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java之spring mvc之Controller配置的几种方式
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这篇主要讲解 controller配置的几种方式。
1. URL对应 Bean
如果要使用此类配置方式，需要在XML中做如下样式配置
<!-- 配置handlerMapping -->
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<!-- 配置Controller -->
<bean name="/hello.do" class="cn.sxt.controller.HelloController"/>
2. 为 URL 分配 Bean
使用一个统一配置集合，对各个 URL 对应的 Controller 做关系映射
<!-- 配置handlerMapping -->
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/hello.do">helloController</prop>
</props>
</property>
</bean>
<bean id="helloController" class="cn.sxt.controller.HelloController"></bean>
该配置可以使用通配符
3. URL 匹配 Bean
如果定义的 Controller 名称规范，也可以使用如下配置
将 hello*.do 交给 helloController 处理
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"></bean>
<bean id="helloController" class="cn.sxt.controller.HelloController"></bean>
4.使用注解进行开发
需要导入 aop.jar 包
Controller 的 开发：
/**
* @Controller 注解一个控制器 需要扫描
*/
@Controller
public class HelloController{
/**
* 注解请求的url
*/
@RequestMapping("/hello.do")
public ModelAndView hello(HttpServletRequest req){
System.out.println("使用注解进行开发:"+req.getRemoteHost());
ModelAndView mv = new ModelAndView("hello");
mv.addObject("msg", "使用注解开发Controller");
return mv;
}
}
配置文件
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 注解开发适配器 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
<!-- 配置视图解析器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<!-- 为响应的视图名称加上前缀 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 为响应的视图名称加上后缀 -->
<property name="suffix" value=".jsp"/>
</bean>
<!-- 扫描注解类 -->
<context:component-scan base-package="cn.sxt.controller"/>
</beans>
附录：
这里附上上面配置的完整配置信息
附一
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置handlerMapping -->
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<!-- 配置handlerAdapter -->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
<!-- 配置Controller -->
<bean name="/hello.do" class="cn.vincent.controller.HelloController"/>
<!-- 配置视图解析器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<!-- 为响应的视图名称加上前缀 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 为响应的视图名称加上后缀 -->
<property name="suffix" value=".jsp"/>
</bean>
</beans>
附二
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 配置handlerMapping -->
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/hello.do">helloController</prop>
</props>
</property>
</bean>
<bean id="helloController" class="cn.sxt.controller.HelloController"></bean>
<!-- 配置handlerAdapter -->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
<!-- 配置视图解析器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<!-- 为响应的视图名称加上前缀 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 为响应的视图名称加上后缀 -->
<property name="suffix" value=".jsp"/>
</bean>
</beans>
附三
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"></bean>
<bean id="helloController" class="cn.sxt.controller.HelloController"></bean>
<!-- 配置handlerAdapter -->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
<!-- 配置视图解析器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<!-- 为响应的视图名称加上前缀 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 为响应的视图名称加上后缀 -->
<property name="suffix" value=".jsp"/>
</bean>
</beans>
附四
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 注解开发适配器 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
<!-- 配置视图解析器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<!-- 为响应的视图名称加上前缀 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 为响应的视图名称加上后缀 -->
<property name="suffix" value=".jsp"/>
</bean>
<!-- 扫描注解类 -->
<context:component-scan base-package="cn.sxt.controller"/>
</beans>
