1、首先加入依赖
<!-- http请求 -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
</dependency>
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
</dependency>
<!-- 日志 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>2、工具类HttpClientUtil
package com.dong.pay.util;
import java.net.URL;
import java.security.cert.CertificateException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
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.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.DefaultHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.util.PublicSuffixMatcher;
import org.apache.http.conn.util.PublicSuffixMatcherLoader;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger;
/**
* Http请求工具类
*
* @author caishaodong
*
*/
public class HttpClientUtil {
private static final Logger LOGGER = Logger.getLogger(HttpClientUtil.class);
private RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(15000).setConnectTimeout(15000)
.setConnectionRequestTimeout(15000).build();
private boolean checkTimeout = true;
public HttpClientUtil() {
}
/**
* 发送 get请求
*
* @param httpUrl
*/
public String sendHttpGet(String httpUrl) {
LOGGER.info("请求sendHttpGet方法，参数httpUrl=" + httpUrl);
HttpGet httpGet = new HttpGet(httpUrl);// 创建get请求
return httpGet(httpGet);
}
/**
* 发送 get请求Https
*
* @param httpUrl
*/
public String sendHttpsGet(String httpUrl) {
LOGGER.info("请求sendHttpsGet方法，参数httpUrl=" + httpUrl);
HttpGet httpGet = new HttpGet(httpUrl);// 创建get请求
return httpsGet(httpGet);
}
/**
* 发送Get请求
*
* @param httpPost
* @return
*/
private String httpGet(HttpGet httpGet) {
LOGGER.info("请求httpGet方法");
CloseableHttpClient httpClient = null;
CloseableHttpResponse response = null;
HttpEntity entity = null;
String responseContent = null;
try {
// 创建默认的httpClient实例.
httpClient = HttpClients.createDefault();
if (this.checkTimeout)
httpGet.setConfig(requestConfig);
// 执行请求
response = httpClient.execute(httpGet);
entity = response.getEntity();
responseContent = EntityUtils.toString(entity, "UTF-8");
LOGGER.info("请求httpGet方法响应信息：responseContent=" + responseContent);
} catch (Exception e) {
LOGGER.error("请求httpGet方法异常，异常信息：" + e.getMessage());
e.printStackTrace();
} finally {
try {
// 关闭连接,释放资源
if (response != null) {
response.close();
}
if (httpClient != null) {
httpClient.close();
}
} catch (Exception e) {
LOGGER.error("请求httpGet方法，关闭连接异常，异常信息：" + e.getMessage());
e.printStackTrace();
}
}
return responseContent;
}
/**
* 发送Get请求Https
*
* @param httpPost
* @return
*/
private String httpsGet(HttpGet httpGet) {
LOGGER.info("请求httpsGet方法");
CloseableHttpClient httpClient = null;
CloseableHttpResponse response = null;
HttpEntity entity = null;
String responseContent = null;
try {
// 创建默认的httpClient实例.
PublicSuffixMatcher publicSuffixMatcher = PublicSuffixMatcherLoader
.load(new URL(httpGet.getURI().toString()));
DefaultHostnameVerifier hostnameVerifier = new DefaultHostnameVerifier(publicSuffixMatcher);
httpClient = HttpClients.custom().setSSLHostnameVerifier(hostnameVerifier).build();
if (this.checkTimeout)
httpGet.setConfig(requestConfig);
// 执行请求
response = httpClient.execute(httpGet);
entity = response.getEntity();
responseContent = EntityUtils.toString(entity, "UTF-8");
LOGGER.info("请求httpsGet方法响应信息：responseContent=" + responseContent);
} catch (Exception e) {
LOGGER.error("请求httpsGet方法异常，异常信息：" + e.getMessage());
e.printStackTrace();
} finally {
try {
// 关闭连接,释放资源
if (response != null) {
response.close();
}
if (httpClient != null) {
httpClient.close();
}
} catch (Exception e) {
LOGGER.error("请求httpsGet方法，关闭连接异常，异常信息：" + e.getMessage());
e.printStackTrace();
}
}
return responseContent;
}
/**
* 发送 post请求
*
* @param httpUrl
* 地址
*/
public String sendHttpPost(String httpUrl) {
LOGGER.info("请求sendHttpPost方法，请求参数httpUrl=" + httpUrl);
HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
return httpPost(httpPost);
}
/**
* 发送 post请求
*
* @param httpUrl
* 地址
* @param params
* 参数(格式:key1=value1&key2=value2)
*/
public String sendHttpPost(String httpUrl, String params) {
LOGGER.info("请求sendHttpPost方法，请求参数httpUrl=" + httpUrl + "，params=" + params);
String responseContent = null;
HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
try {
// 设置参数
StringEntity stringEntity = new StringEntity(params, "UTF-8");
stringEntity.setContentType("application/x-www-form-urlencoded");
httpPost.setEntity(stringEntity);
responseContent = httpPost(httpPost);
} catch (Exception e) {
LOGGER.error("请求sendHttpPost方法异常，异常信息：" + e.getMessage());
e.printStackTrace();
}
return responseContent;
}
/**
* 发送 post请求
*
* @param httpUrl
* 地址
* @param maps
* 参数
*/
public String sendHttpPost(String httpUrl, Map<String, String> maps) {
LOGGER.info("请求sendHttpPost方法，请求参数httpUrl=" + httpUrl + "，maps=" + maps);
HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
// 创建参数队列
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
for (String key : maps.keySet()) {
nameValuePairs.add(new BasicNameValuePair(key, maps.get(key)));
}
try {
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs, "UTF-8"));
} catch (Exception e) {
LOGGER.error("请求sendHttpPost方法异常，异常信息：" + e.getMessage());
e.printStackTrace();
}
return httpPost(httpPost);
}
/**
* 发送Post请求
*
* @param httpPost
* @return
*/
private String httpPost(HttpPost httpPost) {
LOGGER.info("请求httpPost方法");
CloseableHttpClient httpClient = null;
CloseableHttpResponse response = null;
HttpEntity entity = null;
String responseContent = null;
try {
// 创建默认的httpClient实例.
