tomcat源码解析（1)

最近在学习java，在学习至jsp部分时用到了tomcat，一了解发现这个tomcat原来也是用java写的，且是开源的，这我就happy了，趁着空闲把源码下载了下来，学习，以下3编是我从别人那里复制过来的，算是做一个初步了解,至于我的一些看法和认识将在以后记载

原文地址 http://blog.csdn.net/chenxiaohua/article/details/2624997 在此谢谢博主的解惑^_^

tomcat启动命令

安装tomcat之后,设置CATALINA_HOME=tomcat的安装目录,比如安装在c:/tomcat，那么CATALINA_HOME=c:/tomcat，添加路径到path环境变量，%CATALINA_HOME%/bin，然后打开控制台，进入tomcat的bin目录，这儿有tomcat的启动脚本，startup.bat启动tomcat，shutdown.bat关闭tomcat。我是在windows下做的调试，如果在linux/unix下，相应的启动脚本为startup.sh和shutdown.sh。

tomcat启动脚本解说

用文本编辑器打开startup.bat,你会看到如下，内容：

 1 @echo off
 2 
 3 if "%OS%" == "Windows_NT" setlocal
 4 
 5 rem ---------------------------------------------------------------------------
 6 
 7 rem Start script for the CATALINA Server
 8 
 9 rem
10 
11 rem $Id: startup.bat,v 1.6 2004/05/27 18:25:11 yoavs Exp $
12 
13 rem ---------------------------------------------------------------------------
14 
15 
16 
17 rem Guess CATALINA_HOME if not defined
18 
19 set CURRENT_DIR=%cd%
20 
21 if not "%CATALINA_HOME%" == "" goto gotHome
22 
23 set CATALINA_HOME=%CURRENT_DIR%
24 
25 if exist "%CATALINA_HOME%/bin/catalina.bat" goto okHome
26 
27 cd ..
28 
29 set CATALINA_HOME=%cd%
30 
31 cd %CURRENT_DIR%
32 
33 :gotHome
34 
35 if exist "%CATALINA_HOME%/bin/catalina.bat" goto okHome
36 
37 echo The CATALINA_HOME environment variable is not defined correctly
38 
39 echo This environment variable is needed to run this program
40 
41 goto end
42 
43 :okHome
44 
45 
46 
47 set EXECUTABLE=%CATALINA_HOME%/bin/catalina.bat
48 
49 
50 
51 rem Check that target executable exists
52 
53 if exist "%EXECUTABLE%" goto okExec
54 
55 echo Cannot find %EXECUTABLE%
56 
57 echo This file is needed to run this program
58 
59 goto end
60 
61 :okExec
62 
63 
64 
65 rem Get remaining unshifted command line arguments and save them in the
66 
67 set CMD_LINE_ARGS=
68 
69 :setArgs
70 
71 if ""%1""=="""" goto doneSetArgs
72 
73 set CMD_LINE_ARGS=%CMD_LINE_ARGS% %1
74 
75 shift
76 
77 goto setArgs
78 
79 :doneSetArgs
80 
81 
82 
83 call "%EXECUTABLE%" start %CMD_LINE_ARGS%
84 
85 
86 
87 :end

View Code

第一段,内容如下，先设置好变量CATALINA_HOME，然后判断是否存在脚本文件"%CATALINA_HOME%/bin/catalina.bat",如果找不到该文件，那么退出脚本的执行，提示设置CATALINA_HOME环境变量，这就是我们在安装tomcat后，要设置环境变量CATALINA_HOME的原因

