springMvc8-springmvc常用注解代码

web.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
        <display-name>SpringMVC01</display-name>
     
        <!-- 处理中文乱码 -->
        <filter>
            <filter-name>encodingFilter</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>encodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
        <!-- SpringMVC控制器 -->
        <servlet>
            <servlet-name>dispatcherServlet</servlet-name>
            <!-- 主要就是DispatcherServlet这个servlet起到分发的作用，对请求进行控制分发 -->
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                <!-- 每个springmvc项目都要一个springmvc项目配置位置，下面配置springmvc配置文件的路径 -->
                <param-name>contextConfigLocation</param-name>
                <param-value>/WEB-INF/springMVC-servlet.xml</param-value>
            </init-param>
            <!-- 当容器启动时立即启动 -->
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>dispatcherServlet</servlet-name>
            <!-- 下面配置springmvc的过滤分发请求类型，可以是/ 或者*.action等 -->
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    </web-app>

springmvc-servlet

    <?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:context="http://www.springframework.org/schema/context"
           xmlns:mvc="http://www.springframework.org/schema/mvc"
           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-4.1.xsd
            http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
        <!-- 定义要扫描 controller的包-->
        <context:component-scan base-package="wormday.springmvc.helloworld" />
     
        <mvc:default-servlet-handler />
        <!-- 启动注解驱动 SpringMVC 功能 -->
        <mvc:annotation-driven />
     
        <!-- 配置视图解析器 如何把handler 方法返回值解析为实际的物理视图 -->
        <!--指定视图解析器-->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <!-- 视图的路径 -->
            <property name="prefix" value="/WEB-INF/"/>
            <!-- 视图名称后缀  -->
            <property name="suffix" value=".jsp"/>
        </bean>
     
    </beans>

HIcontroller类

    package wormday.springmvc.helloworld;
     
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model; // 这里导入了一个Model类
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
     
    @Controller
    @RequestMapping("/hi")
    public class HiController {
     
        @RequestMapping("/say")
        public String say(Model model) { // 参数中传入Model
            model.addAttribute("name","wormday"); // 指定Model的值
            model.addAttribute("url","http://www.cnblogs.com/wormday/p/8435617.html"); // 指定Model的值
            return "say";
        }
        @RequestMapping("/loginForm")
        public String loginForm(){
            return "login";
        }
        @RequestMapping("/hi")
        public String loginFor(){
            return "hi";
        }
     
        @RequestMapping(value = "/login",method = RequestMethod.POST)
        public String loginXS(){
           // System.out.println("执行登录");
            //System.out.println("username"+username);
            //System.out.println("password"+password);
            return "redirect:hi";
        }
    }

say.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
      <title>Title</title>
    </head>
    <body>
    hello world,${name}
    <br/>${url}</body>
    </html>
     
    复制代码

login.jsp

    <%--
      Created by IntelliJ IDEA.
      User: geyao
      Date: 2019/11/6
      Time: 19:57
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    <form action="hi" method="post">
        <label for="username">用户名<input type="text" id="username" name="username"></label>
        <label for="password">密码<input type="text" id="password" name="password"></label>
        <button>登录</button>
    </form>
    </body>
    </html>

hi.jsp

    <%--
      Created by IntelliJ IDEA.
      User: geyao
      Date: 2019/11/6
      Time: 20:17
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    我是歌谣，登录成功
    </body>
    </html>

运行结果