SpringMVC入门案例（二）

SpringMVC入门案例（注解）

使用普遍的方式@Controller主耳机形式

入门案例：

这里我将采用最简单的配置进行springmvc开发

步骤：

web.xml配置前端控制器

springmvc.xml加载springmvc配置文件

在配置文件中配置注解扫描

在Controller上方添加@Controller注解

访问页面

文档结构：

C:.
│  pom.xml
└─src
    ├─main
    │  ├─java
    │  │  └─com
    │  │      └─lifeibai
    │  │          └─web
    │  │              └─controller
    │  │                      HelloController.java ---Controller
    │  │
    │  ├─resources
    │  │      spring-mvc.xml---这里只需要配置Spring注解扫描即可
    │  │
    │  └─webapp
    │      │  index.jsp
    │      │
    │      └─WEB-INF
    │              web.xml---配置前端控制器和配置springmvc的配置文件位置
    │
    └─test
        └─java

pom.xml

?xml version="1.0" encoding="UTF-8"?
project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    modelVersion4.0.0/modelVersion
    groupIdcom.lifeibai.springmvc/groupId
    artifactIdspringmvc_demo_002/artifactId
    version1.0-SNAPSHOT/version
packagingwar/packaging
    dependencies
        !--jsp标签库--
        dependency
            groupIdjstl/groupId
            artifactIdjstl/artifactId
            version1.2/version
        /dependency
        !--日志管理--
        dependency
            groupIdcommons-logging/groupId
            artifactIdcommons-logging/artifactId
            version1.2/version
        /dependency
        !--aop联盟--
        dependency
            groupIdaopalliance/groupId
            artifactIdaopalliance/artifactId
            version1.0/version
        /dependency
        !--核心--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-core/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--aspects--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-aspects/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--aop--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-aop/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--tx事务--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-tx/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--容器管理--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-beans/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--context  好像跟扫描包有关系--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-context/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--表达式语言--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-expression/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--spring web下的工具包--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-web/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--spring mvc--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-webmvc/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--测试包--
        dependency
            groupIdjunit/groupId
            artifactIdjunit/artifactId
            version4.12/version
        /dependency
        !--spring整合测试--
        dependency
            groupIdorg.springframework/groupId
            artifactIdspring-test/artifactId
            version4.2.8.RELEASE/version
        /dependency
        !--ServletAPI编译时期--
        dependency
            groupIdjavax.servlet/groupId
            artifactIdservlet-api/artifactId
            version2.5/version
            scopeprovided/scope
        /dependency
    /dependencies
    build
        plugins
            plugin
                groupIdorg.apache.tomcat.maven/groupId
                artifactIdtomcat7-maven-plugin/artifactId
                version2.2/version
            /plugin
        /plugins
    /build
/project

web.xml

?xml version="1.0" encoding="UTF-8"?
web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5"
    servlet
        servlet-nameaction/servlet-name
        servlet-classorg.springframework.web.servlet.DispatcherServlet/servlet-class
        init-param
            param-namecontextConfigLocation/param-name
            param-valueclasspath:spring-mvc.xml/param-value
        /init-param
        load-on-startup1/load-on-startup
    /servlet
    servlet-mapping
        servlet-nameaction/servlet-name
        url-pattern*.do/url-pattern
    /servlet-mapping
/web-app

spring-mvc.xml

?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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"
    context:component-scan base-package="com.lifeibai"/
/beans

HelloController.java

package com.lifeibai.web.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
 * Author:Alan
 *
 * @Date: 2018-05-21  21:38:14
 */
@Controller
public class HelloController {
    @RequestMapping("hi")
    public String hi(){
        return "index.jsp";
    }
}

index.jsp

%@ page contentType="text/html;charset=UTF-8" language="java" %
html
head
    titleTitle/title
/head
body
h1Hello Spring MVC/h1
/body
/html

测试结果

http://localhost:8080/springmvc_demo_002/hi.do

是不是感觉超简单！

文章如有错误，请您一定指出，感谢之至！
如果你有不同的见解，欢迎留言，或者加我QQ986320270
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