jsp servlet 读取图片！！！！！！！！！！！！！！！！！！！！！！

[SunShine_Guang]

sqlserver2000 数据库，image类型的字段

我想从数据库中读取这个图片，然后显示在jsp页面上

在servlet中应该怎么写，jsp中又怎么写呢？

[SunShine_Guang]

[Quote=引用 4 楼 stl0 的回复:]
Java code

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ByteArrayOutputStream localBuffer = new ByteArrayOutputStre……
[/Quote]

谢谢你的代码，那jsp呢？

[lp19890601]

幫頂........

[凡人之玲珑]

文件操作流 先从数据库中读出来
然后在写入页面

[myhope88]

读取流中，然后再设定页面输出形式

[stl0]

	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		ByteArrayOutputStream localBuffer = new ByteArrayOutputStream();
		BufferedOutputStream servletOutput = new BufferedOutputStream(response.getOutputStream());

		try {
			ResultSet rs = getResultSet();
			try {
				if (rs.next()) {
					BufferedInputStream imageData = new BufferedInputStream(rs.getBinaryStream(1));
					int len = 0;
					byte[] buffer = new byte[1024 * 1024];
					while ((len = imageData.read(buffer)) >= 0) {
						localBuffer.write(buffer, 0, len);
					}
				}
			} catch (SQLException e) {
				e.printStackTrace();
			} finally {
				shutdownResultSet(rs);
			}

			byte[] imageBytes = localBuffer.toByteArray();
			response.setContentType(getMimeType(request));
			response.setContentLength(imageBytes.length);
			response.setHeader("Content-disposition", "inline; filename=\"" + getImageName(request) + "\"");

			servletOutput.write(imageBytes);
		} finally {
			servletOutput.flush();
			close(servletOutput);
			close(localBuffer);
		}
	}

[lele140]

关注下，方便学习

[Avin]

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