交互测试接口的简单实现 reflect（反射） + XStream-JAVA91知识库

交互测试接口的简单实现 reflect（反射） + XStream

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　　交互测试接口的简单实现

　　1.问题或者你已经习惯了写Hardcode JUnit Test Case。但这里有问题：l你写的代码要经过Java compiler才可运行，但实际的环境下不一定允许这样l很难用于交互测试与开发期的错误跟踪。不能要求你的交互测试环境总有一个Java IDE。

　　上述问题在Java Application的RMI接口测试和错误跟踪时就更明显。

　　2.解决方法要做交互测试与错误跟踪，要面对的情况是不可料的，故很难用Hardcode的静态语言Java去做。但我对动态语言（如BeanShell）也不大了解。但相对比较了解Java的反射机制与XStream(http: //xstream.codehaus.org/) 的从 XML 文本到 Java Object 的应用

　　Java的reflect（反射） + XStream的文本到Object instance：

public　class MethodArgPanel extends JPanel {

privatestaticfinallongserialVersionUID = 1L;
    private JScrollPane jScrollPane = null;
    private JTextArea argTextArea = null;

/**
     *Thisisthedefaultconstructor
     */
    public MethodArgPanel() {
        super();
        initialize();
    }

/**
     *Thismethodinitializesthis
     *
     *@returnvoid
     */
    privatevoid initialize() {
        this.setSize(246, 230);
        this.setLayout(new BorderLayout());
        this.add(getJScrollPane(), BorderLayout.CENTER);
    }

/**
     *ThismethodinitializesjScrollPane
     *
     *@returnjavax.Swing.JScrollPane
     */
    private JScrollPane getJScrollPane() {
        if (jScrollPane == null) {
            jScrollPane = new JScrollPane();
            jScrollPane.setViewportView(getArgTextArea());
        }
        returnjScrollPane;
    }

/**
     *ThismethodinitializesargTextArea
     *
     *@returnjavax.swing.JTextArea   
     */
    private JTextArea getArgTextArea() {
        if (argTextArea == null) {
            argTextArea = new JTextArea();
        }
        returnargTextArea;
    }

public String getText() {
        returnargTextArea.getText();
    }

} // @jve:decl-index=0:visual-constraint="10,10"

public　class MainFrame extends JFrame {

privatestaticfinallongserialVersionUID = 1L;

private JPanel jContentPane = null;

private JSPlitPane mainSplitPane = null;

private JSplitPane leftSplitPane = null;

private JPanel cmdPanel = null;

private JButton execButton = null;

private JScrollPane argsScrollPane = null;

private JPanel argsPanel = null;

private JScrollPane resultScrollPane = null;

private JTextArea resultTextArea = null;

private JScrollPane methodScrollPane = null;

private JList methodList = null;

private MethodArgPanel[] methodArgPanels;

private Object proxy;

/**
     *ThismethodinitializesmainSplitPane
     *
     *@returnjavax.swing.JSplitPane
     */
    private JSplitPane getMainSplitPane() {
        if (mainSplitPane == null) {
            mainSplitPane = new JSplitPane();
            mainSplitPane.setDividerLocation(200);
            mainSplitPane.setRightComponent(getLeftSplitPane());
            mainSplitPane.setLeftComponent(getMethodScrollPane());
        }
        returnmainSplitPane;
    }

/**
     *ThismethodinitializesleftSplitPane
     *
     *@returnjavax.swing.JSplitPane
     */
    private JSplitPane getLeftSplitPane() {
        if (leftSplitPane == null) {
            leftSplitPane = new JSplitPane();
            leftSplitPane.setOrientation(JSplitPane.VERTICAL_SPLIT);
            leftSplitPane.setDividerSize(8);
            leftSplitPane.setDividerLocation(400);
            leftSplitPane.setBottomComponent(getResultScrollPane());
            leftSplitPane.setTopComponent(getCmdPanel());
        }
        returnleftSplitPane;
    }

/**
     *ThismethodinitializescmdPanel
     *
     *@returnjavax.swing.JPanel
     */
    private JPanel getCmdPanel() {
        if (cmdPanel == null) {
            cmdPanel = new JPanel();
            cmdPanel.setLayout(new BorderLayout());
            cmdPanel.setPreferredSize(new Dimension(400, 400));
            cmdPanel.add(getExecButton(), BorderLayout.EAST);
            cmdPanel.add(getArgsScrollPane(), BorderLayout.CENTER);
        }
        returncmdPanel;
    }

/**
     *ThismethodinitializesexecButton
     *
     *@returnjavax.swing.JButton
     */
    private JButton getExecButton() {
        if (execButton == null) {
            execButton = new JButton();
            execButton.setText("Exec");
            execButton.addActionListener(new java.awt.event.ActionListener() {
                publicvoid actionPerformed(java.awt.event.ActionEvent e) {
                    MainFrame.this.onExec();
                }
            });
        }
        returnexecButton;
    }

