前言

上篇文章介绍了 java 发送 http 请求，大家都知道发送http是不安全的 。我也是由于对接了其他企业后总结了一套发送 https的工具。大家网上找方法很多的，但是可不是你粘过来就能用啊，我也是踩过坑的，所以我这个工具，只要粘贴到你们自己项目里就可以用。我的工具跟网上没什么区别，唯一的区别是我亲身实战过，把需要注意的细节列出来，不让大家浪费时间。

 

正文

本文只介绍 发送 post 请求，既然选择了 https 就不会用get，因为get也是不安全的。

 

读前须知

我会把需要依赖的包和引入的包先贴给大家，防止大家引用错误。

                 
      
       org.apache.httpcomponents
                  
      
       httpcore
                  
      
       4.4.8
              
             
                 
      
       org.apache.httpcomponents
                  
      
       httpclient
                  
      
       4.5.3
              
             
                 
      
       org.testng
                  
      
       testng
                  
      
       6.11
                  
      
       test
              
     

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;import javax.net.ssl.SSLContext;import javax.net.ssl.TrustManager;import javax.net.ssl.X509TrustManager;import java.security.cert.CertificateException;import java.security.cert.X509Certificate;<----工具类---->import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.NameValuePair;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.util.ArrayList;import java.util.Iterator;import java.util.List;import java.util.Map;

HTTPS 发送 POST 请求

 

一共需要两个类，不要问为什么，复制过去就能用。

public class SSLClient extends DefaultHttpClient {    public SSLClient() throws Exception {        super();        //传输协议需要根据自己的判断        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));    }}

这里发送 https 的操作有两个，一个是传 json ，一个是传 map ，大家根据自己需要自行复制使用

 

第一种是传 json 作为参数

参数说明：

url：url

map：json参数

charset：写死 utf-8

public String doPost(String url, String map, String charset) {        org.apache.http.client.HttpClient httpClient = null;        HttpPost httpPost = null;        String result = null;        try {            httpClient = new SSLClient();            httpPost = new HttpPost(url);            //设置参数            httpPost.addHeader("Accept", "application/json");httpPost.addHeader("Content-Type", "application/json;charset=UTF-8");            StringEntity stringEntity = new StringEntity(map);            stringEntity.setContentEncoding("UTF-8");            stringEntity.setContentType("application/json");            httpPost.setEntity(stringEntity);            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;    }

测试类，送大家一个MD5加密，其实我就懒得删掉了。

private String url = "https://www.xxxxxxxx.com/openapi/page/gettoken";private String charset = "utf-8";private HttpClient httpClientUtil = new HttpClient();@Test    public void HttpsPostTest() throws Exception {        String ver = "1.0";        String msgId = "91b024e3-06ca-4a79-9993-1472d0fdb973";        String appId = "300011853779";        String timestamp = new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date());        String appKey = "A0702827F21C9CC7DDC93AEF24B6B16B";        String sign = md5(ver + appId + msgId + timestamp + appKey).toUpperCase();        result.put("ver", ver);        result.put("msgId", msgId);        result.put("appId", appId);        result.put("timestamp", timestamp);        result.put("openType", "1");        result.put("message", "");        result.put("abilityId", "");        result.put("expandParams", "");        result.put("signType", "1");        result.put("sign", sign);        String encryptStr = result.toString();        System.out.println("encryptStr：" + encryptStr);        String httpOrgCreateTestRtn = httpClientUtil.doPost(url, encryptStr, charset);        System.out.println("result:" + httpOrgCreateTestRtn);    }    public static String md5(String text) {        String result="";        try {            MessageDigest md = MessageDigest.getInstance("MD5");            md.update(text.getBytes("UTF-8"));            byte b[] = md.digest();            int i;            StringBuffer buf = new StringBuffer("");            for (int offset = 0; offset < b.length; offset++) {                i = b[offset];                if (i < 0)                    i += 256;                if (i < 16)                    buf.append("0");                buf.append(Integer.toHexString(i));            }            result = buf.toString();//       System.out.println("result: " + buf.toString());// 32位的加密//       System.out.println("result: " + buf.toString().substring(8, 24));// 16位的加密        } catch (NoSuchAlgorithmException e) {            // TODO Auto-generated catch block        } catch (UnsupportedEncodingException e) {            // TODO Auto-generated catch block        }        return result;    }

第二种传map作为参数

public String doPost(String url, Map
     
       map, String charset) {        org.apache.http.client.HttpClient httpClient = null;        HttpPost httpPost = null;        String result = null;        try {            httpClient = new SSLClient();            httpPost = new HttpPost(url);            //设置参数            List
      
        list = new ArrayList
       
        ();            Iterator iterator = map.entrySet().iterator();            while (iterator.hasNext()) {                Map.Entry
        
          elem = (Map.Entry
         
          ) iterator.next();       list.add(new BasicNameValuePair(elem.getKey(), elem.getValue()));            }            if (list.size() > 0) {      UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, charset);                entity.setContentType("application/json");                httpPost.setHeader("Accept", "application/json");  httpPost.setHeader("Content-type", "application/json;charset=utf-8");                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;    }
         
        
       
      
     

发送的时候 大家把上面 json 测试的demo 中 JSONObject  改成Map 就可以。