tomcat8源码分析(一):导入eclipse

tomcat8源码分析(一):导入eclipse

下载tomcat8源码

下载ant：http://ant.apache.org/bindownload.cgi

在tomcat目录下执行

~/Downloads/apache-ant-1.9.7/bin/ant ide-eclipse

报错log如下:

downloadzip:
[get] Getting: https://objenesis.googlecode.com/files/objenesis-1.2-bin.zip [get] To: /Users/jikuan.zjk/tomcat-build-libs/download-1580874369.zip
[get] Error opening connection java.io.FileNotFoundException: https://objenesis.googlecode.com/files/objenesis-1.2-bin.zip [get] Error opening connection java.io.FileNotFoundException: https://objenesis.googlecode.com/files/objenesis-1.2-bin.zip [get] Error opening connection java.io.FileNotFoundException: https://objenesis.googlecode.com/files/objenesis-1.2-bin.zip [get] Can't get https://objenesis.googlecode.com/files/objenesis-1.2-bin.zip to /Users/jikuan.zjk/tomcat-build-libs/download-1580874369.zip
BUILD FAILED
/Users/jikuan.zjk/Documents/workspace/apache-tomcat-8.5.4-src/build.xml:2637: The following error occurred while executing this line:
/Users/jikuan.zjk/Documents/workspace/apache-tomcat-8.5.4-src/build.xml:2741: Can't get https://objenesis.googlecode.com/files/objenesis-1.2-bin.zip to /Users/jikuan.zjk/tomcat-build-libs/download-1580874369.zip

原因是Google下载不下来objenesis-1.2.jar包，网上搜一下下载一个就好了，默认的编译时的包放在了~/tomcat-build-libs/目录下

在此目录下新建一个objenesis-1.2/文件夹把下载的objenesis-1.2.jar放在此文件夹下重新执行

~/Downloads/apache-ant-1.9.7/bin/ant ide-eclipse

这时候就会转换成功了，转换成了eclipse工程，会发现tomcat源码文件下会出现.classpath 和.project文件

导入工程

file->import->Existing Project into workspace->选择工程后记得勾选copy project into workspace

这样会有错误，是没有导入jar包的问题

导入jar包:ant包和从ant build出的那些jar包:右击工程->build path->configer build path->Libararies->add external JARs

导入下面的几个包

ant.jar
easymock-3.2.jar
ecj-4.5.1.jar
geronimo-spec-1.1-rc4.jar
wsdl4j-1.6.2.jar

如果右击工程时没有build path 修改.project文件，有的话忽略

<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>apache-tomcat-8.5.4-src</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
</buildSpec>
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
</projectDescription>

主要是添加org.eclipse.jdt.core.javanature，要不然找不到build path，jar包也加不进来

启动

找到java/org.apache.catalina.startup/Bootstrap.java文件，右击->run as->run configurations->在java application里选择start-tomcat(自动生成的)

错误log如下:

九月 20, 2016 12:21:13 下午 org.apache.catalina.startup.CatalinaProperties loadProperties
警告: Failed to load catalina.properties
九月 20, 2016 12:21:13 下午 org.apache.catalina.startup.Catalina load
警告: Unable to load server configuration from [/Users/jikuan.zjk/Documents/workspace/tomcat-8.5.x/output/build/conf/server.xml]
九月 20, 2016 12:21:13 下午 org.apache.catalina.startup.Catalina load
警告: Unable to load server configuration from [/Users/jikuan.zjk/Documents/workspace/tomcat-8.5.x/output/build/conf/server.xml]
九月 20, 2016 12:21:13 下午 org.apache.catalina.startup.Catalina start
严重: Cannot start server. Server instance is not configured.

可见是在output文件加下找到build/conf/server.xml文件，output是ant编译时候编译出来的，在源码文件夹下是有个conf文件夹的，里面有server.xml

在output文件夹下创建build/conf/并把server.xml复制进去

重新启动，OK，启动成功

信息: Server startup in 176 ms

现在启动时没问题了，但是还不可以对外提供服务