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    ant
    讀書筆記——《Ant – The Definitive Guide,2nd Edition》 ???? 選擇自 hopson 的 Blog
    關鍵字 ? 讀書筆記——《Ant – The Definiive Guide,2nd Edition
    出處 ?

    第一章: Getting Started

    l ???????? Ant 默認的構建文件為 build.xml

    l ???????? Ant 構建文件中的根 XML 元素為 project project 可用屬性為:

    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

    ?

    ?

    l ???????? Ant 工程 (project) 中由若干個構建目標 (target) 組成,構建目標是一組相關任務 (Tasks) 的集合,如編譯文件、創建目錄、打包等,構建目標之間可以建立依賴關系,構建目標執行之前必須先執行所有所依賴的構建目標。 Ant 工程通過 project default 屬性指定默認的構建目標名稱。構建目標的 XML 元素為 target ,其可用的屬性為:

    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

    ?

    ?

    l ???????? 構建任務 (Tasks) 是構建目標 (target) 的基本組成部分,是 Ant 構建的基本執行單元。 Ant 中存在很多內建的構建任務,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 除了核心任務 (Core Tasks) 之外還可以使用可選任務,但使用可選任務時需要額外的 jar 庫文件的支持,這些庫文件需要存放在 Ant lib 目錄下。有了這些可選任務 Ant 可以做更多的事情,如 ftp 、編譯 .Net 工程,使用 ClearCase 等。

    ?

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    l ???????? 工程屬性 (properties) 是除了構建目標 (target) 、構建任務 (tasks) 之外的另一個 Ant 支柱,工程屬性其實是一個名稱 - 值對,可以在構建任務的 XML 元素中使用,使用方式為: ${property-name} 。工程屬性的 XML 元素為 property ,其可用的 XML 屬性為:

    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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    l ???????? Ant 的內建屬性:

    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)

    l ???????? Ant 的運行: ant [options] [target [target2 [target3] ...]] ,在 options 中可以指定要執行的構建文件,默認為 build.xml ,如果構建文件為 project.xml ,則相應用 ant 命令為 : ant –f project.xml target 可以指定多個,之間用空格分隔,如果未指定則使用構建文件中的默認目標。

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    第二章: Using Properties and Types

    l ???????? Condition 任務用于控制其他任務的執行:在 Condition 任務中設置屬性值,而在其他任務中根據這些屬性值的內容決定是否執行,如:

    <condition property="all.set">

    ??? ????<and>

    ????? ????? <available file="file1.java"/>

    ????? ???????<available file="file2.java"/>

    ??? ????</and>

    </condition>

    這個任務用于判斷 file1.java file2.java 是否存在,如果都存在,則設置 all.set 屬性為 true ,否則為 false;

    除了示例中出現的 condition and 條件任務外還有 available or equals 等其他條件任務。

    l ???????? 在任務中添加 if unless 可以決定任務是否執行,繼上例:

    														<target name="buildModule" if="all.set"/>
    												
    														
    																??????? . . .
    												
    														</target>
    												

    這個任務當 all.set true 時執行,否則不執行。

    l ???????? fail 任務用于中斷構建,如:

    														
    																<fail message="Could not find all files." unless="all.set" />
    														
    												

    all.set false 時中斷構建,并輸出 ” Could not find all files.”

    l ???????? 從文件裝入屬性: <property file="build.properties" />

    l ???????? 將文件內容作為單個屬性裝入:

    <loadfile property="message" srcFile="message.txt"/>

    l ???????? 屬性可以設置多次,后頁的屬性會覆蓋前頁的屬性值。

    l ???????? 通過命令行設置屬性值:使用 -D 選項

    ant -Dmessage="Compiling and compressing"

    l ???????? 使用環境變量作為屬性值,如:

    <property environment="env" />

    加上這句以后可以使用如下方式獲取環境變量 JAVA_HOME 的值:

    ${env.JAVA_HOME} ,其他環境變量也通過類似方式獲得。

    l ???????? fileset 用于指定文件集,并設置到屬性中用于其他任務的構建,如文件復制、編譯等, 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 ** 表示當前目錄或當前目錄下的所有子目錄。除了使用 include exclude 之外還可以使用 filename 來指定加入文件集的特定文件,如:

    <fileset dir="${source}">

    ??? <filename name="**/*.java"/>

    ??? <filename name="test.cpp"/>

    </fileset>

    l ???????? 使用 fileset 的示例 :

    <copy todir="../dest">

    ??? <fileset dir="src">

    ??????? <exclude name="**/*.java"/>

    ??? </fileset>

    </copy>

    這個任務將 fileset 中的文件復制到 ../dest 目錄下

    l ???????? 相對于 fileset 還可以使用 dirset 表示目錄集,使用與 fileset 類同。

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    第三章: Building Java Code

    l ???????? javac 任務用于編譯 java 源代碼,如:

