How to call java method in php

php calls the java method: first download "php-java-bridge_6.2.1_documentation.zip" and run JavaBridge; then create a new test.php in the www directory; finally call the custom JAVA class in PHP. Can.

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1. PHP calls JAVA method

1.1. Software requirements

• Download php-java-bridge_6.2.1_documentation.zip, the download address is: http://php-java-bridge.sourceforge .net/pjb/download.php
• JavaBridge.jar: Unzip the above php-java-bridge_6.2.1_documentation.zip to get a JavaBridge.war, rename JavaBridge.war to JavaBridge.jar, again Use WinRAR to decompress JavaBridge.jar to the JavaBridge directory. JavaBridge.jar and Lucene.jar can be found in JavaBridge\WEB-INF\LIB.
• JDK: JavaBridge is implemented by the Java language, so JDK must be installed to provide support for jar file execution. And configure the environment variables.

1.2. Run JavaBridge

• Double-click to run JavaBridge.jar in JavaBridge\WEB-INF\LIB. A dialog box that can be selected should pop up. If it does not pop up , because the JDK is not installed or there is a file association error. The solution is to install the JDK or run "start javaw -jar JavaBridge.jar" (the content is saved in *.bat, and *.bat is in the same directory as JavaBridge.jar) instead of double-clicking . When the dialog box pops up, there is no need to make a selection, just click "OK". Correct as follows:

1.3. Test JavaBridge

• Create a new test.php in the www directory with the following content:

require_once("java/Java.inc");

$system = new Java('java.lang.System');

$s = new Java("java.lang.String", "php-java-bridge config...<br><br>");

echo $s;

print &#39;Java version=&#39;.$system->getProperty(&#39;java.version&#39;).&#39; <br>&#39;;

print &#39;Java vendor=&#39; .$system->getProperty(&#39;java.vendor&#39;).&#39; <br>&#39;;

print &#39;OS=&#39;.$system->getProperty(&#39;os.name&#39;).&#39; &#39;.

$system->getProperty(&#39;os.version&#39;).&#39; on &#39;.

$system->getProperty(&#39;os.arch&#39;).&#39; <br>&#39;;

$formatter = new Java(&#39;java.text.SimpleDateFormat&#39;,

"EEEE, MMMM dd, yyyy &#39;at&#39; h:mm:ss a zzzz");

print $formatter->format(new Java(&#39;java.util.Date&#39;)).&#39; <br>&#39;.&#39; <br>&#39;;

• Find JavaBridge.jar in JavaBridge\WEB-INF\LIB, decompress JavaBridge.jar and you can find the java directory in JavaBridge\META-INF. Completely copy the java directory to the same directory as test.php. Then run: http://localhost/test.php, the following content will be output, indicating that the JavaBridge installation is successful

1.4. Call customization in PHP JAVA class

• First create a test class Test.java:

public class Test {

    private String name = "";

 

    // setter and getter

    public void setName(String name) {

       this.name = name;

    }

 

    public String getName() {

       return this.name;

    }

 

    //加法

    public float add(float num1, float num2) {

       return num1 + num2;

    }

}

• After writing the class, compile Test.java to generate a class file, and convert Test. Class is copied to the C:\Program Files\Java\jre7\classes directory. Because of different version numbers, the name of the jre7 folder may be different. When installing the JDK, there is no C:\Program Files\Java\jre7\classes by default and needs to be created manually.
• Modify the content of Test.php to:

//自定义类测试

require_once("java/Java.inc");

$test = new Java("Test"); //产生实例

$test->setName("哈哈,PHP调用JAVA的方法！"); //后面的调用就跟在php中调用类方法一样

print "调用类Test的getName方法，返回值为：".$test->getName()."<br>";

print "调用Test的add方法，返回值为：".$test->add(11.2, 15.7);

• Then visit http://localhost/test.php, the page will output the following content:
• 
• It took me a day to work on this thing. I found many methods on the Internet but it didn’t work. It is inconvenient to move the class to the jre directory every time. Add java_require ("Test.jar"); This error is reported when quoting the jar package: Warning: java_require() not supported anymore. Please use fa9cd317b0b61a93533c6caa2349d3eetomcat or jee hot deployment5db79b134e9f6b82c0b36e0489ee08ed instead in D:\wamp\www\java\Java.inc on line 1656 I don’t know how to directly reference the jar package. If you know how to do it, please give me some advice. !

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