HTTPClient基本使用
使用maven,在xml中引用
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.2</version> </dependency>
第一个demo
第一个.java文件
package com.httpclient.demo; import org.apache.http.HttpEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClientBuilder; import org.apache.http.util.EntityUtils; import org.testng.annotations.Test; import java.io.IOException; public class HttpClientDemo { @Test public void test01() { //创建get请求 String uri = "https://www.baidu.com"; HttpGet get = new HttpGet(uri); //获取http客户端 CloseableHttpClient client = HttpClientBuilder.create().build(); //响应模型 CloseableHttpResponse response = null; try { //由http客户端,发送get请求 response = client.execute(get); //从响应中,获取响应实体 HttpEntity respEntity = response.getEntity(); String result = EntityUtils.toString(respEntity, "utf-8"); System.out.println(result); } catch (IOException e) { e.printStackTrace(); } } }
执行结果:
将配置文件进行优化
在项目resources目录下,建一个application.properties文件,将自己需要用的常量可以放在配置文件中
在测试类中,将配置文件引入:
@BeforeTest public void beforeClass() { //将配置文件application.properties中,加载进来 bundle = ResourceBundle.getBundle("application", Locale.CHINA); url = bundle.getString("test.url"); }
字符编码:Locale.CHINA,将配置文件中的一些中文进行兼容
这个url这个变量,定义为全局变量,先在@BeforeTest中引入,然后url这个变量就被赋值了。下面就可以继续引用了
获取Cookie
下面👇这个是另一个博主写的:https://segmentfault.com/a/1190000011142669
获取响应的状态码:
//获取响应的状态码,直接在响应response中获取 int statusCode = response.getStatusLine().getStatusCode(); System.out.println("状态码 :" + statusCode);