第一章:
Getting Started
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Ant
默认的构建文件为
build.xml
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Ant
构建文件中的根
XML
元素为
project
,
project
可用属性为:
Attribute
|
Description
|
Required
|
name
|
Defines the project name
|
No
|
default
|
The target to invoke if no target is explicitly specified
|
Yes
|
basedir
|
The base directory from which all relative paths are resolved
|
No
|
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Ant
工程
(project)
中由若干个构建目标
(target)
组成,构建目标是一组相关任务
(Tasks)
的集合,如编译文件、创建目录、打包等,构建目标之间可以建立依赖关系,构建目标执行之前必须先执行所有所依赖的构建目标。
Ant
工程通过
project
的
default
属性指定默认的构建目标名称。构建目标的
XML
元素为
target
,其可用的属性为:
Attribute
|
Description
|
Required
|
name
|
Defines the target name
|
Yes
|
depends
|
Comma-separated list of targets to execute before this target
|
No
|
if
|
Name of a property needed to run this task
|
No
|
unless
|
Name of a property that can not be set before running this task
|
No
|
description
|
Description of this target's purpose
|
No
|
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构建任务
(Tasks)
是构建目标
(target)
的基本组成部分,是
Ant
构建的基本执行单元。
Ant
中存在很多内建的构建任务,如下表所示:
Task Name
|
Description
|
ant
|
Executes Ant
|
antcall
|
Executes a target from the current build file
|
antstructure
|
From a given build file, creates a DTD reflecting all of the tasks Ant currently knows about
|
apply [execon]
|
Invokes a native executable
|
available
|
Sets a Boolean value in a property according to the availability of desired resource
|
basename
|
Sets a property to the last element of a specified path in an effort to determine a file's name without directory structure
|
buildnumber
|
Manages build numbers
|
bunzip2
|
Expands GZip or BZip2 archives
|
bzip2
|
Packs GZip or BZip2 archives
|
checksum
|
Creates checksums for one or more files
|
chmod
|
Modifies file permissions on Unix
|
concat
|
Concatenates multiple files
|
condition
|
Checks the result of a condition and sets the result to in a property
|
copy [copydir, copyfile]
|
Copies files
|
cvs
|
Interacts with a CVS repository
|
cvschangelog
|
Converts a series of CVS change logs into an XML report
|
cvspass
|
Adds entries to a .cvspass file
|
cvstagdiff
|
Creates an XML report highlighting the differences between tags
|
cvsversion
|
Finds the CVS software version
|
defaultexcludes
|
Modifies
the list of default exclude patterns, affecting which files are
automatically excluded from processing by file-related tasks
|
delete [deltree]
|
Delete files and folders
|
dependset
|
Deletes target files that are older than new source files
|
dirname
|
Assigns a file's directory path to a property
|
ear
|
Extends the jar task to support handling files for an Enterprise Application archive (EAR)
|
echo
|
Echoes text to System.out or to a file
|
exec
|
Invokes a native executable
|
fail
|
Halts and exits a build by throwing a BuildException
|
filter
|
Sets a token filter that can be used by filter-related tasks such as copy
|
fixcrlf
|
Adds or remove tabs, carriage returns, linefeeds, and EOF characters from a set of files
|
genkey
|
Adds a new key to a given keystore
|
get
|
Retrieves files using FTP, HTTP, and more from a URL
|
gunzip
|
Unpacks a GZip file
|
gzip
|
Packs a GZip file
|
import
|
Allows the use of other Ant files
|
input
|
Displays a message and reads a line of input from the console, allowing for user input during the build process
|
jar
|
Creates a JAR archive similar to Java's jar command
|
java
|
Executes the Java interpreter to run a class or application
|
javac
|
Compiles the specified source file(s)
|
javadoc [javadoc2]
|
Invokes the javadoc tool to create documentation
|
loadfile
|
Sets a property file to the entire contents of a text file
|
loadproperties
|
Loans an entire property file into Ant properties
|
macrodef
|
Defines a new task as a macro built-up upon other tasks
|
mail
|
Sends SMTP mail messages
|
manifest
|
Creates an archive's manifest file
|
mkdir
|
Makes a new directory
|
move [rename]
|
Moves a file to another directory
|
parallel
|
Contains other Ant tasks that can be run simultaneously by multiple Java threads
|
patch
|
Uses the patch command (assuming it is on the path) to apply diff files to a source file (or files)
|
pathconvert
|
Converts paths between platforms
|
presetdef
|
Defines a new task based on an existing task with certain options preset as defaults
|
property
|
