Java-HttpUtils请求工具类

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.commons.lang3.StringUtils;
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.AuthSchemes;
import org.apache.http.client.config.CookieSpecs;
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.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.X509Certificate;
import java.util.*;

/**
 * @ClassName HttpsUtils
 * @Description Https请求工具
 * @Version 1.0
 */
public class HttpsUtils {

    /**
     * 发起Get请求
     *
     * @param host    <a href="https://ip:port/">格式：https://ip:port/</a>
     * @param path    接口路径
     * @param headers 请求头
     * @param query   添加到请求路径上的参数
     * @return HTTP请求返回内容
     * @throws Exception httpClient处理异常
     */
    public static HttpResponse doGet(String host, String path,
                                     Map<String, String> headers,
                                     Map<String, String> query)
            throws Exception {
        HttpClient httpClient = wrapClient(host, path);
        HttpGet request = new HttpGet(buildUrl(host, path, query));
        for (Map.Entry<String, String> e : headers.entrySet()) {
            request.addHeader(e.getKey(), e.getValue());
        }
        return httpClient.execute(request);
    }

    /**
     * 发起Post请求
     *
     * @param host    <a href="https://ip:port/">格式：https://ip:port/</a>
     * @param path    接口路径
     * @param headers 请求头
     * @param query   添加到请求路径上的参数
     * @param body    请求体
     * @return HttpResponse:httpClient请求返回
     * <br>可使用以下方法获取返回内容:<br>EntityUtils.toString(httpResponse.getEntity())
     * @throws Exception httpClient处理异常
     */
    public static HttpResponse doPost(String host, String path,
                                      Map<String, String> headers,
                                      Map<String, String> query,
                                      Map<String, String> body)
            throws Exception {
        HttpClient httpClient = wrapClient(host, path);
        HttpPost request = new HttpPost(buildUrl(host, path, query));
        for (Map.Entry<String, String> e : headers.entrySet()) {
            request.addHeader(e.getKey(), e.getValue());
        }
        if (body != null) {
            List<NameValuePair> nameValuePairList = new ArrayList<>();

            for (String key : body.keySet()) {
                nameValuePairList.add(new BasicNameValuePair(key, body.get(key)));
            }
            UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairList, "utf-8");
            formEntity.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
            request.setEntity(formEntity);
        }
        return httpClient.execute(request);
    }

    /**
     * 发起Post请求
     *
     * @param host    <a href="https://ip:port/">格式：https://ip:port/</a>
     * @param path    接口路径
     * @param headers 请求头
     * @param query   添加到请求路径上的参数
     * @param body    请求体
     * @return HttpResponse:httpClient请求返回
     * <br>可使用以下方法获取返回内容:<br>EntityUtils.toString(httpResponse.getEntity())
     * @throws Exception httpClient处理异常
     */
    public static HttpResponse doPost(String host, String path,
                                      Map<String, String> headers,
                                      Map<String, String> query,
                                      String body)
            throws Exception {
        HttpClient httpClient = wrapClient(host, path);
        HttpPost request = new HttpPost(buildUrl(host, path, query));
        for (Map.Entry<String, String> e : headers.entrySet()) {
            request.addHeader(e.getKey(), e.getValue());
        }
        if (StringUtils.isNotBlank(body)) {
            request.setEntity(new StringEntity(body, "utf-8"));
        }
        return httpClient.execute(request);
    }

    /**
     * 发起Post请求
     *
     * @param host    <a href="https://ip:port/">格式：https://ip:port/</a>
     * @param path    接口路径
     * @param headers 请求头
     * @param query   添加到请求路径上的参数
     * @param body    请求体
     * @return HttpResponse:httpClient请求返回
     * <br>可使用以下方法获取返回内容:<br>EntityUtils.toString(httpResponse.getEntity())
     * @throws Exception httpClient处理异常
     */
    public static HttpResponse doPost(String host, String path,
                                      Map<String, String> headers,
                                      Map<String, String> query,
                                      byte[] body)
            throws Exception {
        HttpClient httpClient = wrapClient(host, path);
        HttpPost request = new HttpPost(buildUrl(host, path, query));
        for (Map.Entry<String, String> e : headers.entrySet()) {
            request.addHeader(e.getKey(), e.getValue());
        }
        if (body != null) {
            request.setEntity(new ByteArrayEntity(body));
        }
        return httpClient.execute(request);
    }

    /**
     * 发起Put请求
     *
     * @param host    <a href="https://ip:port/">格式：https://ip:port/</a>
     * @param path    接口路径
     * @param headers 请求头
     * @param query   添加到请求路径上的参数
     * @param body    请求体
     * @return HttpResponse:httpClient请求返回
     * <br>可使用以下方法获取返回内容:<br>EntityUtils.toString(httpResponse.getEntity())
     * @throws Exception httpClient处理异常
     */
    public static HttpResponse doPut(String host, String path,
                                     Map<String, String> headers,
                                     Map<String, String> query,
                                     String body)
            throws Exception {
        HttpClient httpClient = wrapClient(host, path);
        HttpPut request = new HttpPut(buildUrl(host, path, query));
        for (Map.Entry<String, String> e : headers.entrySet()) {
            request.addHeader(e.getKey(), e.getValue());
        }
        if (StringUtils.isNotBlank(body)) {
            request.setEntity(new StringEntity(body, "utf-8"));
        }
        return httpClient.execute(request);
    }

