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

1. <dependency>
2. <groupId>javax.ws.rs</groupId>
3. <artifactId>javax.ws.rs-api</artifactId>
4. <version>2.0</version>
5. </dependency>
6. <dependency>
7. <groupId>org.springframework</groupId>
8. <artifactId>spring-web</artifactId>
9. <version>3.1.1.RELEASE</version>
10. </dependency>
11. <dependency>
12. <groupId>org.apache.cxf</groupId>
13. <artifactId>cxf-rt-frontend-jaxrs</artifactId>
14. <version>3.0.0</version>
15. </dependency>

3.编写rest接口和实现类

1. public interface INameService
2. {
3. @GET
4. @Path("/welcome/")
5. @Produces(MediaType.APPLICATION_JSON)
6. public String welcome();
7. }
8. //
9. @Component("nameServiceImpl")
10. public class NameServiceImpl implements INameService
11. {
12. public String welcome()
13. {
14. return "{\"name\":123}";
15. }
16. }

4.web.xml中启动sping和cxf

1. <!-- Spring -->
2. <context-param>
3. <param-name>contextConfigLocation</param-name>
4. <param-value>classpath:spring.xml</param-value>
5. </context-param>
6. <listener>
7. <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
8. </listener>
9. <!-- CXF -->
10. <servlet>
11. <servlet-name>cxf</servlet-name>
12. <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
13. </servlet>
14. <servlet-mapping>
15. <servlet-name>cxf</servlet-name>
16. <url-pattern>/rest/*</url-pattern>
17. </servlet-mapping>

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

1. <?xml version="1.0" encoding="UTF-8"?>
2. <beans xmlns="http://www.springframework.org/schema/beans"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4. xmlns:jaxrs="http://cxf.apache.org/jaxrs"
5. xsi:schemaLocation="http://www.springframework.org/schema/beans
6. http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
7. http://cxf.apache.org/jaxrs
8. http://cxf.apache.org/schemas/jaxrs.xsd">
9. <jaxrs:server address="/greet">
10. <jaxrs:serviceBeans>
11. <ref bean="nameServiceImpl"/>
12. </jaxrs:serviceBeans>
13. </jaxrs:server>
14. </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。