Sets one or more properties to new values
|
record
|
Runs a listener that records the logging output of the build process to a file
|
replace
|
Replaces a string with another in all files in a directory
|
rmic
|
Invokes the rmic compiler
|
sequential
|
A container task that can contain other Ant tasks and run them in sequence
|
signjar
|
Uses the JarSigner to securely sign ZIP and JAR archives
|
sleep
|
Suspends execution for a specified period of time
|
sql
|
Runs SQL statements against a database
|
subant
|
Runs Ant within all subdirectories of the project directory
|
sync
|
Synchronizes two directory trees
|
tar
|
Makes a new TAR archive
|
taskdef
|
Creates a new task definition and adds it to the current project
|
tempfile
|
Sets a temporary filename to an Ant property
|
tstamp
|
Sets time-based properties to the current time
|
typedef
|
Creates a new task or data type for use in the current project
|
unjar
|
Unpacks a JAR file
|
untar
|
Unpacks a TAR file
|
unwar
|
Unpacks a WAR file
|
unzip
|
Unpacks a ZIP file
|
uptodate
|
Sets a property value to true if a given target file is newer than a set of source files
|
waitfor
|
Halts a build and continues when specified conditions are met
|
war
|
Creates WAR archive files (an extension of the jar task)
|
whichresource
|
Locates a class or resource, either on the current class path or the system class path
|
xmlproperty
|
Loads Ant properties from an XML property file
|
xslt [style]
|
Transforms a set of documents via XSLT
|
zip
|
Creates and packs a new ZIP archive
|
Ant
除了核心任务
(Core Tasks)
之外还可以使用可选任务,但使用可选任务时需要额外的
jar
库文件的支持,这些库文件需要存放在
Ant
的
lib
目录下。有了这些可选任务
Ant
可以做更多的事情,如
ftp
、编译
.Net
工程,使用
ClearCase
等。
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工程属性
(properties)
是除了构建目标
(target)
、构建任务
(tasks)
之外的另一个
Ant
支柱,工程属性其实是一个名称
-
值对,可以在构建任务的
XML
元素中使用,使用方式为:
${property-name}
。工程属性的
XML
元素为
property
,其可用的
XML
属性为:
Attribute
|
Description
|
Required
|
classpath
|
The classpath to use when looking for a resource.
|
No
|
classpathref
|
The classpath to use when looking for a resource, which can then be given as a reference to a path element later in the build file.
|
No
|
environment
|
The
prefix to use when retrieving environment variables. For example, if
you specify environment="env", you will be able to access
operating-system-specific environment variables as property names like
${env.PATH}.
|
A resource, file, url, or environment attribute is required when not using the name attribute.
|
file
|
The name of a property file to load values from.
|
A resource, file, url, or environment attribute is required when not using the name attribute.
|
location
|
Sets
the property to the absolute filename of the given file. If an absolute
path is supplied, it's left unchanged (with / and \ characters
converted for the current platforms). Otherwise, the supplied filename
is taken as a path relative to the project's base directory and then
expanded.
|
A value, location, or refid element is required when using the name attribute.
|
name
|
The name of the property to set.
|
No
|
prefix
|
The prefix to add to properties loaded from a file or a resource. A . is appended to the prefix if none is specified.
|
No
|
refid
|
A reference to a (previously) defined object.
|
A value, location, or refid element is required when using the name attribute.
|
resource
|
The resource name of the property file, used for searching the classpath.
|
A resource, file, url, or environment attribute is required when not using the name attribute.
|
url
|
The URL from which to read properties.
|
A resource, file, url, or environment attribute is required when not using the name attribute.
|
value
|
The value of this property.
|
A value, location, or refid element is required when using the name attribute.
|
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Ant
的内建属性:
ant.file
Contains the absolute path of the build file
ant.java.version
Contains the JVM version Ant is using (can hold only 1.1, 1.2, 1.3, 1.4 and [as of Ant 1.6] 1.5)
ant.project.name
Holds the name of the project that is executing (set with the name attribute of project)
ant.version
Contains the version of Ant running
basedir
Holds the absolute path of the project's base directory (set with the basedir attribute of project)
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Ant
的运行:
ant [options] [target [target2 [target3] ...]]
