java爬虫模拟post请求_java爬虫之使用HttpClient模拟浏览器发送请求方法详解

0. 摘要

0.1 添加依赖

org.apache.httpcomponents

httpclient

4.5.2

0.2 代码

//1. 打开浏览器 创建httpclient对象

CloseableHttpClient httpClient = HttpClients.createDefault();

//2. 输入网址

HttpGet httpGet = new HttpGet("");

//3. 发送请求

CloseableHttpResponse httpResponse = httpClient.execute(httpGet);

//4. 响应结果

HttpEntity httpEntity = httpResponse.getEntity();

//5. 解析结果

String result = EntityUtils.toString(httpEntity, "utf-8");

System.out.println(result);

1. 实操

1.1 添加依赖

1.1.1 找到 pom.xml 添加依赖

1.1.2 依赖代码

org.apache.httpcomponents

httpclient

4.5.2

1.2 添加 TestHttpClient 类

1.2.1 创建类文件 com.aifu.TestHttpClient

1.2.2 添加代码

public static void main(String[] args) throws IOException {

//1. 打开浏览器 创建httpclient对象

CloseableHttpClient httpClient = HttpClients.createDefault();

//2. 输入网址

HttpGet httpGet = new HttpGet("");

//3. 发送请求

CloseableHttpResponse httpResponse = httpClient.execute(httpGet);

//4. 响应结果

HttpEntity httpEntity = httpResponse.getEntity();

//5. 解析结果

String result = EntityUtils.toString(httpEntity, "utf-8");

System.out.println(result);

}

1.3 运行

1.3.1 点击绿标运行 或者快捷键 ctrl + alt +F10