how to give servlet in src attribute?

Question

I use the following code to set the src attribute in image tag from the servlet.but it's not working can any one help me to do this.

<img src="./imageDisplayProcess.do" alt="hai" width="117" height="160"/>

Servlet

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        try{

                Class.forName("com.mysql.jdbc.Driver");
                Connection connection =DriverManager.getConnection("jdbc:mysql://localhost:3306/raptor1_5","root","");
                Statement st1=connection.createStatement();
                ResultSet rs1 = st1.executeQuery("select Qimg from tbl_MatchImgToImg where C_code='R201AEV01'");
                String imgLen="";
                if(rs1.next()){
                    imgLen = rs1.getString(1);
                    System.out.println(imgLen.length());
                }   
                rs1 = st1.executeQuery("select Qimg from tbl_MatchImgToImg where C_code='R201AEV01'");
                if(rs1.next()){
                    int len = imgLen.length();
                    byte [] rb = new byte[len];
                    java.io.InputStream readImg = rs1.getBinaryStream(1);
                    int index=readImg.read(rb, 0, len); 
                    System.out.println("index"+index);
                    st1.close();
                    response.reset();
                    response.setContentType("image/jpg");
                    response.getOutputStream().write(rb,0,len);
                    response.getOutputStream().flush();             
                }



    }
        catch(Exception e){
            System.out.println(e);
        }
        }

web.xml

<servlet>
    <servlet-name>imageDisplayProcess</servlet-name>
    <servlet-class>get.imageDisplayProcess</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>imageDisplayProcess</servlet-name>
    <url-pattern>/imageDisplayProcess.do</url-pattern>
  </servlet-mapping>

@VirajNalawade i didn't get any error how to set src in img tag — KVK, Feb 23 '16 at 09:59
You do not give servlets in src, or any other part of HTML. You give URLs. — Raedwald, Feb 23 '16 at 10:00
I think you must be getting error on browser atleast if not in your logs.. as img src generates get request you have implemented doPost.. tried changing that..? — Viraj Nalawade, Feb 23 '16 at 10:01

score 2 · Accepted Answer · answered Feb 23 '16 at 09:55

2

Assuming your servlet is bound to imageDisplayProcess.do:

The images you reference with -Elements in HTML are fetched using an HTTP GET request. What you implemented in the servlet is a POST request.

For GET requests you use the doGet() method instead of the doPost().

answered Feb 23 '16 at 09:55

Matthias Wimmer

3,789
2
22
41

i chage the code from doPost to doGet method but no use – KVK Feb 23 '16 at 10:00
You should provide more context then. How have you set up the servlets and the routings? What is returned by the server when you send the request for the image? What is in the logfile of your servlet container? – Matthias Wimmer Feb 23 '16 at 10:06
After making some corrections it works fine I changed my xml and image tag from to – KVK Feb 23 '16 at 10:27

how to give servlet in src attribute?

1 Answers1