<!DOCTYPE html>
<html lang='en'>
<head>
<meta charset='UTF-8'>
<meta name='viewport' content='width=device-width, initial-scale=1.0'>
<title>Document</title>
</head>
<body>
<div id='app'>
<!-- <h2 :style="{key(属性值):value(属性值)}">{{message}}</h2> -->
<h2 :style="{fontSize:finalSize,color:finalColor}">{{message}}</h2>
</div>
<script src='../js/vue.js'></script>
<script>
const app = new Vue({
el:'#app', //用于挂载要管理的元素
data:{ //定义数据
message: '你好啊,李银河!',
name: 'codewhy',
finalSize: '50px',
finalColor: 'red'
}
})
</script>
</body>
</html>
函数方法改进:
<!DOCTYPE html>
<html lang='en'>
<head>
<meta charset='UTF-8'>
<meta name='viewport' content='width=device-width, initial-scale=1.0'>
<title>Document</title>
</head>
<body>
<div id='app'>
<!-- <h2 :style="{key(属性值):value(属性值)}">{{message}}</h2> -->
<h2 :style="getStyles()">{{message}}</h2>
</div>
<script src='../js/vue.js'></script>
<script>
const app = new Vue({
el:'#app', //用于挂载要管理的元素
data:{ //定义数据
message: '你好啊,李银河!',
name: 'codewhy',
finalSize: '50px',
finalColor: 'red'
},
methods:{
getStyles:function(){
return {fontSize:this.finalSize,color:this.finalColor};
}
}
})
</script>
</body>
</html>
了解即可
在这里插入图片描述
1.1VueJS介绍
Vue.js是一个构建数据驱动的 web 界面的渐进式框架。Vue.js 的目标是通过尽可能简单的 API 实现响应的数据绑定和组合的视图组件。它不仅易于上手,还便于与第三方库或既有项目整合。
官网:https://cn.vuejs.org/
1.2MVVM模式
MVVM是Model-View-ViewModel的简写。它本质上就是MVC 的改进版。MVVM 就是将其中的View 的状态和行为抽象化,让我们将视图 UI 和业务逻辑分开
MVVM模式和MVC模式一样,主要目的是分离视图(View)和模型(Model)
Vue.js 是一个提供了 MVVM 风格的双向数据绑定的 Javascript 库,专注于View 层。它的核心是 MVVM 中的 VM, 也就是 ViewModel。 ViewModel负责连接 View 和 Model,保证视图和数据的一致性,这种轻量级的架构让前端开发更加高效、便捷
1.3VueJS 快速入门
1.3VueJS 快速入门
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>快速入门</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> {{message}} </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域data:{ message:'hello world' //注意不要写分号结尾 } }); </script> </body> </html>
1.4插值表达式
数据绑定最常见的形式就是使用“Mustache”语法 (双大括号) 的文本插值,Mustache 标签将会被替代为对应数据对象上属性的值。无论何时,绑定的数据对象上属性发生了改变,插值处的内容都会更新。
Vue.js 都提供了完全的 JavaScript 表达式支持。
{{ number + 1 }} {{ ok ? 'YES' : 'NO' }}
这些表达式会在所属 Vue 实例的数据作用域下作为 JavaScript 被解析。有个限制就是,每个绑定都只能包含单个表达式,所以下面的例子都不会生效。
<!-- 这是语句,不是表达式 --> {{ var a = 1 }} <!-- 流控制也不会生效,请使用三元表达式 --> {{ if (ok) { return message } }}
2.1v-on
可以用指令监听 DOM 事件,并在触发时运行一些 JavaScript 代码
2.1.1v-on:click
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>事件处理 v-on示例1</title>
<script src="js/vuejs-2.5.16.js"></script>
</head>
<body>
<div id="app">
{{message}}
<button v-on:click="fun1('good')">点击改变</button>
</div>
<script>
new Vue({
el:'#app', //表示当前vue对象接管了div区域data:{
message:'hello world' //注意不要写分号结尾
},
methods:{
fun1:function(msg){ this.message=msg;
}
}
});
</script>
</body>
</html>
2.1.2v-on:keydown
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>事件处理 v-on示例2</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <input type="text"v-on:keydown="fun2('good',$event)"> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域methods:{ fun2:function(msg,event){ if(! ((event.keyCode>=48&&event.keyCode<=57)||event.keyCode==8||event.keyCode==46)){ event.preventDefault(); } } } }); </script> </body> </html>
2.1.3v-on:mouseover
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>事件处理 v-on示例3</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <div v-on:mouseover="fun1" id="div"> <textarea v-on:mouseover="fun2($event)">这是一个文件域</textarea> </div> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域methods:{ fun1:function(){ alert("div"); }, fun2:function(event){ alert("textarea"); event.stopPropagation();//阻止冒泡 } } }); </script> </body> </html>
2.1.4事件修饰符
Vue.js 为 v-on 提供了事件修饰符来处理 DOM 事件细节,如:event.preventDefault() 或
event.stopPropagation()。
Vue.js通过由点(.)表示的指令后缀来调用修饰符。
.stop
.prevent
.capture
.self
.once
