java如何访问https

在Java中，访问HTTPS资源通常使用`java.net.HttpURLConnection`类或者更现代的`java.net.http.HttpClient`类。以下是如何使用这两种方法访问HTTPS资源的基本示例。

使用`HttpURLConnection`

```java

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

public class HttpsExample {

public static void main(String[] args) {

try {

URL url = new URL("https://example.com");

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

connection.setRequestMethod("GET");

int responseCode = connection.getResponseCode();

System.out.println("Response Code : " + responseCode);

BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));

String inputLine;

StringBuffer response = new StringBuffer();

while ((inputLine = in.readLine()) != null) {

response.append(inputLine);