Spring整合web Service的 Jax-rs規範

服務端

新增依賴

1. 匯入jaxrs的支援包
2. 匯入轉化json 的支援包

<dependencies>
    <!-- cxf 進行rs開發 必須匯入  -->
    <dependency>
        <groupId>org.apache.cxf</groupId>
        <artifactId>cxf-rt-frontend-jaxrs</artifactId>
        <version>3.0.1</version
 
>
    </dependency>
    <!-- 日誌引入  -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.12</version>
    </dependency>
    <!-- 擴充套件json提供者 -->
    <dependency>
 

        <groupId>org.apache.cxf</groupId>
        <artifactId>cxf-rt-rs-extension-providers</artifactId>
        <version>3.0.1</version>
    </dependency>
    <!-- 轉換json工具包，被extension providers 依賴 -->
    <dependency>
        <groupId>org.codehaus.jettison</groupId
 
>
        <artifactId>jettison</artifactId>
        <version>1.3.7</version>
    </dependency>

    <!-- spring 核心 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.2.4.RELEASE</version>
    </dependency>
    <!-- spring web整合 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>4.2.4.RELEASE</version>
    </dependency>
</dependencies>

在web.xml新增配置

    <servlet>
        <servlet-name>cxfservlet</servlet-name>
        <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>cxfservlet</servlet-name>
        <url-pattern>/rs/*</url-pattern>
    </servlet-mapping>

    <!-- 1. 配置springioc容器 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

書寫實體類,服務介面和實現

實體類

• 添加註解 @XmlRootElement 指定根元素
  
  • 作用：客戶端與服務端傳遞物件資料時候，
    序列化為xml或json的根元素的名稱

@XmlRootElement(name = "User")
public class User {
    private Integer id;
    private String username;
    private String city;
    ......
}
@XmlRootElement(name = "Car")
public class Car {
    private Integer id;
    private String carName;
    private Double price;
    ......
}

服務介面和實現

• 介面

@Path("/userService")
@Produces("*/*")
public interface IUserService {

    @POST
    @Path("/user")
    @Consumes({ "application/xml", "application/json" })
    public void saveUser(User user);

    @PUT
    @Path("/user")
    @Consumes({ "application/xml", "application/json" })
    public void updateUser(User user);

    @GET
    @Path("/user")
    @Produces({ "application/xml", "application/json" })
    public List<User> findAllUsers();

    @GET
    @Path("/user/{id}")
    @Consumes("application/xml")
    @Produces({ "application/xml", "application/json" })
    public User finUserById(@PathParam("id") Integer id);

    @DELETE
    @Path("/user/{id}")
    @Consumes({"application/xml", "application/json"})
    public void deleteUser(@PathParam("id") Integer id);
}

• 實現

public class UserServiceImpl implements IUserService {

    public void saveUser(User user) {
        System.out.println("save user:" + user);
    }

    public void updateUser(User user) {
        System.out.println("update user:" + user);
    }

    public List<User> findAllUsers() {
        List<User> users = new ArrayList<User>();
        User user1 = new User();
        user1.setId(1);
        user1.setUsername("小明");
        user1.setCity("北京");

        List<Car> carList1 = new ArrayList<Car>();
        Car car1 = new Car();
        car1.setId(101);
        car1.setCarName("保時捷");
        car1.setPrice(1000000d);
        carList1.add(car1);
        Car car2 = new Car();
        car2.setId(102);
        car2.setCarName("寶馬");
        car2.setPrice(400000d);
        carList1.add(car2);
        user1.setCars(carList1);

        users.add(user1);

        User user2 = new User();
        user2.setId(2);
        user2.setUsername("小麗");
        user2.setCity("上海");
        users.add(user2);

        return users;
    }

    public User finUserById(Integer id) {
        if (id == 1) {
            User user1 = new User();
            user1.setId(1);
            user1.setUsername("小明");
            user1.setCity("北京");
            return user1;
        }
        return null;
    }

    public void deleteUser(Integer id) {
        System.out.println("delete user id :" + id);
    }
}

啟動專案釋出服務

客戶端

新增依賴

<dependencies>
        <!-- cxf 進行rs開發 必須匯入  -->
        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-frontend-jaxrs</artifactId>
            <version>3.0.1</version>
        </dependency>
        <!-- 日誌引入  -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.12</version>
        </dependency>

        <!-- 客戶端 -->
        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-rs-client</artifactId>
            <version>3.0.1</version>
        </dependency>

        <!-- 擴充套件json提供者 -->
        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-rs-extension-providers</artifactId>
            <version>3.0.1</version>
        </dependency>

        <!-- 轉換json工具包，被extension providers 依賴 -->
        <dependency>
            <groupId>org.codehaus.jettison</groupId>
            <artifactId>jettison</artifactId>
            <version>1.3.7</version>
        </dependency>

        <!-- spring 核心 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- spring web整合 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- spring 整合junit  -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- junit 開發包 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
  </dependencies>

  <build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                    <showWarnings>true</showWarnings>
                </configuration>
            </plugin>


            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <!-- 指定埠 -->
                    <port>8080</port>
                    <!-- 請求路徑 -->
                    <path>/</path>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
  </build>

書寫實體類 然後junit測試直接呼叫服務

跟rs的獨立程式呼叫的方法一樣