诡异的UnknownHostException

来源：互联网发布：plc与单片机应用场合编辑：程序博客网时间：2024/04/30 07:31

android4.2.x上访问一个地址出现一个神奇的异常，搞半天不知道为什么，最后发现，http://test_hh.fa.com 这个host有下滑线，带下滑线会导致urlconnection出问题，mark一下，解决办法就是和域名解析的人商量一下，换一个不带下滑线的域名

<pre class="html" name="code">/System.err: java.net.UnknownHostException: http://test_hh.fa.com09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at libcore.net.http.HttpConnection$Address.<init>(HttpConnection.java:282)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:316)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at libcore.net.http.HttpEngine.connect(HttpEngine.java:311)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:81)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at libcore.net.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:197)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at com.seekting.demo2016.App$1.run(App.java:68)09-18 16:42:59.963 15988-16008/com.seekting.demo2016 W/System.err:     at java.lang.Thread.run(Thread.java:856)

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