woodie/README.rdoc

## README.rdoc

      
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              README.rdoc
            
          
Using Servlets¶ ↑


The XML is generated by the config.ru

fiddle-sticks.appspot.com

Headius donated some duby to inspire us

gist.github.com/333173

  
## build.sh
#!/bin/sh
export CLASSPATH=./build/lib/servlet.jar:./WEB-INF/lib/appengine-api-1.0-sdk-1.3.1.jar

javac com/example/Fancy.java
javac com/example/Plain.java
javac com/example/Nickname.java
mkdir -p WEB-INF/lib
jar -cvf WEB-INF/lib/examples.jar com/example/*.class
rm com/example/*.class

## com example Fancy.java
package com.example;

import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class Fancy extends HttpServlet {

    public void doGet(HttpServletRequest request,
                      HttpServletResponse response)
        throws IOException, ServletException
    {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        out.println("<html>\n<head>");
        out.println("<title>Hello</title>");
        out.println("</head>\n<body style='background-color: LightYellow;'>");
        out.println("<h1> Hello Servlet </h1>");
        out.println("<img src='/images/appengine-silver-120x30.gif'>");
        out.println("</body>\n</html>");
    }

}

## com example Nickname.java
package com.example;

import java.io.IOException;
import javax.servlet.http.*;
import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;

public class Nickname extends HttpServlet {
    public void doGet(HttpServletRequest req, HttpServletResponse resp)
              throws IOException {
        UserService userService = UserServiceFactory.getUserService();
        User user = userService.getCurrentUser();

        resp.setContentType("text/plain");
        String nickname = (user != null) ? user.getNickname() : "nobody";
        resp.getWriter().println(nickname);
    }
}

## com example Plain.java
package com.example;

import java.io.IOException;
import javax.servlet.http.*;
import com.google.apphosting.api.ApiProxy;
import com.google.apphosting.api.ApiProxy.Environment;

public class Plain extends HttpServlet {

  public void doGet(HttpServletRequest req, HttpServletResponse resp)
      throws IOException {
    Environment env = ApiProxy.getCurrentEnvironment();
    String app_id  = env.getAppId();
    String raw_ver = env.getVersionId();
    String version = raw_ver.substring(0,raw_ver.lastIndexOf("."));
    String domain  = env.getAuthDomain();
    // print out some stuff
    String message = "app_id:  " + app_id  + "\n" +
                     "version: " + version + "\n" +
                     "domain:  " + domain;
    resp.setContentType("text/plain");
    resp.getWriter().println(message);
  }

}

## config.ru
require 'appengine-rack'
require 'appengine-rack/java'

AppEngine::Rack.configure_app(
    :application => "fiddle-sticks",
    :precompilation_enabled => true,
    :version => 1)

AppEngine::Rack.app.resource_files.exclude '/build**'

skip_rack_servlet

mime_mapping :xpi => 'application/x-xpinstall', :ru  => 'text/plain'

map '/fancy' do
  run JavaServlet.new('com.example.Fancy', :name => 'FancyServlet')
end

map '/nickname' do
  use AppEngine::Rack::LoginRequired
  run JavaServlet.new('com.example.Nickname', :name  => 'NicknameServlet')
end

map '/plain' do
  run JavaServlet.new('com.example.Plain', :name  => 'PlainServlet')
end

map '/rack' do
  use JavaServletFilter, 'org.jruby.rack.RackFilter',
    { :name => 'RackFilter', :wildcard => true }
  run lambda { Rack::Response.new("Hello Rack!").finish }
end

## WEB-INF web.xml
<web-app xmlns='http://java.sun.com/xml/ns/javaee' version='2.5'>
  <security-constraint>
    <web-resource-collection>
      <url-pattern>/nickname</url-pattern>
      <url-pattern>/nickname/*</url-pattern>
    </web-resource-collection>
    <auth-constraint>
      <role-name>*</role-name>
    </auth-constraint>
  </security-constraint>
  <servlet>
    <servlet-name>NicknameServlet</servlet-name>
    <servlet-class>com.example.Nickname</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>NicknameServlet</servlet-name>
    <url-pattern>/nickname</url-pattern>
  </servlet-mapping>
  <servlet>
    <servlet-name>FancyServlet</servlet-name>
    <servlet-class>com.example.Fancy</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>FancyServlet</servlet-name>
    <url-pattern>/fancy</url-pattern>
  </servlet-mapping>
  <servlet>
    <servlet-name>PlainServlet</servlet-name>
    <servlet-class>com.example.Plain</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>PlainServlet</servlet-name>
    <url-pattern>/plain</url-pattern>
  </servlet-mapping>
  <filter>
    <filter-name>RackFilter</filter-name>
    <filter-class>org.jruby.rack.RackFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>RackFilter</filter-name>
    <url-pattern>/rack</url-pattern>
  </filter-mapping>
  <filter-mapping>
    <filter-name>RackFilter</filter-name>
    <url-pattern>/rack/*</url-pattern>
  </filter-mapping>
  <context-param>
    <param-name>rackup</param-name>
    <param-value>
Dir.chdir(&apos;..&apos;) if Dir.pwd =~ /WEB-INF$/; begin; require &apos;bundler_gems/environment&apos;; rescue LoadError; end;eval IO.read(&apos;config.ru&apos;), nil, &apos;config.ru&apos;, 1
    </param-value>
  </context-param>
  <listener>
    <listener-class>com.google.appengine.jruby.LazyContextListener</listener-class>
  </listener>
  <mime-mapping>
    <extension>xpi</extension>
    <mime-type>application/x-xpinstall</mime-type>
  </mime-mapping>
  <mime-mapping>
    <extension>ru</extension>
    <mime-type>text/plain</mime-type>
  </mime-mapping>
</web-app>
	#!/bin/sh
	export CLASSPATH=./build/lib/servlet.jar:./WEB-INF/lib/appengine-api-1.0-sdk-1.3.1.jar

