Freemarker Debugger框架使用示例

Question

我已经开始使用断点等开发一个Freemarker，提供的框架基于java。到目前为止我让它停在一个断点上但是..。没什么。

除了源代码提供的调试/imp类之外，还有服务器部分和客户端部分的非常基本的示例设置吗？那会有很大帮助的。

这是我的服务器类：

class DebuggerServer {
    private final int port;
    private final String templateName1;
    private final Environment templateEnv;
    private boolean stop = false;

    public DebuggerServer(String templateName) throws IOException {
        System.setProperty("freemarker.debug.password", "hello");
        port = SecurityUtilities.getSystemProperty("freemarker.debug.port", Debugger.DEFAULT_PORT).intValue();
        System.setProperty("freemarker.debug.password", "hello");
        Configuration cfg = new Configuration();
        // Some other recommended settings:
        cfg.setIncompatibleImprovements(new Version(2, 3, 20));
        cfg.setDefaultEncoding("UTF-8");
        cfg.setLocale(Locale.US);
        cfg.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
        Template template = cfg.getTemplate(templateName);
        templateName1 = template.getName();
        System.out.println("Debugging " + templateName1);

        Map<String, Object> root = new HashMap();
        Writer consoleWriter = new OutputStreamWriter(System.out);

        templateEnv = new Environment(template, null, consoleWriter);
        DebuggerService.registerTemplate(template);
    }

    public void start() {
        new Thread(new Runnable() {
            @Override
            public void run() {
                startInternal();
            }
        }, "FreeMarker Debugger Server Acceptor").start();
    }

    private void startInternal() {
        boolean handled = false;

        while (!stop) {
            List breakPoints = DebuggerService.getBreakpoints(templateName1);
            for (int i = 0; i < breakPoints.size(); i++) {
                try {
                    Breakpoint bp = (Breakpoint) breakPoints.get(i);
                    handled = DebuggerService.suspendEnvironment(templateEnv, templateName1, bp.getLine());
                } catch (RemoteException e) {
                    System.err.println(e.getMessage());
                }
            }
        }
    }

    public void stop() {
        this.stop = true;
    }
}

这是客户端类：

class DebuggerClientHandler {
    private final Debugger client;
    private boolean stop = false;

    public DebuggerClientHandler(String templateName) throws IOException {
//        System.setProperty("freemarker.debug.password", "hello");
//        System.setProperty("java.rmi.server.hostname", "192.168.2.160");

        client = DebuggerClient.getDebugger(InetAddress.getByName("localhost"), Debugger.DEFAULT_PORT, "hello");
        client.addDebuggerListener(environmentSuspendedEvent -> {
            System.out.println("Break " + environmentSuspendedEvent.getName() + " at line " + environmentSuspendedEvent.getLine());
//            environmentSuspendedEvent.getEnvironment().resume();
        });

    }

    public void start() {
        new Thread(new Runnable() {
            @Override
            public void run() {
                startInternal();
            }
        }, "FreeMarker Debugger Server").start();
    }

    private void startInternal() {
        while (!stop) {
        }
    }

    public void stop() {
        this.stop = true;
    }

    public void addBreakPoint(String s, int i) throws RemoteException {
        Breakpoint bp = new Breakpoint(s, i);
        List breakpoints = client.getBreakpoints();
        client.addBreakpoint(bp);
    }
}

Answer 1

Liferay (https://github.com/liferay/liferay-ide)具有FreeMarker模板调试支持(https://issues.liferay.com/browse/IDE-976)，因此他们设法使用它。不过，我从未见过它的实际行动。除此之外，我不知道有什么地方使用调试API。