SpringMVC项目部署到CentOS7虚拟机问题及解决办法记录

1.前言

计划将之前在Windows系统上练手做的项目部署到云服务器上，想先在本地虚拟机上测试一下是否可行，过程中发现很多问题，特此记录。还有问题未能解决，希望后面能有思路。

突然想到是否和数据库有关，可以在同一台虚拟机上安装mysql和应用，测试看看，是DB问题还是应用本身问题

感觉这个项目本身应该没有考虑上线到Linux服务器，加之我之前在做这个项目的时候对其加了修改，主要是对图片文件的地址进行了修改，因此可能有错误。先记录下来

环境：

Linux版本：CentOS Linux release 7.9.2009
apache-tomcat-9.0.41
openjdk version "1.8.0_292"

2.问题

2.1 缺少 tomcat-native

启动Tomcat之后，在浏览器输入IP后显示503，查看catalina.log发现报错：

就是说缺少Tomcat Native librayr的支持，具体原因可以参考因此需要安装 Tomcat Native library。

安装参考 Tomcat-APR/tomcat-native-1.2.23-src源码安装和配置和 The Apache Tomcat Native library which allows using OpenSSL was not found on the java.library.path

二者都是参考官网来安装 tomcat-native库：

安装tomcat-native 步骤

确认gcc、apr、apr-devel、apr-util 以及 JDK是否已经安装过，没有就需要安装

# 1.确认 gcc, 若已安装就会显示安装的版本

rpm -qa gcc

# gcc-4.8.5-28.el7_5.1.x86_64

#没有就安装

yum install gcc

# 2.确认 apr, 没有就 yum install gcc

rpm -qa apr

# 3.确认 apr-devel，没有就 yum install apr-devel

rpm -qa apr-devel

# 4.确认 apr-util， 没有就 yum install apr-util

rpm -qa apr-util

# 5. 确认 JDK，没有就 yum install -y java-1.8.0-openjdk

which java

java -version

源码安装tomcat-native-1.2.23

下载地址：官网

下载到 /opt 目录下，tar zxvf tomcat-native-1.2.23-src.tar.gz 解压，进入 tomcat-native-1.2.23-src/native ，然后参考官方给的模板执行：

./configure --with-apr=/usr/bin/apr-1-config \

            --with-java-home=/home/jfclere/JAVA/jdk1.7.0_80/ \

            --with-ssl=yes \

            --prefix=$CATALINA_HOME

--with-java-home：jdk的安装目录，笔者是 yum install -y java-1.8.0-openjdk 安装的，因此是 /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.292.b10-1.el7_9.x86_64 ；
--prefix：Tomcat安装目录

## 笔者的命令

./configure --with-apr=/usr/bin/apr-1-config \

            --with-java-home=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.292.b10-1.el7_9.x86_64 \

            --with-ssl=yes \

            --prefix=/usr/local/apache-tomcat-9.0.41

然后编译安装 make && make install 成功后会看到如下的内容：

Libraries have been installed in:

   /usr/local/apache-tomcat-9.0.41/lib

If you ever happen to want to link against installed libraries

in a given directory, LIBDIR, you must either use libtool, and

specify the full pathname of the library, or use the `-LLIBDIR'

flag during linking and do at least one of the following:

   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable

     during execution

   - add LIBDIR to the `LD_RUN_PATH' environment variable

     during linking

   - use the `-Wl,-rpath -Wl,LIBDIR' linker flag

   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

即库已经安装到之前 --prefix指定目录下的 lib子目录中，同时还需要以下操作：

修改 /usr/local/apache-tomcat-9.0.41/bin/catalina.sh ，在文件末尾添加

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/apache-tomcat-9.0.41/lib

export LD_LIBRARY_PATH

再在 /usr/local/apache-tomcat-9.0.41/conf/server.xml 配置 Tomcat Connector，将 protocol修改成如下内容：

<Connector port="80" protocol="org.apache.coyote.http11.Http11NioProtocol"

               connectionTimeout="20000"

               redirectPort="8443" />

重启Tomcat服务器问题就解决了

2.2 无法访问自己的应用

发现自己的应用无法访问，能访问 192.168.48.101，默认是Tomcat介绍页面，但是自己的应用 192.168.48.101:80/imooc_reader 就无法访问，报错为 500-内容服务器错误

javax.servlet.ServletException: Servlet.init() for servlet [springmvc] threw exception

	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)

	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)

	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)

	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)

	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)

	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)

	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)

	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)

	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	java.lang.Thread.run(Thread.java:748)

根本原因。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'bookController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'categoryMapper' defined in file [/usr/local/apache-tomcat-9.0.41/webapps/imooc_reader/WEB-INF/classes/com/imooc/reader/mapper/CategoryMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in file [/usr/local/apache-tomcat-9.0.41/webapps/imooc_reader/WEB-INF/classes/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: org.apache.ibatis.session.Configuration.setShrinkWhitespacesInSql(Z)V

	org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:321)

	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422)

	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)

	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)

	org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)

	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)

	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)

	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)

	org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:895)

	org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)

	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)

	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)

	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668)

	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716)

	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591)

	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)

	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)

	javax.servlet.GenericServlet.init(GenericServlet.java:158)

	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)

	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)

	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)

	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)

	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)

	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)

	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)

	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)

	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

	java.lang.Thread.run(Thread.java:748)

上面的错误是说：问题可能在与数据库连接的配置或者没有得到结果导致依赖注入失败，可以从 Error creating bean with name 'sessionFactory' defined in file defined in [applicationContext.xml]中猜测

个人怀疑原因：

这个教学项目在编写的时候可能就没有考虑到上线Linux服务器，因此在Windows环境下开发没有考虑到两个系统的差别，比如文件分隔符等；
自己在编写的时候将在线图片资源全部修改为本地，可能导致读写有问题；

以后有时间再研究一下。