JBoss RestEasy Hello World Example 專案


本範例實作說明：
本篇主要使用 Restful，做一個基本測試專案

一、範例開發準備工具

作業系統： Windows 7
開發工具： Eclipse Java EE IDE for Web Developers Juno Service Release2
JAVA JDK : JDK1.7.0_52
其它相關： Maven 4.0
   Resteasy Version 3.0.6.Final

二、新增Maven範例專案
範例專案名稱：RestfulSample

1.建立一個新的Maven Project



2.勾選Create a simple project(skip archetype selection)後按下Next按鈕


3.填入GroupId，ArtifactId以及選擇 Packaging 後按Next


4.產生後結果 project 結構


5. 手動新增WEB_INF folder結果



三、編輯 pom.xml



<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.sample.rest.resteasy</groupId>

   <artifactId>RestfulSample</artifactId>

   <version>0.0.1-SNAPSHOT</version>

   <packaging>war</packaging>

  

   <dependencies>

 

  <dependency>

   <groupId>org.jboss.resteasy</groupId>

   <artifactId>resteasy-jaxrs</artifactId>

   <version>3.0.6.Final</version>

  </dependency>



 </dependencies>

</project>


四、編輯 web.xml



<web-app 

xmlns="http://java.sun.com/xml/ns/javaee" 

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 

                       http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

version="3.0">



 <context-param>

  <param-name>resteasy.scan</param-name>

  <param-value>true</param-value>

 </context-param>

 

 <context-param>

  <param-name>resteasy.servlet.mapping.prefix</param-name>

  <param-value>/rest</param-value>

 </context-param>



 <listener>

  <listener-class>

   org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap

  </listener-class>

 </listener>

 

 

 <servlet>

  <servlet-name>resteasy-servlet</servlet-name>

  <servlet-class>

   org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher

  </servlet-class>

 </servlet>

 

 <servlet-mapping>

  <servlet-name>resteasy-servlet</servlet-name>

  <url-pattern>/rest/*</url-pattern>

 </servlet-mapping>

 

</web-app>

五、編輯 MessageApplication.java

 

 



package com.sample.rest.app;



import java.util.HashSet;

import java.util.Set;



import javax.ws.rs.core.Application;



import com.sample.rest.MessageRestService;

 

public class MessageApplication extends Application {

 private Set<Object> singletons = new HashSet<Object>();

 

 public MessageApplication() {

  singletons.add(new MessageRestService());

 }

 

 @Override

 public Set<Object> getSingletons() {

  return singletons;

 }

}


六、編輯 MessageRestService.java



package com.sample.rest;



import javax.ws.rs.GET;

import javax.ws.rs.Path;

import javax.ws.rs.PathParam;

import javax.ws.rs.core.Response;

 

@Path("/message")

public class MessageRestService {

 

 @GET

 @Path("/{param}")

 public Response printMessage(@PathParam("param") String msg) {

 

  String result = "Restful example : " + msg;

 

  return Response.status(200).entity(result).build();

 

 }

 

}


六、結果顯示 :

        URL = http://127.0.0.1:8080/RestfulSample/rest/message/puma















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