Ehcache项目启动完毕报错java.net.SocketTimeoutException: connect timed out
Ehcache 项目启动完毕报错java.net.SocketTimeoutException: connect timed out ，这完全是 Ehcache 配置出的问题，下面我们来说说这个问题。
Ehcache 项目启动完毕 的时候报错，详细如下：
java.net.SocketTimeoutException: connect timed out
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
at sun.net.www.http.HttpClient.New(HttpClient.java:308)
at sun.net.www.http.HttpClient.New(HttpClient.java:326)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:997)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:933)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:851)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1301)
at net.sf.ehcache.util.UpdateChecker.getUpdateProperties(UpdateChecker.java:108)
at net.sf.ehcache.util.UpdateChecker.doCheck(UpdateChecker.java:72)
at net.sf.ehcache.util.UpdateChecker.checkForUpdate(UpdateChecker.java:60)
at net.sf.ehcache.util.UpdateChecker.run(UpdateChecker.java:51)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)原因是 Ehcache 配置文件中的<ehcache> 标签updateCheck 属性默认为true ，updateCheck 表示项目启动后， HTTP 请求 ehcache 官方检查是否要更新。所以我们需要设置为updateCheck="false" 如下：
<?xml version="1.0" encoding="UTF-8"?>
<ehcache updateCheck="false" name="shirocache">
<!-- 省略代码 -->
</ehcache>
更详细的Ehcache配置文件请看这篇：Ehcache配置文件详细解释
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