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-on 事件修饰符</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <form @submit.prevent action="http://www.itcast.cn" method="get"> <input type="submit" value="提交"/> </form> <div @click="fun1"> <a @click.stop href="http://www.itcast.cn">itcast</a> </div> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域methods:{ fun1:function(){ alert("hello itcast"); } } }); </script> </body> </html>
2.1.5按键修饰符
Vue 允许为 v-on 在监听键盘事件时添加按键修饰符全部的按键别名:
.enter
.tab
.delete(捕获 “删除” 和 “退格” 键)
.esc
.space
.up
.down
.left
.right
.ctrl
.alt
.shift
.meta
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-on 按钮修饰符</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <input type="text" v-on:keyup.enter="fun1"> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域methods:{ fun1:function(){ alert("你按了回车"); } } }); </script> </body> </html> <p><!-- Alt + C --> <input @keyup.alt.67="clear"> <!-- Ctrl + Click --> <div @click.ctrl="doSomething">Do something</div>
v-on简写方式
<!-- 完整语法 --> <a v-on:click="doSomething">...</a> <!-- 缩 写 --> <a @click="doSomething">...</a>
2.2v-text与v-html
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-html与v-text</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <div v-text="message"></div> <div v-html="message"></div> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域data:{ message:"<h1>传智黑马</h1>" } }); </script> </body> </html>
2.3v-bind
插值语法不能作用在 HTML 特性上,遇到这种情况应该使用 v-bind指令
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-bind</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <font size="5" v-bind:color="ys1">传智播客</font> <font size="5" :color="ys2">黑马程序员</font> <hr> <a v-bind={href:"http://www.itcast.cn/index/"+id}>itcast</a> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域data:{ ys1:"red", ys2:"green", id:1 } }); </script> </body> </html>
v-bind简写方式
<!-- 完整语法 --> <a v-bind:href="url">...</a> <!-- 缩 写 --> <a :href="url">...</a>
2.4v-model
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-model</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> 姓名:<input type="text" id="username" v-model="user.username"><br> 密码:<input type="password" id="password" v-model="user.password"><br> <input type="button" @click="fun" value="获取"> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域data:{ user:{username:"",password:""} }, methods:{ fun:function(){ alert(this.user.username+" "+this.user.password); this.user.username="tom"; this.user.password="11111111"; } } }); </script> </body> </html>
2.5v-for
操作array
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-model</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <ul> <li v-for="(item,index) in list">{{item+" "+index}}</li> </ul> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域 data:{ list:[1,2,3,4,5,6] } }); </script> </body> </html>
操作对象
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-for示例1</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <ul> <li v-for="(value,key) in product">{{key}}--{{value}}</li> </ul> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域data:{ product:{id:1,pname:"电视机",price:6000} } }); </script> </body> </html>
操作对象数组
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-for示例1</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <table border="1"> <tr> <td>序号</td> <td>名称</td> <td>价格</td> </tr> <tr v-for="p in products"> <td> {{p.id}} </td> <td> {{p.pname}} </td> <td> {{p.price}} </td> </tr> </table> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域data:{ products:[{id:1,pname:"电视机",price:6000},{id:2,pname:"电冰箱",price:8000}, {id:3,pname:"电风扇",price:600}] } }); </script> </body> </html>
v-if是根据表达式的值来决定是否渲染元素
v-show是根据表达式的值来切换元素的display css属性
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>v-if与v-show</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <span v-if="flag">传智播客</span> <span v-show="flag">itcast</span> <button @click="toggle">切换</button> </div> <script> new Vue({ el:'#app', //表示当前vue对象接管了div区域data:{ flag:false }, methods:{ toggle:function(){ this.flag=!this.flag; } } }); </script> </body> </html>
每个 Vue 实例在被创建之前都要经过一系列的初始化过程.
