我正在尝试向Servlet发送一些东西，但是我得到了

    Etat HTTP 404 - /pdfreader/Services%20Web%20avec%20J2EE%20et%20.NET.pdf

--------------------------------------------------------------------------------

type Rapport d''état

message /pdfreader/Services%20Web%20avec%20J2EE%20et%20.NET.pdf

description La ressource demandée (/pdfreader/Services%20Web%20avec%20J2EE%20et%20.NET.pdf) n'est pas disponible.

我像这样从我的JSP调用它

<a href="/pdfreader/<%=filename/*le nom d'un fichier pdf par exemple (jsp.pdf)*/ %>"><%=bookName %> </a>

而我的servlet代码是

package com.search.ts;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URLDecoder;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class pdfreader
 */
@WebServlet("/pdfreader")
public class pdfreader extends HttpServlet {
    private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public pdfreader() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
          String filename = URLDecoder.decode(request.getPathInfo(), "UTF-8");
            //filename= request.getParameter("err");
            //String filename =(String) request.getAttribute("linkbook");
            File file = new File("F:/fichiers/", filename);

            response.setContentType(getServletContext().getMimeType(file.getName()));
            response.setContentLength((int) file.length());
            response.setHeader("Content-Disposition", "inline; filename=\"" + file.getName() + "\"");

            BufferedInputStream input = null;
            BufferedOutputStream output = null;

            try {
                input = new BufferedInputStream(new FileInputStream(file));
                output = new BufferedOutputStream(response.getOutputStream());

                byte[] buffer = new byte[8192];
                int length;
                while ((length = input.read(buffer)) > 0) {
                    output.write(buffer, 0, length);
                }
            } finally {
                if (output != null) try { output.close(); } catch (IOException ignore) {}
                if (input != null) try { input.close(); } catch (IOException ignore) {}
            }
    }

}

当我创建servlet和jsp时，我在web-inf中没有得到任何web.xml（我使用eclipse）

所以我尝试创建一个

<?xml version="1.0" encoding="UTF-8"?>

<web-app>
<welcome-file-list>
<welcome-file>/vieu/indexS.jsp</welcome-file>
</welcome-file-list>
<servlet>
<javaee:description></javaee:description>
<javaee:display-name>pdfreader</javaee:display-name>
<servlet-name>pdfreader</servlet-name>
<servlet-class>pdfreader</servlet-class>
<jsp-file>/vieu/indexS.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>com.search.ts.pdfreader</servlet-name>
<url-pattern>/pdfreader/*</url-pattern>
</servlet-mapping>
</web-app>

有人知道为什么那行不通吗？