轻松构建Tomcat源码

古城微笑少年丶 2023-02-12 04:28 70阅读 0赞

### 目录 ###

*  1.源码下载
 *  2.源码构建
 *   *  2.1配置
     *  2.2源码导入
     *  2.3启动源码
 *  运行

# 1.源码下载 #

下载链接：[https://tomcat.apache.org/download-80.cgi\#8.5.35][https_tomcat.apache.org_download-80.cgi_8.5.35]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1YW5fbHU_size_16_color_FFFFFF_t_70_pic_center]

# 2.源码构建 #

## 2.1配置 ##

*  **解压缩**： 首先idea编译器创建空项目tomcat\_original，然后将源代码压缩包解答到该项目当前目录中;  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1YW5fbHU_size_16_color_FFFFFF_t_70_pic_center 1]
 *  **配置**：

1.  进入解压缩文件目录下即D:\\JetBrains\\worksapce\\tomcat\_original，创建文件夹home，并将conf,wappers目录移到该文件夹中；  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1YW5fbHU_size_16_color_FFFFFF_t_70_pic_center 2]
2.  在tomcat源码目录下即D:\\JetBrains\\worksapce\\tomcat\_original\\apache-tomcat-8.5.55-src，创建 pom.xml文件，引入tomcat依赖；
3.  pom文件中具体内容如下：**注意改变artifactId标签的值**

<?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-8.5.55-src</artifactId>
        <name>Tomcat8.5</name>
        <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>

## 2.2源码导入 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1YW5fbHU_size_16_color_FFFFFF_t_70_pic_center 3]

## 2.3启动源码 ##

*  **主启动类**即main方法，路径：tomcat\_original\\apache-tomcat-8.5.55-src\\java\\org\\apache\\catalina\\startup\\Bootstrap.java  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1YW5fbHU_size_16_color_FFFFFF_t_70_pic_center 4]
 *  **配置启动类**：  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1YW5fbHU_size_16_color_FFFFFF_t_70_pic_center 5]
 *  **Vm options参数配置**

-Dcatalina.home=D:/JetBrains/worksapce/tomcat_original/apache-tomcat-8.5.55-src/home
    -Dcatalina.base=D:/JetBrains/worksapce/tomcat_original/apache-tomcat-8.5.55-src/home
    -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
    -Djava.util.logging.config.file=D:/JetBrains/worksapce/tomcat_original/apache-tomcat-8.5.55-src/home/conf/logging.properties

*  **启动过程中如果控制台日志存在乱码现象**，则VM options中加入以下配置：

-Duser.language=en -Duser.region=US -Dfile.encoding=UTF-8

*  配置org.apache.jasper.servlet.JasperInitializer：  
    在tomcat的源码org.apache.catalina.startup.ContextConfig中的configureStart函数中手动将JSP解析器初始化：  
    context.addServletContainerInitializer(new JasperInitializer(), null);

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();
            
            //初始化，引入下面一行代码
            context.addServletContainerInitializer(new JasperInitializer(), null);
    
            if (!context.getIgnoreAnnotations()) {
                applicationAnnotationsConfig();
            }
            if (ok) {
                validateSecurityRoles();
            }
            。。。。
            }

# 运行 #

将源码构建运行后，在浏览器输入http://localhost:8080，则成功进入tomcat的欢迎页面。

[https_tomcat.apache.org_download-80.cgi_8.5.35]: https://tomcat.apache.org/download-80.cgi#8.5.35
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