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ページの作成:「==画像出力Servlet== [Java]{{category コード片}} =====呼出元===== <img src="/rscsvr/img.irc?img=01.jpg"> =====Web.xml===== <servlet> <servlet-nam…」
==画像出力Servlet==
[Java]{{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();
}
}
[Java]{{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();
}
}
© 2006 矢木浩人
