HTTPClient请求Http接口

package awb.aweb_soa.global.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.stream.Collectors;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.HeaderElement;
import org.apache.http.HeaderElementIterator;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.ConnectionKeepAliveStrategy;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicHeaderElementIterator;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.protocol.HttpContext;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.Assert;

import awb.aweb_soa.global.exception.SOAException;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

/**
 * @author 马弦
 * @date 2017年10月23日 下午2:49 HttpClient工具类
 * 
 * 2018年7月25日14:20:27
 * 重构  加强 
 * 
 */
public class HttpUtil {
	private static final Logger LOGGER = LoggerFactory
			.getLogger(HttpUtil.class);
	private static HttpClient httpClient;
	private static final String CONFIG_FILE_PATH="/httpclient.properties";
	private static final String SSL_VERSION_KEY="https.ssl.version";//
	private static final String TLS_VERSION_KEY="https.tls.version";//TLSv1,TLSv1.1,TLSv1.2
	private static final String CIPHER_SUITES_KEY="https.ciphersuites";//null
	private static final String KEEP_ALIVE_TIME_KEY="http.defaultkeepalivetime";//20000
	
	static {
		try {
			Map<String,String> config=MapBuilder.<String,String>hashMap()
					.map(SSL_VERSION_KEY, "SSLv3")
					.map(TLS_VERSION_KEY, "TLSv1,TLSv1.1,TLSv1.2")
					.map(CIPHER_SUITES_KEY, null)
					.map(KEEP_ALIVE_TIME_KEY, "20000")
					.build();
			try(InputStream in=HttpUtil.class.getResourceAsStream(CONFIG_FILE_PATH)){
				Properties properties=new Properties();
				properties.load(in);
				properties.forEach((key,value)->config.put((String)key, (String)value));
			}catch(Exception e){
				LOGGER.warn("加载HttpClient配置失败",e);
			}
			ConnectionKeepAliveStrategy myStrategy = new ConnectionKeepAliveStrategy() {
			    @Override
			    public long getKeepAliveDuration(HttpResponse response, HttpContext context) {
			        HeaderElementIterator it = new BasicHeaderElementIterator
			            (response.headerIterator(HTTP.CONN_KEEP_ALIVE));
			        while (it.hasNext()) {
			            HeaderElement he = it.nextElement();
			            String param = he.getName();
			            String value = he.getValue();
			            if (value != null && param.equalsIgnoreCase
			               ("timeout")) {
			                return Long.parseLong(value) * 1000;
			            }
			        }
			        return Integer.parseInt(config.get(KEEP_ALIVE_TIME_KEY));//如果没有约定，则默认定义时长为20s
			    }

			};
			SSLContext sslContext = SSLContext.getInstance(config.get(SSL_VERSION_KEY));
			sslContext.init(null, new TrustManager[]{
					new X509TrustManager(){
					@Override
					public void checkClientTrusted(
							X509Certificate[] paramArrayOfX509Certificate,
							String paramString) throws CertificateException {}
	
					@Override
					public void checkServerTrusted(
							X509Certificate[] paramArrayOfX509Certificate,
							String paramString) throws CertificateException {}
	
					@Override
					public X509Certificate[] getAcceptedIssuers() {return null;}
				}
			}, null);
			 // Allow TLSv1 protocol only
	        SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(
	        		sslContext, 
	        		config.get(TLS_VERSION_KEY).trim().split("[\\ \\r\\n]*,[\\ \\r\\n]*"),
	        		config.get(CIPHER_SUITES_KEY)==null?null:config.get(CIPHER_SUITES_KEY).trim().split("[\\ \\r\\n]*,[\\ \\r\\n]*"), //
	        		(paramString,paramSSLSession)->true
	        	);
			
	        PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(
	        		RegistryBuilder.<ConnectionSocketFactory>create()  
		                .register("http", PlainConnectionSocketFactory.INSTANCE)  
		                .register("https",sslSocketFactory)  
		                .build());
			connectionManager.setMaxTotal(500);
			connectionManager.setDefaultMaxPerRoute(50);//例如默认每路由最高50并发，具体依据业务来定
			connectionManager.setValidateAfterInactivity(60000);
			httpClient = HttpClients.custom()
	                .setConnectionManager(connectionManager)
	                .setKeepAliveStrategy(myStrategy)
	                .build();
		} catch (Exception e) {
			throw new IllegalStateException(e.getMessage(),e);
		}
       
