SpringMVC配置和常用Controller方法

常用的映射处理器配置与常用Controller的方法

    <!--可以显示的定义HandleMapping,以bean的name来做映射处理器-->
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean> 
    <!--简单的HanndleMapping映射处理器-->
    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/hello.do">controllerId</prop>
            </props>
        </property>
    </bean>
    <bean class="org.com.controller.ControllerDemo" id="controllerId" ></bean>
    
    <!--控制器的类名映射处理器,注意访问时类名首字母小写.do-->
    <bean class="org.springframework.web.servlet.mvc.support.ControllerBeanNameHandlerMapping">
    </bean>
    <!--接收参数控制器,这里可以接收一个对象 -->
    <bean id="commController" name="/comm.do" class="org.com.controller.ControllerDemo">
        <property name="commanClass" value="org.com.controller.Person"></property>
    </bean>
    <!--表单控制器-->
    <bean id="formCointroller" class="org.com.controller.ControllerDemo" name="/controllerDemo2.do">
        <property name="commanClass" value="org.com.controller.Person"></property>
        <property name="formView" value=""></property>
        <property name="successView" value=""></property>
    </bean>
    

@InitBinder
public void binder(ServletRequestDataBinder binder) {
    //绑定时间类型的属性编辑器
    binder.registerCustomEditor(Date.class,new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));
}

Controoler方法

    /**
    *接收一个Person对象，前端页面传递过来的参数，对应Person的属性
    *
    */
    @RequestMapping(value = "/toPerson1",method = RequestMethod.POST)
    public String toPerson1(Person person) {
        Map<String,Object> map = new HashMap<String,Object>();
        map.put("person",map);
        return "index";
    }
    

    /**
     * 数据和视图一块返回
     * @param person
     * @return
     */
    @RequestMapping(value = "/toPerson3",method = RequestMethod.POST)
    public ModelAndView toPerson3(Person person) {
        Map<String,Object> map = new HashMap<String, Object>();
        map.put("person",person);
        //相当于request.setAttribute("person",person);
        //return "index";
        return new ModelAndView("index",map);
    }
    

    /**
     * 数据和视图是分离的,这样写最好
     * @param person
     * @param model
     * @return
     */
    @RequestMapping(value = "/toPerson4", method = RequestMethod.POST)
    public String toPerson4(Person person,Model model) {
        model.addAttribute("person",person);
        //相当于request.setAttribute("person",person);
        return "index";
    } 

    
    /**
     * 在参数中直接定义map,可以将数据封装成model
     * @param person
     * @param map
     * @return
     */
    @RequestMapping(value = "/toPerson5",method = RequestMethod.POST)
    public String toPerson5(Person person,Map<String,Object> map) {
        map.put("person",person);
        return "index";
    }

    /**
     * 在参数列表中定义HttpServletResponse，用来返回ajax的结果
     * @param person
     * @param response
     */
    @RequestMapping(value = "/toAjax.do",method = RequestMethod.POST)
    public void toAjax(Person person, HttpServletResponse response) {
        try {
            response.getWriter().write(person.getName());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 直接在参数列表定义PrintWriter返回ajax的结果，建议使用
     * @param person
     * @param out
     */
    @RequestMapping(value = "/toAjax1.do",method = RequestMethod.POST)
    public void toAjax1(Person person, PrintWriter out) {
        out.write(person.getName());
    }

    
    /**
     * 内部重定向,也叫做客户端重定向,浏览器的地址栏会发生变化,不需要namespace命名空间
     * @return
     */
    @RequestMapping(value = "/redirectAjax.do")
    public String redirectAjax() {
        return "redirect:ajax.do";
    }

    /**
     * Controller之间的重定向,必须加上命名空间,也必须加上/表示退回到项目的根路径,如果没有加上的话,则会自动追加
     * @return
     */
    @RequestMapping(value = "redirectAjax1.do")
    public String redirectAjax1() {
        return "redirect:/text1/text1.do";
    }