	javac com/example/Fancy.java
	javac com/example/Plain.java
	javac com/example/Nickname.java
	mkdir -p WEB-INF/lib
	jar -cvf WEB-INF/lib/examples.jar com/example/*.class
	rm com/example/*.class
	package com.example;

	import java.io.*;
	import java.text.*;
	import java.util.*;
	import javax.servlet.*;
	import javax.servlet.http.*;

	public class Fancy extends HttpServlet {

	public void doGet(HttpServletRequest request,
	HttpServletResponse response)
	throws IOException, ServletException
	{
	response.setContentType("text/html");
	PrintWriter out = response.getWriter();

	out.println("<html>\n<head>");
	out.println("<title>Hello</title>");
	out.println("</head>\n<body style='background-color: LightYellow;'>");
	out.println("<h1> Hello Servlet </h1>");
	out.println("<img src='/images/appengine-silver-120x30.gif'>");
	out.println("</body>\n</html>");
	}

	}
	package com.example;

	import java.io.IOException;
	import javax.servlet.http.*;
	import com.google.appengine.api.users.User;
	import com.google.appengine.api.users.UserService;
	import com.google.appengine.api.users.UserServiceFactory;

	public class Nickname extends HttpServlet {
	public void doGet(HttpServletRequest req, HttpServletResponse resp)
	throws IOException {
	UserService userService = UserServiceFactory.getUserService();
	User user = userService.getCurrentUser();

	resp.setContentType("text/plain");
	String nickname = (user != null) ? user.getNickname() : "nobody";
	resp.getWriter().println(nickname);
	}
	}
	require 'appengine-rack'
	require 'appengine-rack/java'

	AppEngine::Rack.configure_app(
	:application => "fiddle-sticks",
	:precompilation_enabled => true,
	:version => 1)

	AppEngine::Rack.app.resource_files.exclude '/build**'

	skip_rack_servlet

	mime_mapping :xpi => 'application/x-xpinstall', :ru => 'text/plain'

	map '/fancy' do
	run JavaServlet.new('com.example.Fancy', :name => 'FancyServlet')
	end

	map '/nickname' do
	use AppEngine::Rack::LoginRequired
	run JavaServlet.new('com.example.Nickname', :name => 'NicknameServlet')
	end

	map '/plain' do
	run JavaServlet.new('com.example.Plain', :name => 'PlainServlet')
	end

	map '/rack' do
	use JavaServletFilter, 'org.jruby.rack.RackFilter',
	{ :name => 'RackFilter', :wildcard => true }
	run lambda { Rack::Response.new("Hello Rack!").finish }
	end
	<web-app xmlns='http://java.sun.com/xml/ns/javaee' version='2.5'>
	<security-constraint>
	<web-resource-collection>
	<url-pattern>/nickname</url-pattern>
	<url-pattern>/nickname/*</url-pattern>
	</web-resource-collection>
	<auth-constraint>
	<role-name>*</role-name>
	</auth-constraint>
	</security-constraint>
	<servlet>
	<servlet-name>NicknameServlet</servlet-name>
	<servlet-class>com.example.Nickname</servlet-class>
	</servlet>
	<servlet-mapping>
	<servlet-name>NicknameServlet</servlet-name>
	<url-pattern>/nickname</url-pattern>
	</servlet-mapping>
	<servlet>
	<servlet-name>FancyServlet</servlet-name>
	<servlet-class>com.example.Fancy</servlet-class>
	</servlet>
	<servlet-mapping>
	<servlet-name>FancyServlet</servlet-name>
	<url-pattern>/fancy</url-pattern>
	</servlet-mapping>
	<servlet>
	<servlet-name>PlainServlet</servlet-name>
	<servlet-class>com.example.Plain</servlet-class>
	</servlet>
	<servlet-mapping>
	<servlet-name>PlainServlet</servlet-name>
	<url-pattern>/plain</url-pattern>
	</servlet-mapping>
	<filter>
	<filter-name>RackFilter</filter-name>
	<filter-class>org.jruby.rack.RackFilter</filter-class>
	</filter>
	<filter-mapping>
	<filter-name>RackFilter</filter-name>
	<url-pattern>/rack</url-pattern>
	</filter-mapping>
	<filter-mapping>
	<filter-name>RackFilter</filter-name>
	<url-pattern>/rack/*</url-pattern>
	</filter-mapping>
	<context-param>
	<param-name>rackup</param-name>
	<param-value>
	Dir.chdir('..') if Dir.pwd =~ /WEB-INF$/; begin; require 'bundler_gems/environment'; rescue LoadError; end;eval IO.read('config.ru'), nil, 'config.ru', 1
	</param-value>
	</context-param>
	<listener>
	<listener-class>com.google.appengine.jruby.LazyContextListener</listener-class>
	</listener>
	<mime-mapping>
	<extension>xpi</extension>
	<mime-type>application/x-xpinstall</mime-type>
	</mime-mapping>
	<mime-mapping>
	<extension>ru</extension>
	<mime-type>text/plain</mime-type>
	</mime-mapping>
	</web-app>