我正在尝试在带有注释的 Spring MVC 中实现动态复选框列表。所以，我尝试了这个：
在 home.jsp 中：
<c:forEach items="${categories}" var="cat">
<tr>
<td><form:checkbox path="catrgo" value="${category}"
label="${cat.categoryId}" /></td>
<td><c:out value="${cat.category}" /></td>
</tr>
</c:forEach>
在 HomeController 中：@Controller @RequestMapping(value = "/home") public class HomeController {
@RequestMapping(method = RequestMethod.GET)
public String showForm() {
FeedDomain feedDomain = new FeedDomain();
System.out.println("Called");
CategoryService categoryService = new CategoryService();
try {
List<CategoryDomain> categoryDomainList = new ArrayList<CategoryDomain>();
CategoryDomain categoryDomain = new CategoryDomain();
categoryDomain.setCategory("aaa");
categoryDomain.setCategoryId(11111);
System.out.println("Size is " + categoryDomainList.size());
} catch (Exception exception) {
}
return "home";
}
现在我将使用标签从 index.jsp 转到 home.jsp，但问题是 showForm 方法没有被调用。可能是什么原因？
我在完整流程下方发布：
这是welcome.jsp，我从这里调用home.jsp
<body>
<a href="home.jsp" class="btn btn-success btn-large disabled">Get
Us Feeds Now</a>
</body>
现在我简化了正在渲染的 home.jsp：
<body>
<br />
<span class="badge badge-info"><h1>Chat Booster</h1></span>
<div class="leftHeader">
<h1>
<small>Subtext for header</small>
</h1>
</div>
<br></br>
<br></br>
</body>
主页控制器是：
@Controller
@RequestMapping(value = "/home")
public class HomeController {
@RequestMapping(method = RequestMethod.GET)
public String showForm() {
FeedDomain feedDomain = new FeedDomain();
// model.addAttribute("feedDomain", feedDomain);
System.out.println("Called");
CategoryService categoryService = new CategoryService();
return "home";
}
网页.xml：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>HelloWorldExampleWithSpring3MVCInEclipse</display-name>
<servlet>
<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet- class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/app-config.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
应用程序配置.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:component-scan base-package="com.controller" />
<!-- Resolves view names to protected .jsp resources within the /WEB-INF/views
directory -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
我的 jsp 页面仅在 webcontent 文件夹中（不在 web-inf 中）。现在我稍后会寻找主要问题，但第一点是 showForm() 方法没有被调用，因为 sysouts 没有在控制台上打印任何东西。如果我将 home.jsp 作为应用程序的默认页面，则调用该方法，但不是通过给定的方法。任何人都可以对此发表评论吗？