目录
- HandlerMapping的常见种类
- BeanNameUrlHandlerMapping
- SimpleUrlHandlerMapping
- ControllerClassNameHandlerMapping
- 使用注解替代配置
HandlerMapping的常见种类
HandleMapping:处理映射器,可以理解为为请求的url查找对应的Controller类.
BeanNameUrlHandlerMapping
根据bean标签的名称找到对应的Controller类。
SimpleUrlHandlerMapping
根据bean的id查找对应的Controller类。
ControllerClassNameHandlerMapping
根据controller类的名字找到对应的Controller。
使用注解替代配置
引入指定jar
1.包扫描:扫描注解所在包
2.开启注解标签:Annotation
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
?????xmlns:mvc="http://www.springframework.org/schema/mvc"
?????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
?????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
??????? http://www.springframework.org/schema/mvc
??????? http://www.springframework.org/schema/mvc/spring-mvc.xsd">
?????<!-- 包扫描 -->
?????<context:component-scan base-package="com.hw.lb.controller.annotation"></context:component-scan>
?????<!-- 启动注解器 -->
?????<mvc:annotation-driven/>????
?????<!-- 配置视图解析器 -->
? ????<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
? ?????????<property name="prefix" value="/WEB-INF/view/"/>
? ?????????<property name="suffix" value=".jsp"/>
? ????</bean>
</beans>
3.创建Controller类(在类中添加Controller注解,可以创建多个方法)
package com.hw.lb.controller.annotation;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class FirstAnnotation {
[email protected]("/list.do")
?????public String list() {
???????????System.out.println("查询所有");
???????????return "login";
?????}
}
原文地址:https://www.cnblogs.com/DT-Demo/p/11455777.html
时间: 2024-11-11 19:27:26