使用PhpJasper创建报告时JDK版本出错

Question

我试图用PHPJasper创建一些代码，但在同一行中我会出错。我认为这是Java版本的问题。

文件hello_world.jasper已经存在于我的项目中。

源代码：

require __DIR__ . '/vendor/autoload.php';

use PHPJasper\PHPJasper;

$jasper = new PHPJasper;

$input = __DIR__ . '/vendor/geekcom/phpjasper/examples/hello_world.jasper';
$output = __DIR__ . '/vendor/geekcom/phpjasper/examples';
$options = [
    'format' => ['pdf', 'rtf']
];

$jasper->process(
    $input,
    $output,
    $options
)->execute();

var_dump($jasper);

execute()行控制台中的错误

Exception in thread "main" java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap')
    at de.cenote.tools.classpath.ApplicationClasspath.add(ApplicationClasspath.java:75)
    at de.cenote.tools.classpath.ApplicationClasspath.add(ApplicationClasspath.java:65)
    at de.cenote.tools.classpath.ApplicationClasspath.addJars(ApplicationClasspath.java:134)
    at de.cenote.tools.classpath.ApplicationClasspath.addJarsRelative(ApplicationClasspath.java:151)
    at de.cenote.jasperstarter.App.processReport(App.java:178)
    at de.cenote.jasperstarter.App.main(App.java:109)
PHP Fatal error:  Uncaught PHPJasper\Exception\ErrorCommandExecutable: Your report has an error and couldn 't be processed!\ Try to output the command using the function `output();` and run it manually in the console. in /home/jack/PhpstormProjects/JasperTest/vendor/geekcom/phpjasper/src/PHPJasper.php:219

Java版本：

java -version
openjdk version "11.0.4" 2019-07-16
OpenJDK Runtime Environment (build 11.0.4+11-post-Ubuntu-1ubuntu219.04)
OpenJDK 64-Bit Server VM (build 11.0.4+11-post-Ubuntu-1ubuntu219.04, mixed mode, sharing)

我怎么才能修好它？

Answer 1

我有解决这个问题的办法。

我删除了所有java包(sudo apt-get remove openjdk...)，并重新安装了JavaJDK1.8 (指令)版本。

在此之后，我得到了正确版本的Java：

java -version
java version "1.8.0_221"
Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)

而且我的项目没有错误