How to implement https with httpclient

How to use httpclient to achieve https, I believe that many inexperienced people do not know what to do. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Package com.neusoft.sample.opscopereq

Import java.io.InputStream

Import java.nio.charset.Charset

Import java.security.KeyStore

Import java.security.SecureRandom

Import java.security.cert.CertificateFactory

Import java.util.Base64

Import javax.net.ssl.HostnameVerifier

Import javax.net.ssl.SSLContext

Import javax.net.ssl.SSLSession

Import javax.net.ssl.TrustManagerFactory

Import org.apache.http.HttpEntity

Import org.apache.http.client.methods.CloseableHttpResponse

Import org.apache.http.client.methods.HttpPost

Import org.apache.http.entity.StringEntity

Import org.apache.http.impl.client.CloseableHttpClient

Import org.apache.http.impl.client.HttpClients

Import org.apache.http.util.EntityUtils

Import com.alibaba.fastjson.JSONObject

Public class M {

Public static void main (String [] args) throws Exception {

InputStream inputStream = M.class.getClassLoader () .getResourceAsStream ("sssssss.crt")

CertificateFactory certificateFactory = CertificateFactory.getInstance ("X.509")

KeyStore keyStore = KeyStore.getInstance (KeyStore.getDefaultType ())

KeyStore.load (null)

String certificateAlias = Integer.toString (0)

KeyStore.setCertificateEntry (certificateAlias, certificateFactory.generateCertificate (inputStream))

InputStream.close ()

SSLContext sslContext = SSLContext.getInstance ("TLS")

TrustManagerFactory trustManagerFactory = TrustManagerFactory

.getInstance (TrustManagerFactory.getDefaultAlgorithm ())

TrustManagerFactory.init (keyStore)

SslContext.init (null, trustManagerFactory.getTrustManagers (), new SecureRandom ())

CloseableHttpClient client = HttpClients.custom () .setSSLContext (sslContext) .setSSLHostnameVerifier (new HostnameVerifier () {

Public boolean verify (String hostname, SSLSession session) {

/ / TODO Auto-generated method stub

Return true

}

}) .build ()

HttpPost http = new HttpPost ("www.url.com")

String USERNAME = "user"

String PASSWORD = "psw"

String auth = USERNAME + ":" + PASSWORD

Byte [] encodedAuth = Base64.getEncoder () .encode (auth.getBytes (Charset.forName ("US-ASCII")

String AUTH_HEADER_VAL = "Basic" + new String (encodedAuth)

Http.setHeader ("Authorization", AUTH_HEADER_VAL)

JSONObject paramObj = new JSONObject ()

ParamObj.put ("industryCode", "517")

ParamObj.put ("keyWord", "wholesale")

ParamObj.put ("pageNum", 1)

HttpEntity entity=new StringEntity (paramObj.toJSONString (), "application/json;", "utf-8")

Http.setEntity (entity)

CloseableHttpResponse res = client.execute (http)

String aa = EntityUtils.toString (res.getEntity ())

System.out.println (aa)

}

}

Org.apache.httpcomponents

Httpcore

4.4.10

Org.apache.httpcomponents

Httpclient

4.5.6

After reading the above, have you mastered how to implement https using httpclient? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!