pom.xml

<dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.5</version></dependency><dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpmime</artifactId> <version>4.5.5</version></dependency>

HttpUtil.java

package com.app.core.util;import com.google.common.base.Predicate;import com.google.common.collect.Maps;import lombok.extern.log4j.Log4j2;import org.apache.commons.beanutils.BeanUtils;import org.apache.commons.beanutils.PropertyUtils;import org.apache.commons.collections.MapUtils;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.HttpRequestBase;import org.apache.http.client.utils.URIBuilder;import org.apache.http.client.utils.URLEncodedUtils;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.NoopHostnameVerifier;import org.apache.http.conn.ssl.SSLConnectionSocketFactory;import org.apache.http.entity.ContentType;import org.apache.http.entity.StringEntity;import org.apache.http.entity.mime.MultipartEntityBuilder;import org.apache.http.entity.mime.content.FileBody;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.ssl.SSLContexts;import org.apache.http.ssl.TrustStrategy;import org.apache.http.util.EntityUtils;import javax.net.ssl.SSLContext;import java.io.File;import java.io.FileInputStream;import java.nio.charset.StandardCharsets;import java.security.KeyStore;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;@Log4j2public class HttpUtil { public static final ContentType TEXT_PLAIN = ContentType.create("text/plain", StandardCharsets.UTF_8); /** * HttpClient 连接池 */ private static PoolingHttpClientConnectionManager cm = null; static { // 初始化连接池，可用于请求HTTP/HTTPS（信任所有证书） cm = new PoolingHttpClientConnectionManager(getRegistry()); // 整个连接池最大连接数 cm.setMaxTotal(200); // 每路由最大连接数，默认值是2 cm.setDefaultMaxPerRoute(5); } /** * 发送 HTTP GET请求 * <p>不带请求参数和请求头</p> * * @param url 地址 * @return * @throws Exception */ public static String httpGet(String url) throws Exception { HttpGet httpGet = new HttpGet(url); return doHttp(httpGet); } /** * 发送 HTTP GET请求 * <p>带请求参数，不带请求头</p> * * @param url 地址 * @param params 参数 * @return * @throws Exception * @throws Exception */ public static String httpGet(String url, Map<String, Object> params) throws Exception { // 转换请求参数 List<NameValuePair> pairs = covertParams2NVPS(params); // 装载请求地址和参数 URIBuilder ub = new URIBuilder(); ub.setPath(url); ub.setParameters(pairs); HttpGet httpGet = new HttpGet(ub.build()); return doHttp(httpGet); } /** * 发送 HTTP GET请求 * <p>带请求参数和请求头</p> * * @param url 地址 * @param headers 请求头 * @param params 参数 * @return * @throws Exception * @throws Exception */ public static String httpGet(String url, Map<String, Object> headers, Map<String, Object> params) throws Exception { // 转换请求参数 List<NameValuePair> pairs = covertParams2NVPS(params); // 装载请求地址和参数 URIBuilder ub = new URIBuilder(); ub.setPath(url); ub.setParameters(pairs); HttpGet httpGet = new HttpGet(ub.build()); // 设置请求头 for (Map.Entry<String, Object> param : headers.entrySet()) httpGet.addHeader(param.getKey(), String.valueOf(param.getValue())); return doHttp(httpGet); } /** * 发送 HTTP POST请求 * <p>不带请求参数和请求头</p> * * @param url 地址 * @return * @throws Exception */ public static String httpPost(String url) throws Exception { HttpPost httpPost = new HttpPost(url); return doHttp(httpPost); } /** * 发送 HTTP POST请求 * <p>带请求参数，不带请求头</p> * * @param url 地址 * @param params 参数 * @return * @throws