本次介绍如何在本地将tomcat导入idea中，并启动起来。
1. 打开idea直接导入tomcat
建议Fork，tomcat源码地址：传送门；tomcat git：
https://github.com/apache/tomcat.git
如下图：
需切换版本，可执行
git checkout 8.5.30，切换到该版本后，再创建并切换到自己的分支上git checkout -b 8.5.30_local
2. 在根目录添加home文件，与java同级，home目录添加lib、logs、work 文件
3. 将 java mark as Sources Root； test mark as Test Sources Root
右键
java» Mark Directory as » Sources Root ; 右键test» Mark Directory as » Test Sources Root
4. 根目录添加 pom.xml 文件
下载tomcat依赖的jar包
<?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.apache.tomcat</groupId>
<artifactId>Tomcat8.5.30</artifactId>
<name>Tomcat8.5.30</name>
<version>8.5.30</version>
<build>
<finalName>Tomcat8.5.30</finalName>
<sourceDirectory>java</sourceDirectory>
<testSourceDirectory>test</testSourceDirectory>
<resources>
<resource>
<directory>java</directory>
</resource>
</resources>
<testResources>
<testResource>
<directory>test</directory>
</testResource>
</testResources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3</version>
<configuration>
<encoding>UTF-8</encoding>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.easymock</groupId>
<artifactId>easymock</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>ant</groupId>
<artifactId>ant</artifactId>
<version>1.7.0</version>
</dependency>
<dependency>
<groupId>wsdl4j</groupId>
<artifactId>wsdl4j</artifactId>
<version>1.6.2</version>
</dependency>
<dependency>
<groupId>javax.xml</groupId>
<artifactId>jaxrpc</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.5.1</version>
</dependency>
</dependencies>
</project>
5. 将 conf 和 webapps 移到 home目录下，并删除 webapps 下的examples文件
6. org.apache.catalina.startup.ContextConfig.configureStart 添加JSP解析器
protected synchronized void configureStart() {
// Called from StandardContext.start()
if (log.isDebugEnabled()) {
log.debug(sm.getString("contextConfig.start"));
}
if (log.isDebugEnabled()) {
log.debug(sm.getString("contextConfig.xmlSettings",
context.getName(),
Boolean.valueOf(context.getXmlValidation()),
Boolean.valueOf(context.getXmlNamespaceAware())));
}
webConfig();
// 解析JSP
context.addServletContainerInitializer(new JasperInitializer(), null);
if (!context.getIgnoreAnnotations()) {
applicationAnnotationsConfig();
}
if (ok) {
validateSecurityRoles();
}
// Configure an authenticator if we need one
if (ok) {
authenticatorConfig();
}
// Dump the contents of this pipeline if requested
if (log.isDebugEnabled()) {
log.debug("Pipeline Configuration:");
Pipeline pipeline = context.getPipeline();
Valve valves[] = null;
if (pipeline != null) {
valves = pipeline.getValves();
}
if (valves != null) {
for (Valve valve : valves) {
log.debug(" " + valve.getClass().getName());
}
}
}
// Make our application available if no problems were encountered
if (ok) {
context.setConfigured(true);
} else {
log.error(sm.getString("contextConfig.unavailable"));
context.setConfigured(false);
}
}
7. 将test 下的 util.TestCookieFilter 代码注释掉
8. 添加启动程序，并编译
Main class: org.apache.catalina.startup.Bootstrap
VM options: -Dcatalina.home="/Users/xx/Documents/workspace/idea/tomcat/home" -Dfile.encoding=UTF-8
working dirtory: /Users/xx/Documents/workspace/idea/tomcat
9. 启动成功
浏览器中输入
http://localhost:8080/，进入tomcat首页，即启动成功