vue 在 生 命 周 期 中 有 这 些 状 态 , beforeCreate,created,beforeMount,mounted,beforeUpdate,updated,beforeDestroy,destroyed 。 Vue 在实例化的过程中,会调用这些生命周期的钩子,给我们提供了执行自定义逻辑的机会。那么,在这些vue钩子 中,vue实例到底执行了那些操作,我们先看下面执行的例子
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>生命周期</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> {{message}} </div> <script> var vm = new Vue({ el: "#app", data: { message: 'hello world' }, beforeCreate: function() { console.log(this); showData('创建vue实例前', this); }, created: function() { showData('创建vue实例后', this); }, beforeMount: function() { showData('挂载到dom前', this); }, mounted: function() { showData('挂载到dom后', this); }, beforeUpdate: function() { showData('数据变化更新前', this); }, updated: function() { showData('数据变化更新后', this); }, beforeDestroy: function() { vm.test = "3333"; showData('vue实例销毁前', this); }, destroyed: function() { showData('vue实例销毁后', this); } }); function realDom() { console.log('真实dom结构:' + document.getElementById('app').innerHTML); } function showData(process, obj) { console.log(process); console.log('data 数据:' + obj.message) console.log(' 挂 载 的 对 象 :') console.log(obj.$el) realDom(); console.log(' ') console.log(' ') } vm.message="good "; vm.$destroy(); </script> </body> </html>
vue对象初始化过程中,会执行到beforeCreate,created,beforeMount,mounted 这几个钩子的内容
beforeCreate :数据还没有监听,没有绑定到vue对象实例,同时也没有挂载对象
created :数据已经绑定到了对象实例,但是还没有挂载对象
beforeMount: 模板已经编译好了,根据数据和模板已经生成了对应的元素对象,将数据对象关联到了对象的el属性,el属性是一个HTMLElement对象,也就是这个阶段,vue实例通过原生的createElement等方法来创建这个html片段,准备注入到我们vue实例指明的el属性所对应的挂载点
mounted:将el的内容挂载到了el,相当于我们在jquery执行了(el).html(el),生成页面上真正的dom,上面我们 就会发现dom的元素和我们el的元素是一致的。在此之后,我们能够用方法来获取到el元素下的dom对象,并进 行各种操作
当我们的data发生改变时,会调用beforeUpdate和updated方
beforeUpdate :数据更新到dom之前,我们可以看到$el对象已经修改,但是我们页面上dom的数据还没有发生改变
updated: dom结构会通过虚拟dom的原则,找到需要更新页面dom结构的最小路径,将改变更新到dom上面,完成更新
beforeDestroy,destroed :实例的销毁,vue实例还是存在的,只是解绑了事件的监听还有watcher对象数据与view的绑定,即数据驱动
4.1vue-resource
vue-resource是Vue.js的插件提供了使用XMLHttpRequest或JSONP进行Web请求和处理响应的服务。 当vue更新到2.0之后,作者就宣告不再对vue-resource更新,而是推荐的axios,在这里大家了解一下vue-resource就可以。
vue-resource的github: https://github.com/pagekit/vue-resource
4.2axios
Axios 是一个基于 promise 的 HTTP 库,可以用在浏览器和 node.js 中
axios的github:https://github.com/axios/axios
4.2.1引入axios
首先就是引入axios,如果你使用es6,只需要安装axios模块之后
import axios from 'axios'; //安装方法 npm install axios //或 bower install axios
当然也可以用script引入
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
4.2.2get请求
//通过给定的ID来发送请求axios.get('/user?ID=12345') .then(function(response){ console.log(response); }) .catch(function(err){ console.log(err); }); //以上请求也可以通过这种方式来发送axios.get('/user',{ params:{ ID:12345 } }) .then(function(response){ console.log(response); }) .catch(function(err){ console.log(err); });
4.2.3post请求
axios.post('/user',{ firstName:'Fred', lastName:'Flintstone' }) .then(function(res){ console.log(res); }) .catch(function(err){ console.log(err); });
为方便起见,为所有支持的请求方法提供了别名
axios.request(config)
axios.get(url[, config]) axios.delete(url[, config]) axios.head(url[, config]) axios.post(url[, data[, config]]) axios.put(url[, data[, config]]) axios.patch(url[, data[, config]])
5.1案例需求
完成用户的查询与修改操作
5.2数据库设计与表结构
CREATE DATABASE vuejsdemo; USE vuejsdemo; CREATE TABLE USER( id INT PRIMARY KEY AUTO_INCREMENT, age INT, username VARCHAR(20), PASSWORD VARCHAR(50), email VARCHAR(50), sex VARCHAR(20) )
User类
public class User { private Integer id; private String username; private String password; private String sex; private int age; private String email; 省略getter/setter }
5.3服务器端
5.3.1配置文件
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">
<modelVersion>4.0.0</modelVersion>
<groupId>com.itheima.vuejsDemo</groupId>
<artifactId>vuejsDemo</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>vuejsDemo Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<spring.version>5.0.2.RELEASE</spring.version>