Exception */ public static String httpPost(String url, Map<String, Object> params) throws Exception { // 转换请求参数 List<NameValuePair> pairs = covertParams2NVPS(params); HttpPost httpPost = new HttpPost(url); // 设置请求参数 httpPost.setEntity(new UrlEncodedFormEntity(pairs, StandardCharsets.UTF_8.name())); return doHttp(httpPost); } /** * 发送 HTTP POST请求 * <p>带请求参数和请求头</p> * * @param url 地址 * @param headers 请求头 * @param params 参数 * @return * @throws Exception */ public static String httpPost(String url, Map<String, Object> headers, Map<String, Object> params) throws Exception { // 转换请求参数 List<NameValuePair> pairs = covertParams2NVPS(params); HttpPost httpPost = new HttpPost(url); // 设置请求参数 httpPost.setEntity(new UrlEncodedFormEntity(pairs, StandardCharsets.UTF_8.name())); // 设置请求头 for (Map.Entry<String, Object> param : headers.entrySet()) httpPost.addHeader(param.getKey(), String.valueOf(param.getValue())); return doHttp(httpPost); } /** * 发送HTTP POST/FORM请求 * <p>模拟表单文件上传，默认表单名称为“media”，无附加表单</p> * * @param url 请求地址 * @param pathName 模拟表单文件全路径名 * @return Http POST/FORM 请求结果 * @throws Exception IO流异常 */ public static String httpPostForm(String url, String pathName) throws Exception { return httpPostForm(url, "media", pathName, null); } /** * 发送HTTP POST/FORM请求 * <p>模拟表单文件上传，默认表单名称为“media”，无附加表单</p> * * @param url 请求地址 * @param file 模拟表单文件 * @return Http POST/FORM 请求结果 * @throws Exception IO流异常 */ public static String httpPostForm(String url, File file) throws Exception { return httpPostForm(url, "media", file, null); } /** * 发送 HTTP POST/FORM请求 * <p>模拟表单文件上传</p> * * @param url 请求地址 * @param name 模拟表单名称 * @param pathName 模拟表单文件路径 * @param map 文件上传表单之外的附加表单，新增永久视频素材API需要使用该字段 * @return Http POST/FORM 请求结果 * @throws Exception IO流异常 */ public static String httpPostForm(String url, String name, String pathName, Map<String, Object> map) throws Exception { File file = new File(pathName); // 检查文件名是否合法，以及文件是否存在 if (!file.isFile() || !file.exists()) throw new Exception("HttpClient Post/Form模拟表单请求的文件名不合法或文件不存在"); return httpPostForm(url, name, file, map); } /** * 发送 HTTP POST/FORM请求 * <p>模拟表单文件上传</p> * * @param url 请求地址 * @param name 模拟表单名称 * @param file 模拟表单文件 * @param map 文件上传表单之外的附加表单，新增永久视频素材API需要使用该字段 * @return Http POST/FORM 请求结果 * @throws Exception IO流异常 */ public static String httpPostForm(String url, String name, File file, Map<String, Object> map) throws Exception { // 初始化请求链接 HttpPost httppost = new HttpPost(url); // 组装模拟表单 FileBody body = new FileBody(file); // 组装HTTP表单请求参数 MultipartEntityBuilder builder = MultipartEntityBuilder.create().addPart(name, body); // 附加表单 if (MapUtils.isNotEmpty(map)) { for (Map.Entry<String, Object> entry : map.entrySet()) { if (entry.getValue() == null) continue; builder.addTextBody(entry.getKey(), entry.getValue().toString(), TEXT_PLAIN); } } // 构建HttpEntity HttpEntity entity = builder.build(); // 设置请求参数 httppost.setEntity(entity); return doHttp(httppost); } /** * 发送 HTTP POST请求，参数格式JSON * <p>请求参数是JSON格式，数据编码是UTF-8</p> * * @param url * @param param * @return * @throws Exception */ public static String httpPostJson(String url, String param) throws Exception { HttpPost httpPost = new HttpPost(url); // 设置请求头 httpPost.addHeader("Content-Type", "application/json; charset=UTF-8"); // 设置请求参数 httpPost.setEntity(new StringEntity(param, StandardCharsets.UTF_8.name())); return