That’s a quick guide to setup a test Servlet running on the lightweight Jetty web container, embedded and fired as a Maven plugin.
First off, create a New Maven Project in Eclipse.
Then define the following POM file:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.wordpress.dimitrisli</groupId>
<artifactId>TestServletInJettyMaven</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<build>
<finalName>TestServletInJettyMaven</finalName>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>8.0.0.M3</version>
<configuration>
<scanIntervalSeconds>10</scanIntervalSeconds>
<webAppConfig>
<contextPath>/TestServletInJettyMaven</contextPath>
</webAppConfig>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
Then, it’s time for our Servlet class:
package servletService;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class TestServletInJettyMaven extends HttpServlet{
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
out.println("Get method called");
out.println("parameters:"+parameters(request));
out.println("headers:"+headers(request));
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
out.println("Post method called");
out.println("parameters:"+parameters(request));
out.println("headers"+headers(request));
}
private String parameters(HttpServletRequest request){
StringBuilder builder = new StringBuilder();
for(Enumeration<?> e = request.getParameterNames() ; e.hasMoreElements();){
String name = (String)e.nextElement();
builder.append("|"+name + "->"+request.getParameter(name));
}
return builder.toString();
}
private String headers(HttpServletRequest request){
StringBuilder builder = new StringBuilder();
for(Enumeration e = request.getHeaderNames() ; e.hasMoreElements();){
String name = (String)e.nextElement();
builder.append("|"+name +"->"+request.getHeader(name));
}
return builder.toString();
}
}
And finally our web.xml that we need to define under the new folder structure: src/main/webapp/WEB-INF/web.xml:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<display-name>Test Servlet In Jetty Maven</display-name>
<description>Test Servlet In Jetty Maven Service
</description>
<servlet>
<servlet-name>TestServletInJettyMaven</servlet-name>
<servlet-class>servletService.TestServletInJettyMaven</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestServletInJettyMaven</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
To build the code and deploy to jetty, from the Run configurations of Eclipse, create a new Maven run configuration, make it point to your newly created project under the Base Directory section and set as Goals:
-Djetty.port=8081 jetty:run
Now connect to the following url to test the connection:
http://localhost:8081/TestServletInJettyMaven/test
For downloading the code of this sceletal bootstrap have a look at this Mercurial repository
