Jersey 极致简单的Restful WebService实现

关于Jersey 的介绍网上很多很多，感兴趣自己搜吧，这里直接上代码比较直观：

1.创建DTO:UserDTO

package org.tshark.framework.ws.user;

import javax.xml.bind.annotation.XmlType;

import org.apache.commons.lang.builder.ToStringBuilder;
import org.tshark.framework.ws.WsConstants;

@XmlType(name = "User",namespace = WsConstants.NAME_SPACE)
public class UserDTO {
	private Long id;
	private String loginName;
	private String name;
	private String email;

	public Long getId() {
		return id;
	}

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

	public String getLoginName() {
		return loginName;
	}

	public void setLoginName(String loginName) {
		this.loginName = loginName;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	@Override
	public String toString() {
		return ToStringBuilder.reflectionToString(this);
	}
}

package org.tshark.framework.ws.user;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriInfo;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.tshark.core.exception.TSharkException;
import org.tshark.framework.ws.WsConstants;

@Path("/users")
public class UserWebService {
	protected final Log log = LogFactory.getLog(getClass());

	@Context
	private UriInfo uriInfo;

	@GET
	@Path("{id}")
	@Produces({ MediaType.APPLICATION_JSON,MediaType.APPLICATION_XML + WsConstants.CHARSET })
	public UserDTO getUser(@PathParam("id") Long id) {
		try {
			log.debug("GetUser Id:" + id);
			UserDTO user = new UserDTO();
			user.setId(1l);
			user.setLoginName("LoginName");
			user.setName("Tiger");
			user.setEmail("Tiger email");
			return user;
		} catch (RuntimeException e) {
			log.error(e.getMessage(),e);
			throw new TSharkException(e);
		}
	}
}

package org.tshark.framework.ws.user;

import javax.ws.rs.core.MediaType;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.filter.HTTPBasicAuthFilter;

public class UserClient {
	private WebResource client = Client.create().resource("http://localhost:8888/tshark2/rs");

	/**
	 * 获取用户.
	 */
	public UserDTO getUser(Long id) {
		UserDTO user = client.path("/users/" + id).accept(MediaType.APPLICATION_JSON).get(UserDTO.class);
		//client.addFilter(new HTTPBasicAuthFilter("tomcat","tomcat"));
		System.out.println(user);
		return user;
	}

	public static void main(String[] args) {
		UserClient userClient = new UserClient();
		userClient.getUser(1l);
	}
}

web.xml

	<!-- Jersey 配置 -->
	<servlet>
		<servlet-name>JerseyServlet</servlet-name>
		<servlet-class>com.sun.jersey.spi.spring.container.servlet.SpringServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>JerseyServlet</servlet-name>
		<url-pattern>/rs/*</url-pattern>
	</servlet-mapping>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd"
	default-lazy-init="true">
	<description>Jersey Restful Service Bean的配置文件 </description>

	<bean class="org.tshark.framework.ws.user.UserWebService" />

</beans>