画像出力Servlet
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画像出力Servlet
| Javaテンプレート:Category コード片
呼出元
<img src="/rscsvr/img.irc?img=01.jpg">
Web.xml
<servlet> <servlet-name>imageresoruce</servlet-name> <servlet-class>rc.ImageResourceServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <!-- Standard Action Servlet Mapping --> <servlet-mapping> <servlet-name>imageresoruce</servlet-name> <url-pattern>*.irc</url-pattern> </servlet-mapping>
Servlet
package rc; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.OutputStream; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @SuppressWarnings("serial") public class ImageResourceServlet extends HttpServlet { private String basedir = "c:\\work\\img\\"; @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { byte[] buf = new byte[1024]; String img = request.getParameter("img"); File f = new File(basedir + img); // 動的ファイルのファイル名を設定 response.setHeader("Cache-Control", "public"); // IE対策 response.setContentType("image/jpeg"); response.setHeader("Content-Disposition", "inline; filename=\"" + f.getName() + "\""); FileInputStream r = new FileInputStream(f); OutputStream o = response.getOutputStream(); while (r.read(buf) > 0) { o.write(buf); } o.close(); r.close(); } }
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