spring-mvc-1

一. SpringMVC的基本搭建

引入pom文件

	<dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.6.RELEASE</version>
        </dependency>
    </dependencies>

配置spring的注解扫描

<!--添加注解扫描-->
<context:component-scan base-package="com.jiang"></context:component-scan>

web.xml中配置前端控制器

<!--配置前端控制器-->
<servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<!-- /:除了.jsp请求，其他都拦截
         *：所有请求都拦截-->
<servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

二. SpringMVC请求/响应处理

web.xml

<!--get请求的中文乱码解决方式：在tomcat的conf目录下的servlet.xml
    <Connector port="8080" protocol="HTTP/1.1"
       connectionTimeout="20000"
       redirectPort="8443" URIEncoding="UTF-8" />-->
    <!--post请求的中文乱码解决方式-->
    <!--配置编码过滤器 CharacterEncodingFilter 解决中文POST乱码问题 一定要写在所有过滤器前面-->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <!--encoding 编码格式-->
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <!-- 同时开启请求和响应的编码设置-->
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <!--配置拦截哪些请求进行过滤-->
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <!--拦截规则-->
        <!--<url-pattern></url-pattern>  根据url请求进行匹配  *
            <servlet-name>  具体制定过滤哪个servlet
        -->
        <servlet-name>springmvc</servlet-name>
<!--        <url-pattern>/*</url-pattern>-->
    </filter-mapping>

    <!--处理HTML不支持rest中PUT和DELETE -->
    <filter>
        <filter-name>methodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>methodFilter</filter-name>
        <servlet-name>springmvc</servlet-name>
    </filter-mapping>

spring.xml

 <!--
    此配置表示 我们自己配置的请求由controller来处理，但是不能请求的处理交由tomcat来处理
    静态资源可以访问，但是动态请求无法访问
    -->
    <mvc:default-servlet-handler/>
    <!--保证静态资源和动态请求都能够访问-->
    <mvc:annotation-driven></mvc:annotation-driven>
    <!--
    将映射的地址直接指向静态资源文件夹，springmvc将不会将此映射作为handler-->
    <!--<mvc:resources mapping="/images/**" location="/images/"/>-->

<!--默认视图解析器 -  配上前缀和后缀  简化 逻辑视图名称-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" name="viewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

	<!--视图控制器（立即访问） path 需要映射的路径   view-name对应的视图名称-->
    <mvc:view-controller path="/" view-name="index"></mvc:view-controller>
    <mvc:view-controller path="/main" view-name="param"></mvc:view-controller>

jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>param测试</title>
</head>
<body>
<a>简单参数测试</a>
<form action="${pageContext.request.contextPath}/user" method="post">
    姓名：<input type="text" name="name"/>
    <input type="submit" value="提交">
</form>

<h2>复杂参数测试</h2>
<form action="${pageContext.request.contextPath}/param?id=1" method="post">
    姓名：<input type="text" name="name"/><p></p>
    爱好：<input type="checkbox" name="hobbies[0]" value="打篮球"/>打篮球
    <input type="checkbox" name="hobbies[1]" value="读书"/>读书
    <input type="checkbox" name="hobbies[2]" value="编程"/>编程<p/>
    外号：<input type="checkbox" name="alias" value="小江"/>小江
    <input type="checkbox" name="alias" value="灿哥"/>灿哥
    <input type="checkbox" name="alias" value="阿灿"/>阿灿<p/>
    高中老师：<input type="checkbox" name="teachers['数学']" value="张灿明"/>张灿明
    <input type="checkbox" name="teachers['英语']" value="阙笑梅"/>阙笑梅
    <input type="checkbox" name="teachers[语文]" value="简金荣"/>简金荣<p/>
    理想女友：<input type="text" name="grilFriend.name"/>
    <input type="submit" value="提交"><p/>
</form>
<h2>rest风格测试</h2>
<a>GET</a>
<form action="${pageContext.request.contextPath}/rest/1" method="get">
    姓名：<input name="name" />
    <input type="submit" value="提交">
</form>
<a>POST</a>
<form action="${pageContext.request.contextPath}/rest/1" method="post">
    姓名：<input name="name" />
    <input type="submit" value="提交">
</form>
<a>PUT</a>
<form action="${pageContext.request.contextPath}/rest/1" method="post">
    <input type="hidden" value="put" name="_method">
    姓名：<input name="name" />
    <input type="submit" value="提交">
</form>
<a>DELETE</a>
<form action="${pageContext.request.contextPath}/rest/1" method="post">
    <input type="hidden" value="delete" name="_method">
    姓名：<input name="name" />
    <input type="submit" value="提交">
</form>

</body>
</html>

Controller

@Controller
public class PathController {
    @RequestMapping("/user")
    public String path01(@RequestParam(value = "name",required = false) String name){
        System.out.println(name);
        return "/index.jsp";
    }

    @RequestMapping("/param")
    public String getUser(@RequestParam("id") Integer id, User user){
        System.out.println(id);
        System.out.println(user);
        return "/index.jsp";
    }
    @RequestMapping(value = "/rest/{id}",method = RequestMethod.GET)
    public String getUser2(@PathVariable Integer id, User user, Map model){
        model.put("type","Map类型");
        System.out.println("查询用户");
        System.out.println(user);
        return "index";
    }
    @PostMapping("/rest/{id}")
    public String addUser(@PathVariable Integer id, User user, HttpServletRequest request){
        request.setAttribute("type","request类型");
        System.out.println("添加用户");
        System.out.println(user);
        return "index";
    }
    @PutMapping("/rest/{id}")
    public String updateUser(@PathVariable Integer id, User user, HttpSession session){
        session.setAttribute("type","HttpSession类型");
        System.out.println("更新用户");
        System.out.println(user);
        return "redirect:/";
    }
    @Autowired
    HttpSession session;
    @DeleteMapping("/rest/{id}")
    public String deleteUser(@PathVariable Integer id, User user){
        session.setAttribute("type","HttpSession类型2");
        System.out.println("删除用户");
        System.out.println(user);
        return "redirect:/";
    }

}

posted @ 2021-03-14 15:51 阿灿呀阅读(67) 评论(0) 收藏举报

刷新页面返回顶部

spring-mvc-1

一. SpringMVC的基本搭建

二. SpringMVC请求/响应处理

公告