接入duros oauth2.0 java 代码 带参数

以下是使用Java代码接入Duros OAuth2.0并带参数的示例：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

public class DurosOAuth2Example {
    
    private static final String CLIENT_ID = "your_client_id";
    private static final String CLIENT_SECRET = "your_client_secret";
    private static final String REDIRECT_URI = "your_redirect_uri";
    
    public static void main(String[] args) {
        try {
            // Build the authorization URL
            String authorizationUrl = buildAuthorizationUrl();
            
            // Print the authorization URL to the console and prompt the user to visit it
            System.out.println("Visit the following URL to authorize the application: " + authorizationUrl);
            System.out.println("Enter the authorization code:");
            
            // Read the authorization code from the console
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            String authorizationCode = reader.readLine().trim();
            
            // Exchange the authorization code for an access token
            String accessToken = exchangeAuthorizationCodeForAccessToken(authorizationCode);
            
            // Use the access token to make API requests
            String apiUrl = "https://api.duros.io/v1/users/me?";
            Map<String, String> parameters = new HashMap<String, String>();
            parameters.put("param1", "value1");
            parameters.put("param2", "value2");
            String response = makeApiRequest(apiUrl, accessToken, parameters);
            
            // Print the API response to the console
            System.out.println("API response: " + response);
            
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    private static String buildAuthorizationUrl() throws MalformedURLException {
        StringBuilder urlBuilder = new StringBuilder();
        urlBuilder.append("https://duros.io/oauth2/authorize?");
        urlBuilder.append("response_type=code");
        urlBuilder.append("&client_id=").append(CLIENT_ID);
        urlBuilder.append("&redirect_uri=").append(URLEncoder.encode(REDIRECT_URI, "UTF-8"));
        urlBuilder.append("&scope=user");
        return urlBuilder.toString();
    }
    
    private static String exchangeAuthorizationCodeForAccessToken(String authorizationCode) throws IOException {
        StringBuilder urlBuilder = new StringBuilder();
        urlBuilder.append("https://duros.io/oauth2/token?");
        urlBuilder.append("grant_type=authorization_code");
        urlBuilder.append("&code=").append(authorizationCode);
        urlBuilder.append("&client_id=").append(CLIENT_ID);
        urlBuilder.append("&client_secret=").append(CLIENT_SECRET);
        urlBuilder.append("&redirect_uri=").append(URLEncoder.encode(REDIRECT_URI, "UTF-8"));
        URL url = new URL(urlBuilder.toString());
        URLConnection connection = url.openConnection();
        connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        connection.setDoOutput(true);
        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line = null;
        StringBuilder responseBuilder = new StringBuilder();
        while ((line = reader.readLine()) != null) {
            responseBuilder.append(line);
        }
        String response = responseBuilder.toString();
        int accessTokenStartIndex = response.indexOf("access_token") + "access_token".length() + 3;
        int accessTokenEndIndex = response.indexOf(",", accessTokenStartIndex) - 1;
        String accessToken = response.substring(accessTokenStartIndex, accessTokenEndIndex);
        return accessToken;
    }
    
    private static String makeApiRequest(String apiUrl, String accessToken, Map<String, String> parameters) throws IOException {
        StringBuilder urlBuilder = new StringBuilder(apiUrl);
        boolean isFirstParameter = true;
        for (Map.Entry<String, String> parameter : parameters.entrySet()) {
            if (isFirstParameter) {
                urlBuilder.append("?");
                isFirstParameter = false;
            } else {
                urlBuilder.append("&");
            }
            urlBuilder.append(parameter.getKey()).append("=").append(parameter.getValue());
        }
        URL url = new URL(urlBuilder.toString());
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("Authorization", "Bearer " + accessToken);
        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line = null;
        StringBuilder responseBuilder = new StringBuilder();
        while ((line = reader.readLine()) != null) {
            responseBuilder.append(line);
        }
        String response = responseBuilder.toString();
        return response;
    }
    
}

在上面的代码中，您需要将 `your_client_id`，`your_client_secret` 和 `your_redirect_uri` 替换为您在 Duros 开发者门户中创建的 OAuth2.0 应用程序的客户端 ID、客户端密钥和重定向URI。还可以设置请求的参数，这些参数将作为查询参数附加到 API URL 中。

该示例使用了Java的 `java.net` 包中的类来构建HTTP请求和读取响应。请注意，在实际应用程序中，您可能需要使用更专业的HTTP客户端库。