1.Hello World

Create a new Maven webapp project in Eclipse

参考此篇文章，在Eclipse创建一个基于Maven的webapp项目。其中Artifact Id按照如下设置
http://www.cnblogs.com/xxuan/p/6739633.html

修改Maven项目文件pom.xml，如下。增加对jersey的依赖。

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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.xuan..tutorial</groupId>
    <artifactId>hello-world-ws</artifactId>
    <packaging>war</packaging>
    <version>1.0.0</version>
    <name>hello-world-ws Maven Webapp</name>
    <url>http://maven.apache.org</url>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.8.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-server</artifactId>
            <version>1.8</version>
        </dependency>
    </dependencies>
    <build>
        <finalName>hello-world-ws</finalName>
    </build>
    <repositories>
        <repository>
            <id>snapshot-repository.java.net</id>
            <name>Java.net Snapshot Repository for Maven</name>
            <url>https://maven.java.net/content/repositories/snapshots/</url>
            <layout>default</layout>
        </repository>
    </repositories>
</project>

Add HelloWorld Web Service Implementation

在src/main/java目录下新增Web Service实现源码文件HelloWorldService.java
编辑HelloWorldService.java文件，内容如下

 1 package com.xuan.flight.tutorial.ws;
 2  
 3 import javax.ws.rs.GET;
 4 import javax.ws.rs.Path;
 5 import javax.ws.rs.PathParam;
 6  
 7 @Path("/hello")
 8 public class HelloWorldService
 9 {  
10     @GET
11     @Path("/{param}")
12     public String sayHello(@PathParam("param") String msg)
13     {
14         String output = "Hello : " + msg;
15         return output;
16     }
17 }

View Code

编辑WEB-INF下的web.xml文件，注册Jersey的Servlet“com.sun.jersey.spi.container.servlet.ServletContainer“, 并将刚才生成的Web Service目录作为其初始化参数 “init-param“, “com.sun.jersey.config.property.packages“.

 1 <!DOCTYPE web-app PUBLIC
 2  "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 3  "http://java.sun.com/dtd/web-app_2_3.dtd" >
 4 <web-app>
 5   <display-name>Archetype Created Web Application</display-name>
 6    
 7   <servlet>
 8         <servlet-name>jersey-serlvet</servlet-name>
 9         <servlet-class>
10                      com.sun.jersey.spi.container.servlet.ServletContainer
11                 </servlet-class>
12         <init-param>
13              <param-name>com.sun.jersey.config.property.packages</param-name>
14              <param-value>com.ctrip.flight.tutorial.ws</param-value>
15         </init-param>
16         <load-on-startup>1</load-on-startup>
17     </servlet>
18     <servlet-mapping>
19         <servlet-name>jersey-serlvet</servlet-name>
20         <url-pattern>/rest/*</url-pattern>
21     </servlet-mapping>
22 </web-app>

View Code

Compile & Deploy

进入项目所在目录(pom.xml文件所在位置)，运行命令mvn clean package。在target目录下生成了文件hello-world-ws.war。
将hello-world-web.war文件copy到${TOMCAT_HOME}/webapps目录下，重启tomcat。
在浏览器中访问http://localhost:8080/hello-world-ws/rest/hello/world，可以看到如下输出。

Hello : world