1.前言
上篇博客着重说了一下SpringMVC中几种处理映射的方式,这篇博客来说一下SpringMVC中几种经常使用的控制器.
2.经常使用控制器
2.1 ParameterizableViewController(參数控制器)
<span style="font-size:18px;"><?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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "> <!-- 配置文件形式要配置的组建:Controller,handlermapping(有默认规则),viewResolver,interceptor --> <!-- 视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 配置从项目根文件夹到一端路径 --> <property name="prefix" value="/WEB-INF/jsp/" /> <!-- 文件后缀名称 --> <property name="suffix" value=".jsp" /> </bean> <!-- 使用简单url来映射 --> <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <props> <prop key="/hello1.do">TestController</prop> <prop key="/hello1.do">toLogin</prop> <prop key="/comm.do">command</prop> <prop key="/form.do">form</prop> </props> </property> </bean> <!-- 參数控制器,须要配置对应的URL来映射 --> <bean id="toLogin" class="org.springframework.web.servlet.mvc.ParameterizableViewController"> <!-- 配置你所要跳转到视图的名称 --> <!-- 要跳转的视图的名称 --> <property name="viewName" value="index"></property> </bean> </beans> </span>从上述代码中我们能够发现,參数控制器跟寻常的控制器差点儿相同,可是不能通过控制器名称来訪问到,由于參数控制器是唯一的.
2.2 AbstractCommandController(命令控制器)
<span style="font-size:18px;"><?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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "> <!-- 配置文件形式要配置的组建:Controller,handlermapping(有默认规则),viewResolver,interceptor --> <!-- 视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 配置从项目根文件夹到一端路径 --> <property name="prefix" value="/WEB-INF/jsp/" /> <!-- 文件后缀名称 --> <property name="suffix" value=".jsp" /> </bean> <!-- 使用简单url来映射 --> <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <props> <prop key="/hello1.do">TestController</prop> <prop key="/hello1.do">toLogin</prop> <prop key="/comm.do">command</prop> <prop key="/form.do">form</prop> </props> </property> </bean> <!-- 命令控制器信息,须要指定简单的URL来映射 --> <bean class="com.url.controller.commController" id="command"> <!-- 指定收集对象的类型 --> <property name="commandClass" value="com.url.Entity.person"></property> </bean> </beans> </span>接着来创建控制器信息,须要继承AbstractCommandController
<span style="font-size:18px;">package com.url.controller; import java.util.HashMap; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.validation.BindException; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.AbstractCommandController; import com.url.Entity.person; public class commController extends AbstractCommandController { // 通过命令控制器,每次在訪问的时候,都会创建一个新的Person对象 @Override protected ModelAndView handle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, BindException arg3) throws Exception { //使用命令控制器来收集数据而且创建指定的对象 person person=new person(); System.out.println(person); //把后台的数据和视图封装成ModelAndView Map<String, Object> map=new HashMap<String, Object>(); map.put("person", person); return new ModelAndView("index", map); } } </span>3.3 FormController(表单控制器)
通过表单控制器,能够把表单上的数据封装成为一个对象,在控制器中收集到.
<span style="font-size:18px;"><?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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "> <!-- 配置文件形式要配置的组建:Controller,handlermapping(有默认规则),viewResolver,interceptor --> <!-- 视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 配置从项目根文件夹到一端路径 --> <property name="prefix" value="/WEB-INF/jsp/" /> <!-- 文件后缀名称 --> <property name="suffix" value=".jsp" /> </bean> <!-- 使用简单url来映射 --> <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <props> <prop key="/hello1.do">TestController</prop> <prop key="/hello1.do">toLogin</prop> <prop key="/comm.do">command</prop> <prop key="/form.do">form</prop> </props> </property> </bean> <!-- 表单控制器,须要指定对应的URL来映射 --> <bean class="com.url.controller.FormController" id="form"> <!-- 指定收集对象的类型 --> <property name="commandClass" value="com.url.Entity.person"></property> <!-- 表单页面 --> <property name="formView" value="form"></property> <!-- 成功后的跳转页面操作 --> <property name="successView" value="success"></property> </bean> </beans> </span>接着创建控制器
<span style="font-size:18px;">package com.url.controller;
import org.springframework.web.servlet.mvc.SimpleFormController;
import com.url.Entity.person;
/*表单控制器*/
public class FormController extends SimpleFormController {
/*通过此方法来收集表单上的数据,并自己主动封装成一个对象*/
protected void doSubmitAction(Object command) throws Exception {
person p=(person)command;
System.out.println(p);
super.doSubmitAction(command);
}
}
</span>
3.小结
本篇博客解说了一下SpringMVC中经常使用的控制器,通过控制器能够与View进行对应的传值操作.
时间： 2024-10-10 23:17:33