我在研究时发现了你的问题:-)不确定我的解决方案是否是<good | bad | a hack | already exists>
或者是否有更好的方法,但它适用于我当前的项目。
In your myapp-servlet.xml
你可以扩展viewResolver视图类用你自己的实现:
myapp-servlet.xml
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:viewClass="com.my.app.view.JstlView"
p:prefix="/WEB-INF/views/"
p:suffix=".jsp"/>
通过重写 renderMergedOutputModel 你可以强制所有views真正成为一个模板,您可以在其中定义全局布局,然后简单地<jsp:include/>
你的部分。
JstlView.java
package com.my.app.view;
import java.util.*;
import org.springframework.web.servlet.view.InternalResourceView;
import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class JstlView extends InternalResourceView {
@Override
protected void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request, HttpServletResponse response) throws Exception {
String dispatcherPath = prepareForRendering(request, response);
// set original view being asked for as a request parameter
request.setAttribute("partial", dispatcherPath.substring(dispatcherPath.lastIndexOf("/") + 1);
// force everything to be template.jsp
RequestDispatcher rd = request.getRequestDispatcher("/WEB-INF/views/template.jsp");
rd.include(request, response);
}
}
如果你看春天的内部资源视图.java http://www.jarvana.com/jarvana/view/org/springframework/spring-webmvc/3.1.0.RELEASE/spring-webmvc-3.1.0.RELEASE-sources.jar!/org/springframework/web/servlet/view/InternalResourceView.java?format=ok在确定要使用的视图时,您将更好地了解 Spring 正在做什么。
模板.jsp
<!doctype html>
<html lang="en">
<head></head>
<body>
<header>
<jsp:include page="header.jsp"/>
</header>
<jsp:include page="${partial}"/>
<footer>
<jsp:include page="footer.jsp"/>
</footer>
</body>
</html>
如何使用EL获取JSP中的request/session/servletcontext属性? https://stackoverflow.com/q/3579172/637889帮助我获取属性值${partial}
out.
simple_partial.jsp
<p>I'm a partial!</p>
然后在控制器中返回simple_partial
view
App.java
package com.my.app.controller;
import org.springframework.stereotype.Controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@RequestMapping(value="/")
public class App{
@RequestMapping(method = RequestMethod.GET)
public String index() {
return "simple_partial";
}
}
它将被包裹template.jsp
并回应了出来。