读取配置文件的URL，使用httpClient发送Post和Get请求，实现查询快递物流和智能机器人对话

1、主要jar包：

httpclient-4.3.5.jar   httpcore-4.3.2.jar

2、目录结构如图所示：

3、url.properties文件如下：

geturl=http://www.kuaidi100.com/query
posturl=http://www.tuling123.com/openapi/api

4、主要代码 GetAndPost.java：

 /**
  *
  */
 package getandpost;

 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Properties;

 import org.apache.commons.collections.map.LinkedMap;
 import org.apache.commons.httpclient.HttpClient;
 import org.apache.commons.httpclient.HttpMethod;
 import org.apache.commons.httpclient.HttpStatus;
 import org.apache.commons.httpclient.URIException;
 import org.apache.commons.httpclient.methods.GetMethod;
 import org.apache.commons.httpclient.params.HttpMethodParams;
 import org.apache.commons.httpclient.util.URIUtil;
 import org.apache.commons.lang.StringUtils;
 import org.apache.http.HttpEntity;
 import org.apache.http.HttpResponse;
 import org.apache.http.client.ClientProtocolException;
 import org.apache.http.client.methods.HttpPost;
 import org.apache.http.entity.StringEntity;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClients;
 import org.apache.http.util.EntityUtils;

 import com.google.gson.Gson;

 /**
  * @author hy
  * @date 2019-02-26 14:02:56
  *
  */
 public class GetAndPost {

     public static void main(String[] args) throws Exception {

         /**
          * 快递公司编码: 申通="shentong" EMS="ems" 顺丰="shunfeng" 圆通="yuantong"
          * 中通="zhongtong" 韵达="yunda" 天天="tiantian" 汇通="huitongkuaidi"
          * 全峰="quanfengkuaidi" 德邦="debangwuliu" 宅急送="zhaijisong"
          */
         doGet(paraUtil("yunda", "3101775486667"), "");
         doPost("2581f443bf364fd8a927fe87832e3d33", "晚上吃啥？", "hyblogs", "");
     }

     public static String paraUtil(String param1, String param2) {
         /*
          * 接收String ,转为url
          */
         HashMap<String, String> Map = new HashMap<>();
         String para = null;
         Map.put("type", param1);
         Map.put("postid", param2);
         StringBuffer parameters = new StringBuffer();
         for (Entry<String, String> mp : Map.entrySet()) {
             parameters.append(mp.getKey() + "=" + mp.getValue() + "&");
         }
         para = "&"
                 + parameters.toString().substring(0,
                         parameters.toString().length() - 1);
         return para;

     }

     /* 发送GET的工具方法 */
     public static String doGet(String content, String encode) throws Exception {
         if (encode == null || "".equals(encode)) {
             encode = "utf-8";
         }
         String geturl = getConfig().get("geturl");
         String response = null;
         HttpClient client = new HttpClient();
         HttpMethod method = new GetMethod(geturl);
         client.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,encode);
         System.out.println(method.getName());
         try {
             if (StringUtils.isNotBlank(content))
                 method.setQueryString(URIUtil.encodeQuery(content));
                 client.executeMethod(method);
             if (method.getStatusCode() == HttpStatus.SC_OK) // 等于200表示请求成功
             {
                 response = method.getResponseBodyAsString();
             }
         } catch (URIException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         } finally {
             method.releaseConnection();
         }
         System.out.println(response);
         return response;
     }

     /* 发送Post请求的工具方法 */
     public static String doPost(String key, String info, String userid,
             String encode) throws Exception {
         if (encode == null || "".equals(encode)) {
             encode = "utf-8";
         }
         String posturl = getConfig().get("posturl");
         String response = null;
         try {
             // 第一步：创建HttpClient对象
             CloseableHttpClient client = HttpClients.createDefault();
             // 第二步：创建httpPost对象
             HttpPost httpPost = new HttpPost(posturl);
             System.out.println(HttpPost.METHOD_NAME);
             LinkedMap map = new LinkedMap();
             map.put("key", key);
             map.put("info", info);
             map.put("userid", userid);
             Gson gson = new Gson();
             String json = gson.toJson(map);
             StringEntity entity = new StringEntity(json, encode);// 解决中文乱码问题
             entity.setContentEncoding(encode);
             entity.setContentType("application/json");
             httpPost.setEntity(entity);
             HttpResponse resp = client.execute(httpPost);
             System.out.println(resp);
             if (resp.getStatusLine().getStatusCode() == HttpStatus.SC_OK) // 等于200表示请求成功
             {
                 HttpEntity he = resp.getEntity();
                 response = EntityUtils.toString(he, "UTF-8");
             }
         } catch (ClientProtocolException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
         System.out.println(response);
         return response;
     }

     public static Map<String, String> getConfig() throws Exception {
         HashMap<String, String> map = new HashMap<String, String>();
         Properties property = new Properties();
         try {
             property = PropertiesUtil.loadProperties("config/url.properties");
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
         map.put("geturl", property.getProperty("geturl"));
         map.put("posturl", property.getProperty("posturl"));
         return map;
     }
 }

5、读取配置文件中的url，PropertiesUtil.java：

 package getandpost;

 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.Properties;

 public class PropertiesUtil {
     public static Properties loadProperties(String... profilepath) throws IOException {
         Properties prop = new Properties();
         //传入的多个配置文件中，如有相同的属性名，以最后的配置文件属性值为准（会覆盖掉前面的属性值）
         for (String path : profilepath) {
             try {
                 prop.load(PropertiesUtil.class.getClassLoader().getResourceAsStream(path));
             } catch (FileNotFoundException e) {
                 e.printStackTrace();
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
         return prop;
     }
 }

运行结果：