PHP中调用JAVA
PHP与JAVA
JAVA是个非常强大的编程利器,它的扩展库也是非常的有用,这篇教程,主要讲述怎样使用PHP调用功能强大的JAVA 类库(classes)。为了方便你的学习,这篇教程将包括JAVA的安装及一些基本的例子。
windows下的安装
第一步:安装JDK,这是非常容易的,你只需一路回车的安装好。然后做好以下步骤。
在 Win9x 下加入 :“PATH=%PATH%;C:\jdk1.2.2\bin” 到AUTOEXEC.BAT文件中
在 NT /Win2000下加入 “;C:\jdk1.2.2\bin”到环境变量中。
这一步是非常重要的,这样PHP才能正确的找到需调用的JAVA类。
第二步:修改你的PHP.INI文件。
[java]
extension=php_java.dll
java.library.path=c:\web\php4\extensions\
java.class.path="c:\web\php4\extensions\jdk1.2.2\php_java.jar;c:\myclasses"
在PHP.INI中加入extension=php_java.dll
并在[java]中,设定好java.class.path,让它指向php_java.jar,如果你使用新的JAVA类,你也应该存入这个路径,在这篇例子中,我们使用c:\myclasses这个目录。
第三步:测试环境,创建如下PHP文件:
$system = new Java("java.lang.System");
print "Java version=".$system->getProperty("java.version")."\n";
print "Java vendor=".$system->getProperty("java.vendor")."\n\n";
print "OS=".$system->getProperty("os.name")." ".
$system->getProperty("os.version")." on ".
$system->getProperty("os.arch")."\n";
$formatter = new Java("java.text.SimpleDateFormat","EEEE,
MMMM dd, yyyy 'at' h:mm:ss a zzzz");
print $formatter->format(new Java("java.util.Date"))."\n";
?>
如果你正确安装了,你将会看到以下信息:
Java version=1.2.2
Java vendor=Sun Microsystems Inc.
OS=Windows 95 4.10 on x86
Wednesday, October 18, 2000 at 10:22:45 AM China Standard Time
这样,我们就已经成功的建立起了可以使用JAVA类的PHP运行环境,我们可以开始我们接下去的课程了。

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