JAVA makes POST requests for of HTTPS instances using HttpClient
- 2020-05-17 05:36:30
- OfStack
Recently, we need to make a wrapper for the customer's interface, and then make it available for other system calls of our company. The customer interface is implemented with HTTP URL. I want to make a request with HttpClient package.
1. Write an SSLClient class and inherit to 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;
// Used for Https The request of 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. Write a class that sends an post request using HttpClient
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;
/*
* using HttpClient for post Requested utility class
*/
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);
// Set the parameters
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. Call the test code requested by post
package com.pcmall.service.sale.miaomore.impl;
import java.util.HashMap;
import java.util.Map;
// Test the interface
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();
}
}
Is not very understand BasicNameValuePair usage at first, then slowly groping under 1, find BasicNameValuePair is stored key/value pair of classes, when adding new key and value value, it will automatically to pack into http format, = and & symbols, such as https: / / xxx xxx. xxx/xxx/xxxx/delivery & # 63; delivery_code = DQZZSM2A & timestamp = 1479198840000 & sign = F209C33FEADE99F93E8970FA0F68D3EB, we all need not oneself splicing and matching, personal think it's very convenient to use and the accuracy is high, hope you can help to you!