2021-3-21-Tomcat内置启动
对于一些老旧项目，不易改成jar包运行，但又要求禁用tomcat外置启动。此时，需要写一个项目调用tomcat相关的jar包，实现tomcat的功能。
1）maven配置
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>webservice</artifactId>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<version>8.5.28</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jasper</artifactId>
<version>8.5.28</version>
</dependency>
</dependencies>
<build>
<finalName>webservice</finalName>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<versionRange>[2.0,)</versionRange>
<goals>
<goal>copy-dependencies</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
<!-- 主方法所在类名 -->
<mainClass>TomcatStart</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<!-- 将依赖包放到lib文件夹中 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>
${project.build.directory}/lib
</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>6</source>
<target>6</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
2）主类
import org.apache.catalina.LifecycleException;
import org.apache.catalina.core.AprLifecycleListener;
import org.apache.catalina.core.StandardContext;
import org.apache.catalina.startup.Tomcat;
import javax.servlet.ServletException;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Properties;
/**
*
* @author Programming is an art from.
* @Description: TODO
*/
public class TomcatStart {
public static int TOMCAT_PORT;
public static String TOMCAT_HOSTNAME = "127.0.0.1";
public static String DOCBASE;
public static String CONTEXT_PATH;
public static void main(String[] args) throws ServletException, LifecycleException, IOException {
//初始化
Properties properties = new Properties();
String configDir = System.getProperty("user.dir") + File.separator + "config.properties";
properties.load(new FileReader(configDir));
TomcatStart.TOMCAT_PORT = Integer.valueOf(properties.getProperty("server.port"));
String mode = properties.getProperty("server.docbase.mode");
if(mode.equals("relative")){
TomcatStart.DOCBASE = System.getProperty("user.dir") + File.separator + properties.getProperty("server.docbase");
}else {
TomcatStart.DOCBASE = properties.getProperty("server.docbase");
}
String contextPath = properties.getProperty("server.context.path");
TomcatStart.CONTEXT_PATH = contextPath;
//运行
TomcatStart.run();
}
public static void run() throws ServletException, LifecycleException {
Tomcat tomcat = new Tomcat();
tomcat.setPort(TomcatStart.TOMCAT_PORT);
tomcat.setHostname(TomcatStart.TOMCAT_HOSTNAME);
tomcat.setBaseDir("."); // tomcat 信息保存在项目下
StandardContext myCtx = (StandardContext) tomcat
.addWebapp(TomcatStart.CONTEXT_PATH,DOCBASE);
myCtx.setReloadable(false);
// 上下文监听器
myCtx.addLifecycleListener(new AprLifecycleListener());
tomcat.start();
tomcat.getServer().await();
}
}
3）配置文件
server.port=13000
server.context.path=/sso
# 路径模式：relative(相对) absolute(绝对)
server.docbase.mode=relative
server.docbase=/
4）启动
将jar包导出放置到老项目中，找到TomcatStart的字节码文件的目录，通过-classpath加载到虚拟机运行，可通过脚本完成
(1)启动
#!/bin/bash
APP_NAME=com.koal.sso.client.TomcatStart
CURRENT_PATH=$(readlink -f "$(dirname "$0")")
JAVA_CMD="${JAVA_HOME}/bin/java"
JAVA_OPT="-Xms256m -Xmx256m -Xss128m "
JAVA_MAJOR_VERSION=$($JAVA -version 2>&1 | sed -E -n 's/.* version "([0-9]*).*$/\1/p')
if [[ "$JAVA_MAJOR_VERSION" -ge "9" ]] ; then
JAVA_OPT="${JAVA_OPT} --add-modules java.sql --illegal-access=warn"
JAVA_OPT="${JAVA_OPT} -cp .:${KIAM_PROD_HOME}/classes"
JAVA_OPT="${JAVA_OPT} -Xlog:gc*:file=${KIAM_PROD_LOG_DIR}/urm_gc.log:time,tags:filecount=10,filesize=102400"
else
JAVA_OPT="${JAVA_OPT} -Djava.ext.dirs=${JAVA_HOME}/jre/lib/ext:${JAVA_HOME}/lib/ext:"
JAVA_OPT="${JAVA_OPT} -Xloggc:${KIAM_PROD_LOG_DIR}/urm_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M"
fi
# 检查JAVAHOME是否存在
env_check() {
if [ -z $JAVA_HOME ]; then
echo "ERR: Please set the JAVA_HOME variable in your environment."
exit 1
fi
}
# 检查程序是否在运行
is_exist(){
pid=`ps -ef|grep $APP_NAME|grep -v grep|awk '{print $2}'`
echo $pid
#如果不存在返回1，存在返回0
if [ -z "${pid}" ]; then
return 1
else
return 0
fi
}
env_check
is_exist
if [ $? -eq 0 ];then
echo "不可以重复运行"
exit
fi
JAVA_OPT=${JAVA_OPT}
JAVA_OPT="${JAVA_OPT} -cp "
JAVA_OPT="${JAVA_OPT}${CURRENT_PATH}/WEB-INF/classes:"
JAVA_OPT="${JAVA_OPT}${CURRENT_PATH}/WEB-INF/lib/*:"
JAVA_OPT="${JAVA_OPT}${CURRENT_PATH}/lib/* "
JAVA_OPT="${JAVA_OPT}com.koal.sso.client.TomcatStart"
echo $JAVA_OPT
echo "运行命令" ${JAVA_CMD}
echo "执行jar参数为" ${JAVA_OPT}
echo "运行类名为" ${APP_NAME}
nohup $JAVA_CMD $JAVA_OPT &
echo "启动结束"
(2)停止
#!/bin/bash
APP_NAME=com.koal.sso.client.TomcatStart
# 检查JAVAHOME是否存在
is_exist(){
pid=`ps -ef|grep $APP_NAME|grep -v grep|awk '{print $2}'`
#如果不存在返回1，存在返回0
if [ -z "${pid}" ]; then
return 1
else
return 0
fi
}
# 获取程序pid
pid=`ps -ef|grep $APP_NAME|grep -v grep|awk '{print $2}'`
is_exist
if [ $? -eq 1 ];then
echo "程序未在运行"
exit
fi
kill -9 $pid
echo "已停止${pid}"
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