webservice之jax-rs实现方式

1.什么叫restful风格

restful是一组架构约束条件和原则,满足这些约束条件和原则的应用程序即是restful风格。

2.jax-rs实现步骤

1.创建一个简单应用(略)

2.添加依赖jar包

<!--cxf的客户端和服务端  -->
 <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-rs-client</artifactId>
  <version>3.0.1</version>
</dependency>
<!-- CXF的json转换器,拓展json -->
<dependency>
  <groupId>org.apache.cxf</groupId>
  <artifactId>cxf-rt-rs-extension-providers</artifactId>
  <version>3.0.1</version>
</dependency> <!-- 转换json的工具包,被cxf-rt-rs-extension-providers包依赖 --> <dependency>   <groupId>org.codehaus.jettison</groupId>   <artifactId>jettison</artifactId>   <version>1.3.7</version> </dependency> <dependency>
  <groupId>com.fasterxml.jackson.core</groupId>   <artifactId>jackson-core</artifactId>   <version>2.8.1</version>
</dependency>
<dependency>  <groupId>com.fasterxml.jackson.core</groupId>   <artifactId>jackson-databind</artifactId>   <version>2.8.1</version> </dependency> <dependency>   <groupId>com.fasterxml.jackson.core</groupId>   <artifactId>jackson-annotations</artifactId>   <version>2.8.1</version>
</dependency> <dependency>   <groupId>com.alibaba</groupId>   <artifactId>fastjson</artifactId>   <version>1.2.23</version> </dependency>

3.配置cxf的servlet

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

4.配置webservice服务

<jaxrs:server id="userService">
    <jaxrs:serviceBeans>
        <bean class="cn.cxf.rs.interfaces.impl.UserServiceImpl"></bean>
        <bean class="cn.cxf.rs.interfaces.impl.PetImpl"></bean>
    </jaxrs:serviceBeans>
    <jaxrs:inInterceptors>
        <bean class="org.apache.cxf.interceptor.LoggingInInterceptor" />
    </jaxrs:inInterceptors>
    <jaxrs:outInterceptors>
        <bean class="org.apache.cxf.interceptor.LoggingOutInterceptor" />
    </jaxrs:outInterceptors>
</jaxrs:server>

5.代码编写

接口定义

@Path("/userService")
@Produces("*/*")
public interface IUserService {
    @POST
    @Path("/saveUser")
    @Consumes({"application/json"})
    @Produces({"application/json"})
    User saveUser( User user);
    

    @POST
    @Path("/pet/{petId}")
    @Consumes({MediaType.APPLICATION_FORM_URLENCODED,MediaType.APPLICATION_XML})
    @Produces({"application/json"})
    void pet(@PathParam("petId") String petId,@HeaderParam("xcl") String xcl,User user);
    
    
    @PUT
    @Path("/updateUser")
    @Consumes({"application/xml","application/json"})
    @Produces({"application/json"})
    void updateUser(User user);

    
    @GET
    @Path("/findAllUsers")
    @Produces({"application/json"})
    List<User> findAllUsers(@QueryParam("status") String[] status);

    
    @GET
    @Path("/findUserById/{id}/{name}")
    @Produces({"application/json"})
    @Consumes("applcation/xml")
    User findUserById(@PathParam("id") Integer id,@PathParam("name") String name);
    
    @DELETE
    @Path("/user/{id}")
    @Consumes({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON})
    void deleteUser(@PathParam("id") Integer id);
    
    @GET
    @Path("/findUserByArray")
    @Consumes({"applcation/xml","applcation/json"})
    @Produces({"application/json"})
    User findUserByArray(@QueryParam("name") String name,@QueryParam("id") String id);
    
    
    @POST  
    @Path("/upload")  
    @Consumes({MediaType.MULTIPART_FORM_DATA,MediaType.APPLICATION_FORM_URLENCODED})  
    void fileUpLoad( @Multipart("file") Attachment  image,@Multipart("id") String id,@Multipart("name") String name);
    
    @GET 
    @Path("/Context")  
    @Consumes({MediaType.APPLICATION_XML})  
    void contextTest( @MatrixParam("mp") String[] mp,@CookieParam("cookie") Cookie cookie);
    
    @POST  
    @Path("/testMultipart")  
    @Consumes({MediaType.MULTIPART_FORM_DATA})  
    void testMultipart( @Multipart(value="file") Attachment  image);
    
    
    @POST  
    @Path("/postAttribute")  
    @Consumes({MediaType.APPLICATION_FORM_URLENCODED})  
    @Produces({MediaType.APPLICATION_JSON})
    User postAttribute(@FormParam("name")String name,@FormParam("id")String id);
    
    @GET 
    @Path("/getById/{id}")  
    @Consumes({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON})  
    User getById(@PathParam("id") String id);
    
    
    @GET 
    @Path("/getMap")  
    @Consumes({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON})
    @XmlJavaTypeAdapter(MapAdapter.class)
    Map<String, Object> getMap();
    
