import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.*;
import java.nio.charset.StandardCharsets;
import java.util.Map;
/**
* 快递查询DEMO
* @author micro.cloud.fly
* @date 2022/6/30 2:19 下午
* @desc
*/
public class Demo {
public static void main(String[] args) {
String url="http://v.juhe.cn/exp/index";
String query="com=jd&no=您要查询的快递单号&senderPhone=&receiverPhone=&dtype=&key=您的请求凭证APPKEY";
String response = Demo.doGet(url,query);
System.out.println(response);
}
/**
* get方式的http请求
*
* @param httpUrl 请求地址
* @return 返回结果
*/
public static String doGet(String httpUrl, String queryParams) {
HttpURLConnection connection = null;
InputStream inputStream = null;
BufferedReader bufferedReader = null;
String result = null;// 返回结果字符串
try {
// 创建远程url连接对象
URL url = new URL(new StringBuffer(httpUrl).append("?").append(queryParams).toString());
// 通过远程url连接对象打开一个连接,强转成httpURLConnection类
connection = (HttpURLConnection) url.openConnection();
// 设置连接方式:get
connection.setRequestMethod("GET");
// 设置连接主机服务器的超时时间:15000毫秒
connection.setConnectTimeout(5000);
// 设置读取远程返回的数据时间:60000毫秒
connection.setReadTimeout(6000);
// 发送请求
connection.connect();
// 通过connection连接,获取输入流
if (connection.getResponseCode() == 200) {
inputStream = connection.getInputStream();
// 封装输入流,并指定字符集
bufferedReader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
// 存放数据
StringBuilder sbf = new StringBuilder();
String temp;
while ((temp = bufferedReader.readLine()) != null) {
sbf.append(temp);
sbf.append(System.getProperty("line.separator"));
}
result = sbf.toString();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
// 关闭资源
if (null != bufferedReader) {
try {
bufferedReader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (null != inputStream) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (connection != null) {
connection.disconnect();// 关闭远程连接
}
}
return result;
}
/**
* 将map型转为请求参数型
*
* @param data
* @return
*/
public static String urlencode(Map<String, Object> data) {
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, ?> i : data.entrySet()) {
try {
sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue() + "", "UTF-8")).append("&");
} catch (Exception e) {
e.printStackTrace();
}
}
String result = sb.toString();
result = result.substring(0, result.lastIndexOf("&"));
return result;
}
}
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