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java网络请求,get、post、httpclientUtil

java网络请求,get、post、httpclientUtil

作者: 刘彦青 | 来源:发表于2020-08-19 08:01 被阅读0次
    package com.yan.deme.util;
    
    import org.apache.http.Consts;
    import org.apache.http.HttpEntity;
    import org.apache.http.NameValuePair;
    import org.apache.http.client.ClientProtocolException;
    import org.apache.http.client.entity.UrlEncodedFormEntity;
    import org.apache.http.client.methods.*;
    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.entity.StringEntity;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.message.BasicNameValuePair;
    import org.apache.http.util.EntityUtils;
    
    import javax.net.ssl.SSLContext;
    import java.io.IOException;
    import java.security.cert.CertificateException;
    import java.security.cert.X509Certificate;
    import java.text.ParseException;
    import java.util.HashMap;
    import java.util.LinkedList;
    import java.util.List;
    import java.util.Map;
    
    /**
     * http请求客户端
     * @author LYQ
     * 
     */
    public class HttpClient {
        private String url;
        private Map<String, String> param;
        private int statusCode;
        private String content;
        private String xmlParam;
        private boolean isHttps;
    
        public boolean isHttps() {
            return isHttps;
        }
    
        public void setHttps(boolean isHttps) {
            this.isHttps = isHttps;
        }
    
        public String getXmlParam() {
            return xmlParam;
        }
    
        public void setXmlParam(String xmlParam) {
            this.xmlParam = xmlParam;
        }
    
        public HttpClient(String url, Map<String, String> param) {
            this.url = url;
            this.param = param;
        }
    
        public HttpClient(String url) {
            this.url = url;
        }
    
        public void setParameter(Map<String, String> map) {
            param = map;
        }
    
        public void addParameter(String key, String value) {
            if (param == null) {
                param = new HashMap<String, String>();
            }
            param.put(key, value);
        }
    
        public void post() throws ClientProtocolException, IOException {
            HttpPost http = new HttpPost(url);
            setEntity(http);
            execute(http);
        }
    
        public void put() throws ClientProtocolException, IOException {
            HttpPut http = new HttpPut(url);
            setEntity(http);
            execute(http);
        }
    
        public void get() throws ClientProtocolException, IOException {
            if (param != null) {
                StringBuilder url = new StringBuilder(this.url);
                boolean isFirst = true;
                for (String key : param.keySet()) {
                    if (isFirst) {
                        url.append("?");
                        isFirst = false;
                    } else {
                        url.append("&");
                    }
                    url.append(key).append("=").append(param.get(key));
                }
                this.url = url.toString();
            }
            HttpGet http = new HttpGet(url);
            execute(http);
        }
    
        /**
         * set http post,put param
         */
        private void setEntity(HttpEntityEnclosingRequestBase http) {
            if (param != null) {
                List<NameValuePair> nvps = new LinkedList<NameValuePair>();
                for (String key : param.keySet()) {
                    nvps.add(new BasicNameValuePair(key, param.get(key))); // 参数
                }
                http.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); // 设置参数
            }
            if (xmlParam != null) {
                http.setEntity(new StringEntity(xmlParam, Consts.UTF_8));
            }
        }
    
        private void execute(HttpUriRequest http) throws ClientProtocolException,
                IOException {
            CloseableHttpClient httpClient = null;
            try {
                if (isHttps) {
                    SSLContext sslContext = new SSLContextBuilder()
                            .loadTrustMaterial(null, new TrustStrategy() {
                                // 信任所有
                                @Override
                                public boolean isTrusted(X509Certificate[] chain,
                                                         String authType)
                                        throws CertificateException {
                                    return true;
                                }
                            }).build();
                    SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                            sslContext);
                    httpClient = HttpClients.custom().setSSLSocketFactory(sslsf)
                            .build();
                } else {
                    httpClient = HttpClients.createDefault();
                }
                CloseableHttpResponse response = httpClient.execute(http);
                try {
                    if (response != null) {
                        if (response.getStatusLine() != null) {
                            statusCode = response.getStatusLine().getStatusCode();
                        }
                        HttpEntity entity = response.getEntity();
                        // 响应内容
                        content = EntityUtils.toString(entity, Consts.UTF_8);
                    }
                } finally {
                    response.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                httpClient.close();
            }
        }
    
        public int getStatusCode() {
            return statusCode;
        }
    
        public String getContent() throws ParseException, IOException {
            return content;
        }
    
    }
    
    

    httpclient 已经很简单了可以自己封装符合自己业务的httpclient工具类

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