    /**
     * 发起Put请求
     *
     * @param host    <a href="https://ip:port/">格式：https://ip:port/</a>
     * @param path    接口路径
     * @param headers 请求头
     * @param query   添加到请求路径上的参数
     * @param body    请求体
     * @return HttpResponse:httpClient请求返回
     * <br>可使用以下方法获取返回内容:<br>EntityUtils.toString(httpResponse.getEntity())
     * @throws Exception httpClient处理异常
     */
    public static HttpResponse doPut(String host, String path,
                                     Map<String, String> headers,
                                     Map<String, String> query,
                                     byte[] body)
            throws Exception {
        HttpClient httpClient = wrapClient(host, path);
        HttpPut request = new HttpPut(buildUrl(host, path, query));
        for (Map.Entry<String, String> e : headers.entrySet()) {
            request.addHeader(e.getKey(), e.getValue());
        }
        if (body != null) {
            request.setEntity(new ByteArrayEntity(body));
        }
        return httpClient.execute(request);
    }

    /**
     * 发起Delete请求
     *
     * @param host    <a href="https://ip:port/">格式：https://ip:port/</a>
     * @param path    接口路径
     * @param headers 请求头
     * @param query   添加到请求路径上的参数
     * @return HttpResponse:httpClient请求返回
     * <br>可使用以下方法获取返回内容:<br>EntityUtils.toString(httpResponse.getEntity())
     * @throws Exception httpClient处理异常
     */
    public static HttpResponse doDelete(String host, String path,
                                        Map<String, String> headers,
                                        Map<String, String> query)
            throws Exception {
        HttpClient httpClient = wrapClient(host, path);
        HttpDelete request = new HttpDelete(buildUrl(host, path, query));
        for (Map.Entry<String, String> e : headers.entrySet()) {
            request.addHeader(e.getKey(), e.getValue());
        }
        return httpClient.execute(request);
    }

    /**
     * 构建请求的 url
     *
     * @param host     <a href="https://ip:port/">格式：https://ip:port/</a>
     * @param path     接口路径
     * @param queryMap 添加到请求路径上的参数
     * @return 请求URL
     * @throws UnsupportedEncodingException -  如果不支持指定的编
     */
    private static String buildUrl(String host, String path, Map<String, String> queryMap) throws UnsupportedEncodingException {
        StringBuilder sbUrl = new StringBuilder();
        if (!StringUtils.isBlank(host)) {
            sbUrl.append(host);
        }
        if (!StringUtils.isBlank(path)) {
            sbUrl.append(path);
        }
        if (null != queryMap) {
            StringBuilder sbQuery = new StringBuilder();
            for (Map.Entry<String, String> query : queryMap.entrySet()) {
                if (0 < sbQuery.length()) {
                    sbQuery.append("&");
                }
                if (StringUtils.isBlank(query.getKey()) && !StringUtils.isBlank(query.getValue())) {
                    sbQuery.append(query.getValue());
                }
                if (!StringUtils.isBlank(query.getKey())) {
                    sbQuery.append(query.getKey());
                    if (!StringUtils.isBlank(query.getValue())) {
                        sbQuery.append("=");
                        sbQuery.append(URLEncoder.encode(query.getValue(), "utf-8"));
                    }
                }
            }
            if (0 < sbQuery.length()) {
                sbUrl.append("?").append(sbQuery);
            }
        }
        return sbUrl.toString();
    }

    /**
     * 获取 HttpClient
     *
     * @param host <a href="https://ip:port/">https://ip:port/</a>
     * @param path 接口路径
     * @return HttpClient
     */
    private static HttpClient wrapClient(String host, String path) {
        HttpClient httpClient = HttpClientBuilder.create().build();
        if (host != null && host.startsWith("https://")) {
            return sslClient();
        } else if (StringUtils.isBlank(host) && path != null && path.startsWith("https://")) {
            return sslClient();
        }
        return httpClient;
    }

    /**
     * 在调用SSL之前需要重写验证方法，取消检测SSL
     * 创建ConnectionManager，添加Connection配置信息
     *
     * @return HttpClient 支持https
     */
    private static HttpClient sslClient() {
        try {
            // 在调用SSL之前需要重写验证方法，取消检测SSL
            X509TrustManager trustManager = new X509TrustManager() {
                @Override
                public X509Certificate[] getAcceptedIssuers() {
                    return null;
                }

                @Override
                public void checkClientTrusted(X509Certificate[] xcs, String str) {
                }

                @Override
                public void checkServerTrusted(X509Certificate[] xcs, String str) {
                }
            };
            SSLContext ctx = SSLContext.getInstance(SSLConnectionSocketFactory.TLS);
            ctx.init(null, new TrustManager[]{trustManager}, null);
            SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(ctx, NoopHostnameVerifier.INSTANCE);
            // 创建Registry
            RequestConfig requestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD_STRICT)
                    .setExpectContinueEnabled(Boolean.TRUE).setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM, AuthSchemes.DIGEST))
                    .setProxyPreferredAuthSchemes(Collections.singletonList(AuthSchemes.BASIC)).build();
            Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                    .register("http", PlainConnectionSocketFactory.INSTANCE)
                    .register("https", socketFactory).build();
            // 创建ConnectionManager，添加Connection配置信息
            PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
            return HttpClients.custom().setConnectionManager(connectionManager)
                    .setDefaultRequestConfig(requestConfig).build();
        } catch (KeyManagementException | NoSuchAlgorithmException ex) {
            throw new RuntimeException(ex);
        }
    }

    /**
     * 将结果转换成JSONObject
     *
     * @param httpResponse httpClient请求返回内容
     * @return 返回内容json字段
     * @throws IOException 转换异常
     */
    public static JSONObject getJson(HttpResponse httpResponse) throws IOException {
        HttpEntity entity = httpResponse.getEntity();
        String resp = EntityUtils.toString(entity, "UTF-8");
        EntityUtils.consume(entity);
        return JSON.parseObject(resp);
    }
}