Chapter-1 导入Tomcat 9
1. 下载源码
官网下载Tomcat9的源码
2. 导入IDEA
进入源码目录 移动文件夹webapps和conf文件夹到同一目录的catalina-home(手动创建)文件夹里,并在这个文件夹里再建
lib
logs
work
temp
四个文件.
├── lib
├── logs
├── temp
├── webapps
└── work
然后在根目录创建文件pom.xml(为了使用maven构建工具),内容如下
<?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>Tomcat9.0</artifactId>
<name>Tomcat9.0</name>
<version>9.0</version>
<build>
<finalName>Tomcat9.0</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>
接下来就是导入IDEA
3. 初始化&运行
导入成功后,配置运行方式
vm options 内容:
-Dcatalina.home=catalina-home -Dcatalina.base=catalina-home -Djava.endorsed.dirs=catalina-home/endorsed -Djava.io.tmpdir=catalina-home/temp -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=catalina-home/conf/logging.properties
然后运行
注意:编译时出错报错的代码,直接注释即可;
预计错误:
-
因为Tomcat代码会有个jdk判断,那里会有if-else判断,注释else内容即可
-
测试代码错误,只有一个文件里有,注释方法里的代码即可
-
运行后,访问localhost:8080为500错误,原因是我们直接启动org.apache.catalina.startup.Bootstrap的时候没有加载org.apache.jasper.servlet.JasperInitializer,从而无法编译JSP。解决办法是在tomcat的源码org.apache.catalina.startup.ContextConfig中手动将JSP解析器初始化:
context.addServletContainerInitializer(new JasperInitializer(), null);
参考博客:https://blog.csdn.net/yekong1225/article/details/81000446