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我是Ant和GWT的初學者，我正在通過以下GWT頁面上提到的步驟創建GWT中的新Ant項目：webAppCreator下的創建Ant項目部分。我能夠成功創建這個項目，但我得到了錯誤build.xml不存在！在命令提示符日誌中。即使按照此處提及的所有步驟完成後，我也無法解決此問題：ant build.xml file doesn't exist。ant build.xml不存在。構建失敗
這是我的命令提示符日誌：
C:\Users\TEST>webAppCreator -junit D:\SELENIUM\junit-4.10.jar -out foo com.example.foo.Foo
Generating from templates: [sample, eclipse, readme, _eclipse-test, _sample-test, ant]
Created directory foo
Created directory foo\src
Created directory foo\src\com\example\foo
Created directory foo\src\com\example\foo\client
Created directory foo\src\com\example\foo\server
Created directory foo\src\com\example\foo\shared
Created directory foo\test
Created directory foo\test\com\example\foo
Created directory foo\war
Created directory foo\war\WEB-INF
Created directory foo\test\com\example\foo\client
Created file foo\src\com\example\foo\Foo.gwt.xml
Created file foo\src\com\example\foo\client\GreetingService.java
Created file foo\src\com\example\foo\client\GreetingServiceAsync.java
Created file foo\src\com\example\foo\client\Foo.java
Created file foo\src\com\example\foo\server\GreetingServiceImpl.java
Created file foo\src\com\example\foo\shared\FieldVerifier.java
Created file foo\war\WEB-INF\web.xml
Created file foo\war\Foo.css
Created file foo\war\Foo.html
Created file foo\war\favicon.ico
Created file foo\.classpath
Created file foo\.project
Created file foo\Foo.launch
Created file foo\README.txt
Created file foo\FooSuite-dev.launch
Created file foo\FooSuite-prod.launch
Created file foo\test\com\example\foo\FooJUnit.gwt.xml
Created file foo\test\com\example\foo\FooSuite.java
Created file foo\test\com\example\foo\client\FooTest.java
Created file foo\build.xml
C:\Users\TEST>ant build
Buildfile: build.xml does not exist!
Build failed
C:\Users\TEST>ant devmode
Buildfile: build.xml does not exist!
Build failed
這裏是我的build.xml文件：
<?xml version="1.0" encoding="utf-8" ?>
<project name="Foo" default="build" basedir=".">
<!-- Arguments to gwtc and devmode targets -->
<property name="gwt.args" value="" />
<!-- Configure path to GWT SDK -->
<property name="gwt.sdk" location="D:/GWT/gwt-2.8.1/gwt-2.8.1" />
<path id="project.class.path">
<pathelement location="war/WEB-INF/classes"/>
<pathelement location="${gwt.sdk}/gwt-user.jar"/>
<pathelement location="${gwt.sdk}/gwt-dev.jar"/>
<pathelement location="${gwt.sdk}/validation-api-1.0.0.GA.jar"/>
<pathelement location="${gwt.sdk}/validation-api-1.0.0.GA-sources.jar"/>
<fileset dir="war/WEB-INF/lib" includes="**/*.jar"/>
<!-- Add any additional non-server libs (such as JUnit) here -->
</path>
<target name="libs" description="Copy libs to WEB-INF/lib">
<mkdir dir="war/WEB-INF/lib" />
<copy todir="war/WEB-INF/lib" file="${gwt.sdk}/gwt-servlet.jar" />
<copy todir="war/WEB-INF/lib" file="${gwt.sdk}/gwt-servlet-deps.jar" />
<!-- Add any additional server libs that need to be copied -->
</target>
<target name="javac" depends="libs" description="Compile java source to bytecode">
<mkdir dir="war/WEB-INF/classes"/>
<javac srcdir="src" includes="**" encoding="utf-8"
destdir="war/WEB-INF/classes"
source="1.7" target="1.7" nowarn="true"
debug="true" debuglevel="lines,vars,source">
<classpath refid="project.class.path"/>
</javac>
<copy todir="war/WEB-INF/classes">
<fileset dir="src" excludes="**/*.java"/>
</copy>
</target>
<target name="gwtc" depends="javac" description="GWT compile to JavaScript (production mode)">
<java failonerror="true" fork="true" classname="com.google.gwt.dev.Compiler" maxmemory="512m">
<classpath>
