WebService 之CXF(rs)之HelloWorld

1.建立mavenjava项目

<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>cn.itcast.maven</groupId>
  <artifactId>cxf_rs_HelloWorld</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>cxf_rs_HelloWorld</name>
  
  <dependencies>
        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-frontend-jaxrs</artifactId>
            <version>3.0.1</version>
        </dependency>
 
        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-transports-http-jetty</artifactId>
            <version>3.0.1</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.12</version>
        </dependency>
        
        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-rs-client</artifactId>
            <version>3.0.1</version>
        </dependency>

        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-rs-extension-providers</artifactId>
            <version>3.0.1</version>
        </dependency>

        <dependency>
            <groupId>org.codehaus.jettison</groupId>
            <artifactId>jettison</artifactId>
            <version>1.3.7</version>
        </dependency>
  </dependencies>
</project>

### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=c:/mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### set log levels - for more verbose logging change 'info' to 'debug' ###

log4j.rootLogger=info, stdout

2.创建实体类和服务接口

package cn.itcast.cxf.domain;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name = "Car")
public class Car {
    private Integer id;
    private String carName;
    private Double price;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getCarName() {
        return carName;
    }

    public void setCarName(String carName) {
        this.carName = carName;
    }

    public Double getPrice() {
        return price;
    }

    public void setPrice(Double price) {
        this.price = price;
    }

    @Override
    public String toString() {
        return "Car [id=" + id + ", carName=" + carName + ", price=" + price + "]";
    }

}

package cn.itcast.cxf.domain;

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.annotation.XmlRootElement;
//指定序列化(转换xml或json)对象的名字
@XmlRootElement(name = "User")
public class User {
    private Integer id;
    private String username;
    private String city;

    private List<Car> cars = new ArrayList<Car>();

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public List<Car> getCars() {
        return cars;
    }

    public void setCars(List<Car> cars) {
        this.cars = cars;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", username=" + username + ", city=" + city + ", cars=" + cars + "]";
    }

}

package cn.itcast.cxf.service;

import java.util.List;

import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;

import cn.itcast.cxf.domain.User;

@Path("/userService")//服务访问资源路径
@Produces("*/*")生成(返回值)可以不写
public interface IUserService {

    @POST
    @Path("/user")///userService/user
    @Consumes({ "application/xml", "application/json" })  //消费(客户端传过来的数据,即接受的数据)
    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" })//产生(返回到客户端的数据的格式)
    public List<User> findAllUsers();

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

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

package cn.itcast.cxf.service;

import java.util.ArrayList;
import java.util.List;

import cn.itcast.cxf.domain.Car;
import cn.itcast.cxf.domain.User;

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("保时捷");
        car1.setPrice(1000000d);
        carList1.add(car1);
        Car car2 = new Car();
        car2.setId(102);
        car2.setCarName("宝马");
        car2.setPrice(400000d);
        carList1.add(car2);
        user1.setCars(carList1);

        users.add(user1);

        User user2 = new User();
        user2.setId(2);
        user2.setUsername("小丽");
        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);
    }

}

@GET 查询 @PUT 修改 @POST 增加 @DELETE 删除

3.发布服务

package cn.itcast.cxf.rs.server;

import org.apache.cxf.interceptor.LoggingInInterceptor;
import org.apache.cxf.interceptor.LoggingOutInterceptor;
import org.apache.cxf.jaxrs.JAXRSServerFactoryBean;

import cn.itcast.cxf.domain.Car;
import cn.itcast.cxf.domain.User;
import cn.itcast.cxf.service.IUserService;
import cn.itcast.cxf.service.UserServiceImpl;

public class RS_Server {
    public static void main(String[] args) {
        IUserService userService = new UserServiceImpl();

        JAXRSServerFactoryBean restServer = new JAXRSServerFactoryBean();
        restServer.setResourceClasses(User.class, Car.class);
        restServer.setServiceBean(userService);
        restServer.setAddress("http://localhost:9999/");

        // 打印日志
        restServer.getInInterceptors().add(new LoggingInInterceptor());
        restServer.getOutInterceptors().add(new LoggingOutInterceptor());

        restServer.create();
    }
}

4.客户端程序的编写Webclient工具类使用

package cn.itcast.cxf.rs.client;

import java.util.Collection;

import javax.ws.rs.core.MediaType;

import org.apache.cxf.jaxrs.client.WebClient;

import cn.itcast.cxf.domain.User;

public class RS_Client {
    public static void main(String[] args) {
        User user = new User();
        user.setId(3);
        user.setUsername("小美");
        user.setCity("深圳");

        // 根据id查询
        WebClient client = WebClient.create("http://localhost:9999/");
        User responseUser = client.path("userService/user/1").accept(MediaType.APPLICATION_XML).get(User.class);
        System.out.println(responseUser);

        // 增加
        WebClient.create("http://localhost:9999/").path("userService/user").accept(MediaType.APPLICATION_XML)
                .post(user);

        // 修改
        WebClient.create("http://localhost:9999/").path("userService/user").type(MediaType.APPLICATION_JSON).put(user);

        // 删除
        WebClient.create("http://localhost:9999/").path("userService/user/1").accept(MediaType.APPLICATION_XML)
                .delete();

        // 查询所有用户
        Collection<? extends User> users = WebClient.create("http://localhost:9999/").path("userService/user")
                .accept(MediaType.APPLICATION_JSON).getCollection(User.class);
        System.out.println(users);
    }
}