public void configConstant(Constants me) {

loadPropertyFile("application.properties");

if (isDevMode()) {

try {

Prop prop = PropKit.use("application-dev.properties");

Set<String> devPropNames = prop.getProperties().stringPropertyNames();

for (String devPropName : devPropNames) {

PropKit.getProp().getProperties().put(devPropName, prop.get(devPropName));

}

PropKit.useless("application-dev.properties");

} catch (Exception e) {

System.err.println("未能加载开发配置文件：application-dev.properties");

}

}

me.setDevMode(isDevMode());

me.setEncoding("UTF-8");

me.setViewType(ViewType.FREE_MARKER);

me.setViewExtension(".ftl");

me.setInjectDependency(true);

me.setInjectSuperClass(true);

}

在eclipse部署在tomcat启动，有如下报错： java.lang.NoSuchMethodError: com.jfinal.config.Constants.setViewExtension(Ljava/lang/String;)V。反正一切新版本的改动启动时都会报错，
jar包添加的是jfinal4.5，项目和tomcat都clean过了，但启动还是会报错，泪崩求指教。