freemarker 静态类调用

freemarker 静态类调用

public class FreemarkerModelInterceptor implements HandlerInterceptor {

    private static final Logger logger = LoggerFactory.getLogger(FreemarkerModelInterceptor.class);

    private Map<String, String> utilClasses;

    private TemplateHashModel staticModels;

    public FreemarkerModelInterceptor() {
        BeansWrapperBuilder builder = new BeansWrapperBuilder(Configuration.VERSION_2_3_26);
        staticModels = builder.build().getStaticModels();
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws
            Exception {
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView
            modelAndView) throws Exception {
        if (modelAndView != null && utilClasses != null && !utilClasses.isEmpty()) {
            utilClasses.entrySet().stream().forEach(entry -> {
                try {
                    modelAndView.addObject(entry.getKey(), (TemplateHashModel) staticModels.get(entry.getValue()));
                } catch (TemplateModelException e) {
                    logger.error("添加freemarker工具类异常:" + entry.getValue(), e);
                }
            });
        }
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception
            ex) throws Exception {

    }

    public Map<String, String> getUtilClasses() {
        return utilClasses;
    }

    public void setUtilClasses(Map<String, String> utilClasses) {
        this.utilClasses = utilClasses;
    }
}

配置：
    <bean id="freemarkerModelInterceptor" class="com.jd.findsomeone.web.FreemarkerModelInterceptor">
        <property name="utilClasses">
            <map>
                <entry key="stringUtils" value="org.apache.commons.lang3.StringUtils"></entry>
            </map>
        </property>
    </bean>
            <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <ref bean="freemarkerModelInterceptor"/>
        </mvc:interceptor>