![[工具类-HttpClientUtils]HttpClient之GET PUT DELETE POST_第1张图片](http://img.e-com-net.com/image/info10/dcb29e5971734adcad6e9878c4ade2a8.jpg)
图片来自网络
发送http请求： get put delete post
package com.zefun.common.utils;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
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.commons.httpclient.HttpStatus;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
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.impl.conn.BasicHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger;
/**
* @Description
* @author liwang
* @date 2017年11月14日
* @version
*/
public class HttpClientUtil {
/**
* HTTP协议
*/
private static final String HTTPS_PROTOCOL = "https://";
/**
* 协议默认端口
*/
private static final int HTTPS_PROTOCOL_DEFAULT_PORT = 443;
/**
* 默认编码格式
*/
private static final String DEFAULT_CHARSET = "UTF-8";
/**
* 日志
*/
private static Logger logger = Logger.getLogger(HttpClientUtil.class);
/**
*
* @author
* @date
* @param url 路径
* @return int
*/
private static int getPort(String url) {
int startIndex = url.indexOf("://") + "://".length();
String host = url.substring(startIndex);
if (host.indexOf("/") != -1) {
host = host.substring(0, host.indexOf("/"));
}
int port = HTTPS_PROTOCOL_DEFAULT_PORT;
if (host.contains(":")) {
int i = host.indexOf(":");
port = new Integer(host.substring(i + 1));
}
return port;
}
/**
*
* @author
* @date
* @param params 参数
* @return List
*/
private static List geneNameValPairs(Map params) {
List pairs = new ArrayList();
if (params == null) {
return pairs;
}
for (String name : params.keySet()) {
if (params.get(name) == null) {
continue;
}
pairs.add(new BasicNameValuePair(name, params.get(name).toString()));
}
return pairs;
}
/**
* 发送GET请求
* @param url 请求地址
* @param charset 返回数据编码
* @return 返回数据
*/
public static String sendGetReq(final String url, String charset) {
if (null == charset){
charset = DEFAULT_CHARSET;
}
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
HttpGet get = new HttpGet(url);
if (url.toLowerCase().startsWith(HTTPS_PROTOCOL)) {
initSSL(httpClient, getPort(url));
}
try {
// 提交请求并以指定编码获取返回数据
HttpResponse httpResponse = httpClient.execute(get);
int statuscode = httpResponse.getStatusLine().getStatusCode();
if ((statuscode == HttpStatus.SC_MOVED_TEMPORARILY) || (statuscode == HttpStatus.SC_MOVED_PERMANENTLY)
|| (statuscode == HttpStatus.SC_SEE_OTHER) || (statuscode == HttpStatus.SC_TEMPORARY_REDIRECT)) {
Header header = httpResponse.getFirstHeader("location");
if (header != null) {
String newuri = header.getValue();
if ((newuri == null) || (newuri.equals(""))){
newuri = "/";
}
try {
httpClient.close();
}
catch (Exception e) {
e.printStackTrace();
httpClient = null;
}
logger.info("重定向地址：" + newuri);
return sendGetReq(newuri, null);
}
}
logger.info("请求地址：" + url + "；响应状态：" + httpResponse.getStatusLine());
HttpEntity entity = httpResponse.getEntity();
return EntityUtils.toString(entity, charset);
}
catch (ClientProtocolException e) {
logger.error("协议异常,堆栈信息如下", e);
}
catch (IOException e) {
logger.error("网络异常,堆栈信息如下", e);
}
finally {
// 关闭连接，释放资源
try {
httpClient.close();
}
catch (Exception e) {
e.printStackTrace();
httpClient = null;
}
}
return null;
}
/**
* 发送put请求
* @param url 请求地址
* @param params 请求参数
* @param charset 返回数据编码
* @return String
*/
public static String sendPutReq(String url, Map params, String charset) {
if (null == charset){
charset = DEFAULT_CHARSET;
}
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
HttpPut put = new HttpPut(url);
// 封装请求参数
List pairs = geneNameValPairs(params);
try {
put.setEntity(new UrlEncodedFormEntity(pairs, charset));
if (url.startsWith(HTTPS_PROTOCOL)) {
initSSL(httpClient, getPort(url));
}
// 提交请求并以指定编码获取返回数据
HttpResponse httpResponse = httpClient.execute(put);
logger.info("请求地址：" + url + "；响应状态：" + httpResponse.getStatusLine());
HttpEntity entity = httpResponse.getEntity();
return EntityUtils.toString(entity, charset);
}
catch (ClientProtocolException e) {
logger.error("协议异常,堆栈信息如下", e);
}
catch (IOException e) {
logger.error("网络异常,堆栈信息如下", e);
}
finally {
// 关闭连接，释放资源
try {
httpClient.close();
}
catch (Exception e) {
e.printStackTrace();
httpClient = null;
}
}
return null;
}
/**
* 发送delete请求
* @param url 请求地址
* @param charset 返回数据编码
* @return String
*/
public static String sendDelReq(String url, String charset) {
if (null == charset){
charset = DEFAULT_CHARSET;
}
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
HttpDelete del = new HttpDelete(url);
if (url.toLowerCase().startsWith(HTTPS_PROTOCOL)) {
initSSL(httpClient, getPort(url));
}
try {
// 提交请求并以指定编码获取返回数据
HttpResponse httpResponse = httpClient.execute(del);
logger.info("请求地址：" + url + "；响应状态：" + httpResponse.getStatusLine());
HttpEntity entity = httpResponse.getEntity();
