标签：set 出现 加密方式 value tco 允许 auth factor apach
http请求是我们常用的一种web应用的应用层协议，但是由于它的不安全性，现在正在逐渐向https协议过渡。https协议是在http的基础上进行了隧道加密，加密方式有SSL和TLS两种。当server用https协议进行数据交换后，client请求server时会对server的证书进行校验，如果server端证书为四大证书机构颁发的证书或者其授权机构颁发的证书，则允许进一步请求，否则会警告证书不受信任。更多信息可参考https://www.cnblogs.com/handsomeBoys/p/6556336.html
当用httpclient进行请求https，会提示找不到有效的证书（unable to find valid certification path to requested target）
出现这种情况就是server端的证书不被信任，可以通过重写一个类继承DefaultHttpClient类,代码如下：
1 import org.apache.http.conn.ClientConnectionManager; 2 import org.apache.http.conn.scheme.Scheme; 3 import org.apache.http.conn.scheme.SchemeRegistry; 4 import org.apache.http.conn.ssl.SSLSocketFactory; 5 import org.apache.http.impl.client.DefaultHttpClient; 6 7 import javax.net.ssl.SSLContext; 8 import javax.net.ssl.TrustManager; 9 import javax.net.ssl.X509TrustManager; 10 import java.security.cert.CertificateException; 11 import java.security.cert.X509Certificate; 12 13 public class SSLClient extends DefaultHttpClient { 14 public SSLClient() throws Exception{ 15 super(); 16 SSLContext ctx = SSLContext.getInstance("TLS"); 17 X509TrustManager tm = new X509TrustManager() { 18 @Override 19 public void checkClientTrusted(X509Certificate[] chain, 20 String authType) throws CertificateException { 21 } 22 @Override 23 public void checkServerTrusted(X509Certificate[] chain, 24 String authType) throws CertificateException { 25 } 26 @Override 27 public X509Certificate[] getAcceptedIssuers() { 28 return null; 29 } 30 }; 31 ctx.init(null, new TrustManager[]{tm}, null); 32 SSLSocketFactory ssf = new SSLSocketFactory(ctx,SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); 33 ClientConnectionManager ccm = this.getConnectionManager(); 34 SchemeRegistry sr = ccm.getSchemeRegistry(); 35 sr.register(new Scheme("https", 443, ssf)); 36 } 37 }
然后在进行https请求创建HttpClient对象时用这个类的构造器创建对象就可以实现https请求，例如：
1 import org.apache.http.Header; 2 import org.apache.http.HttpResponse; 3 import org.apache.http.client.methods.HttpGet; 4 import org.apache.http.impl.client.CloseableHttpClient; 5 6 public class RestApi { 7 8 public static String getCsrf(){ 9 String csrfToken = ""; 10 try { 11 CloseableHttpClient client = new SSLClient(); 12 String url = "https://10.67.19.186"; 13 HttpGet get = new HttpGet(url); 14 HttpResponse response = client.execute(get); 15 Header setCookidHeader = response.getFirstHeader("Set-Cookie"); 16 csrfToken = setCookidHeader.getValue().split(";")[0].split("=")[1]; 17 } catch (Exception e) { 18 e.printStackTrace(); 19 } 20 return csrfToken; 21 }
标签：set 出现 加密方式 value tco 允许 auth factor apach
原文地址：https://www.cnblogs.com/calvin1102/p/10755421.html
