tomcat源碼環境搭建

1.源碼下載

      進入tomcat 官網 如下圖

下載響應源碼，如下圖

2.環境搭建

     在idea中新建空項目

解壓剛剛下載的zip包至新建的項目中

在源碼包中新建pom.xml文件，並配置相關插件及依賴

pom.xml配置如下

<?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>apache-tomcat-8.5.42</artifactId>
  <version>8.5</version>
  <build>
    <finalName>Tomcat8.5</finalName>
    <sourceDirectory>java</sourceDirectory>
    <resources>
      <resource>
        <directory>java</directory>
      </resource>
    </resources>
    <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>

 

接着將tomcat源碼模塊引入至空項目中

然後配置啓動class(其中main class的類路徑爲org/apache/catalina/startup/Bootstrap.java)

在虛擬機參數中設置相關配置路徑,如果沒有移動相關目錄則配置如下

-Dcatalina.home=E:/IDEA-workspace/tomcat_project/apache-tomcat-8.5.42-src
-Dcatalina.base=E:/IDEA-workspace/tomcat_project/apache-tomcat-8.5.42-src
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
-Djava.util.logging.config.file=E:/IDEA-workspace/tomcat_project/apache-tomcat-8.5.42-src/conf/logging.properties

3.啓動測試

啓動application,並訪問localhost:8080

訪問報錯

這是因爲jsp解析器未被初始化，在org/apache/catalina/startup/ContextConfig#configureStart()中的webConfig();(770行)下面添加

context.addServletContainerInitializer(new JasperInitializer(),null);這時候重新啓動main方法，並訪問localhost:8080，展示正常頁面