/**
     *ThismethodinitializesargsScrollPane
     *
     *@returnjavax.swing.JScrollPane
     */
    private JScrollPane getArgsScrollPane() {
        if (argsScrollPane == null) {
            argsScrollPane = new JScrollPane();
            argsScrollPane.setPreferredSize(new Dimension(1, 400));
            argsScrollPane.setViewportView(getArgsPanel());
        }
        returnargsScrollPane;
    }

/**
     *ThismethodinitializesargsPanel
     *
     *@returnjavax.swing.JPanel
     */
    private JPanel getArgsPanel() {
        if (argsPanel == null) {
            GridLayout gridLayout = new GridLayout();
            gridLayout.setRows(1);
            argsPanel = new JPanel();
            argsPanel.setLayout(gridLayout);
        }
        returnargsPanel;
    }

/**
     *ThismethodinitializesresultScrollPane
     *
     *@returnjavax.swing.JScrollPane
     */
    private JScrollPane getResultScrollPane() {
        if (resultScrollPane == null) {
            resultScrollPane = new JScrollPane();
            resultScrollPane.setViewportView(getResultTextArea());
        }
        returnresultScrollPane;
    }

/**
     *ThismethodinitializesresultTextArea
     *
     *@returnjavax.swing.JTextArea
     */
    private JTextArea getResultTextArea() {
        if (resultTextArea == null) {
            resultTextArea = new JTextArea();
        }
        returnresultTextArea;
    }

/**
     *Thisisthedefaultconstructor
     */
    public MainFrame() {
        super();
        methodArgPanels = new MethodArgPanel[0];
        initialize();
    }

/**
     *Thismethodinitializesthis
     *
     *@returnvoid
     */
    privatevoid initialize() {
        this.setSize(792, 598);
        this.setContentPane(getJContentPane());
        this.setTitle("EdgeServer Simple Manager");
    }

/**
     *ThismethodinitializesjContentPane
     *
     *@returnjavax.swing.JPanel
     */
    private JPanel getJContentPane() {
        if (jContentPane == null) {
            jContentPane = new JPanel();
            jContentPane.setLayout(new BorderLayout());
            jContentPane.add(getMainSplitPane(), BorderLayout.CENTER);
        }
        returnjContentPane;
    }

/**
     *ThismethodinitializesmethodScrollPane
     *
     *@returnjavax.swing.JScrollPane
     */
    private JScrollPane getMethodScrollPane() {
        if (methodScrollPane == null) {
            methodScrollPane = new JScrollPane();
            methodScrollPane.setViewportView(getMethodList());
        }
        returnmethodScrollPane;
    }

/**
     *ThismethodinitializesmethodList
     *
     *@returnjavax.swing.JList
     */
    private JList getMethodList() {
        if (methodList == null) {
            methodList = new JList();
            methodList.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
                publicvoid valueChanged(javax.swing.event.ListSelectionEvent e) {
                    onMethodChanged();
                }
            });
        }
        returnmethodList;
    }

publicvoid setProxyObject(Object proxy) {
        this.proxy = proxy;
        //List all methods in <code>proxy</code>
        setMethods(proxy);
    }

privatevoid setMethods(Object proxy) {
        Method[] methods = proxy.getClass().getMethods();
        MyMethodInfo[] infos = new MyMethodInfo[methods.length];
        for (int i = 0; i < methods.length; i++) {
            infos[i] = new MyMethodInfo(methods[i]);
        }
        Arrays.sort(infos);
        methodList.setListData(infos);
    }

privatevoid onMethodChanged() {
        argsPanel.removeAll();
        MyMethodInfo mi = (MyMethodInfo) methodList.getSelectedValue();
        if (mi == null) {
            methodArgPanels = new MethodArgPanel[0];
            return;
        }
        int argQty = mi.method.getParameterTypes().length;
        methodArgPanels = new MethodArgPanel[argQty];
        for (int i = 1; i <= argQty; i++) {
            methodArgPanels[i - 1] = new MethodArgPanel();
            argsPanel.add(methodArgPanels[i - 1]);
        }
        argsPanel.repaint();
        argsPanel.revalidate();
    }

privatevoid onExec() {
        StringBuilder result = new StringBuilder();
        result.append("====================================n");

//get the method user selected
        MyMethodInfo mi = (MyMethodInfo) methodList.getSelectedValue();
        if (mi == null) {
            result.append("No method called");
            resultTextArea.setText(result.toString());
            return;
        }

Object[] args = new Object[mi.method.getParameterTypes().length];
        XStream xstream = new XStream(new DomDriver());
        try {
            //convert the arg objects from xml text
            for (int i = 0; i < this.methodArgPanels.length; i++) {
                args[i] = xstream.fromXML(methodArgPanels[i].getText());
            }
            //invoke the method
            Object invokeResult = mi.method.invoke(proxy, args);
            //convert the result to xml text
            result.append("Return val:n");
            result.append(xstream.toXML(invokeResult));

} catch(Throwable e) {
            //Exception handle
            StringWriter sw = new StringWriter();
            PrintWriter printWriter = new PrintWriter(sw);
            e.printStackTrace(printWriter);
            result.append("Cache Exception:n");
            result.append(sw);
            printWriter.close();
            e.printStackTrace();
        }
        //show the invoke result in UI
        resultTextArea.setText(result.toString());
    }

}