ServletOutputStream的servlet中的相对路径

Question

我正在阅读servlet编程。在实现ServletOutputStream以从相对路径读取图像时，它会抛出找不到文件的异常。

我尝试了多种方法但失败了，下面是eclipse中相关代码和文件夹结构的快照。

    public void service(ServletRequest arg0, ServletResponse arg1)
            throws ServletException, IOException {


        arg1.setContentType("image/jpeg");
        ServletOutputStream out = arg1.getOutputStream();

        FileInputStream fis = new FileInputStream("images/myimage.jpg");

        BufferedInputStream bin = new BufferedInputStream(fis);
        BufferedOutputStream boit = new BufferedOutputStream(out);
        int ch = 0;
        while((ch = bin.read() ) != -1){
            boit.write(ch);
        }
        boit.close();
        bin.close();
        fis.close();
        out.close();

    }
}

Answer 1

Get the ServletContext。然后是get the resource as a stream。

final InputStream imageStream = arg0.getServletContext().getResourceAsStream("/images/myiamge.jpg");