 1 @echo off
 2 
 3 if "%OS%" == "Windows_NT" setlocal
 4 
 5 rem ---------------------------------------------------------------------------
 6 
 7 rem Start script for the CATALINA Server
 8 
 9 rem
10 
11 rem $Id: startup.bat,v 1.6 2004/05/27 18:25:11 yoavs Exp $
12 
13 rem ---------------------------------------------------------------------------
14 
15 
16 
17 rem Guess CATALINA_HOME if not defined
18 
19 set CURRENT_DIR=%cd%
20 
21 if not "%CATALINA_HOME%" == "" goto gotHome
22 
23 set CATALINA_HOME=%CURRENT_DIR%
24 
25 if exist "%CATALINA_HOME%/bin/catalina.bat" goto okHome
26 
27 cd ..
28 
29 set CATALINA_HOME=%cd%
30 
31 cd %CURRENT_DIR%
32 
33 :gotHome
34 
35 if exist "%CATALINA_HOME%/bin/catalina.bat" goto okHome
36 
37 echo The CATALINA_HOME environment variable is not defined correctly
38 
39 echo This environment variable is needed to run this program
40 
41 goto end
42 
43 :okHome
44 
45 
46 
47 set EXECUTABLE=%CATALINA_HOME%/bin/catalina.bat

View Code

第二段，内容如下，用EXECUTABLE脚本指向的脚本文件，执行启动命令，传入参数start，既进入启动脚本catalina.bat的执行。

 1 rem Check that target executable exists
 2 
 3 if exist "%EXECUTABLE%" goto okExec
 4 
 5 echo Cannot find %EXECUTABLE%
 6 
 7 echo This file is needed to run this program
 8 
 9 goto end
10 
11 :okExec
12 
13 
14 
15 rem Get remaining unshifted command line arguments and save them in the
16 
17 set CMD_LINE_ARGS=
18 
19 :setArgs
20 
21 if ""%1""=="""" goto doneSetArgs
22 
23 set CMD_LINE_ARGS=%CMD_LINE_ARGS% %1
24 
25 shift
26 
27 goto setArgs
28 
29 :doneSetArgs
30 
31 
32 
33 call "%EXECUTABLE%" start %CMD_LINE_ARGS%
34 
35 
36 
37 :end

