0
我是spark的新开发者,现在我被一个问题阻止了。 我是实现freemarker作为网页模板。 修改.ftl文件时不像其他框架,您不需要重新启动服务器。 但现在在我的本地它必须重新启动服务器,如果我想看到更改。 以下是代码。sparkjava(java webframe)如何自动刷新页面
public class SparkServer {
public static void main(String[] args){
get("/hello",(request,response) ->{
Map root = new HashMap();
root.put("user", "xiekakaban");
Map product = new HashMap();
product.put("name","Pringles");
product.put("price",13.2);
root.put("product",product);
return new ModelAndView(root,"test.ftl");
},FreeMarkerEngine.getInstance());
}
}
public class FreeMarkerEngine extends TemplateEngine{
private static FreeMarkerEngine freeMarkerEngine;
private Configuration freeConfig;
private FreeMarkerEngine() throws IOException{
freeConfig = new Configuration();
freeConfig.setDirectoryForTemplateLoading(StringUtil.getResourceFile("templates"));
freeConfig.setTemplateUpdateDelay(1);
}
public static FreeMarkerEngine getInstance(){
if(freeMarkerEngine == null){
try {
freeMarkerEngine = new FreeMarkerEngine();
} catch (IOException e) {
e.printStackTrace();
System.exit(0);
}
}
return freeMarkerEngine;
}
@Override
public String render(ModelAndView modelAndView) {
StringWriter stringWriter = new StringWriter();
try {
freeConfig.clearTemplateCache();
freeConfig.clearSharedVariables();
freeConfig.clearEncodingMap();
Template template = freeConfig.getTemplate(modelAndView.getViewName());
template.process(modelAndView.getModel(), stringWriter);
System.out.println(stringWriter.toString());
return stringWriter.toString();
} catch (IOException | TemplateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "Can not find the template:"+modelAndView.getViewName();
}
}
我`吨确定它是否是由缓存火花或freemarker.But我有明确的FreeMarker缓存。
任何人都可以帮到我.....