[用ant编译时找不到javac类

Question

所以我在Centos6.4上以这种方式安装了Java 7和Javac

rpm -Uvh /path/to/binary/jdk-7u45-linux-x64.rpm
alternatives --install /usr/bin/javac javac /usr/java/jdk1.7.0_45/bin/javac 200000
export JAVA_HOME="/usr/java/jdk1.7.0_45"

所以我有：

$ java -version
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)
$ javac -version
javac 1.7.0_45
$ ant -version
Apache Ant version 1.7.1 compiled on August 24 2010

这里是编译时出现的错误：

BUILD FAILED
/home/user/project/build.xml:413: Class not found: javac1.7

有什么想法吗？谢谢

Answer 1

正如Petesh所说，ant 1.8.2支持别名编译目标。