最近，需要對客戶的接口做一個包裝，然後供自己公司別的系統調用，客戶接口是用HTTP URL實現的，我想用HttpClient包進行請求，同時由於請求的URL是HTTPS的，為了避免需要證書，所以用一個類繼承DefaultHttpClient類，忽略校驗過程。
1.寫一個SSLClient類，繼承至HttpClient
package com.pcmall.service.sale.miaomore.impl; import java.security.cert.CertificateException; import java.security.cert.X509Certificate; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import org.apache.http.conn.ClientConnectionManager; import org.apache.http.conn.scheme.Scheme; import org.apache.http.conn.scheme.SchemeRegistry; import org.apache.http.conn.ssl.SSLSocketFactory; import org.apache.http.impl.client.DefaultHttpClient; //用於進行Https請求的HttpClient public class SSLClient extends DefaultHttpClient{ public SSLClient() throws Exception{ super(); SSLContext ctx = SSLContext.getInstance("TLS"); X509TrustManager tm = new X509TrustManager() { @Override public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException { } @Override public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException { } @Override public X509Certificate[] getAcceptedIssuers() { return null; } }; ctx.init(null, new TrustManager[]{tm}, null); SSLSocketFactory ssf = new SSLSocketFactory(ctx,SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); ClientConnectionManager ccm = this.getConnectionManager(); SchemeRegistry sr = ccm.getSchemeRegistry(); sr.register(new Scheme("https", 443, ssf)); } }2.寫一個利用HttpClient發送post請求的類
package com.pcmall.service.sale.miaomore.impl; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Map.Entry; 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.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; /* * 利用HttpClient進行post請求的工具類*/ public class HttpClientUtil { public String doPost(String url,Map<String,String> map,String charset){ HttpClient httpClient = null; HttpPost httpPost = null; String result = null; try{ httpClient = new SSLClient(); httpPost = new HttpPost(url); //設置參數List<NameValuePair> list = new ArrayList<NameValuePair>(); Iterator iterator = map.entrySet().iterator(); while(iterator.hasNext()){ Entry<String,String> elem = (Entry<String, String>) iterator.next(); list.add(new BasicNameValuePair(elem.getKey(),elem.getValue())); } if(list.size() > 0){ UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list,charset); httpPost.setEntity(entity); } HttpResponse response = httpClient.execute(httpPost); if(response != null){ HttpEntity resEntity = response.getEntity(); if(resEntity != null){ result = EntityUtils.toString(resEntity,charset); } } }catch(Exception ex){ ex.printStackTrace(); } return result; } }3.調用post請求的測試代碼
package com.pcmall.service.sale.miaomore.impl; import java.util.HashMap; import java.util.Map; //對接口進行測試public class TestMain { private String url = "https://xxx.xxx.xxx/"; private String charset = "utf-8"; private HttpClientUtil httpClientUtil = null; public TestMain(){ httpClientUtil = new HttpClientUtil(); } public void test(){ String httpOrgCreateTest = url + "xxx/xxx/delivery"; Map<String,String> createMap = new HashMap<String,String>(); createMap.put("delivery_code","1D1QZ222Z22SM21A"); createMap.put("timestamp","1479198840000"); createMap.put("sign","F2109C333F3EADE929F932E89703FA0F683D43EB"); String httpOrgCreateTestRtn = httpClientUtil.doPost(httpOrgCreateTest,createMap,charset); System.out.println("result:"+httpOrgCreateTestRtn); } public static void main(String[] args){ TestMain main = new TestMain(); main.test(); } }剛開始不是很明白BasicNameValuePair的用法，後來慢慢摸索了一下，發現BasicNameValuePair是存儲鍵值對的類，當添加新的key和value值，它會自動給裝換成http的格式，=和&符號，比如https://xxx.xxx.xxx/xxx/xxxx/delivery?delivery_code=DQZZSM2A×tamp=1479198840000&sign=F209C33FEADE99F93E8970FA0F68D3EB，我們都不用自己進行拼接和匹配了，個人覺得它用起來還是挺方便而且準確度也高，希望可以幫助到大家！
以上就是小編為大家帶來的JAVA利用HttpClient進行POST請求(HTTPS)實例全部內容了，希望大家多多支持武林網~