CKafka系列学习文章 - 手动拼接和自动拼接请求URL（十）

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

public class ToInterface {
      
    public static void main(String[] args) {
        String str =sendGet("https://ckafka.api.qcloud.com/v2/index.php", "Action=GetGroupOffsets&Nonce=1567680660&Region=ap-guangzhou&SecretId=AKIDKTM0OYJ6SaaKnyqZx5wYx61hxxxxxXP2&SignatureMethod=HmacSHA256&Timestamp=1567680660&group=console-consumer-2529&instanceId=ckafka-3vekvxxx&Signature=%2Bdyj%2B%2FUoG58HJwHyhzoZGcbjwQiScJhLqxxxxxx96jo%3D");
    	System.out.println(str);
    }
    /**
     * 向指定URL发送GET方法的请求
     * 
     * @param url
     *            发送请求的URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }
}

Transfer-Encoding--->[chunked]
null--->[HTTP/1.1 200 OK]
Server--->[nginx]
Connection--->[close]
Vary--->[Accept-Encoding]
Date--->[Thu, 05 Sep 2019 12:25:58 GMT]
Content-Type--->[text/html; charset=utf-8]
{"code":0,"message":"","codeDesc":"Success","data":{"totalCount":1,"topicList":[{"topic":"topic_test1","partitions":[{"partition":0,"offset":349344,"meta":null,"errCode":0,"logEndOffset":349415,"lag":71}]}]}}