View Code

catalina.bat内容如下：

  1 @echo off
  2 
  3 if "%OS%" == "Windows_NT" setlocal
  4 
  5 rem ---------------------------------------------------------------------------
  6 
  7 rem Start/Stop Script for the CATALINA Server
  8 
  9 rem
 10 
 11 rem Environment Variable Prequisites
 12 
 13 rem
 14 
 15 rem   CATALINA_HOME   May point at your Catalina "build" directory.
 16 
 17 rem
 18 
 19 rem   CATALINA_BASE   (Optional) Base directory for resolving dynamic portions
 20 
 21 rem                   of a Catalina installation.  If not present, resolves to
 22 
 23 rem                   the same directory that CATALINA_HOME points to.
 24 
 25 rem
 26 
 27 rem   CATALINA_OPTS   (Optional) Java runtime options used when the "start",
 28 
 29 rem                   "stop", or "run" command is executed.
 30 
 31 rem
 32 
 33 rem   CATALINA_TMPDIR (Optional) Directory path location of temporary directory
 34 
 35 rem                   the JVM should use (java.io.tmpdir).  Defaults to
 36 
 37 rem                   %CATALINA_BASE%/temp.
 38 
 39 rem
 40 
 41 rem   JAVA_HOME       Must point at your Java Development Kit installation.
 42 
 43 rem
 44 
 45 rem   JAVA_OPTS       (Optional) Java runtime options used when the "start",
 46 
 47 rem                   "stop", or "run" command is executed.
 48 
 49 rem
 50 
 51 rem   JSSE_HOME       (Optional) May point at your Java Secure Sockets Extension
 52 
 53 rem                   (JSSE) installation, whose JAR files will be added to the
 54 
 55 rem                   system class path used to start Tomcat.
 56 
 57 rem
 58 
 59 rem   JPDA_TRANSPORT  (Optional) JPDA transport used when the "jpda start"
 60 
 61 rem                   command is executed. The default is "dt_shmem".
 62 
 63 rem
 64 
 65 rem   JPDA_ADDRESS    (Optional) Java runtime options used when the "jpda start"
 66 
 67 rem                   command is executed. The default is "jdbconn".
 68 
 69 rem
 70 
 71 rem $Id: catalina.bat,v 1.9.2.2 2004/09/23 20:17:14 yoavs Exp $
 72 
 73 rem ---------------------------------------------------------------------------
 74 
 75 
 76 
 77 rem Guess CATALINA_HOME if not defined
 78 
 79 set CURRENT_DIR=%cd%
 80 
 81 if not "%CATALINA_HOME%" == "" goto gotHome
 82 
 83 set CATALINA_HOME=%CURRENT_DIR%
 84 
 85 if exist "%CATALINA_HOME%/bin/catalina.bat" goto okHome
 86 
 87 cd ..
 88 
 89 set CATALINA_HOME=%cd%
 90 
 91 cd %CURRENT_DIR%
 92 
 93 :gotHome
 94 
 95 if exist "%CATALINA_HOME%/bin/catalina.bat" goto okHome
 96 
 97 echo The CATALINA_HOME environment variable is not defined correctly
 98 
 99 echo This environment variable is needed to run this program
100 
101 goto end
102 
103 :okHome
104 
105 
106 
107 rem Get standard environment variables
108 
109 if exist "%CATALINA_HOME%/bin/setenv.bat" call "%CATALINA_HOME%/bin/setenv.bat"
110 
111 
112 
113 rem Get standard Java environment variables
114 
115 if exist "%CATALINA_HOME%/bin/setclasspath.bat" goto okSetclasspath
116 
117 echo Cannot find %CATALINA_HOME%/bin/setclasspath.bat
118 
119 echo This file is needed to run this program
120 
121 goto end
122 
123 :okSetclasspath
124 
125 set BASEDIR=%CATALINA_HOME%
126 
127 call "%CATALINA_HOME%/bin/setclasspath.bat"
128 
129 
130 
131 rem Add on extra jar files to CLASSPATH
132 
133 if "%JSSE_HOME%" == "" goto noJsse
134 
135 set CLASSPATH=%CLASSPATH%;%JSSE_HOME%/lib/jcert.jar;%JSSE_HOME%/lib/jnet.jar;%JSSE_HOME%/lib/jsse.jar
136 
137 :noJsse
138 
139 set CLASSPATH=%CLASSPATH%;%CATALINA_HOME%/bin/bootstrap.jar
140 
141 
142 
143 if not "%CATALINA_BASE%" == "" goto gotBase
144 
145 set CATALINA_BASE=%CATALINA_HOME%
146 
147 :gotBase
148 
149 
150 
151 if not "%CATALINA_TMPDIR%" == "" goto gotTmpdir
152 
153 set CATALINA_TMPDIR=%CATALINA_BASE%/temp
154 
155 :gotTmpdir
156 
157 
158 
159 rem ----- Execute The Requested Command ---------------------------------------
160 
161 
162 
163 echo Using CATALINA_BASE:   %CATALINA_BASE%
164 
165 echo Using CATALINA_HOME:   %CATALINA_HOME%
166 
167 echo Using CATALINA_TMPDIR: %CATALINA_TMPDIR%
168 
169 echo Using JAVA_HOME:       %JAVA_HOME%