<pathelement location="src"/>
<path refid="project.class.path"/>
</classpath>
<arg line="-war"/>
<arg value="war"/>
<!-- Additional arguments like -style PRETTY or -logLevel DEBUG -->
<arg line="${gwt.args}"/>
<arg value="com.example.foo.Foo"/>
</java>
</target>
<target name="devmode" depends="javac" description="Run development mode (pass -Dgwt.args=-nosuperDevMode to fallback to classic DevMode)">
<java failonerror="true" fork="true" classname="com.google.gwt.dev.DevMode" maxmemory="1g">
<classpath>
<pathelement location="src"/>
<path refid="project.class.path"/>
<pathelement location="${gwt.sdk}/gwt-codeserver.jar"/>
</classpath>
<arg value="-startupUrl"/>
<arg value="Foo.html"/>
<arg line="-war"/>
<arg value="war"/>
<!-- Additional arguments like -style PRETTY, -logLevel DEBUG or -nosuperDevMode -->
<arg line="${gwt.args}"/>
<arg value="com.example.foo.Foo"/>
<arg value="com.example.foo.Foo"/>
</java>
</target>
<target name="javac.tests" depends="javac" description="Compiles test code">
<javac srcdir="test" includes="**" encoding="utf-8"
source="1.7" target="1.7" nowarn="true"
destdir="war/WEB-INF/classes"
debug="true" debuglevel="lines,vars,source">
<classpath location="D:\SELENIUM\junit-4.10.jar"/>
<classpath refid="project.class.path"/>
</javac>
</target>
<target name="test.dev" depends="javac.tests" description="Run development mode tests">
<mkdir dir="reports/htmlunit.dev" />
<junit fork="yes" printsummary="yes" haltonfailure="yes" maxmemory="256m">
<sysproperty key="gwt.args" value="-devMode -logLevel WARN -war www-test" />
<sysproperty key="java.awt.headless" value="true" />
<classpath>
<pathelement location="src" />
<pathelement location="test" />
<path refid="project.class.path" />
<pathelement location="D:/GWT/gwt-2.8.1/gwt-2.8.1/validation-api-1.0.0.GA.jar" />
<pathelement location="D:/GWT/gwt-2.8.1/gwt-2.8.1/validation-api-1.0.0.GA-sources.jar" />
<pathelement location="D:\SELENIUM\junit-4.10.jar" />
</classpath>
<batchtest todir="reports/htmlunit.dev" >
<fileset dir="test" >
<include name="**/*Suite.java" />
</fileset>
</batchtest>
<formatter type="plain" />
<formatter type="xml" />
</junit>
</target>
<target name="test.prod" depends="javac.tests" description="Run production mode tests">
<mkdir dir="reports/htmlunit.prod" />
<junit fork="yes" printsummary="yes" haltonfailure="yes" maxmemory="256m">
<sysproperty key="gwt.args" value="-logLevel WARN -war www-test" />
<sysproperty key="java.awt.headless" value="true" />
<classpath>
<pathelement location="src" />
<pathelement location="test" />
<path refid="project.class.path" />
<pathelement location="D:/GWT/gwt-2.8.1/gwt-2.8.1/validation-api-1.0.0.GA.jar" />
<pathelement location="D:/GWT/gwt-2.8.1/gwt-2.8.1/validation-api-1.0.0.GA-sources.jar" />
<pathelement location="D:\SELENIUM\junit-4.10.jar" />
</classpath>
<batchtest todir="reports/htmlunit.prod" >
<fileset dir="test" >
<include name="**/*Suite.java" />
</fileset>
</batchtest>
<formatter type="plain" />
<formatter type="xml" />
</junit>
</target>
<target name="test" description="Run development and production mode tests">
<antcall target="test.dev" />
<antcall target="test.prod" />
</target>
<target name="build" depends="gwtc" description="Build this project" />
<target name="war" depends="build" description="Create a war file">
<zip destfile="Foo.war" basedir="war"/>
</target>
<target name="clean" description="Cleans this project">
<delete dir="war/WEB-INF/classes" failonerror="false" />
<delete dir="war/foo" failonerror="false" />
</target>
</project>
是否有人可以幫我解決這個問題？