,在
options
中可以指定要执行的构建文件,默认为
build.xml
,如果构建文件为
project.xml
,则相应用
ant
命令为
: ant –f project.xml
,
target
可以指定多个,之间用空格分隔,如果未指定则使用构建文件中的默认目标。
第二章:
Using Properties and Types
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Condition
任务用于控制其他任务的执行:在
Condition
任务中设置属性值,而在其他任务中根据这些属性值的内容决定是否执行,如:
<condition property="all.set">
<and>
<available file="file1.java"/>
<available file="file2.java"/>
</and>
</condition>
这个任务用于判断
file1.java
和
file2.java
是否存在,如果都存在,则设置
all.set
属性为
true
,否则为
false;
除了示例中出现的
condition
和
and
条件任务外还有
available
、
or
、
equals
等其他条件任务。
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在任务中添加
if
或
unless
可以决定任务是否执行,继上例:
<target name="buildModule" if="all.set"/>
. . .
</target>
这个任务当
all.set
为
true
时执行,否则不执行。
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fail
任务用于中断构建,如:
<fail message="Could not find all files." unless="all.set" />
当
all.set
为
false
时中断构建,并输出
” Could not find all files.”
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从文件装入属性:
<property file="build.properties" />
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将文件内容作为单个属性装入:
<loadfile property="message" srcFile="message.txt"/>
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属性可以设置多次,后页的属性会覆盖前页的属性值。
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通过命令行设置属性值:使用
-D
选项
ant -Dmessage="Compiling and compressing"
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使用环境变量作为属性值,如:
<property environment="env" />
加上这句以后可以使用如下方式获取环境变量
JAVA_HOME
的值:
${env.JAVA_HOME}
,其他环境变量也通过类似方式获得。
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fileset
用于指定文件集,并设置到属性中用于其他任务的构建,如文件复制、编译等,
fileset
的示例如下:
<fileset dir="${source}">
<include name="**/*.java"/>
<exclude name="**/*test*"/>
</fileset>
include
用于包含文件,
exclude
用于排除文件,通配符
**
表示当前目录或当前目录下的所有子目录。除了使用
include
和
exclude
之外还可以使用
filename
来指定加入文件集的特定文件,如:
<fileset dir="${source}">
<filename name="**/*.java"/>
<filename name="test.cpp"/>
</fileset>
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使用
fileset
的示例
:
<copy todir="../dest">
<fileset dir="src">
<exclude name="**/*.java"/>
</fileset>
</copy>
这个任务将
fileset
中的文件复制到
../dest
目录下
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相对于
fileset
还可以使用
dirset
表示目录集,使用与
fileset
类同。
第三章:
Building Java Code
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javac
任务用于编译
java
源代码,如:
<javac srcdir="${src}"
debug="on"
destdir="${bin}"
classpath="common.jar"
/>
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input
任务可接收用户输入,如:
<target name="init">
<input
message="Deleting bin directory OK?"
validargs="y,n"
addproperty="do.delete"
/>
<condition property="do.abort">
<equals arg1="n" arg2="${do.delete}"/>
</condition>
<fail if="do.abort">Build aborted.</fail>
<delete dir="${output}" />
<mkdir dir="${output}" />
</target>
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在同一构建文件中可以使用
antcall
任务执行另一个构建任务,并可指定构建参数作为构建属性,如:
<target name="main" depends="init, compile, compress">
<antcall target="displayMessage">
<param name="msg" value="${message}"/>
</antcall>
</target>
<target name="displayMessage">
<echo message="msg=${msg}"/>
</target>
在本例中
main
任务调用了
displayMessage
任务,并设置
msg
参数作为调用属性,在
displayMessage
任务中可以通过
${msg}
获取该属性值。
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使用
ant
任务执行另一
Ant
构建文件,如:
<ant antfile="subproject/subbuild.xml">
<property name="parameter" value="4096"/>
<property file="config/subproject/build.properties"/>
</ant>
本例中执行了另一以
subproject/subbuild.xml
为构建文件的
Ant
构建,将指定了构建的属性值,除此之外还可指定构建目标等其他选项。
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使用
import
导入其他构建文件的内容,如:
<import file="shared.xml"/>
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使用
javadoc
任务创建
java
文档,如:
<javadoc
sourcefiles="${src}/Project.java"
destdir="${docs}"
author="true"
version="true"
use="true"
windowtitle="Project API">
<doctitle><![CDATA[<h1>Project API</h1>]]></doctitle>
<bottom><![CDATA[<i>Copyright © 2005</i>]]></bottom>
</javadoc>
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使用
jar
任务创建
jar
包,如
:
<jar destfile="${output}/Project.jar" basedir="${output}"
