SpringMVC-几种Controller介绍

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1.CommandController(命令控制器)

public class MyCommandController extends AbstractCommandController{MyCommandController(){this.setCommandClass(Person.class);this.setCommandName("person");}@Overrideprotected ModelAndView handle(HttpServletRequest req,HttpServletResponse resp, Object o, BindException arg3)throws Exception {Person p = (Person) o;System.out.println(p);return new ModelAndView("command");}}

* 需要继承AbstractCommandController类，并重写handle方法

* 通过构造方法注册命令类和命令名称，如：

public MyCommandController(){

//注册命令类

this.setCommandClass(Person.class);

//命令名称

this.setCommandName("person");

}

2 FormController(表单控制器)

public class MyFormController extends SimpleFormController{MyFormController(){this.setCommandClass(Person.class);this.setCommandName("person");}@Overrideprotected void doSubmitAction(Object command) throws Exception {Person p = (Person) command;System.out.println(p);System.out.println("MyFormController.doSubmitAction()");super.doSubmitAction(command);}}

* 需要继承SimpleFormController类，并重写doSubmitAction方法

* 通过构造方法注册命令类和命令名称，如：

public MyFormController(){

this.setCommandClass(Person.class);

this.setCommandName("person");

}

* 在spring配置文件中对表单控制器进行配置，如：

</bean>

*其中successView和formView都是固定写法

*第一次访问的时候是get方式，所以访问的是persomForm.jsp 第二次访问的时候是post方式，所以访问的是success.jsp

3 WizardFormController(向导表单控制器)

public class MyWizardFormController extends AbstractWizardFormController{MyWizardFormController(){this.setCommandClass(Person.class);this.setCommandName("person");}@Overrideprotected ModelAndView processFinish(HttpServletRequest req,HttpServletResponse resp, Object o, BindException arg3)throws Exception {Person p = (Person) o;System.out.println(p);return new ModelAndView("success");}@Overrideprotected ModelAndView processCancel(HttpServletRequest request,HttpServletResponse response, Object command, BindException errors)throws Exception {return new ModelAndView("index");}}

* 需要继承AbstractWizardFormController类，并重写processFinish方法

*通过构造方法注册命令类和命令名称，如：

public MyWizardFormController(){

this.setCommandClass(Person.class);

this.setCommandName("person");

}

* 在spring配置文件中对向导表单控制器进行配置，如：

<list>

<value>wizard/1</value>

<value>wizard/2</value>

<value>wizard/3</value>

</list>

</property>

</bean>

1.jsp代码如下

<body>    <form action="<%=path %>/mywizardform.action" method="post">    id:<input type="text" name="id" value="${requestScope.person.id }"><br>    <input type="submit" name="_cancel" value="取消">    <input type="submit" name="_target1" value="下一步">    </form>  </body>

*数组下标是从0开始的，所以_target1代表的是第二个页面

*两个type都是submit类型

*数据时通过request域进行传输的

*value属性用于回显

*这里的value="${requestScope.person.id }中的person就是前面this.setCommandName("person")所设置的

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