首先創建一個maven工程
在pom.xml中添加依賴Jar包:
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>2.19</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>2.19</version>
</dependency>
實體類如下:
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
/**
* 場館
*
* @author 盧豔亮
* @version 2015年6月27日 下午3:22:10
*/
@XmlRootElement
@SuppressWarnings("serial")
public class TVenueEntity implements java.io.Serializable {
private long venueId;
/** 場館名稱 */
private String venueName;
/** 1代表主場館 */
private int master;
@XmlElement(name = "venueId")
public long getVenueId() {
return venueId;
}
public void setVenueId(long venueId) {
this.venueId = venueId;
}
@XmlElement(name = "venueName")
public String getVenueName() {
return venueName;
}
public void setVenueName(String venueName) {
this.venueName = venueName;
}
@XmlElement
public int getMaster() {
return master;
}
public void setMaster(int master) {
this.master = master;
}
}
訪問服務的代碼如下:
import java.util.List;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.GenericType;
import javax.ws.rs.core.Response;
import com.wanhang.ydsj.venue.rest.entity.TPlaceEntity;
import com.wanhang.ydsj.venue.rest.entity.TVenueEntity;
public class App {
public static String path = "http://localhost:8888/services/erp/";
public static void main(String[] args) {
// getById();
findByVenue();
}
/**
* 測試返回一個實體對象
*/
public static void getById() {
Client client = ClientBuilder.newClient();
WebTarget target = client.target(path + "venue/1132.json");
Response response = target.request().get();
try {
if (response.getStatus() != 200) {
throw new RuntimeException("Failed with HTTP error code : " + response.getStatus());
}
TVenueEntity venue = response.readEntity(TVenueEntity.class);
System.out.println("The generated id is " + venue.getVenueName());
} finally {
response.close();
client.close(); // 在真正開發中不要每次關閉client,比如HTTP長連接是由client持有的
}
}
/**
* 測試返回一個實體對象列表
*/
public static void findByVenue() {
Client client = ClientBuilder.newClient();
WebTarget target = client.target(path + "venue_3/place.json");
Response response = target.request().get();
try {
if (response.getStatus() != 200) {
throw new RuntimeException("Failed with HTTP error code : " + response.getStatus());
}
List<TPlaceEntity> venues = response.readEntity(new GenericType<List<TPlaceEntity>>(){});
System.out.println("The generated id is " + venues.size());
} finally {
response.close();
client.close();
}
}
}