注解开发
创建一个web工程，并导入jar
配置web.xml
<filter>
<filter-name>characterEncoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 默认加载方式
默认加载必须规范：
* 文件命名：servlet-name-servlet.xml====springmvc-servlet.xml
* 路径规范：必须在WEB-INF目录下面
-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
配置springmvc配置文件
<context:component-scan base-package="cn.itcast"></context:component-scan>
<!-- 配置注解处理器映射器
功能：寻找执行类Controller
-->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>
<!-- 配置注解处理器适配器
功能：调用controller方法，执行controller
-->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>
<!-- 配置sprigmvc视图解析器：解析逻辑试图
后台返回逻辑试图：index
视图解析器解析出真正物理视图：前缀+逻辑试图+后缀====/WEB-INF/jsps/index.jsp
-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsps/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
自定义Controller类
注解开发流程
RequestMapping
requestMapping(“hello”)
requestMapping(“/hello.do”)
requestMapping(value=”/hello.do”)
requestMapping(value=”/hello.do”,method=RequestMethod.GET)
requestMapping(value=”/hello.do”,method=RequestMethod.POST)
浏览器直接访问,a标签都是get请求
表单提交(指定post)，ajax指定post提交，post提交。
requestMapping(value=”/hello.do”,method={RequestMethod.POST, RequestMethod.GET})
RequestMaping根路径
@RequestMapping（”/user”）
UserController｛
requestMapping(“save”)
Save()
requestMapping(“update”)
Update{}
requestMapping(“find”)
Fiind()
｝
项目名/user/save.do
@RequestMapping（”/items”）
ItemsController｛
requestMapping(“save”)
Save()
requestMapping(“update”)
Update{}
requestMapping(“find”)
Fiind()
｝
项目名/items/save.do
自定义根路径
