Java Web 服务客户端基本身份验证

在Java开发中，Web服务客户端基本身份验证是一个常见的需求。通过身份验证，我们可以确保只有经过授权的用户才能访问特定的Web服务。本文将介绍如何在Java中实现Web服务客户端基本身份验证，并提供一个实际案例代码。

java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
public class WebServiceClient {
    public static void main(String[] args) {
        try {
            // 创建URL对象
            URL url = new URL("http://example.com/api/resource");
            
            // 打开连接
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            
            // 设置请求方法
            connection.setRequestMethod("GET");
            
            // 添加身份验证信息
            String username = "admin";
            String password = "password";
            String auth = username + ":" + password;
            byte[] encodedAuth = Base64.getEncoder().encode(auth.getBytes(StandardCharsets.UTF_8));
            String authHeader = "Basic " + new String(encodedAuth);
            connection.setRequestProperty("Authorization", authHeader);
            
            // 发送请求
            int responseCode = connection.getResponseCode();
            
            // 读取响应
            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            StringBuilder response = new StringBuilder();
            while ((line = reader.readLine()) != null) {
                response.append(line);
            }
            reader.close();
            
            // 输出响应
            System.out.println("Response Code: " + responseCode);
            System.out.println("Response Body: " + response.toString());
            
            // 关闭连接
            connection.disconnect();
            
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}