    
    @GET
    @Path("/getByHeader/{id}")
    @Consumes({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON})
    User getByHeader(@PathParam("id") Integer id, @HeaderParam("xcl") String xcl);
    
    @POST
    @Path("/getListByForm")
    @Consumes({"application/xml","application/json",MediaType.APPLICATION_FORM_URLENCODED})
    List<User> getListByForm( @FormParam("name")String name,@FormParam("id")String id);
    
    @POST
    @Path("/getListByBody")
    @Consumes({"application/json"})
    @Produces("application/json")
    List<User> getListByBody(User user);
    
    @POST
      @Path("/getBodyByList")
      @Consumes({"application/xml","application/json",MediaType.APPLICATION_FORM_URLENCODED})
    @XmlJavaTypeAdapter(MapAdapter.class)
    User getBodyByList(List<User> users);

}

接口实现

public class UserServiceImpl implements IUserService {

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

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

	public List<User> findAllUsers(String[] status) {
		for (String string : status) {
			System.out.println(string);
		}
		List<User> users = new ArrayList<User>();
		User user1 = new User();
		user1.setId(1);
		user1.setUsername("小强");
		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);
		return users;
	}

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

	public User findUserById(Integer id,String name) {
		if (id == 1) {
			User user1 = new User();
			user1.setId(1);
			user1.setUsername("小明");
			user1.setCity("北京");
			String userString = JSON.toJSONString(user1);
			return user1;
		}
		return null;
	}

	public void pet(String petId, String xcl ,User user) {
		System.out.println(petId+","+xcl);
	}

	public User findUserByArray(String name,String id) {
		User user = new User();
		user.setId(Integer.parseInt(id));
		user.setUsername(name);
		return user;
	}

	public void fileUpLoad(Attachment  image,String id,String name) {
		ContentDisposition  contentDisposition = image.getContentDisposition();
		System.out.println(contentDisposition.toString());
		MediaType type = image.getContentType();
		MultivaluedMap<String, String> maps = image.getHeaders();
		Set<String> keysSet = maps.keySet();
		for (String string : keysSet) {
			System.out.println(maps.get(string).toString());
		}
		Object object = image.getObject();
		System.out.println(object);
		System.out.println(id+","+type.toString());
		/*try{
			FileOutputStream outputStream = new FileOutputStream("d:/new.png");
			DataHandler handler = image.getDataHandler();
			InputStream in = handler.getInputStream();
			byte[] bytes = new byte[1024];
			int longer = 0;
			while ((longer=in.read(bytes))!=-1) {
					outputStream.write(bytes, 0, longer);
			}
			in.close();
			outputStream.close();
			System.out.println(handler.getName());
		}catch(Exception e){
			throw new RuntimeException(e);
		}
		*/
		
	}

	public void contextTest(String[] mp,Cookie cookie) {
		for (String string : mp) {
			System.out.println(string);
		}
		System.out.println(cookie.getValue());
		
	}

	public void testMultipart(Attachment image) {
		try {
			/*File file = (File) image.getObject();
			System.out.println(file.getName());*/
			System.out.println(image.getContentId());
			DataHandler handler = image.getDataHandler();
			String type = handler.getContentType();
			String name = handler.getName();
			System.out.println(type+","+name);
		} catch (Exception e) {
			throw new RuntimeException(e.getMessage());
		}
		
		
	}

	public User postAttribute(String name, String id) {
		System.out.println(name+","+id);
		User user = new User();
		user.setId(11);
		user.setUsername("hah");
		return user;	
	}

	public User getById(String id) {
		User user = new User();
		if(id.equals("1")){
			user.setUsername("xcl");
		}
		return user;
	}

	public Map<String, Object> getMap() {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("name", "xcl");
		map.put("id", "11");
		return map;
	}

	public User getByHeader(Integer id, String xcl) {
		System.out.println(id+","+xcl);
		return null;
	}

	public List<User> getListByForm(String name, String id) {
		List<User> users = new ArrayList<User>();
		User user1 = new User();
		user1.setId(1);
		user1.setUsername("小强");
		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);
		return users;
	}

	public List<User> getListByBody(User user) {
		List<User> users = new ArrayList<User>();
		User user1 = new User();
		user1.setId(1);
		user1.setUsername("小强");
		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);
		return users;
	}

	public User getBodyByList(List<User> users) {
		User user = new User();
		user.setId(11);
		user.setUsername("xcl");
		return user;
	}

6.注解讲解

@Path("/userService"):路径
@Produces("*/*"):产生内容 @Produces({"application/json"}),@Produces({"application/xml"});
@Consumes({"application/xml","application/json"}):消费内容;MediaType.APPLICATION_FORM_URLENCODED{表单内容}
MediaType.MULTIPART_FORM_DATA{附件内容}
@XmlRootElement(name="User")实体类根元素
@POST:post请求方式
@PUT:put请求方式,一般用于存储{不常用}
@GET:get请求方式
@DELETE:delete请求方式,一般用于删除{不常用}


 

原文地址:https://www.cnblogs.com/xiechenglin/p/10501805.html

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