	}
	/**
	 * get请求
	 * 
	 * @return
	 */
	public static String doGet(String url) {
		try {
			HttpClient client = httpClient;
			// 发送get请求
			HttpGet request = new HttpGet(url);
			HttpResponse response = client.execute(request);

			/** 请求发送成功，并得到响应 **/
			if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
				/** 读取服务器返回过来的json字符串数据 **/
				String strResult = EntityUtils.toString(response.getEntity());
				return strResult;
			}
		} catch (IOException e) {
			throw new IllegalStateException("GET 接口调用失败 URL:"+url+" "+e.getMessage(),e);
		}

		return null;
	}

	/**
	 * post请求(用于key-value格式的参数)
	 * 
	 * @param url
	 * @param params
	 * @return
	 * @throws IOException
	 * @throws URISyntaxException
	 */
	public static String doPost(String url, Map params) throws IOException,
			URISyntaxException {
		String errorMsg;
		BufferedReader in = null;
		// 定义HttpClient
		HttpClient client = httpClient;
		// 实例化HTTP方法
		HttpPost request = new HttpPost();
		request.setURI(new URI(url));

		// 设置参数
		List<NameValuePair> nvps = new ArrayList<NameValuePair>();
		for (Iterator iter = params.keySet().iterator(); iter.hasNext();) {
			String name = (String) iter.next();
			String value = String.valueOf(params.get(name));
			nvps.add(new BasicNameValuePair(name, value));
		}
		request.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

		HttpResponse response = client.execute(request);
		int code = response.getStatusLine().getStatusCode();
		if (code == 200) { // 请求成功
			in = new BufferedReader(new InputStreamReader(response.getEntity()
					.getContent(), "utf-8"));
			StringBuffer sb = new StringBuffer("");
			String line = "";
			String NL = System.getProperty("line.separator");
			while ((line = in.readLine()) != null) {
				sb.append(line + NL);
			}

			in.close();
			JSONObject resMap = JSON.parseObject(sb.toString());
			if (resMap == null) {
				return "";
			}
			if (resMap.get("errorMsg") == null) {

				return sb.toString();
			} else {
				errorMsg = JSON.parseObject(sb.toString()).get("errorMsg")
						.toString();
				if (errorMsg != null && !errorMsg.equals(""))
					throw SOAException.error("SA6102", errorMsg);
				return sb.toString();
			}
		} else { //
			throw SOAException.error("SA6102", "状态码：" + code);
		}
	}

	/**
	 * post请求(用于key-value格式的参数)
	 * 
	 * @param url
	 * @param params
	 * @return
	 * @throws IOException
	 * @throws URISyntaxException
	 */
	public static String doPost2(String url, Map<String, String> params) {
		List<NameValuePair> nvps = params
				.entrySet()
				.stream()
				.map(entry -> new BasicNameValuePair(entry.getKey(), entry
						.getValue())).collect(Collectors.toList());
		// 实例化HTTP方法
		HttpPost request;
		try {
			request = new HttpPost(new URI(url));
		} catch (URISyntaxException e1) {
			throw new RuntimeException("http配置错误", e1);
		}
		// 设置参数
		request.setEntity(new UrlEncodedFormEntity(nvps, Charset
				.forName("UTF-8")));
		// 定义HttpClient
		try  {
			HttpResponse response = httpClient.execute(request);
			int code = response.getStatusLine().getStatusCode();
			String responseString = EntityUtils.toString(response.getEntity(),
					Charset.forName("UTF-8"));
			if (HttpStatus.SC_OK == code) { // 请求成功
				return responseString;
			} else { //
				LOGGER.error("HTTP:" + code);
				LOGGER.error(responseString);
				throw new IllegalStateException("Http接口调用失败，URL：" + url
						+ ", 状态码：" + code);
			}
		} catch (Exception e) {
			throw new IllegalStateException("Http接口调用失败," + e.getMessage(), e);
		}
	}

	/**
	 * post请求（用于请求json格式的参数）
	 * 
	 * @param url
	 * @param params
	 * @return
	 */
	public static String doPost(String url, String params) throws Exception {