<slf4j.version>1.6.6</slf4j.version>
<log4j.version>1.2.12</log4j.version>
<mybatis.version>3.4.5</mybatis.version>
</properties>
<dependencies><!-- spring -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.8</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency><!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency><!-- log end -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.5</version>
</dependency>
</dependencies>
<build>
<finalName>vuejsDemo</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default- bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.0</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
</plugin>
</plugins>
</build>
</project>
web.mxl
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1" metadata-complete="true"> <!-- 手动指定 spring 配置文件位置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- 配置 spring 提供的监听器,用于启动服务时加载容器 。 该间监听器只能加载 WEB-INF 目录中名称为 applicationContext.xml 的配置文件 --> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <!-- 配置 spring mvc 的核心控制器 --> <servlet> <servlet-name>springmvcDispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 配置初始化参数,用于读取 springmvc 的配置文件 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <!-- 配置 servlet 的对象的创建时间点:应用加载时创建。取值只能是非 0 正整数,表示启动顺序 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvcDispatcherServlet</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <!-- 配置 springMVC 编码过滤器 --> <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <!-- 设置过滤器中的属性值 --> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <!-- 启动过滤器 --> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <!-- 过滤所有请求 --> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app>
springmvc.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置创建 spring 容器要扫描的包 --> <context:component-scan base-package="com.itheima"> <!-- 制定扫包规则 ,只扫描使用@Controller 注解的 JAVA 类 --> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <mvc:annotation-driven></mvc:annotation-driven> </beans>
applicationContext.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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置 spring 创建容器时要扫描的包 --> <context:component-scan base-package="com.itheima"> <!--制定扫包规则,不扫描@Controller 注解的 JAVA 类,其他的还是要扫描 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 加载配置文件 --> <context:property-placeholder location="classpath:db.properties"/> <!-- 配 置 MyBatis 的 Session 工 厂 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 数据库连接池 --> <property name="dataSource" ref="dataSource"/> <!-- 加载 mybatis 的全局配置文件 --> <property name="configLocation" value="classpath:SqlMapConfig.xml"/> </bean> <!-- 配置数据源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driver}"></property> <property name="jdbcUrl" value="${jdbc.url}"></property> <property name="user" value="${jdbc.username}"></property> <property name="password" value="${jdbc.password}"></property> </bean> <!-- 配置 Mapper 扫描器 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.itheima.dao"/> </bean> <tx:annotation-driven/> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> </beans>
db.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/vuejsDemo jdbc.username=root jdbc.password=root
5.3.2Controller
@RequestMapping("/user") @Controller @ResponseBody public class UserController { @Autowired private IUserService userService; @RequestMapping(value="/findAll.do") public List<User> findAll() { return userService.findAll(); } @RequestMapping(value="/findById.do") public User findById(Integer id) { return userService.findById(id); } @RequestMapping(value="/update.do") public User update(@RequestBody User user) { return userService.update(user); } }
5.3.3Dao
