java如何调用https的接口

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猴君
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要调用HTTPS接口,可以使用Java中的HttpURLConnection或HttpClient。 下面是使用HttpURLConnection调用HTTPS接口的示例:

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL;  public class HttpsExample {     public static void main(String[] args) throws IOException {         // 创建URL对象         URL url = new URL("https://api.example.com/endpoint");          // 打开连接         HttpURLConnection connection = (HttpURLConnection) url.openConnection();          // 设置请求方法为GET         connection.setRequestMethod("GET");          // 获取响应码         int responseCode = connection.getResponseCode();         System.out.println("Response Code: " + responseCode);          // 读取响应内容         InputStream inputStream = connection.getInputStream();         BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));         String line;         StringBuilder response = new StringBuilder();         while ((line = reader.readLine()) != null) {             response.append(line);         }         reader.close();          // 输出响应内容         System.out.println("Response Body: " + response.toString());          // 关闭连接         connection.disconnect();     } } 

如果你想要使用HttpClient调用HTTPS接口,可以使用Apache HttpClient库。你可以通过Maven或Gradle添加以下依赖项:

Maven:

<dependency>     <groupId>org.apache.httpcomponents</groupId>     <artifactId>httpclient</artifactId>     <version>4.5.13</version> </dependency> 

Gradle:

implementation 'org.apache.httpcomponents:httpclient:4.5.13' 

下面是使用HttpClient调用HTTPS接口的示例:

import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.conn.ssl.NoopHostnameVerifier; import org.apache.http.conn.ssl.TrustSelfSignedStrategy; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.ssl.SSLContextBuilder; import org.apache.http.util.EntityUtils;  import java.io.IOException;  public class HttpsExample {     public static void main(String[] args) throws IOException {         // 创建HttpClient对象         CloseableHttpClient httpClient = HttpClients.custom()                 .setSSLContext(SSLContextBuilder.create().loadTrustMaterial(new TrustSelfSignedStrategy()).build())                 .setSSLHostnameVerifier(new NoopHostnameVerifier())                 .build();          // 创建HttpGet请求对象         HttpGet httpGet = new HttpGet("https://api.example.com/endpoint");          // 发送请求,获取响应         HttpResponse response = httpClient.execute(httpGet);          // 获取响应内容         HttpEntity entity = response.getEntity();         String responseBody = EntityUtils.toString(entity);          // 输出响应内容         System.out.println("Response Body: " + responseBody);          // 关闭HttpClient         httpClient.close();     } } 

这是两种常用的调用HTTPS接口的方法,你可以根据自己的需求选择其中一种来实现。

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