170 
171 
172 
173 set _EXECJAVA=%_RUNJAVA%
174 
175 set MAINCLASS=org.apache.catalina.startup.Bootstrap
176 
177 set ACTION=start
178 
179 set SECURITY_POLICY_FILE=
180 
181 set DEBUG_OPTS=
182 
183 set JPDA=
184 
185 
186 
187 if not ""%1"" == ""jpda"" goto noJpda
188 
189 set JPDA=jpda
190 
191 if not "%JPDA_TRANSPORT%" == "" goto gotJpdaTransport
192 
193 set JPDA_TRANSPORT=dt_shmem
194 
195 :gotJpdaTransport
196 
197 if not "%JPDA_ADDRESS%" == "" goto gotJpdaAddress
198 
199 set JPDA_ADDRESS=jdbconn
200 
201 :gotJpdaAddress
202 
203 shift
204 
205 :noJpda
206 
207 
208 
209 if ""%1"" == ""debug"" goto doDebug
210 
211 if ""%1"" == ""run"" goto doRun
212 
213 if ""%1"" == ""start"" goto doStart
214 
215 if ""%1"" == ""stop"" goto doStop
216 
217 if ""%1"" == ""version"" goto doVersion
218 
219 
220 
221 echo Usage:  catalina ( commands ... )
222 
223 echo commands:
224 
225 echo   debug             Start Catalina in a debugger
226 
227 echo   debug -security   Debug Catalina with a security manager
228 
229 echo   jpda start        Start Catalina under JPDA debugger
230 
231 echo   run               Start Catalina in the current window
232 
233 echo   run -security     Start in the current window with security manager
234 
235 echo   start             Start Catalina in a separate window
236 
237 echo   start -security   Start in a separate window with security manager
238 
239 echo   stop              Stop Catalina
240 
241 echo   version           What version of tomcat are you running?
242 
243 goto end
244 
245 
246 
247 :doDebug
248 
249 shift
250 
251 set _EXECJAVA=%_RUNJDB%
252 
253 set DEBUG_OPTS=-sourcepath "%CATALINA_HOME%/../../jakarta-tomcat-catalina/catalina/src/share"
254 
255 if not ""%1"" == ""-security"" goto execCmd
256 
257 shift
258 
259 echo Using Security Manager
260 
261 set SECURITY_POLICY_FILE=%CATALINA_BASE%/conf/catalina.policy
262 
263 goto execCmd
264 
265 
266 
267 :doRun
268 
269 shift
270 
271 if not ""%1"" == ""-security"" goto execCmd
272 
273 shift
274 
275 echo Using Security Manager
276 
277 set SECURITY_POLICY_FILE=%CATALINA_BASE%/conf/catalina.policy
278 
279 goto execCmd
280 
281 
282 
283 :doStart
284 
285 shift
286 
287 if not "%OS%" == "Windows_NT" goto noTitle
288 
289 set _EXECJAVA=start "Tomcat" %_RUNJAVA%
290 
291 goto gotTitle
292 
293 :noTitle
294 
295 set _EXECJAVA=start %_RUNJAVA%
296 
297 :gotTitle
298 
299 if not ""%1"" == ""-security"" goto execCmd
300 
301 shift
302 
303 echo Using Security Manager
304 
305 set SECURITY_POLICY_FILE=%CATALINA_BASE%/conf/catalina.policy
306 
307 goto execCmd
308 
309 
310 
311 :doStop
312 
313 shift
314 
315 set ACTION=stop
316 
317 goto execCmd
318 
319 
320 
321 :doVersion
322 
323 %_EXECJAVA% -classpath "%CATALINA_HOME%/server/lib/catalina.jar" org.apache.catalina.util.ServerInfo
324 
325 goto end
326 
327 
328 
329 
330 
331 :execCmd
332 
333 rem Get remaining unshifted command line arguments and save them in the
334 
335 set CMD_LINE_ARGS=
336 
337 :setArgs
338 
339 if ""%1""=="""" goto doneSetArgs
340 
341 set CMD_LINE_ARGS=%CMD_LINE_ARGS% %1
342 
343 shift
344 
345 goto setArgs
346 
347 :doneSetArgs
348 
349 
350 
351 rem Execute Java with the applicable properties
352 
353 if not "%JPDA%" == "" goto doJpda
354 
355 if not "%SECURITY_POLICY_FILE%" == "" goto doSecurity
356 
357 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%
358 
359 goto end
360 
361 :doSecurity
362 
363 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%
364 
365 goto end
366 
367 :doJpda
368 
369 if not "%SECURITY_POLICY_FILE%" == "" goto doSecurityJpda
370 
371 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% -Xdebug -Xrunjdwp:transport=%JPDA_TRANSPORT%,address=%JPDA_ADDRESS%,server=y,suspend=n %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%
372 
373 goto end
374 
375 :doSecurityJpda
376 
377 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% -Xdebug -Xrunjdwp:transport=%JPDA_TRANSPORT%,address=%JPDA_ADDRESS%,server=y,suspend=n %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%
378 
379 goto end
380 
381 
382 
383 :end

