属性方法名称解析器(Properties Method Name Resolver)
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2023-12-01
以下示例说明如何使用Spring Web MVC框架使用Multi Action Controller的Properties Method Name Resolver方法。 MultiActionController类有助于分别在单个控制器中使用其方法映射多个URL。
package cn.xnip;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
public class UserController extends MultiActionController{
public ModelAndView home(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Home");
return model;
}
public ModelAndView add(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Add");
return model;
}
public ModelAndView remove(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Remove");
return model;
}
}
<bean class = "cn.xnip.UserController">
<property name = "methodNameResolver">
<bean class = "org.springframework.web.servlet.mvc.multiaction.PropertiesMethodNameResolver">
<property name = "mappings">
<props>
<prop key = "/user/home.htm">home</prop>
<prop key = "/user/add.htm">add</prop>
<prop key = "/user/remove.htm">update</prop>
</props>
</property>
</bean>
</property>
</bean>
例如,使用上面的配置,如果URI -
请求/user/home.htm,DispatcherServlet会将请求转发给UserController home()方法。
请求/user/add.htm,DispatcherServlet会将请求转发给UserController的add()方法。
请求/user/remove.htm,DispatcherServlet会将请求转发给UserController的remove()方法。
首先,让我们使用一个可用的Eclipse IDE,并考虑以下步骤,使用Spring Web Framework开发基于动态表单的Web应用程序。
步 | 描述 |
---|---|
1 | 在Spring MVC - Hello World章节中解释,在cn.xnip包下创建一个名为TestWeb的项目。 |
2 | 在cn.xnip包下创建Java类UserController。 |
3 | 在jsp子文件夹下创建一个视图文件user.jsp。 |
4 | 最后一步是创建源文件和配置文件的内容并导出应用程序,如下所述。 |
UserController.java)/h2>package cn.xnip;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
public class UserController extends MultiActionController{
public ModelAndView home(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Home");
return model;
}
public ModelAndView add(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Add");
return model;
}
public ModelAndView remove(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Remove");
return model;
}
}
package cn.xnip;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
public class UserController extends MultiActionController{
public ModelAndView home(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Home");
return model;
}
public ModelAndView add(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Add");
return model;
}
public ModelAndView remove(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView model = new ModelAndView("user");
model.addObject("message", "Remove");
return model;
}
}
TestWeb-servlet.xml
<beans xmlns = "http://www.springframework.org/schema/beans"
xmlns:context = "http://www.springframework.org/schema/context"
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
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">
<bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name = "prefix" value = "/WEB-INF/jsp/"/>
<property name = "suffix" value = ".jsp"/>
</bean>
<bean class = "org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">
<property name = "caseSensitive" value = "true" />
</bean>
<bean class = "cn.xnip.UserController">
<property name = "methodNameResolver">
<bean class = "org.springframework.web.servlet.mvc.multiaction.PropertiesMethodNameResolver">
<property name = "mappings">
<props>
<prop key = "/user/home.htm">home</prop>
<prop key = "/user/add.htm">add</prop>
<prop key = "/user/remove.htm">update</prop>
</props>
</property>
</bean>
</property>
</bean>
</beans>
user.jsp
<%@ page contentType = "text/html; charset = UTF-8" %>
<html>
<head>
<title>Hello World</title>
</head>
<body>
<h2>${message}</h2>
</body>
</html>
完成创建源文件和配置文件后,导出应用程序。 右键单击您的应用程序,使用Export → WAR File选项并将TestWeb.war文件保存在Tomcat的webapps文件夹中。
现在,启动Tomcat服务器并确保您可以使用标准浏览器从webapps文件夹访问其他网页。 现在,尝试一个URL - http://localhost:8080/TestWeb/user/add.htm ,如果Spring Web Application的一切正常,我们将看到以下屏幕。