PHP中的Java扩展_PHP
java/>Java的易扩展性是它极其的令人兴奋的用途之一,通过学习如何使用这个模块,你可以扩展所有的可用到的Java类。为了使您了解到Java扩展性的基础,本篇文章包括系统的安装和一些PHP和Java一起使用的代码例子。 \n\n"
Windows下安装
以下的配置是基于Apache 1.3.12, PHP 4.0.3 (您可以在www.php4win.de下载)和JDK1.2.2 (您可以在java.sun.com下载)。我们已经在更老版本的JDK和Windows 95, Windows 98 and NT4下的各种的MS webservers(PWS和IIS)尝试过这种安装配置。
第一步:安装JDK
这个过程想当简单,由于JDK的安装没有过多的问题,但你需要做的是查看你的系统环境(在Windows9X中的autoexec.bat和NT环境下“控制面板”中的“系统”)并且确认JDK1.x.x\bin路径是否加载到path中。这个设置将会使你在编译Java类是变得更轻松。在Win9x中加入
PATH=%PATH%;C:\jdk1.2.2\bin
到你系统的autoexec.bat 在NT的系统中加入
;C:\jdk1.2.2\bin
到Path环境变量的末端。在系统中的autoexec.bat的标注是十分重要的。PHP的Java扩展将会忽JAVA_HOME和CLASSPATH在系统中的安装路径,这样一来,在php.ini中正确的设置这些项目就是十分的重要了。
第二步:修改你的php.ini
你需要加入如下的几项到你的php.ini文件
[java]
extension=php_java.dll
java.home = C:\jdk1.2.2
java.library = c:\jdk1.2.2\jre\bin\CLASSIC\jvm.dll
java.library.path=c:\web\php4\extensions\
java.class.path="c:\web\php4\extensions\jdk1.2.2\php_java.jar;c:\myclasses"
具有代表性的问题是,有些人会把extension=php_java.dll与其它的extensions在php.ini文件中放在一起,但是它正确的位置应该是在php.ini文件中的[java]下面。java.library.path一定是在php_java.dll中被设置好的,并且java.class.path中一定要包含php_java.jar的路径。java.class.path还要加入其它你可能使用其它的类的路径,正如上面所举的例子中的c:\myclasses,或者你也可以只写前面的那段路径。
第三步:测试你的安装成果
现在,你可以建立一了类似于这样的一段php程序了:
$system = new Java("java.lang.System");
print "Java version=".$system->getProperty("java.version")."
\n";
print "Java vendor=".$system->getProperty("java.vendor")."
print "OS=".$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";
?>
这是一个Sam Ruby做的例子。如果你把没一项都设置好的话,你将会看到象这样的结果:
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
(译者注:在本人的机器上运行的结果:
Java version=1.2.2
Java vendor=Sun Microsystems Inc.
OS=Windows 95 4.90 on x86
星期三, 三月 28, 2001 at 1:44:33 下午 GMT+08:00 )
这是一个非常简单的例子,但它可以告诉你用php如何访问java类,一旦你能让这个例子转起来,就说明你的php的java扩展已经安装成功。
原作者: Mark Nold,Joost Soeterbroek
来 源: phpbuild

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

Java 8 introduces the Stream API, providing a powerful and expressive way to process data collections. However, a common question when using Stream is: How to break or return from a forEach operation? Traditional loops allow for early interruption or return, but Stream's forEach method does not directly support this method. This article will explain the reasons and explore alternative methods for implementing premature termination in Stream processing systems. Further reading: Java Stream API improvements Understand Stream forEach The forEach method is a terminal operation that performs one operation on each element in the Stream. Its design intention is

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

In PHP8, match expressions are a new control structure that returns different results based on the value of the expression. 1) It is similar to a switch statement, but returns a value instead of an execution statement block. 2) The match expression is strictly compared (===), which improves security. 3) It avoids possible break omissions in switch statements and enhances the simplicity and readability of the code.

Capsules are three-dimensional geometric figures, composed of a cylinder and a hemisphere at both ends. The volume of the capsule can be calculated by adding the volume of the cylinder and the volume of the hemisphere at both ends. This tutorial will discuss how to calculate the volume of a given capsule in Java using different methods. Capsule volume formula The formula for capsule volume is as follows: Capsule volume = Cylindrical volume Volume Two hemisphere volume in, r: The radius of the hemisphere. h: The height of the cylinder (excluding the hemisphere). Example 1 enter Radius = 5 units Height = 10 units Output Volume = 1570.8 cubic units explain Calculate volume using formula: Volume = π × r2 × h (4
