Compiler compliance level sur 1.5, dans la rubrique Java Compiler ?

[molesqualeux]

Oui totalement.