java post请求传多个参数

在 Java 中发送 POST 请求并传递多个参数可以使用 HttpURLConnection 类。以下是一个简单的代码示例：

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;
public class HttpPost {
   public static void sendPost(String url, Map<String, String> parameters) throws Exception {
      HttpURLConnection httpConn = (HttpURLConnection) new URL(url).openConnection();
      httpConn.setDoOutput(true);
      httpConn.setRequestMethod("POST");
      OutputStream os = httpConn.getOutputStream();
      os.write(getPostData(parameters).getBytes());
      os.flush();
      os.close();
      int responseCode = httpConn.getResponseCode();
      System.out.println("POST Response Code :: " + responseCode);
      if (responseCode == HttpURLConnection.HTTP_OK) {
         System.out.println("POST Request is successful");
      } else {
         System.out.println("POST Request is unsuccessful");
   private static String getPostData(Map<String, String> parameters) throws Exception {
      StringBuilder result = new StringBuilder();
      boolean first = true;
      for (Map.Entry<String, String> entry : parameters.entrySet()) {
         if (first) {
            first = false;
         } else {
            result.append("&");
         result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
         result.append("=");
         result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
      return result.toString();
        Gerry0808