package cn.mb.cloud.auth.security.util;
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import org.apache.commons.lang.StringUtils;
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import org.apache.http.HttpEntity;
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import org.apache.http.NameValuePair;
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import org.apache.http.client.config.RequestConfig;
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import org.apache.http.client.entity.UrlEncodedFormEntity;
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import org.apache.http.client.methods.CloseableHttpResponse;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
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import org.apache.http.entity.StringEntity;
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import org.apache.http.impl.client.CloseableHttpClient;
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import org.apache.http.impl.client.HttpClientBuilder;
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import org.apache.http.impl.client.HttpClients;
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import org.apache.http.message.BasicNameValuePair;
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import org.apache.http.ssl.SSLContextBuilder;
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import org.apache.http.util.EntityUtils;
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import javax.net.ssl.SSLContext;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.net.URL;
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import java.net.URLConnection;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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/*
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* 利用HttpClient进行post请求的工具类
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*/
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public class HttpClientUtil {
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private static final String DEFAULT_CHARSET = "UTF-8";
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private static String reqCharset = DEFAULT_CHARSET;
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private static String resCharset = DEFAULT_CHARSET;
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private static CloseableHttpClient httpClient;
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/**
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* 信任SSL证书
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*/
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static {
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try {
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SSLContext sslContext = SSLContextBuilder.create().useProtocol(SSLConnectionSocketFactory.SSL).loadTrustMaterial((x, y) -> true).build();
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RequestConfig config = RequestConfig.custom().setConnectTimeout(30000).setSocketTimeout(30000).build();
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httpClient = HttpClientBuilder.create().setDefaultRequestConfig(config).setSSLContext(sslContext).setSSLHostnameVerifier((x, y) -> true).build();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* 向指定URL发送GET方法的请求
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*
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* @param url
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* 发送请求的URL
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* @param param
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* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
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* @return URL 所代表远程资源的响应结果
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*/
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public static String sendGet(String url, String param) {
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String result = "";
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BufferedReader in = null;
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try {
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String urlNameString = url + "?" + param;
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URL realUrl = new URL(urlNameString);
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// 打开和URL之间的连接
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URLConnection connection = realUrl.openConnection();
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// 设置通用的请求属性
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connection.setRequestProperty("accept", "*/*");
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connection.setRequestProperty("connection", "Keep-Alive");
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connection.setRequestProperty("user-agent",
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"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
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// 建立实际的连接
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connection.connect();
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// 获取所有响应头字段
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Map<String, List<String>> map = connection.getHeaderFields();
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// 遍历所有的响应头字段
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for (String key : map.keySet()) {
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System.out.println(key + "--->" + map.get(key));
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}
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// 定义 BufferedReader输入流来读取URL的响应
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in = new BufferedReader(new InputStreamReader(
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connection.getInputStream()));
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String line;
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while ((line = in.readLine()) != null) {
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result += line;
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}
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} catch (Exception e) {
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System.out.println("发送GET请求出现异常！" + e);
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e.printStackTrace();
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}
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// 使用finally块来关闭输入流
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finally {
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try {
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if (in != null) {
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in.close();
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}
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} catch (Exception e2) {
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e2.printStackTrace();
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}
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}
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return result;
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}
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/**
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* 向指定 URL 发送POST方法的请求
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*
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* @param url
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* 发送请求的 URL
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* @param param
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* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
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* @return 所代表远程资源的响应结果
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*/
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public static String sendPost(String url, String param) {
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PrintWriter out = null;
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BufferedReader in = null;
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String result = "";
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try {
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URL realUrl = new URL(url);
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// 打开和URL之间的连接
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URLConnection conn = realUrl.openConnection();
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// 设置通用的请求属性
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conn.setRequestProperty("accept", "*/*");
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conn.setRequestProperty("connection", "Keep-Alive");
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conn.setRequestProperty("user-agent",
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"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
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// 发送POST请求必须设置如下两行
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conn.setDoOutput(true);
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conn.setDoInput(true);
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// 获取URLConnection对象对应的输出流
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out = new PrintWriter(conn.getOutputStream());
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// 发送请求参数
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out.print(param);
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// flush输出流的缓冲
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out.flush();
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// 定义BufferedReader输入流来读取URL的响应
