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java如何设置auther

2026-03-21 18:31:15Java

java如何设置auther

设置 HTTP 认证头（Authorization）

在 Java 中设置 HTTP 请求的 Authorization 头，通常用于身份验证（如 Basic Auth、Bearer Token 等）。以下是几种常见场景的实现方式：

使用 `HttpURLConnection` 设置 Basic Auth

import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Base64;

String username = "user";
String password = "pass";
String authString = username + ":" + password;
String encodedAuth = Base64.getEncoder().encodeToString(authString.getBytes());

URL url = new URL("https://api.example.com");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Authorization", "Basic " + encodedAuth);

使用 `OkHttp` 设置 Bearer Token

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

String token = "your_token_here";
OkHttpClient client = new OkHttpClient();

Request request = new Request.Builder()
    .url("https://api.example.com")
    .addHeader("Authorization", "Bearer " + token)
    .build();

try (Response response = client.newCall(request).execute()) {
    System.out.println(response.body().string());
}

使用 `Apache HttpClient` 设置 OAuth

import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

String oauthToken = "oauth_token_here";
CloseableHttpClient client = HttpClients.createDefault();

HttpGet httpGet = new HttpGet("https://api.example.com");
httpGet.setHeader("Authorization", "OAuth " + oauthToken);

client.execute(httpGet);

使用 `Spring RestTemplate` 设置自定义头

import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.web.client.RestTemplate;

HttpHeaders headers = new HttpHeaders();
headers.set("Authorization", "CustomAuthScheme your_token");
HttpEntity<String> entity = new HttpEntity<>(headers);

RestTemplate restTemplate = new RestTemplate();
String response = restTemplate.exchange(
    "https://api.example.com",
    HttpMethod.GET,
    entity,
    String.class
).getBody();