使用 Jersey 呼叫 Restful 服務
阿新 • • 發佈:2022-05-02
第 20 章 Jersey - RESTful Web Services in Java.
目錄
- 20.1. Client
- 20.1.1. Maven 版本
- 20.1.2. GET 操作
- 20.1.3. GET + Auth 使用者認證
https://jersey.java.net/
20.1. Client
20.1.1. Maven 版本
1.x
<!-- https://mvnrepository.com/artifact/com.sun.jersey/jersey-client --> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-client</artifactId> <version>1.19.2</version> </dependency>
2.x 版本
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>2.23.2</version>
</dependency>
兩個版本差異非常大,本文的例子使用2.23.2
20.1.2. GET 操作
package cn.netkiller.jersey; import javax.ws.rs.client.Client; import javax.ws.rs.client.ClientBuilder; import javax.ws.rs.client.Invocation; import javax.ws.rs.client.WebTarget; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; import org.glassfish.jersey.client.ClientConfig; public class JerseyClientGet { public static void main(String[] args) { ClientConfig clientConfig = new ClientConfig(); Client client = ClientBuilder.newClient(clientConfig); WebTarget webTarget = client.target("http://inf.netkiller.cn").path("/list/json/2.html"); Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON); Response response = invocationBuilder.get(); System.out.println(response.getStatus()); System.out.println(response.getStatusInfo()); if (response.getStatus() == 200) { String output = response.readEntity(String.class); System.out.println(output); } } }
20.1.3. GET + Auth 使用者認證
package cn.netkiller.jersey; import javax.ws.rs.client.Client; import javax.ws.rs.client.ClientBuilder; import javax.ws.rs.client.Invocation; import javax.ws.rs.client.WebTarget; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; import org.glassfish.jersey.client.ClientConfig; import org.glassfish.jersey.client.authentication.HttpAuthenticationFeature; public class JerseyClientGetAuth { public static void main(String[] args) { ClientConfig clientConfig = new ClientConfig(); HttpAuthenticationFeature feature = HttpAuthenticationFeature.basic("neo", "chen"); clientConfig.register(feature); Client client = ClientBuilder.newClient(clientConfig); WebTarget webTarget = client.target("http://api.netkiller.cn/v1/withdraw/ping.json").path(""); Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON); Response response = invocationBuilder.get(); System.out.println(response.getStatus()); System.out.println(response.getStatusInfo()); if (response.getStatus() == 200) { String output = response.readEntity(String.class); System.out.println(output); } } }