使用httpClient連接https時使用服務端證書（self-signed certificate）的方法

使用httpClient連接https時一般要在客戶端引入證書。引入方法有三種：

1、在jdk中導入證書；

2、將證書路徑設置到環境變量中：

System.setProperty("javax.net.ssl.trustStore", keyStore_path)
System.setProperty("javax.net.ssl.trustStorePassword", keyStore_password)

3、啟動java進程時將證書路徑加入到啟動參數中。

有時訪問https網站時是不需要證書的。有時使用客戶端證書不一定成功， 拋各種各樣與證書相關的錯誤。這時可以使用服務端證書（self-signed certificate）。方法很簡單，只需在httpClient調用之前先注銷默認的Socket Factory，使用自定義的Socket Factory：

        org.apache.commons.httpclient.protocol.Protocol.unregisterProtocol("https");
        org.apache.commons.httpclient.protocol.Protocol.registerProtocol("https", new Protocol("https", (ProtocolSocketFactory) new org.apache.commons.httpclient.contrib.ssl.EasySSLProtocolSocketFactory(), 13087));
        

 org.apache.commons.httpclient.protocol.Protocol.unregisterProtocol("https"); org.apache.commons.httpclient.protocol.Protocol.registerProtocol("https", new Protocol("https", (ProtocolSocketFactory) new org.apache.commons.httpclient.contrib.ssl.EasySSLProtocolSocketFactory(), 13087));

它需要依賴not-yet-commons-ssl-0.3.9.jar包:

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>not-yet-commons-ssl</artifactId>
    <version>0.3.9</version>
</dependency>

我遇到拋的異常為：

org.apache.axis2.AxisFault: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors
at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:83)
…
Caused by: com.ctc.wstx.exc.WstxIOException: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors
at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:313)
at org.apache.axiom.om.impl.MTOMXMLStreamWriter.flush(MTOMXMLStreamWriter.java:146)
…
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:150)
…
Caused by: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors
at sun.security.validator.PKIXValidator.doValidate(PKIXValidator.java:187)
…
Caused by: java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors
at sun.security.provider.certpath.PKIXCertPathValidator.engineValidate(PKIXCertPathValidator.java:195)
at java.security.cert.CertPathValidator.validate(CertPathValidator.java:206)
at sun.security.validator.PKIXValidator.doValidate(PKIXValidator.java:182)
… 49 more