我在將Fiddler作為Java應用的代理時，在使用Java代碼連接Fiddler時遇到了SSL證書相關的錯誤：

liavax.net.ssl. SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building faiat sun. security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun. security.ssl. SSLSocketImpl. fatal(SSLSocketImpl. java:1949)
at sun. security.ssl.Handshaker. fatalSE(Handshaker. java: 302)
at sun. security. ssl. Handshaker.fatalSE(Handshaker. java: 296)
at sun.security.ssl.ClientHandshaker.serverCertificate(clientHandshaker.java:1506)
at sun.security.ssl.clientHandshaker.processMessage(clientHandshaker. java:216)
at sun. security.ssl.Handshaker.processLoop(Handshaker.java:979)
at sun. security.ssl.Handshaker.process_record(Handshaker. java:914)
at sun. security.ssl. SSLSocketImpl.readRecord(SSLSocketImpl. java: 1062)
at sun. security. ssl. SSLSocketImpl.performInitialHandshake(SSLSocketImpl. java:1375)
at sun. security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)
at sun. security. ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)
at org. apache.http.conn. ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketat org. apache.http.impl.conn.DefaultHttpclientConnection0perator.upgrade(DefaultHttpclientConiat org. apache.http.impl. conn.PoolingHttpclientConnectionManager.upgrade(PoolingHttpclientConne

解決的辦法：

從localhost:8888打開Fiddler Echo Service，點擊FiddlerRoot certificate，將安全證書下載到本地，

然后用軟件Portecle打開JDK的cacerts證書庫，將Fiddler的證書導入即可。

當然不使用Portecle，直接用命令行也是可以的。導入之后，Java應用發送的請求，就能成功被Fiddler接收到了。

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