第 23 章 Jersey - RESTful Web Services in Java.

23.1. Client 2.x

23.1.1. 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

<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.netkiller</groupId>
	<artifactId>example</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>example</name>
	<url>http://maven.apache.org</url>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>

	<dependencies>

		<dependency>
			<groupId>org.glassfish.jersey.core</groupId>
			<artifactId>jersey-client</artifactId>
			<version>2.25.1</version>
		</dependency>

	</dependencies>
</project>

两个版本差异非常大，本文的例子使用2.23.2

23.1.2. 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);

		}

	}
}	

23.1.3. GET + Auth 用户认证

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);

		}

	}
}

原文出处：Netkiller 系列 手札
本文作者：陈景峯
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