使用Java HttpUrlConnection使用令牌發送GET請求

Question

我必須使用RESTful Web服務，該服務使用來自Java應用程序的基於令牌的身份驗證。 我可以通過這種方式成功獲得令牌：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public void getHttpCon() throws Exception{

String POST_PARAMS = "grant_type=password&username=someusrname&password=somepswd&scope=profile";
URL obj = new URL("http://someIP/oauth/token");
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
con.setRequestMethod("POST");
        con.setRequestProperty("Content-Type", "application/json;odata=verbose");
con.setRequestProperty("Authorization",
        "Basic Base64_encoded_clientId:clientSecret");
con.setRequestProperty("Accept",
        "application/x-www-form-urlencoded");

// For POST only - START
con.setDoOutput(true);
OutputStream os = con.getOutputStream();
os.write(POST_PARAMS.getBytes());
os.flush();
os.close();
// For POST only - END

int responseCode = con.getResponseCode();
System.out.println("POST Response Code :: " + responseCode);

if (responseCode == HttpURLConnection.HTTP_OK) { //success
    BufferedReader in = new BufferedReader(new InputStreamReader(
            con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();

    // print result
    System.out.println(response.toString());
} else {
    System.out.println("POST request not worked");
}
}    

但我找不到在get請求中正確發送此令牌的方法。 我在嘗試什么：

    public StringBuffer getSmth(String urlGet, StringBuffer token) throws IOException{

    StringBuffer response = null;
    URL obj = new URL(urlGet);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();
    con.setRequestMethod("GET");

    String authString = "Bearer " + Base64.getEncoder().withoutPadding().encodeToString(token.toString().getBytes("utf-8"));
    con.setRequestProperty("Authorization", authString);

    int responseCode = con.getResponseCode();
    System.out.println("GET Response Code :: " + responseCode);
    if (responseCode == HttpURLConnection.HTTP_OK) { // success
        BufferedReader in = new BufferedReader(new InputStreamReader(
                con.getInputStream()));
        String inputLine;
        response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

    } else {
        System.out.println("GET request not worked");
    }
    return response;
}

不起作用。 任何幫助解決這個問題將受到高度贊賞。

Answer 1

您應該將令牌添加到請求網址：

String param = "?Authorization=" + token;
URL obj = new URL(urlGet + param);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
conn.setRequestMethod("GET");

作為替代方案，使用restTemplate發送get請求：

RestTemplate restTemplate = new RestTemplate();  
HttpHeaders headers = new HttpHeaders();  
headers.add("Authorization", "Basic " + token);
HttpEntity<String> request = new HttpEntity<String>(headers);  
ResponseEntity<String> response = restTemplate.exchange(urlGet, HttpMethod.GET,  request, String.class);

Answer 2

解決了。 除了令牌，服務器返回一些額外的字 我所要做的就是從收到的答案中提取純令牌並粘貼它而不進行任何編碼：String authString =“Bearer”+ pure_token;