httpClient = HttpClients.createDefault();
if (this.checkTimeout)
httpPost.setConfig(requestConfig);
// 执行请求
response = httpClient.execute(httpPost);
entity = response.getEntity();
responseContent = EntityUtils.toString(entity, "UTF-8");
LOGGER.info("请求httpPost方法响应信息：responseContent=" + responseContent);
} catch (Exception e) {
LOGGER.error("请求httpPost方法异常，异常信息：" + e.getMessage());
e.printStackTrace();
} finally {
try {
// 关闭连接,释放资源
if (response != null) {
response.close();
}
if (httpClient != null) {
httpClient.close();
}
} catch (Exception e) {
LOGGER.error("请求httpPost方法，关闭连接异常，异常信息：" + e.getMessage());
e.printStackTrace();
}
}
return responseContent;
}
public String sendHttpsPost(String httpUrl, Map<String, String> maps) {
LOGGER.info("请求sendHttpsPost方法，参数httpUrl=" + httpUrl + ",maps=" + maps);
String responseContent = null;
HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
// 创建参数队列
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
if (null != maps) {
for (String key : maps.keySet()) {
nameValuePairs.add(new BasicNameValuePair(key, maps.get(key)));
}
}
try {
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs, "UTF-8"));
responseContent = httpsPost(httpPost);
} catch (Exception e) {
LOGGER.error("请求sendHttpPost方法异常，异常信息：" + e.getMessage());
e.printStackTrace();
}
return responseContent;
}
private String httpsPost(HttpPost httpPost) throws Exception {
LOGGER.info("请求httpsPost方法");
// 采用绕过验证的方式处理https请求
SSLContext sslcontext = createIgnoreVerifySSL();
// 设置协议http和https对应的处理socket链接工厂的对象
Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
.register("http", PlainConnectionSocketFactory.INSTANCE)
.register("https", new SSLConnectionSocketFactory(sslcontext)).build();
PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
HttpClients.custom().setConnectionManager(connManager);
// 创建自定义的httpclient对象
CloseableHttpClient client = HttpClients.custom().setConnectionManager(connManager).build();
// 执行请求操作，并拿到结果（同步阻塞）
CloseableHttpResponse response = client.execute(httpPost);
// 获取结果实体
HttpEntity entity = response.getEntity();
String body = "";
if (entity != null) {
// 按指定编码转换结果实体为String类型
body = EntityUtils.toString(entity, "UTF-8");
}
LOGGER.info("请求httpsPost方法响应信息：body=" + body);
EntityUtils.consume(entity);
// 释放链接
response.close();
return body;
}
/**
* 绕过验证
*
* @return
* @throws Exception
*/
private SSLContext createIgnoreVerifySSL() throws Exception {
SSLContext sc = SSLContext.getInstance("SSL");
// 实现一个X509TrustManager接口，用于绕过验证，不用修改里面的方法
X509TrustManager trustManager = new X509TrustManager() {
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
String paramString) throws CertificateException {
}
@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
String paramString) throws CertificateException {
}
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
};
sc.init(null, new TrustManager[] { trustManager }, null);
return sc;
}
/**
* 是否校验超时时间
*
* @return true：校验<br>
* false：不校验(默认)
*/
public boolean isCheckTimeout() {
return checkTimeout;
}
/**
* 设置是否校验超时时间
*
* @param checkTimeout
* true：校验<br>
* false：不校验(默认)
*/
public void setCheckTimeout(boolean checkTimeout) {
this.checkTimeout = checkTimeout;
}
}