Spring整合CXF webservice restful 实例

webservice restful接口跟soap协议的接口实现大同小异，只是在提供服务的类/接口的注解上存在差异，具体看下面的代码，然后自己对比下就可以了。

用到的基础类

User.java

@XmlRootElement(name="User")
public class User {

    private String userName;
    private String sex;
    private int age;
    
    public User(String userName, String sex, int age) {
        super();
        this.userName = userName;
        this.sex = sex;
        this.age = age;
    }
    
    public User() {
        super();
    }

    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    
    public static void main(String[] args) throws IOException {
        System.setProperty("http.proxySet", "true"); 

        System.setProperty("http.proxyHost",  "192.168.1.20"); 

        System.setProperty("http.proxyPort", "8080");
        
        URL url = new URL("http://www.baidu.com"); 

        URLConnection con =url.openConnection(); 
        
        System.out.println(con);
    }
}

接下来是服务提供类，PhopuRestfulService.java

@Path("/phopuService")
public class PhopuRestfulService {


    Logger logger = Logger.getLogger(PhopuRestfulServiceImpl.class);

    @GET
    @Produces(MediaType.APPLICATION_JSON) //指定返回数据的类型 json字符串
    //@Consumes(MediaType.TEXT_PLAIN) //指定请求数据的类型 文本字符串
    @Path("/getUser/{userId}")
    public User getUser(@PathParam("userId")String userId) {
        this.logger.info("Call getUser() method...."+userId);
        User user = new User();
        user.setUserName("中文");
        user.setAge(26);
        user.setSex("m");
        return user;
    }

    @POST
    @Produces(MediaType.APPLICATION_JSON) //指定返回数据的类型 json字符串
    //@Consumes(MediaType.TEXT_PLAIN) //指定请求数据的类型 文本字符串
    @Path("/getUserPost")
    public User getUserPost(String userId) {
        this.logger.info("Call getUserPost() method...."+userId);
        User user = new User();
        user.setUserName("中文");
        user.setAge(26);
        user.setSex("m");
        return user;
    }
}

web.xml配置，跟soap协议的接口一样

<!-- CXF webservice 配置 -->
    <servlet>
        <servlet-name>cxf-phopu</servlet-name>
        <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>cxf-phopu</servlet-name>
        <url-pattern>/services/*</url-pattern>
    </servlet-mapping>

Spring整合配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jaxws="http://cxf.apache.org/jaxws"
    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/jaxws http://cxf.apache.org/schemas/jaxws.xsd
        http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">
    <import resource="classpath:/META-INF/cxf/cxf.xml" />
    <import resource="classpath:/META-INF/cxf/cxf-servlet.xml" />
    <import resource="classpath:/META-INF/cxf/cxf-extension-soap.xml" />

    <!-- 配置restful json 解析器 , 用CXF自带的JSONProvider需要注意以下几点
    -1、dropRootElement 默认为false，则Json格式会将类名作为第一个节点，如{Customer:{"id":123,"name":"John"}}，如果配置为true，则Json格式为{"id":123,"name":"John"}。
    -2、dropCollectionWrapperElement属性默认为false，则当遇到Collection时，Json会在集合中将容器中类名作为一个节点，比如{"Customer":{{"id":123,"name":"John"}}}，而设置为false，则JSon格式为{{"id":123,"name":"John"}}
    -3、serializeAsArray属性默认为false，则当遇到Collecion时，格式为{{"id":123,"name":"John"}}，如果设置为true，则格式为[{"id":123,"name":"john"}]，而Gson等解析为后者
   
    <bean id="jsonProviders" class="org.apache.cxf.jaxrs.provider.json.JSONProvider">
        <property name="dropRootElement" value="true" />
        <property name="dropCollectionWrapperElement" value="true" />
        <property name="serializeAsArray" value="true" />
    </bean>
 -->
    <!-- 服务类 -->
    <bean id="phopuService" class="com.phopu.service.PhopuRestfulService" />
    <jaxrs:server id="service"  address="/">
        <jaxrs:inInterceptors>
            <bean class="org.apache.cxf.interceptor.LoggingInInterceptor" />
        </jaxrs:inInterceptors>
        <!--serviceBeans：暴露的WebService服务类-->
        <jaxrs:serviceBeans>
            <ref bean="phopuService" />
        </jaxrs:serviceBeans>
        <!--支持的协议-->
        <jaxrs:extensionMappings>
            <entry key="json" value="application/json"/>
            <entry key="xml" value="application/xml" />
            <entry key="text" value="text/plain" />
        </jaxrs:extensionMappings>
        <!--对象转换-->
        <jaxrs:providers>
            <!-- <ref bean="jsonProviders" /> 这个地方直接用CXF的对象转换器会存在问题，当接口发布，第一次访问没问题，但是在访问服务就会报错，等后续在研究下 -->
            <bean class="org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider" />
        </jaxrs:providers>
    </jaxrs:server>
    
</beans>

客户端调用示例：

对于get方式的服务，直接在浏览器中输入 http://localhost:8080/phopu/services/phopuService/getUser/101010500 就可以直接看到返回的json字符串 

{"userName":"中文","sex":"m","age":26}

客户端调用代码如下：

public static void getWeatherPostTest() throws Exception{
        String url = "http://localhost:8080/phopu/services/phopuService/getUserPost";
        HttpClient httpClient = HttpClients.createSystem();
        //HttpGet httpGet = new HttpGet(url);  //接口get请求，post not allowed
        HttpPost httpPost = new HttpPost(url);
        httpPost.addHeader(CONTENT_TYPE_NAME, "text/plain");
        StringEntity se = new StringEntity("101010500");
        se.setContentType("text/plain");
        httpPost.setEntity(se);
        HttpResponse response = httpClient.execute(httpPost);

        int status = response.getStatusLine().getStatusCode();
        log.info("[接口返回状态吗] : " + status);

        String weatherInfo = ClientUtil.getReturnStr(response);

        log.info("[接口返回信息] : " + weatherInfo);
    }

客户端调用返回信息如下：

ClientUtil类是我自己封装的一个读取response返回信息的类，encoding是UTF-8

public static String getReturnStr(HttpResponse response) throws Exception {
        String result = null;
        BufferedInputStream buffer = new BufferedInputStream(response.getEntity().getContent());
        byte[] bytes = new byte[1024];
        int line = 0;
        StringBuilder builder = new StringBuilder();
        while ((line = buffer.read(bytes)) != -1) {
            builder.append(new String(bytes, 0, line, HTTP_SERVER_ENCODING));
        }
        result = builder.toString();
        return result;
    }

到这里，就介绍完了，大家手动去操作一下吧，有问题大家一块交流。