注:此文章只作为本人的学习笔记,原文章链接 http://blog.csdn.net/xinxiran/article/details/78893986
需要的jar包(可能有多余的):
commons-io-2.6-sources.jar
commons-io-2.6.jar
commons-lang3-3.3.2.jar
commons-logging-1.2.jar
fastjson-1.2.42.jar
httpasyncclient-4.1.3.jar
httpclient-4.5.3.jar
httpcore-4.4.6.jar
httpmime-4.3.1.jar
工具类HttpUtil:
package cn.hhm.http.utils;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
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.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustStrategy;
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.ssl.SSLContextBuilder;
import org.apache.http.util.EntityUtils;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
public class HttpUtil {
private static PoolingHttpClientConnectionManager connectionManager;
private static RequestConfig requestConfig;
private static final int MAX_TIMEOUT = 7000;
static {
// 创建连接池
connectionManager = new PoolingHttpClientConnectionManager();
// 设置连接池大小
connectionManager.setMaxTotal(50);
// 将每个路由基础的连接增加到getMaxTotal()
connectionManager.setDefaultMaxPerRoute(connectionManager.getMaxTotal());
// 可用空闲连接过期时间,重用空闲连接时会先检查是否空闲时间超过这个时间,如果超过,释放socket重新建立
connectionManager.setValidateAfterInactivity(10000);
RequestConfig.Builder configBuilder = RequestConfig.custom();
// 设置连接超时
configBuilder.setConnectTimeout(MAX_TIMEOUT);
// 设置读取超时
configBuilder.setSocketTimeout(MAX_TIMEOUT);
// 设置从连接池获取连接实例的超时
configBuilder.setConnectionRequestTimeout(MAX_TIMEOUT);
requestConfig = configBuilder.build();
}
/**
* 发送 GET 请求
*
* @param url
* @return
*/
public static String doGet(String url) {
return doGet(url, new HashMap<String, Object>());
}
/**
* 发送 GET 请求
*
* @param url
* @param params
* 请求参数
* @return
*/
public static String doGet(String url, Map<String, Object> params) {
StringBuilder sb = new StringBuilder();
for (String key : params.keySet()) {
if(sb.length() > 0)
sb.append("&");
else
sb.append("?");
sb.append(key).append("=").append(params.get(key));
}
url += sb.toString();
String result = null;// 返回的数据
HttpClient httpClient = null;
if (url.startsWith("https")) {// 创建https连接
httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory())
.setConnectionManager(connectionManager).setDefaultRequestConfig(requestConfig).build();
} else {// 创建http连接
httpClient = HttpClients.createDefault();
}
try {
HttpGet httpGet = new HttpGet(url);
HttpResponse response = httpClient.execute(httpGet);
// 获取返回的内容
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream inputStream = entity.getContent();
result = IOUtils.toString(inputStream, "UTF-8");
}
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
/**
* 发送 POST 请求
*
* @param url
* @return
*/
public static String doPOST(String url) {
return doPOST(url, new HashMap<String, Object>());
}
/**
* 发送 POST 请求,map
*
* @param url
* @param params
* 请求参数
* @return
*/
public static String doPOST(String url, Map<String, Object> params) {
CloseableHttpClient httpClient = null;
if (url.startsWith("https")) {// 创建https连接
httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory())
.setConnectionManager(connectionManager).setDefaultRequestConfig(requestConfig).build();
} else {// 创建http连接
httpClient = HttpClients.createDefault();
}
String httpStr = null;
HttpPost httpPost = new HttpPost(url);
CloseableHttpResponse response = null;
try {
httpPost.setConfig(requestConfig);
List<NameValuePair> pairList = new ArrayList<>(params.size());
for (Map.Entry<String, Object> entry : params.entrySet()) {
NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry.getValue().toString());
pairList.add(pair);
}
httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName("UTF-8")));
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
httpStr = EntityUtils.toString(entity, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
}finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 POST 请求,JSON形式
*
* @param apiUrl
* @param json
* json对象
* @return
*/
public static String doPost(String apiUrl, Object json) {
CloseableHttpClient httpClient = null;
if (apiUrl.startsWith("https")) {
httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory())
.setConnectionManager(connectionManager).setDefaultRequestConfig(requestConfig).build();
} else {
httpClient = HttpClients.createDefault();
}
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(json.toString(), "UTF-8");// 解决中文乱码问题
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
httpStr = EntityUtils.toString(entity, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 创建SSL安全连接
*
* @return
*/
private static SSLConnectionSocketFactory createSSLConnSocketFactory() {
SSLConnectionSocketFactory sslsf = null;
try {
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
return true;
}
}).build();
sslsf = new SSLConnectionSocketFactory(sslContext, new HostnameVerifier() {
@Override
public boolean verify(String arg0, SSLSession arg1) {
return true;
}
});
} catch (GeneralSecurityException e) {
e.printStackTrace();
}
return sslsf;
}
}