wlyy2.0/patient-co-wlyy/src/main/java/com/yihu/wlyy/util/HttpClientUtil.java

package com.yihu.wlyy.util;

import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.web.client.RestTemplate;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

public class HttpClientUtil {

	/**
	 * 发送post请求
	 * @param url 请求地址
	 * @param params 请求参数
	 * @param chatSet 编码格式
	 * @return
	 */
	public static String post(String url, List<NameValuePair> params, String chatSet) {
		// 创建默认的httpClient实例.
		CloseableHttpClient httpclient = HttpClients.createDefault();
		// 创建httppost
		HttpPost httppost = new HttpPost(url);
		UrlEncodedFormEntity uefEntity;
		try {
			uefEntity = new UrlEncodedFormEntity(params, chatSet);
			httppost.setEntity(uefEntity);
			CloseableHttpResponse response = httpclient.execute(httppost);
			try {
				HttpEntity entity = response.getEntity();
				if (entity != null) {
					return EntityUtils.toString(entity, chatSet);
				}
			} finally {
				response.close();
			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (UnsupportedEncodingException e1) {
			e1.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			// 关闭连接,释放资源
			try {
				httpclient.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return null;
	}

	/**
	 * 发送get请求
	 * @param url 请求地址
	 * @param chatSet 编码格式
	 * @return
	 */
	public static String get(String url, String chatSet) {
		CloseableHttpClient httpclient = HttpClients.createDefault();
		try {
			// 创建httpget.
			HttpGet httpget = new HttpGet(url);
			// 执行get请求.
			CloseableHttpResponse response = httpclient.execute(httpget);
			try {
				// 获取响应实体
				HttpEntity entity = response.getEntity();
				if (entity != null) {
					return EntityUtils.toString(entity, chatSet);
				}
			} finally {
				response.close();
			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (ParseException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			// 关闭连接,释放资源
			try {
				httpclient.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return null;
	}

	/**
	 * http调用方法，(健康之路开放平台)
	 * @param url
	 * @param params
	 * @return
	 * @throws Exception
	 */
	public static String httpPost(String url, Map<String, String> params) throws Exception {
		CloseableHttpClient httpclient = HttpClients.createDefault();
		try {
			HttpPost httpPost = new HttpPost(url);
			if(params!=null&&params.size()>0){
				List<NameValuePair> valuePairs = new ArrayList<NameValuePair>(params.size());
				for (Map.Entry<String, String> entry : params.entrySet()) {
					NameValuePair nameValuePair = new BasicNameValuePair(entry.getKey(), String.valueOf(entry.getValue()));
					valuePairs.add(nameValuePair);
				}
				UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(	valuePairs, "UTF-8");
				httpPost.setEntity(formEntity);
			}
			CloseableHttpResponse resp = httpclient.execute(httpPost);
			try {
				HttpEntity entity = resp.getEntity();
				String respContent = EntityUtils.toString(entity, "UTF-8").trim();
				return respContent;
			} finally {
				resp.close();
			}
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}finally {
			httpclient.close();
		}
	}

	/**
	 * 获取加密后参数集合(健康之路开放平台)
	 * @param params
	 * @return
	 */
	public static Map<String,String> getSecretParams(Map<String, String> params,String appId,String secret)
	{
		String timestamp = Long.toString(System.currentTimeMillis());
		params.put("timestamp", timestamp);
		StringBuilder stringBuilder = new StringBuilder();

		// 对参数名进行字典排序  
		String[] keyArray = params.keySet().toArray(new String[0]);
		Arrays.sort(keyArray);
		// 拼接有序的参数名-值串  
		stringBuilder.append(appId);
		for(String key : keyArray)
		{
			stringBuilder.append(key).append(params.get(key));
		}
		String codes = stringBuilder.append(secret).toString();
		String sign = org.apache.commons.codec.digest.DigestUtils.shaHex(codes).toUpperCase();
		// 添加签名,并发送请求  
		params.put("appId", appId);
		params.put("sign", sign);

		return params;
	}


	public static String postBody(String url,JSONObject params){
		RestTemplate restTemplate = new RestTemplate();
		HttpHeaders headers = new HttpHeaders();
		MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
		headers.setContentType(type);
		headers.add("Accept", MediaType.APPLICATION_JSON.toString());
		org.springframework.http.HttpEntity<String> formEntity = new org.springframework.http.HttpEntity<String>(params.toString(), headers);
		String ret = restTemplate.postForObject(url, formEntity, String.class);
		return ret;
	}

	public static void putBody(String url,JSONObject params){
		RestTemplate restTemplate = new RestTemplate();
		HttpHeaders headers = new HttpHeaders();
		MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
		headers.setContentType(type);
		headers.add("Accept", MediaType.APPLICATION_JSON.toString());
		org.springframework.http.HttpEntity<String> formEntity = new org.springframework.http.HttpEntity<String>(params.toString(), headers);
		restTemplate.put(url, formEntity, String.class);
	}

}