Ant中的“运行Javac编译器时出错”

Question

I was trying to run an Ant script in Eclipse, but I am getting the below error:

BUILD FAILED

C:\\Users\\name\\workspace\\Client\\build\\Build_Local.xml:111: Error running C:\\Program Files\\Java\\jdk1.6.0_45\\jre\\bin\\javac compiler.

My java home is pointed to jdk and I edited the java path in windows>preferences>installed jre as well as in run>external tool>config>jre . Both locations are pointed to jdk. Also I am posting my build file(This is not the exact file, I have edited a lot before posting)

<?xml version="1.0"?>
<project name="projectName" default="main" basedir="C:\path\build">
<property name="LocalHome" value="C:\proName" />
<property name="home" value="${LocalHome}"/>
<property name="java.home" value="C:\Program Files \Java\jdk1.6.0_45"/>
<property name="CLIENT_JAR" value="client.jar"/>

<target name="main" description=": This is the default target.">
    <antcall target="name"/>
</target>

<target name="name">
    <javac failonerror="true" srcdir="${home}/source" destdir="path to class file"
           executable="${java.home}\bin\javac" fork="true"  debug="on" encoding="UTF-8"
           source="1.6" target="1.6" bootclasspath="${java.home}/jre/lib/rt.jar"
           classpath=""/>
</project>

See here I mentioned the javac path to "C:\\Program Files \\Java\\jdk1.6.0_45\\bin\\javac". Then why does Ant choose javac from C:\\Program Files\\Java\\jdk1.6.0_45\\jre\\bin\\javac (see the build error)

Answer 1

当我直接使用java home home位置（C：\\ Program Files \\ Java \\ jdk1.6.0_45）代替java.home时，它起作用

Answer 2

${java.home} points to C:\\Program Files\\Java\\jdk1.6.0_45\\ jre . So you should be able to just remove that from bootclasspath :

bootclasspath="${java.home}/lib/rt.jar"

If you put the following line below a target, you'll see it print out the full path with jre appended:

<echo level="info" message="java.home = ${java.home}"/>