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：