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in = new BufferedReader(
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new InputStreamReader(conn.getInputStream()));
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String line;
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while ((line = in.readLine()) != null) {
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result += line;
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}
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} catch (Exception e) {
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System.out.println("发送 POST 请求出现异常！"+e);
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e.printStackTrace();
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}
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//使用finally块来关闭输出流、输入流
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finally{
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try{
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if(out!=null){
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out.close();
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}
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if(in!=null){
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in.close();
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}
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}
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catch(IOException ex){
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ex.printStackTrace();
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}
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}
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return result;
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}
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public static String doPost(String url, Map<String, String> params, Map<String, String> headers) throws Exception {
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String result = "";
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// 创建Httpclient对象
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CloseableHttpClient httpclient = HttpClients.createDefault();
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// 创建http POST请求
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HttpPost httpPost = new HttpPost(url);
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// 设置2个post参数，一个是scope、一个是q
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List<NameValuePair> parameters = new ArrayList<NameValuePair>();
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Set<String> keys = params.keySet();
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for (String key : keys) {
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parameters.add(new BasicNameValuePair(key, params.get(key)));
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}
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// 构造一个form表单式的实体
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UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters, reqCharset);
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// 将请求实体设置到httpPost对象中
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httpPost.setEntity(formEntity);
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httpPost.addHeader("Content-Type", "application/json");
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// 伪装浏览器请求
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// httpPost.setHeader(
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// "User-Agent",
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// "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36");
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//封装header
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if(headers != null){
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Set<String> headerKeys = headers.keySet();
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for(String headerkey : headerKeys){
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httpPost.addHeader(headerkey,headers.get(headerkey));
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}
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}
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CloseableHttpResponse response = null;
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try {
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// 执行请求
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response = httpclient.execute(httpPost);
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// 判断返回状态是否为200
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if (response.getStatusLine().getStatusCode() == 200) {
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// 获取服务端响应的数据
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result = EntityUtils.toString(response.getEntity(), resCharset);
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System.out.println(result);
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}
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} finally {
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if (response != null) {
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response.close();
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}
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httpclient.close();
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}
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return result;
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}
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/**
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* POST body 传JSON
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* @param url
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* @param body
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* @return
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* @throws Exception
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*/
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public static String sendHttpPost(String url, String body) throws Exception {
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CloseableHttpClient httpClient = HttpClients.createDefault();
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HttpPost httpPost = new HttpPost(url);
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httpPost.setEntity(new StringEntity(body,"UTF-8"));
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httpPost.addHeader("Content-Type", "application/json");
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CloseableHttpResponse response = httpClient.execute(httpPost);
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HttpEntity entity = response.getEntity();
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String responseContent = EntityUtils.toString(entity, "UTF-8");
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response.close();
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httpClient.close();
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return responseContent;
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}
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/**
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* post请求 发送json格式的报文 StringEntity
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* @param url
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* @param jsonString
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* @return
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*/
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public static String doHttpsPost(String url, String jsonString) {
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if (StringUtils.isBlank(url)) {
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return null;
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}
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try {
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HttpPost httpPost = new HttpPost(url);
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StringEntity stringEntity = new StringEntity(jsonString, "utf-8");
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stringEntity.setContentType("application/json");
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httpPost.setEntity(stringEntity);
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CloseableHttpResponse response = httpClient.execute(httpPost);
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int statusCode = response.getStatusLine().getStatusCode();
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if (statusCode != 200) {
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httpPost.abort();
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throw new RuntimeException("HttpClient is error status code :"
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+ statusCode);
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}
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HttpEntity entity = response.getEntity();
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String result = null;
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if (entity != null) {
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result = EntityUtils.toString(entity, "utf-8");
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}
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EntityUtils.consume(entity);
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response.close();
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return result;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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}
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