05-springmvc简单入门

* 有问题可以参加Java技术交流群：839366464

* SpringMVC概述

* Spring web mvc和Struts2都属于Web层（控制层）的框架,它是Spring框架的一部分,我们可以从Spring的整体结构中看得出来：不需要和spring整合
* Web 三层架构
Web层服务层数据层
C
V
* MVC 架构
M V C

* Hello SpringMVC

* 创建maven工程，骨架webapp

* 添加依赖

<dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>

* 在web.xml配置DispatcherServlet(SpringMVC 的前端控制器)

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Hello SpringMVC</display-name>
  <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>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
</web-app>

* 自定Controller

public class HelloController implements Controller {
    @Override
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView modelAndView=new ModelAndView();
        modelAndView.addObject("name","xiaohei");
        modelAndView.setViewName("hello.jsp");
        return modelAndView;
    }
}

* 配置springmvc.xml 文件

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
	   http://www.springframework.org/schema/tx/spring-tx.xsd">
    <bean name="/hello.do" class="springmvc.controller.HelloController"/>     
</beans>

* 页面

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>Hello SpringMVC</title>
</head>
<body>
    <h1>HelloWorld ${name}</h1>
    <h1>123</h1>
    <h1>345</h1>
</body>
</html>

* 在浏览器访问

* 防止外界访问jsp页面

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsps/"></property>
<property name="suffix" value=".jsp"></property>
</bean>

public class HelloController implements Controller {
    @Override
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView modelAndView=new ModelAndView();
        modelAndView.addObject("name","xiaohei");
        modelAndView.setViewName("hello");
        return modelAndView;
    }
}

* 注解的开发形式

@Controller
public class TestController {

    @RequestMapping("/test1.do")
    public ModelAndView test1(){
        ModelAndView modelAndView=new ModelAndView();
        modelAndView.addObject("name","xiaobai");
        modelAndView.setViewName("hello");
        return modelAndView;
    }
}

在springmvc.xml 配置扫描包
<context:component-scan base-package="springmvc"/>

05-springmvc简单入门

猜你喜欢