java - 如何创建一个只有文本名称的类的数组？

Question

我目前正在创建一个库，旨在查看一堆字符串并使用它们创建窗口。目前，只有几行代码和一个巨大的配置文件会引发大量的窗口和东西。我将其设置为读取一些字符串并从中加载类，以获取方法的参数。这是执行此操作的方法:

    private Class<?> getClass(String classname){
        switch(classname){//Check for some primitive type references, since they don't work in the below area
            case "int":
                return int.class;
            case "double":
                return double.class;
            case "boolean":
                return boolean.class;
            case "long":
                return long.class;
            case "short":
                return short.class;
        }
        Class<?> value = null;
        try{
            value = Config.class.getClassLoader().loadClass(classname);
        }catch(ClassNotFoundException ex){
            Error.error(ErrorLevel.severe, "Could not find class- "+classname, ex, ErrorCatagory.classFinding);//A custom error handling system
        }
        return value;//Return the class found from the name
    }

它在普通类(class)上工作得很好。例如，如果我将 java.lang.String 放入其中，它会将 String 类吐回给我。如果我输入 javax.swing.JTextField，它会向我返回正确的类。但是，如果我将 java.lang.String[] 放入其中以请求一个字符串数组，它就会崩溃，如下所示:

    Warning in catagory code- message = Could not find suitable instance for method- Expected JTextComponent but found JTextField!
    Severe error in catagory classFinding
    May 16, 2012 11:02:35 AM ErrorAdapter severeError
    SEVERE: Could not find class- java.lang.String[]
    java.lang.ClassNotFoundException: java.lang.String[]
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
        at Config.getClass(Config.java:389)
        at Config.getClasses(Config.java:398)
        at Config.methodCall(Config.java:492)
        at Config.call(Config.java:415)
        at Config.chainCall(Config.java:439)
        at Config.call(Config.java:409)
        at main.action(main.java:122)
        at main$1$5.actionPerformed(main.java:63)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
        at java.awt.Component.processMouseEvent(Component.java:6505)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
        at java.awt.Component.processEvent(Component.java:6270)
        at java.awt.Container.processEvent(Container.java:2229)
        at java.awt.Component.dispatchEventImpl(Component.java:4861)
        at java.awt.Container.dispatchEventImpl(Container.java:2287)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
        at java.awt.Container.dispatchEventImpl(Container.java:2273)
        at java.awt.Window.dispatchEventImpl(Window.java:2713)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
        at java.awt.EventQueue.access$000(EventQueue.java:101)
        at java.awt.EventQueue$3.run(EventQueue.java:666)
        at java.awt.EventQueue$3.run(EventQueue.java:664)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
        at java.awt.EventQueue$4.run(EventQueue.java:680)
        at java.awt.EventQueue$4.run(EventQueue.java:678)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

第一行 - 以“Warning”开头的行 - 是因为如果我尝试在 JTextField.class 上使用 Class.getDeclaredMethod() 来获取那里的 getText() 方法，它会崩溃。剩下的就是崩溃报告。

有没有一种方法可以解决这个问题并使其适用于任何类/数组深度(因此它适用于 java.lang.String[]、javax.swing.JTextField[][][]、和 int[][] 没有对它们中的任何一个进行硬编码)？

另外，附带说明一下，是否有更好的方法来获取基于字符串的基本类型的类？

Answer 1

你试过吗:

Class.forName("[Ljava.lang.String;"); for an array of Strings?

http://docs.oracle.com/javase/6/docs/api/java/lang/Class.html#forName(java.lang.String ) http://java.dzone.com/news/obtaining-array-class-java-ref