View Code

解释，1。再次验证catalina.bat；2。调用setclasspath.bat设置java虚拟机相关的环境变量，所以在运行tomcat的前，一定要先安装jdk，并设置好JAVA_HOME环境变量；3。设置启动程序，添加CLASSPATH，bootstrap.jar，和启动类org.apache.catalina.startup.Bootstrap；4。最后执行虚拟机，运行tomcat。

运行tomcat的参数行为%_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION%，在我的电脑上调试，将所有的变量内容转译出来，执行的命令即为：start "Tomcat" "C:/j2sdk1.4.2_15/bin/java" -Djava.endorsed.dirs="C:/Tomcat 5.0/common/endorsed" -classpath "C:/j2sdk1.4.2_15/lib/tools.jar;C:/Tomcat 5.0/bin/bootstrap.jar" -Dcatalina.base="C:/Tomcat 5.0" -Dcatalina.home="C:/Tomcat 5.0" -Djava.io.tmpdir="C:/Tomcat 5.0/temp" org.apache.catalina.startup.Bootstrap start

在该命令中，start "Tomcat"是在控制态打开一个新的窗口，然后运行java虚拟机C:/j2sdk1.4.2_15/bin/java,现在大家应该明白了，tomcat是从bootstrap.jar中的org.apache.catalina.startup.Bootstrap类的main函数开始启动运行，并且传入了start参数。-D开始的都是虚拟机的运行参数。

用winrar打开bootstrap.jar打开，在META-INF目录下打开MANIFEST.MF，你会看到如下内容： Manifest-Version: 1.0 Ant-Version: Apache Ant 1.6.1 Created-By: 1.4.2-b28 (Sun Microsystems Inc.) Main-Class: org.apache.catalina.startup.Bootstrap Specification-Title: Catalina Specification-Version: 1.0 Class-Path: jmx.jar commons-daemon.jar commons-logging-api.jar 指定了该jar包从那个类开始运行，依赖那些jar包。

结论

通过对脚本的研究，我们应该知道，tomcat从那儿开始运行，只有有了运行的线索，那么我们就可以从头开始调试tomcat源代码。调试tomcat源代码的准备工作，从www.apache.org上下载相应版本，带源代码的安装程序，并安装。

1。准备工作

下载tomcat,我下载的是tomcat5.0.30,我认为这是一个比较好的版本。下载地址http://archive.apache.org/dist/tomcat/tomcat-5/v5.0.30/bin/，选择window下载安装文件。

安装的时候，选择安装源代码选项，如下图。我的tomcat安装目录是C:/Tomcat 5.0

安装myeclipse，我安装的是5.5版。

2。创建工程

tomcat的整个安装目录拷贝到myeclipse的workspace目录下，如下图：

然后创建一个名为Tomcat 5.0的java project，如下步骤。

第一步，选择创建project，如下图:

第二步，选择java project:

第三步，选择和tomcat拷贝目录同名的project,如下图，选择“Finish”按钮。

这时候，你已经创建了tomcat的调试环境。

你可能会看到一些红色编译错误，你还需要下载mail.jar，activation.jar两个库文件，添加到工程中。

工程中估计还有一些编译错误，大家可以自己修改代码来解决，应该很简单。

3。开始调试

打开文件Bootstrap.java，所在的包为package org.apache.catalina.startup，如下图：

这就是tomcat的启动文件（大家可以通过文件搜索来找到该文件所在路径），找到main方法，tomcat就从这个main方法的地方开始运行启动，你现在可以设置断点，开始运行。

由于时间的原因，我都写的比较检阅，如果对myeclipse和tomcat有一定了解的朋友，肯定能很快建立环境。

有了上面的准备工作，我们开始源代码调试。

main函数说明

开打Bootstrap.java，找到main函数，函数源代码如下：

[java] view plain copy print ?

public static void main(String args[]) {
try {
// Attempt to load JMX class
new ObjectName("test:foo=bar");
} catch (Throwable t) {
System.out.println(JMX_ERROR_MESSAGE);
try {
// Give users some time to read the message before exiting
Thread.sleep(5000);
} catch (Exception ex) {
}
return;
}
if (daemon == null) {
daemon = new Bootstrap();
try {
daemon.init();
} catch (Throwable t) {
t.printStackTrace();
return;
}
}
try {
String command = "start";
if (args.length > 0) {
command = args[args.length - 1];
}
if (command.equals("startd")) {
args[0] = "start";
daemon.load(args);
daemon.start();
} else if (command.equals("stopd")) {
args[0] = "stop";
daemon.stop();
} else if (command.equals("start")) {
daemon.setAwait(true);
daemon.load(args);
daemon.start();
} else if (command.equals("stop")) {
daemon.stopServer(args);
}
} catch (Throwable t) {
t.printStackTrace();
}
}

public static void main(String args[]) {



    try {

        // Attempt to load JMX class

        new ObjectName("test:foo=bar");