return EntityUtils.toString(entity, charset);
}
catch (ClientProtocolException e) {
logger.error("协议异常,堆栈信息如下", e);
}
catch (IOException e) {
logger.error("网络异常,堆栈信息如下", e);
}
finally {
// 关闭连接，释放资源
try {
httpClient.close();
}
catch (Exception e) {
e.printStackTrace();
httpClient = null;
}
}
return null;
}
/**
* 发送POST请求，支持HTTP与HTTPS
* @param url 请求地址
* @param params 请求参数
* @param charset 返回数据编码
* @return 返回数据
*/
public static String sendPostReq(String url, Map params, String charset) {
if (null == charset){
charset = DEFAULT_CHARSET;
}
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
RequestConfig reqConf = RequestConfig.DEFAULT;
HttpPost httpPost = new HttpPost(url);
// 封装请求参数
List pairs = geneNameValPairs(params);
try {
httpPost.setEntity(new UrlEncodedFormEntity(pairs, charset));
// 对HTTPS请求进行处理
if (url.toLowerCase().startsWith(HTTPS_PROTOCOL)) {
initSSL(httpClient, getPort(url));
}
// 提交请求并以指定编码获取返回数据
httpPost.setConfig(reqConf);
HttpResponse httpResponse = httpClient.execute(httpPost);
int statuscode = httpResponse.getStatusLine().getStatusCode();
if ((statuscode == HttpStatus.SC_MOVED_TEMPORARILY) || (statuscode == HttpStatus.SC_MOVED_PERMANENTLY)
|| (statuscode == HttpStatus.SC_SEE_OTHER) || (statuscode == HttpStatus.SC_TEMPORARY_REDIRECT)) {
Header header = httpResponse.getFirstHeader("location");
if (header != null) {
String newuri = header.getValue();
if ((newuri == null) || (newuri.equals(""))){
newuri = "/";
}
try {
httpClient.close();
}
catch (Exception e) {
e.printStackTrace();
httpClient = null;
}
return sendGetReq(newuri, null);
}
}
logger.info("请求地址：" + url + "；响应状态：" + httpResponse.getStatusLine());
HttpEntity entity = httpResponse.getEntity();
return EntityUtils.toString(entity, charset);
}
catch (UnsupportedEncodingException e) {
logger.error("不支持当前参数编码格式[" + charset + "],堆栈信息如下", e);
}
catch (ClientProtocolException e) {
logger.error("协议异常,堆栈信息如下", e);
}
catch (IOException e) {
logger.error("网络异常,堆栈信息如下", e);
}
finally {
// 关闭连接，释放资源
try {
httpClient.close();
}
catch (Exception e) {
e.printStackTrace();
httpClient = null;
}
}
return null;
}
/**
* 发送POST请求，支持HTTP与HTTPS, 参数放入请求体方式
* @param url 请求地址
* @param content 请求参数
* @param charset 返回数据编码
* @return 返回数据
*/
public static String sendPost(String url, String content, String charset) {
if (null == charset){
charset = DEFAULT_CHARSET;
}
CloseableHttpClient httpClient = HttpClientBuilder.create().build();
RequestConfig reqConf = RequestConfig.DEFAULT;
HttpPost httpPost = new HttpPost(url);
try {
httpPost.setEntity(new StringEntity(content, charset));
// 对HTTPS请求进行处理
if (url.toLowerCase().startsWith(HTTPS_PROTOCOL)) {
initSSL(httpClient, getPort(url));
}
// 提交请求并以指定编码获取返回数据
httpPost.setConfig(reqConf);
HttpResponse httpResponse = httpClient.execute(httpPost);
int statuscode = httpResponse.getStatusLine().getStatusCode();
if ((statuscode == HttpStatus.SC_MOVED_TEMPORARILY) || (statuscode == HttpStatus.SC_MOVED_PERMANENTLY)
|| (statuscode == HttpStatus.SC_SEE_OTHER) || (statuscode == HttpStatus.SC_TEMPORARY_REDIRECT)) {
Header header = httpResponse.getFirstHeader("location");
if (header != null) {
String newuri = header.getValue();
if ((newuri == null) || (newuri.equals(""))){
newuri = "/";
}
try {
httpClient.close();
}
catch (Exception e) {
e.printStackTrace();
httpClient = null;
}
return sendGetReq(newuri, null);
}
}
logger.info("请求地址：" + url + "；响应状态：" + httpResponse.getStatusLine());
HttpEntity entity = httpResponse.getEntity();
return EntityUtils.toString(entity, charset);
}
catch (UnsupportedEncodingException e) {
logger.error("不支持当前参数编码格式[" + charset + "],堆栈信息如下", e);
}
catch (ClientProtocolException e) {
logger.error("协议异常,堆栈信息如下", e);
}
catch (IOException e) {
logger.error("网络异常,堆栈信息如下", e);
}
finally {
// 关闭连接，释放资源
try {
httpClient.close();
}
catch (Exception e) {
e.printStackTrace();
httpClient = null;
}
}
return null;
}
/**
* 初始化HTTPS请求服务
* @param httpClient HTTP客户端
* @param port 端口
*/
public static void initSSL(CloseableHttpClient httpClient, int port) {
SSLContext sslContext = null;
try {
sslContext = SSLContext.getInstance("SSL");
final X509TrustManager trustManager = new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return null;
}
};
// 使用TrustManager来初始化该上下文,TrustManager只是被SSL的Socket所使用
sslContext.init(null, new TrustManager[] { trustManager }, null);
ConnectionSocketFactory ssf = new SSLConnectionSocketFactory(sslContext);
Registry r = RegistryBuilder. create().register("https", ssf).build();
BasicHttpClientConnectionManager ccm = new BasicHttpClientConnectionManager(r);
HttpClients.custom().setConnectionManager(ccm).build();
}
catch (KeyManagementException e) {
e.printStackTrace();
}
catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
}