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JAVA利用HttpClient进行POST请求(HTTPS)实例

时间:2020-07-07 13:09     来源/作者:jingxian

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HTTP URL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

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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; 
//用于进行Https请求的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.写一个利用HttpClient发送post请求的类

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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进行post请求的工具类
 */
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); 
      //设置参数 
      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.调用post请求的测试代码

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package com.pcmall.service.sale.miaomore.impl;
 
import java.util.HashMap; 
import java.util.Map; 
//对接口进行测试 
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(); 
  
}

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&timestamp=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!

以上就是小编为大家带来的JAVA利用HttpClient进行POST请求(HTTPS)实例全部内容了,希望大家多多支持服务器之家~

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