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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