public interface IUserDao { @Select("select * from user") public List<User> findAll(); @Select("select * from user where id=#{id}") User findById(Integer id); @Update("update user set username=#{username},password=#{password},sex=#{sex},age=# {age},email=#{email} where id=#{id}") void update(User user); }
5.4客户端
5.4.1user.html页面
<!DOCTYPE html> <html> <head> <!-- 页面meta --> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>数据 - AdminLTE2定制版</title> <meta name="description" content="AdminLTE2定制版"> <meta name="keywords" content="AdminLTE2定制版"> <meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport"> <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script> <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> <link rel="stylesheet" href="/vuejsDemo/plugins/bootstrap/css/bootstrap.min.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/font-awesome/css/font-awesome.min.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/ionicons/css/ionicons.min.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/iCheck/square/blue.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/morris/morris.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/jvectormap/jquery-jvectormap-1.2.2.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/datepicker/datepicker3.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/daterangepicker/daterangepicker.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/bootstrap-wysihtml5/bootstrap3- wysihtml5.min.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/datatables/dataTables.bootstrap.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/treeTable/jquery.treetable.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/treeTable/jquery.treetable.theme.default.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/select2/select2.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/colorpicker/bootstrap-colorpicker.min.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/bootstrap-markdown/css/bootstrap- markdown.min.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/adminLTE/css/AdminLTE.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/adminLTE/css/skins/_all-skins.min.css"> <link rel="stylesheet" href="/vuejsDemo/css/style.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/ionslider/ion.rangeSlider.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/ionslider/ion.rangeSlider.skinNice.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/bootstrap-slider/slider.css"> <link rel="stylesheet" href="/vuejsDemo/plugins/bootstrap-datetimepicker/bootstrap- datetimepicker.css"> </head> <body class="hold-transition skin-purple sidebar-mini"> <div class="wrapper" id="app"> <!-- 页面头部 --> <header class="main-header"> <!-- Logo --> <a href="all-admin-index.html" class="logo"> <!-- mini logo for sidebar mini 50x50 pixels --> <span class="logo-mini"><b>数据</b></span> <!-- logo for regular state and mobile devices --> <span class="logo-lg"><b>数据</b>后台管理</span> </a> <!-- Header Navbar: style can be found in header.less --> <nav class="navbar navbar-static-top"> <!-- Sidebar toggle button--> <a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button"> <span class="sr-only">Toggle navigation</span> </a> <div class="navbar-custom-menu"> <ul class="nav navbar-nav"> <!-- Messages: style can be found in dropdown.less--> <li class="dropdown messages-menu"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"> <i class="fa fa-envelope-o"></i> <span class="label label-success">4</span> </a> <ul class="dropdown-menu"> <li class="header">你有4个邮件</li> <li> <!-- inner menu: contains the actual data --> <ul class="menu"> <li> class="img-circle" alt="User Image"> <!-- start message --> <a href="#"> <div class="pull-left"> <img src="/vuejsDemo/img/user2-160x160.jpg" </div> <h4> </small> </a> </li> 系统消息 <small><i class="fa fa-clock-o"></i> 5 分钟前 </h4> <p>欢迎登录系统?</p> <!