在java.library.path中找不到基于APR的Apache Tomcat本机库？

Question

[当尝试在Tomcat上使用Eclipse / Linux运行我的应用程序时我收到以下信息消息：

INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/server:/usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64:/usr/lib/jvm/java-6-sun-1.6.0.20/jre/../lib/amd64:/usr/lib64/xulrunner-addons:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

我该如何解决此问题？

Answer 1

您可以阅读Apache Native Docs。

我在Windows平台上有同样的情况，比Unix / Linux容易一些。

此Stackoverflow问题也帮助了我。

Answer 2

我的案子：看到相同的INFO消息。

Centos 6.2 x86_64Tomcat 6.0.24

这为我解决了问题：

yum install tomcat-native

轰！

Answer 3

对于Ubntu用户

 1. Install compilers
    #sudo apt-get install make
    #sudo apt-get install gcc

    2. Install openssl and development libraries
    #sudo apt-get install openssl
    #sudo apt-get install libssl-dev
    3. Install the APR package (Downloaded from http://apr.apache.org/)

    #tar -xzf apr-1.4.6.tar.gz
    #cd apr-1.4.6/
    #sudo ./configure
    #sudo make
    #sudo make install

    You should see the compiled file as
    /usr/local/apr/lib/libapr-1.a

    4. Download, compile and install Tomcat Native sourse package
    tomcat-native-1.1.27-src.tar.gz

    Extract the archive into some folder

    #tar -xzf tomcat-native-1.1.27-src.tar.gz
    #cd tomcat-native-1.1.27-src/jni/native
    #JAVA_HOME=/usr/lib/jvm/jdk1.7.0_21/
    #sudo ./configure --with-apr=/usr/local/apr --with-java-home=$JAVA_HOME
    #sudo make
    #sudo make install

    Now I have compiled Tomcat Native library in /usr/local/apr/libtcnative-1.so.0.1.27 and symbolic link file /usr/local/apr/@libtcnative-1.so pointed to the library

    5. Create or edit the $CATALINA_HOME/bin/setenv.sh file with following lines :
    export LD_LIBRARY_PATH='$LD_LIBRARY_PATH:/usr/local/apr/lib'

    6. Restart tomcat and see the desired result:

Answer 4

我通过删除旧服务器并重新创建来解决此问题（在Eclipse IDE上）。此错误是因为您没有正确终止Tomcat服务器并关闭Eclipse。

Answer 5

Download为您的操作系统使用适当的基于APR的tomcat本机库，以便Apache tomcat服务器可以利用OS的功能，该功能默认情况下不包含在tomcat中。对于Windows，它将是.dll文件。

启动服务器时，我也收到警告，如果您正在测试或开发，则不必担心。这是出于生产目的。将tcnative-1.dll文件放入Apache Tomcat 7的bin文件夹后，以下是stderr文件中的输出，

Apr 07, 2015 1:14:12 PM org.apache.catalina.core.AprLifecycleListener init
INFO: Loaded APR based Apache Tomcat Native library 1.1.33 using APR version 1.5.1.
Apr 07, 2015 1:14:12 PM org.apache.catalina.core.AprLifecycleListener init
INFO: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
Apr 07, 2015 1:14:14 PM org.apache.catalina.core.AprLifecycleListener initializeSSL
INFO: OpenSSL successfully initialized (OpenSSL 1.0.1m 19 Mar 2015)
Apr 07, 2015 1:14:14 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-apr-127.0.0.1"]