jsp图片不在工程内的展示

jsp图片不在工程内的显示
1.src=‘请求路径’
2.后台代码

public void doGetImage(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        response.setContentType("text/html; charset=GBK");        response.setContentType("image/jpeg");                FileInputStream inputs = new FileInputStream(filePath+"1371190361756.jpg");        OutputStream output = response.getOutputStream();                try {            int count = 0;            byte[] buffer = new byte[1024*8];            while ( (count = inputs.read(buffer)) != -1 )            output.write(buffer, 0, count);        } finally {        if(inputs!=null){                  try {                      inputs.close();                  } catch (IOException e) {                      e.printStackTrace();                  }               }               if(output!=null){                  try {                      output.close();                  } catch (IOException e) {                      e.printStackTrace();                  }               }        }    }