Java教程
HttpClientUtils.java http请求工具类
本文主要是介绍HttpClientUtils.java http请求工具类，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
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.client.methods.HttpUriRequest;
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.message.BasicNameValuePair;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
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;
/**
* @author code4crafter@gmail.com
* Date: 17/3/27
*/
public abstract class HttpClientUtils {
public static Map<String, List<String>> convertHeaders(Header[] headers) {
Map<String, List<String>> results = new HashMap<String, List<String>>();
for (Header header : headers) {
List<String> list = results.get(header.getName());
if (list == null) {
list = new ArrayList<String>();
results.put(header.getName(), list);
}
list.add(header.getValue());
}
return results;
}
/**
* http的get请求
*
* @param url
*/
public static String get(String url) {
return get(url, "UTF-8");
}
public static Logger logger = LoggerFactory.getLogger(HttpClientUtils.class);
/**
* http的get请求
*
* @param url
*/
public static String get(String url, String charset) {
HttpGet httpGet = new HttpGet(url);
return executeRequest(httpGet, charset);
}
/**
* http的get请求，增加异步请求头参数
*
* @param url
*/
public static String ajaxGet(String url) {
return ajaxGet(url, "UTF-8");
}
/**
* http的get请求，增加异步请求头参数
*
* @param url
*/
public static String ajaxGet(String url, String charset) {
HttpGet httpGet = new HttpGet(url);
httpGet.setHeader("X-Requested-With", "XMLHttpRequest");
return executeRequest(httpGet, charset);
}
/**
* @param url
* @return
*/
public static String ajaxGet(CloseableHttpClient httpclient, String url) {
HttpGet httpGet = new HttpGet(url);
httpGet.setHeader("X-Requested-With", "XMLHttpRequest");
return executeRequest(httpclient, httpGet, "UTF-8");
}
/**
* http的post请求，传递map格式参数
*/
public static String post(String url, Map<String, String> dataMap) {
return post(url, dataMap, "UTF-8");
}
/**
* http的post请求，传递map格式参数
*/
public static String post(String url, Map<String, String> dataMap, String charset) {
HttpPost httpPost = new HttpPost(url);
try {
if (dataMap != null) {
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
for (Map.Entry<String, String> entry : dataMap.entrySet()) {
nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nvps, charset);
formEntity.setContentEncoding(charset);
httpPost.setEntity(formEntity);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return executeRequest(httpPost, charset);
}
/**
* http的post请求，增加异步请求头参数，传递map格式参数
*/
public static String ajaxPost(String url, Map<String, String> dataMap) {
return ajaxPost(url, dataMap, "UTF-8");
}
/**
* http的post请求，增加异步请求头参数，传递map格式参数
*/
public static String ajaxPost(String url, Map<String, String> dataMap, String charset) {
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("X-Requested-With", "XMLHttpRequest");
try {
if (dataMap != null) {
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
for (Map.Entry<String, String> entry : dataMap.entrySet()) {
nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nvps, charset);
formEntity.setContentEncoding(charset);
httpPost.setEntity(formEntity);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return executeRequest(httpPost, charset);
}
/**
* http的post请求，增加异步请求头参数，传递json格式参数
*/
public static String ajaxPostJson(String url, String jsonString) {
return ajaxPostJson(url, jsonString, "UTF-8");
}
/**
* http的post请求，增加异步请求头参数，传递json格式参数
*/
public static String ajaxPostJson(String url, String jsonString, String charset) {
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("X-Requested-With", "XMLHttpRequest");
// try {
StringEntity stringEntity = new StringEntity(jsonString, charset);// 解决中文乱码问题
stringEntity.setContentEncoding(charset);
stringEntity.setContentType("application/json");
httpPost.setEntity(stringEntity);
// } catch (UnsupportedEncodingException e) {
// e.printStackTrace();
// }
return executeRequest(httpPost, charset);
}
/**
* 执行一个http请求，传递HttpGet或HttpPost参数
*/
public static String executeRequest(HttpUriRequest httpRequest) {
return executeRequest(httpRequest, "UTF-8");
}
/**
* 执行一个http请求，传递HttpGet或HttpPost参数
*/
public static String executeRequest(HttpUriRequest httpRequest, String charset) {
CloseableHttpClient httpclient;
if ("https".equals(httpRequest.getURI().getScheme())) {
httpclient = createSSLInsecureClient();
} else {
httpclient = HttpClients.createDefault();
}
String result = "";
try {
try {
CloseableHttpResponse response = httpclient.execute(httpRequest);
HttpEntity entity = null;
try {
entity = response.getEntity();
result = EntityUtils.toString(entity, charset);
} finally {
EntityUtils.consume(entity);
response.close();
}
} finally {
httpclient.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
return result;
}
public static String executeRequest(CloseableHttpClient httpclient, HttpUriRequest httpRequest, String charset) {
String result = "";
try {
try {
CloseableHttpResponse response = httpclient.execute(httpRequest);
HttpEntity entity = null;
try {
entity = response.getEntity();
result = EntityUtils.toString(entity, charset);
} finally {
EntityUtils.consume(entity);
response.close();
}
} finally {
httpclient.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
return result;
}
/**
* 创建 SSL连接
*/
public static CloseableHttpClient createSSLInsecureClient() {
try {
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(new TrustStrategy() {
@Override
public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
return true;
}
}).build();
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
return HttpClients.custom().setSSLSocketFactory(sslsf).build();
} catch (GeneralSecurityException ex) {
throw new RuntimeException(ex);
}
}
}
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https://mp.weixin.qq.com/s/dyelKjD5RpHt7DTfst1Qdg
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