生成java代码 调用post接口,查询参数是AccessKey,timestamp,nonce,sign . 标头是hsPartyId. 请求正文requestBody是json格式
时间: 2024-06-11 18:05:55 浏览: 23
以下是生成Java代码调用POST接口的示例,包括查询参数、标头和请求正文:
```
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import org.json.JSONObject;
public class PostRequestExample {
public static void main(String[] args) throws Exception {
String urlString = "http://example.com/api";
String accessKey = "your_access_key";
String secretKey = "your_secret_key";
String hsPartyId = "your_hs_party_id";
// Generate query parameters
Map<String, String> queryParams = new HashMap<>();
queryParams.put("AccessKey", accessKey);
queryParams.put("timestamp", String.valueOf(System.currentTimeMillis()));
queryParams.put("nonce", String.valueOf(new Random().nextInt(10000)));
queryParams.put("sign", generateSign(secretKey, queryParams));
// Generate request body
JSONObject requestBody = new JSONObject();
requestBody.put("key1", "value1");
requestBody.put("key2", "value2");
// Create URL
String urlWithParams = urlString + "?" + getQueryString(queryParams);
URL url = new URL(urlWithParams);
// Create connection and set headers
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("hsPartyId", hsPartyId);
connection.setRequestProperty("Content-Type", "application/json");
connection.setDoOutput(true);
// Write request body to connection
byte[] requestBodyBytes = requestBody.toString().getBytes();
connection.setRequestProperty("Content-Length", String.valueOf(requestBodyBytes.length));
connection.getOutputStream().write(requestBodyBytes);
// Read response from connection
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
StringBuilder responseBuilder = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
responseBuilder.append(line);
}
reader.close();
// Print response
String response = responseBuilder.toString();
System.out.println(response);
}
private static String generateSign(String secretKey, Map<String, String> queryParams) throws NoSuchAlgorithmException {
StringBuilder sb = new StringBuilder();
for (String key : queryParams.keySet()) {
sb.append(key).append("=").append(queryParams.get(key)).append("&");
}
sb.append("key=").append(secretKey);
String str = sb.toString();
MessageDigest md = MessageDigest.getInstance("SHA-256");
byte[] hashBytes = md.digest(str.getBytes());
StringBuilder hexString = new StringBuilder();
for (byte b : hashBytes) {
hexString.append(String.format("%02X", b));
}
return hexString.toString();
}
private static String getQueryString(Map<String, String> queryParams) {
StringBuilder sb = new StringBuilder();
for (String key : queryParams.keySet()) {
sb.append(key).append("=").append(queryParams.get(key)).append("&");
}
return sb.toString();
}
}
```
注意替换以下变量:
- `urlString`:要访问的API的URL地址。
- `accessKey`:您的API访问密钥。
- `secretKey`:您的API密钥。
- `hsPartyId`:您的hsPartyId标头的值。
- `requestBody`:请求正文的JSON对象,用于提交到API。
此代码将生成一个POST请求,其中包含查询参数、标头和请求正文。查询参数将自动添加到URL中,标头将添加到请求中,请求正文将作为JSON对象写入连接的输出流中。此代码还包括生成签名的方法,该签名将使用SHA-256算法从查询参数和密钥生成,并将其添加为查询参数之一。最后,该代码将从连接的输入流中读取响应,并将其打印到控制台上。
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