使用带弹簧的速度工具3.0.3

默认情况下,弹簧的速度支持非常过时。我延长 VelocityView 从Spring和Override类 createVelocityContext 我自己初始化工具的方法。 Here 它是如何看待结局的。

我用一种简单一点的方法。由于缺乏配置文档和示例,我也无法强制使用Velocity工具。我刚得到了velocity-generic-tools-2.0.jar,并在视图解析器中做了一些更改:

<bean id="velocityViewResolver" 
    class="org.springframework.web.servlet.view.velocity.VelocityViewResolver">
    <property name="order" value="1"/>
    <property name="prefix" value="/WEB-INF/vm/"/>
    <property name="suffix" value=".vm"/>

    <property name="exposeSpringMacroHelpers" value="true"/>
    <property name="contentType" value="text/html;charset=UTF-8"/>
    <property name="attributesMap">
        <map>
            <!--Velocity Escape Tool-->
            <entry key="esc"><bean class="org.apache.velocity.tools.generic.EscapeTool"/></entry>
        </map>
    </property>        
</bean>

然后,在Velocity模板中,您可以像往常一样使用$esc.html($htmlcodevar)。这个解决方案非常简单,没有大量的配置和覆盖Spring类。

对于3.0.5,我使用了一个与SERG发布的类类似的类,唯一的修改是使用Spring没有使用的更新类(tail-through-velocitytoolboxview->servlettoolboxmanager(在createvelocitycontext中使用,我们已重写),这是不推荐使用的类,因此我将SERG答案中的initvelocitytoolcontext修改为:

private ToolContext getToolContext() throws IllegalStateException, IOException {
  if (toolContext == null) {
    XmlFactoryConfiguration factoryConfiguration = new XmlFactoryConfiguration("Default Tools");
    factoryConfiguration.read(getServletContext().getResourceAsStream(getToolboxConfigLocation()));
    ToolboxFactory factory = factoryConfiguration.createFactory();
    factory.configure(factoryConfiguration);
    toolContext = new ToolContext();
    for (String scope : Scope.values()) {
      toolContext.addToolbox(factory.createToolbox(scope));
    }
  }
  return toolContext;
}

我还必须更改创建VelocityContext的行,以明显地调用此方法。

我的豆子现在看起来像:

<bean id="viewResolver" class="org.springframework.web.servlet.view.velocity.VelocityLayoutViewResolver"
      p:cache="false"
      p:prefix=""
      p:suffix=".vm"
      p:layoutUrl="templates/main.vm"
      p:toolboxConfigLocation="/WEB-INF/velocity/velocity-toolbox.xml"
      p:viewClass="path.to.overriden.class.VelocityToolsLayoutView"
/>

受Scott和Serg回答的启发,下面是另一种不需要XML的方法: http://squirrel.pl/blog/2012/07/13/spring-velocity-tools-no-xml/

public class MyVelocityToolboxView extends VelocityView {
    @Override
    protected Context createVelocityContext(Map<String, Object> model,
            HttpServletRequest request, HttpServletResponse response) {
        ViewToolContext context = new ViewToolContext(getVelocityEngine(),
                request, response, getServletContext());

        ToolboxFactory factory = new ToolboxFactory();
        factory.configure(ConfigurationUtils.getVelocityView());

        for (String scope : Scope.values()) {
            context.addToolbox(factory.createToolbox(scope));
        }

        if (model != null) {
            for (Map.Entry<String, Object> entry : (Set<Map.Entry<String, Object>>) model
                    .entrySet()) {
                context.put(entry.getKey(), entry.getValue());
            }
        }
        return context;
    }
}

受以上所有答案的启发,这是我对 VelocityLayoutView 对于弹簧和速度工具2.0,增加了一些改进!

public class VelocityToolsView extends VelocityLayoutView {

    private static final String TOOL_MANAGER_KEY = ViewToolManager.class.getName();

    @Override
    protected Context createVelocityContext(
            Map<String, Object> model, HttpServletRequest request, HttpServletResponse response) {
        ServletContext application = getServletContext();

        // use a shared instance of ViewToolManager
        ViewToolManager toolManager = (ViewToolManager)application.getAttribute(TOOL_MANAGER_KEY);
        if(toolManager == null) {
            toolManager = createToolManager(getVelocityEngine(), getToolboxConfigLocation(), application);
            application.setAttribute(TOOL_MANAGER_KEY, toolManager);
        }

        ViewToolContext toolContext = toolManager.createContext(request, response);
        if(model != null) { toolContext.putAll(model); }

        return toolContext;
    }

    private ViewToolManager createToolManager(VelocityEngine velocity, String toolFile, ServletContext application) {
        ViewToolManager toolManager = new ViewToolManager(application, false, false);
        toolManager.setVelocityEngine(velocity);

        // generic & view tools config
        FactoryConfiguration config = ConfigurationUtils.getVelocityView();
        // user defined tools config
        if(toolFile != null) {
            FactoryConfiguration userConfig = ConfigurationUtils.load(application.getRealPath(toolFile));
            config.addConfiguration(userConfig);
        }
        toolManager.configure(config);

        return toolManager;
    }
}

我发现了 this variation 关于@serg的技术对我很有用。