includes="*.class" >
<manifest>
<attribute name="Author" value="${user.name}"/>
<section name="Shared">
<attribute name="Title" value="Example"/>
<attribute name="Vendor" value="MegaAntCo"/>
</section>
<section name="Copyright">
<attribute name="Copy" value="(C) MegaAntCo 2005"/>
</section>
</manifest>
</jar>
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使用
buildnumber
任务读取并创建构建序号,
buildnumber
从文件
(
默认为
build.number)
中读取原构建序号并存到
build.number
属性中,在成功构建后加
1
写回到文件中。
Buildnumber
的
file
属性用于指定存放构建序号的文件。
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使用
tstamp
任务设置时间属性,有
3
个属性被设置,分别为
DSTAMP
,格式为
”
yyyyMMdd”
;
TSTAMP
,格式为
”hhmm”
;
TODAY
,格式为
”MM dd yyyy”
。
Tstamp
的子任务
format
可以设置时间的格式,如:
<tstamp>
<format property="timestamp" pattern="MM/dd/yyyy hh:mm:ss"/>
</tstamp>
第四章:
Deploying Builds
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使用
tar
任务创建
tar
文件,如:
<tar
destfile="${output}/Project.tar.gz"
basedir="${output}"
includes="*.class"
compression="gzip"/>
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删除已存在的文件:
<delete file="/lib/Project.jar"/>
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删除已存在的目录:
<delete dir="${dist}"/>
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创建目录:
<mkdir dir="${dist}"/>
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copy
任务用于复制文件或目录。
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move
任务用于移动文件或目录。
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使用
ftp
发送或接收文件,如:
<ftp server="xxx.xxx.xxx.xxx" binary="true" verbose="true"
userid="${name}" password="${password}"
remotedir="/cgi-bin" action=”send” >
<fileset dir="${output}">
<exclude name="*.java"/>
<exclude name="*.class"/>
<exclude name="*.txt"/>
</fileset>
</ftp>
ftp
的
action
包括:
put, get, del, list, chmod, mkdir and rmdir
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使用
telnet
,如:
<telnet userid="steven" password="let_me_in"
server="xxx.xxx.xxx.xxx">
<read>/home/steven</read>
<write>ls</write>
</telnet>
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使用
SSH
,如
:
<sshexec host="xxx.xxx.xxx.xxx"
username="${name}"
password="${password}"
command="touch index.html"/>
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使用
email
,如:
<mail mailhost="smtp.isp.com" mailport="1025" subject="New Build">
<from address="developer@isp.com"/>
<replyto address="developer@isp.com"/>
<to address="list@xyz.com"/>
<message>Here is the new build.</message>
<fileset dir="dist">
<includes name="**/*.tar.gz"/>
</fileset>
</mail>
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自动构建:可以使用
Windows
的计划任务,或
Anthill
工具进行自动构建。
第六章:
Getting Source Code from CVS Repositories
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登入
(login)
:
<cvspass
cvsroot=":pserver:steven@STEVE:/home/steven/repository"
password="opensesame" />
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检出
(check out)
:
<cvs package="GreetingApp" dest="${cvs.dir}" />
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更新
(update):
<cvs dest="${cvs.dir}" command="update"/>
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提交
(commit):
<cvs dest="${cvs.dir}/GreetingApp"
command="commit -m 'New Version'"/>
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创建更新日志
(change log)
:
<cvschangelog dir="${cvs.dir}/GreetingApp"
destfile="changelog.xml" />
第七章:
Executing External Programs
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执行
Java
代码,如:
<java jar="${bin}/connect.jar"
fork="true"
failonerror="true"
maxmemory="512m"
>
<arg value="-q"/>
<classpath>
<pathelement location="${bin}/connect.jar"/>
<pathelement path="${java.class.path}"/>
</classpath>
</java>
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exec
任务用于执行系统命令或外部程序,如:
<exec dir="." executable="/bin/cpp.exe"
failonerror="true">
<arg line="-c ${src}/*.cpp ${output}"/>
</exec>
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用
apply
任务执行批处理,
apply
与
exec
的差别是
apply
接收
fileset
,这样可以对多个文件或输入执行相同中的命令或程序。
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用
parallel
可执行多线程任务。