JAX-RS开发 hello world

1.建立maven webapp工程aty-rest。

2. 在pom文件增加spring框架、jax-rs接口、CXF实现

<dependency>
    <groupId>javax.ws.rs</groupId>
    <artifactId>javax.ws.rs-api</artifactId>
    <version>2.0</version>
</dependency>

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>3.1.1.RELEASE</version>
</dependency>

<dependency>
    <groupId>org.apache.cxf</groupId>
    <artifactId>cxf-rt-frontend-jaxrs</artifactId>
    <version>3.0.0</version>
</dependency>

3.编写rest接口和实现类

public interface INameService
{
    @GET
    @Path("/welcome/")
    @Produces(MediaType.APPLICATION_JSON)
    public String welcome();
}

//
@Component("nameServiceImpl")
public class NameServiceImpl implements INameService
{
    public String welcome()
    {
        return "{"name":123}";
    }
}

4.web.xml中启动sping和cxf

<!-- Spring -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- CXF -->
    <servlet>
        <servlet-name>cxf</servlet-name>
        <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>cxf</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>

4.配置cxf-spring.xml，并在spring.xml中将其包含进去

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jaxrs="http://cxf.apache.org/jaxrs"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://cxf.apache.org/jaxrs
    http://cxf.apache.org/schemas/jaxrs.xsd">

    <jaxrs:server address="/greet">
        <jaxrs:serviceBeans>
            <ref bean="nameServiceImpl"/>
        </jaxrs:serviceBeans>
    </jaxrs:server>

</beans>

5.用maven打包，将war部署到tomcat下。

一切正常即可通过http://127.0.0.1:8080/aty-rest/rest/greet/welcome访问我们发布的rest服务。