-- end message --> <li> class="img-circle" alt="User Image"> <a href="#"> <div class="pull-left"> <img src="/vuejsDemo/img/user3-128x128.jpg" </div> <h4> </small> </a> </li> <li> 团队消息 <small><i class="fa fa-clock-o"></i> 2 小时前 </h4> <p>你有新的任务了</p> <a href="#"> <div class="pull-left"> <img src="/vuejsDemo/img/user4-128x128.jpg" class="img-circle" alt="User Image"> </div> <h4> Today</small> </a> </li> <li> Developers <small><i class="fa fa-clock-o"></i> </h4> <p>Why not buy a new awesome theme?</p> class="img-circle" alt="User Image"> <a href="#"> <div class="pull-left"> <img src="/vuejsDemo/img/user3-128x128.jpg" </div> <h4> Yesterday</small> </a> </li> <li> Sales Department <small><i class="fa fa-clock-o"></i> </h4> <p>Why not buy a new awesome theme?</p> class="img-circle" alt="User Image"> <a href="#"> <div class="pull-left"> <img src="/vuejsDemo/img/user4-128x128.jpg" </div> <h4> days</small> </a> </li> </ul> </li> Reviewers <small><i class="fa fa-clock-o"></i> 2 </h4> <p>Why not buy a new awesome theme?</p> <li class="footer"><a href="#">See All Messages</a></li> </ul> </li> <!-- Notifications: style can be found in dropdown.less --> <li class="dropdown notifications-menu"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"> <i class="fa fa-bell-o"></i> <span class="label label-warning">10</span> </a> <ul class="dropdown-menu"> <li class="header">你有10个新消息</li> <li> <!-- inner menu: contains the actual data --> .............................. .............................. .............................. .............................. .............................. .............................. <script src="/vuejsDemo/plugins/jQuery/jquery-2.2.3.min.js"></script> <script src="/vuejsDemo/plugins/jQueryUI/jquery-ui.min.js"></script> <script> $.widget.bridge('uibutton', $.ui.button); </script> <script src="/vuejsDemo/plugins/bootstrap/js/bootstrap.min.js"></script> <script src="/vuejsDemo/plugins/raphael/raphael-min.js"></script> <script src="/vuejsDemo/plugins/morris/morris.min.js"></script> <script src="/vuejsDemo/plugins/sparkline/jquery.sparkline.min.js"></script> <script src="/vuejsDemo/plugins/jvectormap/jquery-jvectormap-1.2.2.min.js"></script> <script src="/vuejsDemo/plugins/jvectormap/jquery-jvectormap-world-mill-en.js"></script> <script src="/vuejsDemo/plugins/knob/jquery.knob.js"></script> <script src="/vuejsDemo/plugins/daterangepicker/moment.min.js"></script> <script src="/vuejsDemo/plugins/daterangepicker/daterangepicker.js"></script> <script src="/vuejsDemo/plugins/daterangepicker/daterangepicker.zh-CN.js"></script> <script src="/vuejsDemo/plugins/datepicker/bootstrap-datepicker.js"></script> <script src="/vuejsDemo/plugins/datepicker/locales/bootstrap-datepicker.zh-CN.js"></script> <script src="/vuejsDemo/plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.all.min.js"></script> <script src="/vuejsDemo/plugins/slimScroll/jquery.slimscroll.min.js"></script> <script src="/vuejsDemo/plugins/fastclick/fastclick.js"></script> <script src="/vuejsDemo/plugins/iCheck/icheck.min.js"></script> <script src="/vuejsDemo/plugins/adminLTE/js/app.min.js"></script> <script src="/vuejsDemo/plugins/treeTable/jquery.treetable.js"></script> <script src="/vuejsDemo/plugins/select2/select2.full.min.js"></script> <script src="/vuejsDemo/plugins/colorpicker/bootstrap-colorpicker.min.js"></script> <script src="/vuejsDemo/plugins/bootstrap-wysihtml5/bootstrap-wysihtml5.zh-CN.js"></script> <script src="/vuejsDemo/plugins/bootstrap-markdown/js/bootstrap-markdown.js"></script> <script src="/vuejsDemo/plugins/bootstrap-markdown/locale/bootstrap-markdown.zh.js"></script> <script src="/vuejsDemo/plugins/bootstrap-markdown/js/markdown.js"></script> <script src="/vuejsDemo/plugins/bootstrap-markdown/js/to-markdown.js"></script> <script