    <javac srcdir="${src}"

    ??? debug="on"

    ??? destdir="${bin}"

    ??? classpath="common.jar"

    />

    l ???????? input 任務可接收用戶輸入,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>

    l ???????? 在同一構建文件中可以使用 antcall 任務執行另一個構建任務,并可指定構建參數作為構建屬性,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 任務調用了 displayMessage 任務,并設置 msg 參數作為調用屬性,在 displayMessage 任務中可以通過 ${msg} 獲取該屬性值。

    l ???????? 使用 ant 任務執行另一 Ant 構建文件,如:

    <ant antfile="subproject/subbuild.xml">

    ??? <property name="parameter" value="4096"/>

    ??? <property file="config/subproject/build.properties"/>

    </ant>

    本例中執行了另一以 subproject/subbuild.xml 為構建文件的 Ant 構建,將指定了構建的屬性值,除此之外還可指定構建目標等其他選項。

    l ???????? 使用 import 導入其他構建文件的內容,如:

    <import file="shared.xml"/>

    l ???????? 使用 javadoc 任務創建 java 文檔,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 &#169; 2005</i>]]></bottom>

    </javadoc>

    l ???????? 使用 jar 任務創建 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>

    l ???????? 使用 buildnumber 任務讀取并創建構建序號, buildnumber 從文件 ( 默認為 build.number) 中讀取原構建序號并存到 build.number 屬性中,在成功構建后加 1 寫回到文件中。 Buildnumber file 屬性用于指定存放構建序號的文件。

    l ???????? 使用 tstamp 任務設置時間屬性,有 3 個屬性被設置,分別為 DSTAMP ,格式為 yyyyMMdd” TSTAMP ,格式為 ”hhmm” TODAY ,格式為 ”MM dd yyyy” Tstamp 的子任務 format 可以設置時間的格式,如:

    <tstamp>

    ?? <format property="timestamp" pattern="MM/dd/yyyy hh:mm:ss"/>

    </tstamp>

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    第四章: Deploying Builds

    l ???????? 使用 tar 任務創建 tar 文件,如:

    <tar

    ???? destfile="${output}/Project.tar.gz"

    ???? basedir="${output}"

    ???? includes="*.class"

    ??? compression="gzip"/>

    l ???????? 刪除已存在的文件: <delete file="/lib/Project.jar"/>

    l ???????? 刪除已存在的目錄: <delete dir="${dist}"/>

    l ???????? 創建目錄: <mkdir dir="${dist}"/>

    l ???????? copy 任務用于復制文件或目錄。

    l ???????? move 任務用于移動文件或目錄。

    l ???????? 使用 ftp 發送或接收文件,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 action 包括: put, get, del, list, chmod, mkdir and rmdir

    l ???????? 使用 telnet ,如:

    <telnet userid="steven" password="let_me_in"

    ????????????????? server="xxx.xxx.xxx.xxx">

    ???? <read>/home/steven</read>

    ???? <write>ls</write>

    </telnet>

    l ???????? 使用 SSH ,如 :

    <sshexec host="xxx.xxx.xxx.xxx"

    ??? username="${name}"

    ??? password="${password}"

    ??? command="touch index.html"/>

    l ???????? 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>

    l ???????? 自動構建:可以使用 Windows 的計劃任務,或 Anthill 工具進行自動構建。

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    第六章: Getting Source Code from CVS Repositories

    l ???????? 登入 (login)

    <cvspass

    ?????? cvsroot=":pserver:steven@STEVE:/home/steven/repository"

    ??????? password="opensesame" />

    l ???????? 檢出 (check out)

    <cvs package="GreetingApp" dest="${cvs.dir}" />

    l ???????? 更新 (update):

    <cvs dest="${cvs.dir}" command="update"/>

    l ???????? 提交 (commit):

    <cvs dest="${cvs.dir}/GreetingApp"

    command="commit -m 'New Version'"/>

    l ???????? 創建更新日志 (change log)

    <cvschangelog dir="${cvs.dir}/GreetingApp"

    ?????????? ???? destfile="changelog.xml" />

    ?

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    第七章: Executing External Programs

    l ???????? 執行 Java 代碼,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>

    l ???????? exec 任務用于執行系統命令或外部程序,如:

    <exec dir="." executable="/bin/cpp.exe"

    ??????? failonerror="true">

    ??????????? <arg line="-c ${src}/*.cpp ${output}"/>

    </exec>

    l ???????? apply 任務執行批處理, apply exec 的差別是 apply 接收 fileset ,這樣可以對多個文件或輸入執行相同中的命令或程序。

    l ???????? parallel 可執行多線程任務。

    posted on 2006-09-08 16:07 kongjia 閱讀(813) 評論(0)  編輯  收藏

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