		HttpPost httpPost = new HttpPost(url);// 创建httpPost
		httpPost.setHeader("Accept", "application/json");
		httpPost.setHeader("Content-Type", "application/json");
		String charSet = "UTF-8";
		StringEntity entity = new StringEntity(params, charSet);
		httpPost.setEntity(entity);
		HttpResponse response = null;

		try {
			response = httpClient.execute(httpPost);
			StatusLine status = response.getStatusLine();
			int state = status.getStatusCode();
			if (state == HttpStatus.SC_OK) {
				HttpEntity responseEntity = response.getEntity();
				String jsonString = EntityUtils.toString(responseEntity);
				return jsonString;
			}
		} catch(Exception e){
			throw new IllegalStateException("接口调用失败，URL："+url+" " +e.getMessage(),e);
		}
		return null;
	}
	/**
	 * post请求文件(用于key-value格式的参数)
	 * 
	 * @param url
	 * @param params
	 * @param name 文件参数名称
	 * @param file 文件路径
	 * 
	 * @return
	 * @throws IOException
	 * @throws URISyntaxException
	 */
	public static String doPostFile(String url, Map<String, String> params,String name,Path file) {
		
		Assert.isTrue(Files.exists(file)&&Files.isRegularFile(file), "file 参数不正确 "+file);
		
		// 实例化HTTP方法
		HttpPost request;
		try {
			request = new HttpPost(new URI(url));
		} catch (URISyntaxException e1) {
			throw new RuntimeException("http配置错误", e1);
		}
		try(InputStream stream=Files.newInputStream(file)){
			MultipartEntityBuilder entityBuilder=MultipartEntityBuilder.create()
					.addBinaryBody(name, stream,ContentType.DEFAULT_BINARY,file.getFileName().toString());
			entityBuilder.setCharset(Charset.forName("UTF-8"));
			ContentType contentType=ContentType.create("text/plain",  Charset
					.forName("UTF-8"));
			params.forEach((key,value)->{
				entityBuilder.addTextBody(key, value, contentType);
			});
			// 设置参数
			request.setEntity(entityBuilder.build());
			// 定义HttpClient
			HttpResponse response = httpClient.execute(request);
			int code = response.getStatusLine().getStatusCode();
			String responseString = EntityUtils.toString(response.getEntity(),
					Charset.forName("UTF-8"));
			if (HttpStatus.SC_OK == code) { // 请求成功
				return responseString;
			} else { //
				LOGGER.error("HTTP:" + code);
				LOGGER.error(responseString);
				throw new IllegalStateException("Http接口调用失败，URL：" + url
						+ ", 状态码：" + code);
			}
		} catch (Exception e) {
			throw new IllegalStateException("Http接口调用失败," + e.getMessage(), e);
		}
	}
	public static void doDownloadFile(String url, Map<String, String> params,OutputStream out){
		List<NameValuePair> nvps = params
				.entrySet()
				.stream()
				.map(entry -> new BasicNameValuePair(entry.getKey(), entry
						.getValue())).collect(Collectors.toList());
		// 实例化HTTP方法
		HttpPost request;
		try {
			request = new HttpPost(new URI(url));
		} catch (URISyntaxException e1) {
			throw new RuntimeException("http配置错误", e1);
		}
		// 设置参数
		request.setEntity(new UrlEncodedFormEntity(nvps, Charset
				.forName("UTF-8")));
		// 定义HttpClient
		try {
			HttpResponse response = httpClient.execute(request);
			int code = response.getStatusLine().getStatusCode();
			if (HttpStatus.SC_OK == code) { // 请求成功
				response.getEntity().writeTo(out);
			} else { //
				LOGGER.error("HTTP:" + code);
				String responseString = EntityUtils.toString(response.getEntity(),
						Charset.forName("UTF-8"));
				LOGGER.error(responseString);
				throw new IllegalStateException("Http接口调用失败，URL：" + url
						+ ", 状态码：" + code);
			}
		} catch (Exception e) {
			throw new IllegalStateException("Http接口调用失败," + e.getMessage(), e);
		}
	}
	
	public static void main(String[] args) {
		System.out.println(doPost2("https://localhost:8443/",Collections.emptyMap()));
//		System.out.println(Arrays.asList("  123   ,   2333, \n 333\n, 444 ".trim().split("[\\ \\r\\n]*,[\\ \\r\\n]*")));
	}
}