src="/vuejsDemo/plugins/ckeditor/ckeditor.js"></script> <script src="/vuejsDemo/plugins/input-mask/jquery.inputmask.js"></script> <script src="/vuejsDemo/plugins/input-mask/jquery.inputmask.date.extensions.js"></script> <script src="/vuejsDemo/plugins/input-mask/jquery.inputmask.extensions.js"></script> <script src="/vuejsDemo/plugins/datatables/jquery.dataTables.min.js"></script> <script src="/vuejsDemo/plugins/datatables/dataTables.bootstrap.min.js"></script> <script src="/vuejsDemo/plugins/chartjs/Chart.min.js"></script> <script src="/vuejsDemo/plugins/flot/jquery.flot.min.js"></script> <script src="/vuejsDemo/plugins/flot/jquery.flot.resize.min.js"></script> <script src="/vuejsDemo/plugins/flot/jquery.flot.pie.min.js"></script> <script src="/vuejsDemo/plugins/flot/jquery.flot.categories.min.js"></script> <script src="/vuejsDemo/plugins/ionslider/ion.rangeSlider.min.js"></script> <script src="/vuejsDemo/plugins/bootstrap-slider/bootstrap-slider.js"></script> <script src="/vuejsDemo/plugins/bootstrap-datetimepicker/bootstrap-datetimepicker.js"></script> <script src="/vuejsDemo/plugins/bootstrap-datetimepicker/locales/bootstrap-datetimepicker.zh- CN.js"></script> <script src="/vuejsDemo/js/vuejs-2.5.16.js"></script> <script src="/vuejsDemo/js/axios-0.18.0.js"></script> <script src="/vuejsDemo/js/user.js"></script> <script> $(document).ready(function () { // 选择框 $(".select2").select2(); // WYSIHTML5编辑器 $(".textarea").wysihtml5({ locale: 'zh-CN' }); }); // 设置激活菜单 function setSidebarActive(tagUri) { var liObj = $("#" + tagUri); if (liObj.length > 0) { liObj.parent().parent().addClass("active"); liObj.addClass("active"); } $(document).ready(function () { // 激活导航位置 setSidebarActive("admin-datalist"); // 列表按钮 $("#dataList td input[type='checkbox']").iCheck({ checkboxClass: 'icheckbox_square-blue', increaseArea: '20%' }); // 全选操作 $("#selall").click(function () { var clicks = $(this).is(':checked'); if (!clicks) { $("#dataList td input[type='checkbox']").iCheck("uncheck"); } else { $("#dataList td input[type='checkbox']").iCheck("check"); }); }); } $(this).data("clicks", !clicks); </script> </body> </html>
5.4.2user.js页面
生成动态的HTML页面,页面中使用嵌入 Vue.js 语法可动态生成
1. {{xxxx}}双大括号文本绑定
2. v-xxxx以v-开头用于标签属性绑定,称为指令
双大括号语法{{}}
格式:{{表达式}}
作用:
使用在标签体中,用于获取数据
可以使用 JavaScript 表达式
一次性插值v-once
通过使用v-once指令,你也能执行一次性地插值,当数据改变时,插值处的内容不会更新
输出HTML指令v-html
格式:v-html='xxxx'
作用:
如果是HTML格式数据,双大括号会将数据解释为普通文本,为了输出真正的 HTML,你需要使用v-html指令。
Vue 为了防止 XSS 攻击,在此指令上做了安全处理,当发现输出内容有 script 标签时,则不渲染
XSS 攻击主要利用 JS 脚本注入到网页中,读取 Cookie 值(Cookie一般存储了登录身份信息),读取到了发送到黑客服务器,从而黑客可以使用你的帐户做非法操作。XSS 攻击还可以在你进入到支付时,跳转到钓鱼网站。
元素绑定指令v-bind
完整格式:v-bind:元素的属性名='xxxx'
缩写格式::元素的属性名='xxxx'
作用:将数据动态绑定到指定的元素上
事件绑定指令v-on
完整格式:v-on:事件名称="事件处理函数名"
缩写格式:@事件名称="事件处理函数名"注意:@后面没有冒号
作用:用于监听 DOM 事件
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<h3>1、{{}}双大括号输出文本内容</h3>
<!-- 文本内容 -->
<p>{{msg}}</p>
<!-- JS表达式 -->
<p>{{score + 1}}</p>
<h3>2、一次性插值</h3>
<p v-once>{{score + 1}}</p>
<h3>3、指令输出真正的 HTML 内容 v-html</h3>
<p>双大括号:{{contentHtml}}</p>
<!--
v-html:
1、如果输出的内容是HTML数据,双大括号将数据以普通文本方式进行输出,为了输出真正HTML数据,就需要使用v-html指定
2、为了防止XSS攻击
-->
<p>v-html:<span v-html="contentHtml"></span></p>
<h3>4、v-bind属性绑定指令</h3>
<img v-bind:src="imgUrl">
<img :src="imgUrl">
<a :href="tzUrl">跳转</a>
<h3>5、事件绑定指令 v-on</h3> <input type="text" value="1" v-model="num"> <button @click='add'>点击+1</button> </div> <script src="./node_modules/vue/dist/vue.js"></script> <script> var vm = new Vue({ el: '#app', data: { msg: "菜园子", score: 100, contentHtml: '<span style="color:red">此内容为红色字体</span>', imgUrl: 'https://cn.vuejs.org/images/logo.png', tzUrl: 'https://www.baidu.com/', num : 10 }, methods: { add: function(){ console.log('add被调用') this.num ++ } }, }) </script></body></html>
git源码地址:https://github.com/caiyuanzi-song/vue-demo.git
*请认真填写需求信息,我们会在24小时内与您取得联系。