springmvc freemarker 全局变量的三种配置方式

方法一 直接在spring-servlet.xml 中进行配置

    <bean id="freemarkerConfiguration" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
        <property name="location" value="classpath:freemarker.properties" />
    </bean>
    <bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
        <property name="templateLoaderPaths" value="/templates" />
        <property name="defaultEncoding" value="utf-8" />
        <property name="freemarkerSettings">
            <props>
                <prop key="template_update_delay">0</prop>
                <prop key="url_escaping_charset">UTF-8</prop>
                <prop key="locale">UTF-8</prop>
                <prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop>
                <prop key="date_format">yyyy-MM-dd</prop>
                <prop key="number_format">#.##</prop>
                <prop key="classic_compatible">true</prop>
            </props>
        </property>
        <property name="freemarkerVariables">
            <map>
                <entry key="BasePath" value="${base.path}" />
                <entry key="IncPath" value="${web.root}" />
                <entry key="xml_escape" value-ref="fmXmlEscape" />
            </map>
        </property>
    </bean>

    <bean id="fmXmlEscape" class="freemarker.template.utility.XmlEscape" />    

freemarker.properties

base.path=localhost:8080
web.root=www.springmvc.com

 

 

方法二（推荐）自定义一个视图，继承FreeMarkerView

public class MyFreeMarkerView extends FreeMarkerView {
    private static final String CONTEXT_PATH = "base";

    @Override
    protected void exposeHelpers(Map<String, Object> model, HttpServletRequest request) throws Exception {
        model.put(CONTEXT_PATH, request.getContextPath());
        model.put("cxb", "caoxiaobo");
        super.exposeHelpers(model, request);
    }
}

    <!--视图解释器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
        <property name="exposeRequestAttributes" value="true" />
        <property name="exposeSessionAttributes" value="true" />
　　　　　<!-- 自定义视图 -->
　　　　  <property name="viewClass">
            <value>com.view.freemarker.MyFreeMarkerView</value>
        </property>
        <property name="cache" value="true" />
        <!-- <property name="prefix" value="/" />  -->
        <property name="suffix" value=".ftl"/>
        <property name="contentType" value="text/html;charset=UTF-8"></property>
    </bean>  

 

方法三 自定义一个 FreeMarkerConfigurer 继承 FreeMarkerConfigurationFactory 并实现FreeMarkerConfig, InitializingBean, ResourceLoaderAware, ServletContextAware

// 这里其实就是完整的替换了FreeMarkerConfigurer
public class MyFreeMarkerConfigurer extends FreeMarkerConfigurationFactory
        implements FreeMarkerConfig, InitializingBean, ResourceLoaderAware, ServletContextAware {
    private Configuration configuration;

    private TaglibFactory taglibFactory;

    @Override
    public void afterPropertiesSet() throws IOException, TemplateException {
        if (this.configuration == null) {
            this.configuration = createConfiguration();
        }
        SimpleHash model = new SimpleHash();
        model.put("baseUrl", "www.springmvc.com");
        this.configuration.setAllSharedVariables(model);
    }

    // ... 省略很多方法
}

    <bean id="freemarkerConfig" class="com.view.freemarker.MyFreeMarkerConfigurer">
        <property name="templateLoaderPath" value="/" />
        <property name="freemarkerSettings">
            <props>
                <prop key="locale">zh_CN</prop>
                <prop key="template_update_delay">0</prop>
                <prop key="default_encoding">UTF-8</prop>
                <prop key="number_format">0.##########</prop>
                <prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop>
                <prop key="classic_compatible">true</prop>
                <prop key="template_exception_handler">ignore</prop>
            </props>
        </property>
    </bean>