JAVA利用HttpClient进行POST请求(HTTPS)实例
最近,需要对客户的接口做一个包装,然后供自己公司别的系统调用,客户接口是用HTTPURL实现的,我想用HttpClient包进行请求,同时由于请求的URL是HTTPS的,为了避免需要证书,所以用一个类继承DefaultHttpClient类,忽略校验过程。
1.写一个SSLClient类,继承至HttpClient
packagecom.pcmall.service.sale.miaomore.impl; importjava.security.cert.CertificateException; importjava.security.cert.X509Certificate; importjavax.net.ssl.SSLContext; importjavax.net.ssl.TrustManager; importjavax.net.ssl.X509TrustManager; importorg.apache.http.conn.ClientConnectionManager; importorg.apache.http.conn.scheme.Scheme; importorg.apache.http.conn.scheme.SchemeRegistry; importorg.apache.http.conn.ssl.SSLSocketFactory; importorg.apache.http.impl.client.DefaultHttpClient; //用于进行Https请求的HttpClient publicclassSSLClientextendsDefaultHttpClient{ publicSSLClient()throwsException{ super(); SSLContextctx=SSLContext.getInstance("TLS"); X509TrustManagertm=newX509TrustManager(){ @Override publicvoidcheckClientTrusted(X509Certificate[]chain, StringauthType)throwsCertificateException{ } @Override publicvoidcheckServerTrusted(X509Certificate[]chain, StringauthType)throwsCertificateException{ } @Override publicX509Certificate[]getAcceptedIssuers(){ returnnull; } }; ctx.init(null,newTrustManager[]{tm},null); SSLSocketFactoryssf=newSSLSocketFactory(ctx,SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); ClientConnectionManagerccm=this.getConnectionManager(); SchemeRegistrysr=ccm.getSchemeRegistry(); sr.register(newScheme("https",443,ssf)); } }
2.写一个利用HttpClient发送post请求的类
packagecom.pcmall.service.sale.miaomore.impl; importjava.util.ArrayList; importjava.util.Iterator; importjava.util.List; importjava.util.Map; importjava.util.Map.Entry; importorg.apache.http.HttpEntity; importorg.apache.http.HttpResponse; importorg.apache.http.NameValuePair; importorg.apache.http.client.HttpClient; importorg.apache.http.client.entity.UrlEncodedFormEntity; importorg.apache.http.client.methods.HttpPost; importorg.apache.http.message.BasicNameValuePair; importorg.apache.http.util.EntityUtils; /* *利用HttpClient进行post请求的工具类 */ publicclassHttpClientUtil{ publicStringdoPost(Stringurl,Map<String,String>map,Stringcharset){ HttpClienthttpClient=null; HttpPosthttpPost=null; Stringresult=null; try{ httpClient=newSSLClient(); httpPost=newHttpPost(url); //设置参数 List<NameValuePair>list=newArrayList<NameValuePair>(); Iteratoriterator=map.entrySet().iterator(); while(iterator.hasNext()){ Entry<String,String>elem=(Entry<String,String>)iterator.next(); list.add(newBasicNameValuePair(elem.getKey(),elem.getValue())); } if(list.size()>0){ UrlEncodedFormEntityentity=newUrlEncodedFormEntity(list,charset); httpPost.setEntity(entity); } HttpResponseresponse=httpClient.execute(httpPost); if(response!=null){ HttpEntityresEntity=response.getEntity(); if(resEntity!=null){ result=EntityUtils.toString(resEntity,charset); } } }catch(Exceptionex){ ex.printStackTrace(); } returnresult; } }
3.调用post请求的测试代码
packagecom.pcmall.service.sale.miaomore.impl; importjava.util.HashMap; importjava.util.Map; //对接口进行测试 publicclassTestMain{ privateStringurl="https://xxx.xxx.xxx/"; privateStringcharset="utf-8"; privateHttpClientUtilhttpClientUtil=null; publicTestMain(){ httpClientUtil=newHttpClientUtil(); } publicvoidtest(){ StringhttpOrgCreateTest=url+"xxx/xxx/delivery"; Map<String,String>createMap=newHashMap<String,String>(); createMap.put("delivery_code","1D1QZ222Z22SM21A"); createMap.put("timestamp","1479198840000"); createMap.put("sign","F2109C333F3EADE929F932E89703FA0F683D43EB"); StringhttpOrgCreateTestRtn=httpClientUtil.doPost(httpOrgCreateTest,createMap,charset); System.out.println("result:"+httpOrgCreateTestRtn); } publicstaticvoidmain(String[]args){ TestMainmain=newTestMain(); main.test(); } }
刚开始不是很明白BasicNameValuePair的用法,后来慢慢摸索了一下,发现BasicNameValuePair是存储键值对的类,当添加新的key和value值,它会自动给装换成http的格式,=和&符号,比如https://xxx.xxx.xxx/xxx/xxxx/delivery?delivery_code=DQZZSM2A×tamp=1479198840000&sign=F209C33FEADE99F93E8970FA0F68D3EB,我们都不用自己进行拼接和匹配了,个人觉得它用起来还是挺方便而且准确度也高,希望可以帮助到大家!
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