    } catch (Throwable t) {

        System.out.println(JMX_ERROR_MESSAGE);

        try {

            // Give users some time to read the message before exiting

            Thread.sleep(5000);

        } catch (Exception ex) {

        }

        return;

    }



    if (daemon == null) {

        daemon = new Bootstrap();

        try {

            daemon.init();

        } catch (Throwable t) {

            t.printStackTrace();

            return;

        }

    }



    try {

        String command = "start";

        if (args.length > 0) {

            command = args[args.length - 1];

        }



        if (command.equals("startd")) {

            args[0] = "start";

            daemon.load(args);

            daemon.start();

        } else if (command.equals("stopd")) {

            args[0] = "stop";

            daemon.stop();

        } else if (command.equals("start")) {

            daemon.setAwait(true);

            daemon.load(args);

            daemon.start();

        } else if (command.equals("stop")) {

            daemon.stopServer(args);

        }

    } catch (Throwable t) {

        t.printStackTrace();

    }

}

上面的代码一共分成三部分：第一部分：

[java] view plain copy print ?

try {
// Attempt to load JMX class
new ObjectName("test:foo=bar");
} catch (Throwable t) {
System.out.println(JMX_ERROR_MESSAGE);
try {
// Give users some time to read the message before exiting
Thread.sleep(5000);
} catch (Exception ex) {
}
return;
}

try {

    // Attempt to load JMX class

    new ObjectName("test:foo=bar");

} catch (Throwable t) {

    System.out.println(JMX_ERROR_MESSAGE);

    try {

        // Give users some time to read the message before exiting

        Thread.sleep(5000);

    } catch (Exception ex) {

    }

    return;

}

验证jdk基础类是否载入，没有载入，在标准输入打印错误信息，然后退出程序运行。

第二部分：

[java] view plain copy print ?

if (daemon == null) {
daemon = new Bootstrap();
try {
daemon.init();
} catch (Throwable t) {
t.printStackTrace();
return;
}
}

if (daemon == null) {

    daemon = new Bootstrap();

    try {

        daemon.init();

    } catch (Throwable t) {

        t.printStackTrace();

        return;

    }

}

初始化运行环境，载入需要的jar包，读取conf/server.xml，生成相应的运行对象：

第三部分：

[java] view plain copy print ?

try {
String command = "start";
if (args.length > 0) {
command = args[args.length - 1];
}
if (command.equals("startd")) {
args[0] = "start";
daemon.load(args);
daemon.start();
} else if (command.equals("stopd")) {
args[0] = "stop";
daemon.stop();
} else if (command.equals("start")) {
daemon.setAwait(true);
daemon.load(args);
daemon.start();
} else if (command.equals("stop")) {
daemon.stopServer(args);
}
} catch (Throwable t) {
t.printStackTrace();
}

try {

    String command = "start";

    if (args.length > 0) {

        command = args[args.length - 1];

    }



    if (command.equals("startd")) {

        args[0] = "start";

        daemon.load(args);

        daemon.start();

    } else if (command.equals("stopd")) {

        args[0] = "stop";

        daemon.stop();

    } else if (command.equals("start")) {

        daemon.setAwait(true);

        daemon.load(args);

        daemon.start();

    } else if (command.equals("stop")) {

        daemon.stopServer(args);

    }

} catch (Throwable t) {

    t.printStackTrace();

}

装载，开始运行。

posted @ 2015-02-05 09:29 湘_蜗牛阅读(192) 评论(0) 收藏举报

刷新页面返回顶部

湘_蜗牛

tomcat源码解析（1)

公告