GAE web.xml設置例

Google App Engine Javaで開発するウェブアプリケーションのweb.xml設置例を紹介します。

web.xmlとサーブレットの連携してサービスを提供します。

WebxmlsampleServlet.java

package webxmlsample;

import java.io.IOException;

import java.util.Enumeration;

import javax.servlet.http.*;

@SuppressWarnings("serial")

public class WebxmlsampleServlet extends HttpServlet

{

              @SuppressWarnings("unchecked")

              public void doGet(HttpServletRequest req, HttpServletResponse resp)

                                          throws IOException

              {

                            resp.setContentType("text/plain");

                            resp.getWriter().println("Hello, world");

                            String param1 = getServletConfig().getInitParameter("param1");

                            resp.getWriter().println("param1=" + param1);

                            String key = "";

                            for (Enumeration<Object> e = getServletConfig().getInitParameterNames(); e.hasMoreElements();)

                            {

                                          key = e.nextElement().toString();

                                          resp.getWriter().println(key + getServletConfig().getInitParameter(key));

                            }

              }

}

web.xml

<web-app>

        <servlet>

                <servlet-name>Webxmlsample</servlet-name>

                <servlet-class>webxmlsample.WebxmlsampleServlet</servlet-class>

                <init-param>

                        <param-name>param1</param-name>

                        <param-value>val1</param-value>

                </init-param>

                <init-param>

                        <param-name>param2</param-name>

                        <param-value>val2</param-value>

                </init-param>

                <init-param>

                        <param-name>param3</param-name>

                        <param-value>val3</param-value>

                </init-param>

        </servlet>

        <servlet-mapping>

                <servlet-name>Webxmlsample</servlet-name>

                <url-pattern>/webxmlsample</url-pattern>

        </servlet-mapping>

        <welcome-file-list>

                <welcome-file>index.html</welcome-file>

        </welcome-file-list>

        <error-page>

                <error-code>500</error-code>

                <location>/err/err500.jsp</location>

        </error-page>

</web-app>