HTTP Client ，post与get工具包

淡淡的烟草味﹌ 2022-05-13 23:05 147阅读 0赞

## **需要的jar包** ##

<dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
      <version>4.4</version>
    </dependency>
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpmime</artifactId>
      <version>4.4</version>
    </dependency>
    <dependency>
      <groupId>net.sf.json-lib</groupId>
      <artifactId>json-lib</artifactId>
      <version>2.4</version>
      <classifier>jdk15</classifier>
    </dependency>

## **类一：** ##

package im.qiaofeng.file.fileuploaddownload.utils;
    
    import com.alibaba.fastjson.JSONObject;
    import im.qiaofeng.file.fileuploaddownload.constants.ErrorCodeConstants;
    import im.qiaofeng.file.fileuploaddownload.exception.UtilException;
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.nio.charset.StandardCharsets;
    import java.util.Iterator;
    import java.util.Map;
    import lombok.extern.slf4j.Slf4j;
    import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.client.HttpClient;
    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.entity.StringEntity;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.util.EntityUtils;
    
    @Slf4j
    public class HttpClientUtil {
    
    
        public static JSONObject Get(String path, Map<String, Object> queryParams) {
            try {
                HttpClient httpclient = HttpClientMng.getClient();
                Iterator<String> iter = queryParams.keySet().iterator();
                String temp = path + "?";
                while (iter.hasNext()) {
                    String key = iter.next();
                    temp = temp + key + "=" + queryParams.get(key) + "&";
                }
                String url = temp.substring(0, temp.lastIndexOf("&"));
                HttpGet httpget = new HttpGet(url);
                HttpResponse response = httpclient.execute(httpget);
                HttpEntity entity = response.getEntity();
                String result = EntityUtils.toString(entity);
                EntityUtils.consume(entity);
                return JSONObject.parseObject(result);
            } catch (IOException e) {
                log.error("发送get请求失败:" + e);
                throw new UtilException(ErrorCodeConstants.SYSTEM_ERROR);
            }
        }
    
        public static JSONObject post(String path, String jsonStr) {
            CloseableHttpClient httpClient = null;
            try {
                httpClient = HttpClients.createDefault();
                HttpPost httpPost = new HttpPost(path);
                //添加传入参数
                httpPost.setEntity(new StringEntity(jsonStr, StandardCharsets.UTF_8));
    
                //发送相应数据
                CloseableHttpResponse reseponse = httpClient.execute(httpPost);
                HttpEntity res = reseponse.getEntity();
                BufferedReader reader = new BufferedReader(new InputStreamReader(res.getContent(), StandardCharsets.UTF_8));
                String result = "";
                String line;
                while ((line = reader.readLine()) != null) {
                    result += line;
                }
                return JSONObject.parseObject(result);
            } catch (Exception e) {
                log.error("发送post请求失败:" + e);
    /**
    *这里是自定义的错误类，自己用时记得自定义
    **/
                throw new UtilException(ErrorCodeConstants.SYSTEM_ERROR);
            }
        }
    
    }

## **类二：** ##

package im.qiaofeng.file.fileuploaddownload.utils;
    
    import javax.net.ssl.HostnameVerifier;
    import javax.net.ssl.SSLContext;
    import lombok.extern.slf4j.Slf4j;
    import org.apache.http.client.HttpClient;
    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.SSLConnectionSocketFactory;
    import org.apache.http.conn.ssl.SSLContextBuilder;
    import org.apache.http.conn.ssl.TrustStrategy;
    import org.apache.http.impl.client.HttpClientBuilder;
    import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
    
    @Slf4j
    public class HttpClientMng {
    
        private static HttpClient client = null;
    
        public static HttpClient getClient() {
            getTrustedHttpClient();
            return client;
        }
    
        @SuppressWarnings("deprecation")
        private static synchronized void getTrustedHttpClient() {
            try {
                if (client == null) {
                    HttpClientBuilder b = HttpClientBuilder.create();
                    // 策略：允许加载所有证书
                    SSLContext sslContext = null;
                    sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
                        @Override
                        public boolean isTrusted(java.security.cert.X509Certificate[] arg0, String arg1) {
                            return true;
                        }
                    }).build();
                    b.setSslcontext(sslContext);
                    // 不检测主机名
                    HostnameVerifier hostnameVerifier = SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;
                    // 创建SSLSocketFactory来加载配置
                    SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(sslContext,
                        hostnameVerifier);
                    Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder
                        .<ConnectionSocketFactory>create()
                        .register("http", PlainConnectionSocketFactory.getSocketFactory())
                        .register("https", sslSocketFactory).build();
                    // 创建connection-manager，配置Registry。支持多线程的使用
                    PoolingHttpClientConnectionManager connMgr = new PoolingHttpClientConnectionManager(
                        socketFactoryRegistry);
                    b.setConnectionManager(connMgr);
                    // 构建HttpClient
                    client = b.build();
                }
            } catch (Exception e) {
                log.error("获取httpClient对象失败" + e);
            }
        }
    
    }