您提供的链接指向了Apache HttpClient的源码。Apache HttpClient是一个开源的Java库,用于发送HTTP请求和接收HTTP响应。它提供了丰富的功能,包括支持各种HTTP方法、处理重定向、设置超时、处理Cookies等。
HttpClient 是 Java 中用于发送 HTTP 请求的库,以下是一个简单的 HttpClient 示例,展示了如何使用它发送 GET 和 POST 请求:
import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.URI; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.util.EntityUtils; public class HttpClientExample { private static final String USER_AGENT = "Mozilla/5.0"; public static void main(String[] args) throws Exception { HttpClient httpclient = new DefaultHttpClient(); // 发送 GET 请求 HttpGet httpget = new HttpGet("http://www.example.com"); httpget.addHeader("UserAgent", USER_AGENT); HttpResponse response = httpclient.execute(httpget); System.out.println("GET Response Status: " + response.getStatusLine().getStatusCode()); BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); String line = null; while ((line = reader.readLine()) != null) { System.out.println(line); } reader.close(); // 发送 POST 请求 HttpPost httppost = new HttpPost("http://www.example.com"); httppost.addHeader("UserAgent", USER_AGENT); httppost.setEntity(new StringEntity("{"key":"value"}")); response = httpclient.execute(httppost); System.out.println("POST Response Status: " + response.getStatusLine().getStatusCode()); reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); while ((line = reader.readLine()) != null) { System.out.println(line); } reader.close(); } }
这个示例使用了 Apache HttpClient 库,首先导入了所需的类,然后创建了一个 HttpClient 实例,我们创建了一个 HttpGet 对象来发送 GET 请求,并设置了 UserAgent 头,我们执行请求并打印响应状态码和响应内容,同样的过程也适用于 HttpPost 对象,用于发送 POST 请求。
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