doHttp(httpPost); } /** * 发送 HTTP POST请求，参数格式XML * <p>请求参数是XML格式，数据编码是UTF-8</p> * * @param url * @param param * @return * @throws Exception */ public static String httpPostXml(String url, String param) throws Exception { HttpPost httpPost = new HttpPost(url); // 设置请求头 httpPost.addHeader("Content-Type", "application/xml; charset=UTF-8"); // 设置请求参数 httpPost.setEntity(new StringEntity(param, StandardCharsets.UTF_8.name())); return doHttp(httpPost); } /** * 发送 HTTPS POST请求 * <p>使用指定的证书文件及密码，不带请求头信息</p> * * @param url * @param param * @param path * @param password * @return * @throws Exception * @throws Exception */ public static String httpsPost(String url, String param, String path, String password) throws Exception { HttpPost httpPost = new HttpPost(url); // 设置请求参数 httpPost.setEntity(new StringEntity(param, StandardCharsets.UTF_8.name())); return doHttps(httpPost, path, password); } /** * 发送 HTTPS POST请求 * <p>使用指定的证书文件及密码，请求头为“application/xml;charset=UTF-8”</p> * * @param url * @param param * @param path * @param password * @return * @throws Exception * @throws Exception */ public static String httpsPostXml(String url, String param, String path, String password) throws Exception { HttpPost httpPost = new HttpPost(url); // 设置请求头 httpPost.addHeader("Content-Type", "application/xml; charset=UTF-8"); // 设置请求参数 httpPost.setEntity(new StringEntity(param, StandardCharsets.UTF_8.name())); return doHttps(httpPost, path, password); } /** * 将Map键值对拼接成QueryString字符串，UTF-8编码 * * @param params * @return * @throws Exception */ public static String getQueryStr(Map<String, Object> params) throws Exception { return URLEncodedUtils.format(covertParams2NVPS(params), StandardCharsets.UTF_8.name()); } /** * 将JavaBean属性拼接成QueryString字符串，UTF-8编码 * * @param bean * @return * @throws Exception */ public static String getQueryStr(Object bean) throws Exception { // 将JavaBean转换为Map Map<String, Object> map = PropertyUtils.describe(bean); // 移除Map中键为“class”和值为空的项 map = Maps.filterEntries(map, new Predicate<Map.Entry<String, Object>>() { public boolean apply(Map.Entry<String, Object> input) { // 返回false表示排除该项 return !(input.getKey().equals("class") || input.getValue() == null); } }); return URLEncodedUtils.format(covertParams2NVPS(map), StandardCharsets.UTF_8.name()); } /** * 将表单字符串转换为JavaBean * * @param queryStr 表单字符串 * @param clazz {@link Class}待转换的JavaBean * @return * @throws Exception */ public static <T> T parseNVPS2Bean(String queryStr, Class<T> clazz) throws Exception { // 将“表单字符串”形式的字符串解析成NameValuePair集合 List<NameValuePair> list = URLEncodedUtils.parse(queryStr, StandardCharsets.UTF_8); Map<String, String> rsMap = new HashMap<String, String>(); // 将NameValuePair集合中的参数装载到Map中 for (NameValuePair nvp : list) rsMap.put(nvp.getName(), nvp.getValue()); // 实例化JavaBean对象 T t = clazz.newInstance(); // 将Map键值对装载到JavaBean中 BeanUtils.populate(t, rsMap); return t; } /** * 转换请求参数，将Map键值对拼接成QueryString字符串 * * @param params * @return */ public static String covertParams2QueryStr(Map<String, Object> params) { List<NameValuePair> pairs = covertParams2NVPS(params); return URLEncodedUtils.format(pairs, StandardCharsets.UTF_8.name()); } /** * 转换请求参数 * * @param params * @return */ public static List<NameValuePair> covertParams2NVPS(Map<String, Object> params) { List<NameValuePair> pairs = new ArrayList<NameValuePair>(); for (Map.Entry<String, Object> param : params.entrySet()) pairs.add(new BasicNameValuePair(param.getKey(), String.valueOf(param.getValue()))); return pairs; } /** * 发送 HTTP 请求 * * @param request * @return * @throws Exception */ private static String doHttp(HttpRequestBase request) throws Exception { // 通过连接池获取连接对象 CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(cm).build(); return doRequest(httpClient, request); } /** * 发送 HTTPS 请求 * <p>使用指定的证书文件及密码</p> * * @param request * @param path * @param password * @return * @throws Exception * @throws Exception */ private static String doHttps(HttpRequestBase request, String path, String password) throws Exception { // 获取HTTPS SSL证书 SSLConnectionSocketFactory csf = getSSLFactory(path, password); // 通过连接池获取连接对象 CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(csf).build(); return doRequest(httpClient, request); } /** * 获取HTTPS SSL连接工厂 * <p>使用指定的证书文件及密码</p> * * @param path 证书全路径 * @param password 证书密码 * @return * @throws Exception * @throws Exception */ private static SSLConnectionSocketFactory getSSLFactory(String path, String password) throws Exception { // 初始化证书，指定证书类型为“PKCS12” KeyStore keyStore = KeyStore.getInstance("PKCS12"); // 读取指定路径的证书 FileInputStream input = new FileInputStream(new File(path)); try { // 装载读取到的证书，并指定证书密码 keyStore.load(input, password.toCharArray()); } finally { input.close(); } // 获取HTTPS SSL证书连接上下文 SSLContext sslContext = SSLContexts.custom().loadKeyMaterial(keyStore, password.toCharArray()).build(); // 获取HTTPS连接工厂，指定TSL版本 SSLConnectionSocketFactory sslCsf = new SSLConnectionSocketFactory(sslContext, new String[]{"SSLv2Hello", "SSLv3", "TLSv1", "TLSv1.2"}, null, SSLConnectionSocketFactory.getDefaultHostnameVerifier()); return sslCsf; } /** * 获取HTTPS SSL连接工厂 * <p>跳过证书校验，即信任所有证书</p> * * @return * @throws Exception */ private static SSLConnectionSocketFactory getSSLFactory() throws Exception { // 设置HTTPS SSL证书信息，跳过证书校验，即信任所有证书请求HTTPS SSLContextBuilder sslBuilder = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() { public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException { return true; } }); // 获取HTTPS SSL证书连接上下文 SSLContext sslContext = sslBuilder.build(); // 获取HTTPS连接工厂 SSLConnectionSocketFactory sslCsf = new SSLConnectionSocketFactory(sslContext, new String[]{"SSLv2Hello", "SSLv3", "TLSv1", "TLSv1.2"}, null, NoopHostnameVerifier.INSTANCE); return sslCsf; } /** * 获取 HTTPClient注册器 * * @return * @throws Exception */ private static Registry<ConnectionSocketFactory> getRegistry() { Registry<ConnectionSocketFactory> registry = null; try { registry = RegistryBuilder.<ConnectionSocketFactory>create().register("http", new PlainConnectionSocketFactory()).register("https", getSSLFactory()).build(); } catch (Exception e) { log.error("获取 HTTPClient注册器失败", e); } return registry; } /** * 处理Http/Https请求，并返回请求结果 * <p>注：默认请求编码方式 UTF-8</p> * * @param httpClient * @param request * @return * @throws Exception */ private static String doRequest(CloseableHttpClient httpClient, HttpRequestBase request) throws Exception { String result = null; CloseableHttpResponse response = null; try { // 获取请求结果 response = httpClient.execute(request); // 解析请求结果 HttpEntity entity = response.getEntity(); // 转换结果 result = EntityUtils.toString(entity, StandardCharsets.UTF_8.name()); // 关闭IO流 EntityUtils.consume(entity); } finally { if (null != response) response.close(); } return result; }}