com.github.javaclub.configcenter.client.util.HttpHelper Maven / Gradle / Ivy

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package com.github.javaclub.configcenter.client.util;

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

import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.StatusLine;
import org.apache.http.client.config.RequestConfig;
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.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HttpHelper {
	private static final Logger logger = LoggerFactory.getLogger(HttpHelper.class);

	private static CloseableHttpClient getHttpClient() {
		HttpClientBuilder httpClientBuilder = HttpClients.custom();

		String name = "Apache-HttpClient";
		String release = "4.5";
		String javaVersion = System.getProperty("java.version");
		String userAgent = String.format("%s/%s (Java/%s)", name, release, javaVersion);
		httpClientBuilder.setUserAgent(userAgent);
		httpClientBuilder.setDefaultRequestConfig(RequestConfig.custom().setConnectTimeout(3000).build());
		return httpClientBuilder.build();
	}

	public static String post(String uri, Map params) throws Exception {
		CloseableHttpClient httpclient = getHttpClient();
		// 创建httppost
		HttpPost httppost = new HttpPost(uri);
		// 创建参数队列
		List formparams = new ArrayList();
		if (params != null && !params.isEmpty()) {
			for (String key : params.keySet()) {
				formparams.add(new BasicNameValuePair(key, params.get(key)));
			}
		}

		UrlEncodedFormEntity uefEntity;
		try {
			uefEntity = new UrlEncodedFormEntity(formparams, "UTF-8");
			httppost.setEntity(uefEntity);

			CloseableHttpResponse response = httpclient.execute(httppost);
			try {
				HttpEntity entity = response.getEntity();
				if (entity != null) {
					return EntityUtils.toString(entity, "UTF-8");
				}
			} finally {
				response.close();
			}
		} catch (Exception e) {
			throw e;
		} finally {
			// 关闭连接,释放资源
			try {
				httpclient.close();
			} catch (Exception e) {
				throw e;
			}
		}
		return null;
	}

	public static String post(String uri, String text) throws Exception {
		CloseableHttpClient httpclient = getHttpClient();
		// 创建httppost
		HttpPost httppost = new HttpPost(uri);

		try {

			StringEntity se = new StringEntity(text, "UTF-8");
			httppost.setEntity(se);

			CloseableHttpResponse response = httpclient.execute(httppost);
			try {
				StatusLine statusLine = response.getStatusLine();
				int code = 200;
				if (statusLine != null) {
					code = response.getStatusLine().getStatusCode();
				}

				if (200 != code) {
					logger.warn("post uri:{},code:{}", uri, code);
				}
				HttpEntity entity = response.getEntity();
				if (entity != null) {
					String r = EntityUtils.toString(entity, "UTF-8");
					if (200 != code) {
						logger.warn("resp:{}", r);
					}
					return r;
				}
			} finally {
				response.close();
			}
		} catch (Exception e) {
			throw e;
		} finally {
			// 关闭连接,释放资源
			try {
				httpclient.close();
			} catch (Exception e) {
				throw e;
			}
		}
		return null;
	}

	/**
	 * 发送 get请求
	 * 
	 * @throws Exception
	 */
	public static String get(String url) throws Exception {
		CloseableHttpClient httpclient = getHttpClient();
		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();

				StatusLine statusLine = response.getStatusLine();
				int code = 200;
				if (statusLine != null) {
					code = response.getStatusLine().getStatusCode();
				}

				if (200 != code) {
					logger.warn("get uri:{},code:{}", url, code);
				}

				// 打印响应状态
				// System.out.println(response.getStatusLine());
				if (entity != null) {
					String r = EntityUtils.toString(entity, "UTF-8");
					if (200 != code) {
						logger.warn("resp:{}", r);
					}
					return r;
				}

			} finally {
				response.close();
			}
		} catch (Exception e) {
			throw e;
		} finally {
			// 关闭连接,释放资源
			try {
				httpclient.close();
			} catch (IOException e) {
				throw e;
			}
		}
		return null;
	}
}