【解决】requires the APR/native library which is not available

When I moved from the old server to the new server today, tomcat reported an error:

 

严重: Failed to initialize connector [Connector[HTTP/1.1-9001]]
org.apache.catalina.LifecycleException: Failed to initialize component [Connector[HTTP/1.1-9001]]
	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:106)
	at org.apache.catalina.core.StandardService.initInternal (StandardService.java:559)
	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
	at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:821)
	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
	at org.apache.catalina.startup.Catalina.load(Catalina.java:638)
	at org.apache.catalina.startup.Catalina.load(Catalina.java:663)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:253)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:427)
Caused by: org.apache.catalina.LifecycleException: The configured protocol [org.apache.coyote.http11.Http11AprProtocol] requires the APR/native library which is not available
	at org.apache.catalina.connector.Connector.initInternal(Connector.java:972)
	at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
	... 12 more

 Checked a lot of information on the Internet,

Windows environment

APR needs to install three components:
　　 1. APR library
　　 2. JNI wrappers for APR used by Tomcat (libtcnative)
　　 3. OpenSSL libraries are
　　downloaded from http://tomcat.heanet.ie/native/1.1.14/binaries/win32/ tcnative-1.1.10.dll, tcnative-1.1.10.dll already contains the above three components, so just copy tcnative-1.1.10.dll to the bin of tomcat.

 After working for a long time, I still get an error! ! ! The final solution is: copy the tcnative-1.dll under Tomcat7\bin to the jdk\bin directory and replace it. (probably a version issue)

Summary: tcnative-1.dll does not need to be downloaded, at least for Tomcat7, we can find this dll in its bin directory.