spring - 属性值未在速度模板上打印

Question

我正在使用带有 Velocity 的 Spring，我尝试在我的速度模板上打印一些文字，但它不起作用。这是我的模板，exporteComplete.vm：

${savePath}

这是代码：

@Override
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {

    ....
    boolean success = processor.exportCourse(courseId, exportPlayer, exportAssets, exportJson);

    ...
    if (success) {
        log.debug("Export Success");
        return new ModelAndView("templateScene/exportComplete");
    } else {
        log.debug("Export Failure");
        return new ModelAndView("templateScene/exportError", "context", context);
    }

}

这是方法：

public boolean exportCourse(String courseId, boolean exportPlayer, boolean exportAssets, boolean exportJson) {


    context = new HashMap<Object, Object>();
    context.put("savePath", "save path complete");
    VelocityEngineUtils.mergeTemplateIntoString(engine, "templateScene/exportComplete.vm", "UTF-8", context);

    boolean test = true;

    if (test) {     
        return true;        
    }
}

${savePath}当视图返回exportComplete.vm时，我得到了结果。

为什么视图返回时不打印值？

编辑 - - - - - - - - - - - - - - - - - - - - - - - - - ------------

这是工作代码。

@Override
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {

    ....
    context = new HashMap<Object, Object>();
    boolean success = processor.exportCourse(courseId, exportPlayer, exportAssets, exportJson, context);
    if (success) {
        log.debug("Export Success");
        return new ModelAndView("templateScene/exportComplete", "context", context);

    } else {
        log.debug("Export Failure");
        return new ModelAndView("templateScene/exportError", "context", context);
    }

}

这是方法

public boolean exportCourse(String courseId, boolean exportPlayer, boolean exportAssets, boolean exportJson, Map<Object, Object> myContext) {

    ...
    if (myContext != null) {

        myContext.put("savePath", "Save Path Complete");
        return true;

    }

}

这是模板

${context.savePath}

Answer 1

savePath是context Map变量的属性。

作为访问它的正确方法是context.get("savePath")，而不是：

${savePath}

你应该使用：

${context.savePath}