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Vue (读音 /vjuː/,类似于 view) 是一套用于构建用户界面的渐进式框架。与其它大型框架不同的是,Vue 被设计为可以自底向上逐层应用。Vue 的核心库只关注视图层。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。另一方面,当与现代化的工具链以及各种支持类库结合使用时,Vue 也完全能够为复杂的单页应用提供驱动。
前端框架三巨头:Vue.js、React.js、AngularJS,vue.js以其轻量易用著称,vue.js和React.js发展速度最快。
渐进式:可以选择性的使用该框架的一个或一些组件,这些组件的使用也不需要将框架全部组件都应用;而且用了这些组件也不要求你的系统全部都使用该框架。
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
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。
<!DOCTYPE html> <html lang="en"> <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}} <!--Vue的插值表达式,把data中定义的数据显示到此处--> <!--三元运算符--> {{ true ? "OK" : "NO" }} <!--数学运算--> {{number*3.14}} <!--插值表达式不支持 {{var a = 1;}} {{if(a=10){}}} --> </div> </body> <script> //view model //创建vue对象 new Vue({ el:"#app", //由vue接管id为app区域 data:{ message:"Hello Vue!", //注意:此处不要加分号 number:100 } }); </script> </html>
Vue.js 支持数值运算,三元运算:
{{ number + 1 }}
{{ ok ? 'YES' : 'NO' }}
Vue.js 不支持语句,流控控制:
<!-- 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 } }}
可以用 v-on 指令监听 DOM 事件,并在触发时运行一些 JavaScript 代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>v-on:click</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> {{message}} <button v-on:click="fun1('Vue v-on')">vue的onclick</button> </div> </body> <script> //view model new Vue({ el:"#app", //表示当前vue对象接管了div区域 data:{ message:"Hello Vue!" //注意不要写分号结尾 }, methods:{ fun1:function (msg){ alert("Hello"); this.message=msg; } } }); </script> </html>
以下为使用传统方式和vue方式分别实现输入框只能输入数字,输入其他无效。
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>v-on:keydown</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> Vue:<input type="text" v-on:keydown="fun($event)"> <hr/> 传统js:<input type="text" onkeydown="showKeyCode()" /> </div> </body> <script> //view model new Vue({ el:"#app", methods:{ /* $event 它是vue中的事件对象,和我们传统js的event对象是一样的 */ fun:function(event){ var keyCode = event.keyCode; if (keyCode < 48 || keyCode > 57){ //不让键盘的按键起作用 event.preventDefault() } } } }); //传统js的键盘按下事件 function showKeyCode(){ //event对象和我们的document对象以及Window对象是一样的,可以不用定义直接使用 var keyCode = event.keyCode; if (keyCode < 48 || keyCode > 57){ //不让键盘的按键起作用 event.preventDefault() } //alert(keyCode); // if (event.keyCode == 13){ // alert("你按的是回车"); // } } </script> </html>
这里实现鼠标移动到指定位置出现弹框,
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>v-on:mouseover</title> <script src="js/vuejs-2.5.16.js"></script> <style> #div { background-color: red; width: 300px; height: 300px; } </style> </head> <body> <div id="app"> <div v-on:mouseover="fun1" id="div"> <textarea v-on:mouseover="fun2($event)">这是一个文件域</textarea> </div> <!--<div onmouseover="divmouseover()" id="div"> <textarea onmouseover="textareamouseover()">这是一个文件域</textarea> </div>--> </div> </body> <script> //view model /* @事件名称 就是 v-on:事件名称的简写方式 @mouseover 就等同于 v-on:mouseover * */ new Vue({ el:"#app", //由vue接管id为app区域 methods:{ fun1:function(){ alert("鼠标悬停在div上") }, fun2:function(event){ alert("鼠标悬停在textarea上") event.stopPropagation(); //消除传递,否则textarea在div内,textarea的弹框弹完还会弹div的弹框 } } }); //传统的js方式 function divmouseover(){ alert("鼠标移动到div上了"); } function textareamouseover(){ alert("鼠标移动到textarea上了"); event.stopPropagation(); //消除传递,否则textarea在div内,textarea的弹框弹完还会弹div的弹框 } </script> </html>
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。
<!DOCTYPE html> <html lang="en"> <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.itheima.com" method="post"> <input type="submit" value="提交"> </form> <form action="http://www.itheima.com" method="post" onsubmit="return checkForm()"> <input type="submit" value="提交"> </form> </div> </body> <script> //view model new Vue({ el:"#app" }); //传统js方式 function checkForm(){ alert(1); //表单验证必须有一个明确的boolean类型返回值 //在应用验证方法时必须加上 return 方法名称 return false; } </script> </html>
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:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>v-on:按键修饰符</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> Vue:<input type="text" v-on:keydown.enter="fun1"> </div> </body> <script> //view model new Vue({ el:"#app", methods:{ fun1:function (){ alert("按下的是回车"); } } }); </script> </html>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>v-text与v-html</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 id="div1"></div> <div id="div2"></div>--> </div> </body> <script> //view model new Vue({ el:"#app", data:{ message:"<h1>Hello Vue</h1>" } }); //传统js的innerText和innerHTML window.onload = function (){ document.getElementById("div1").innerHTML="<h1>Hello</h1>"; document.getElementById("div2").innerText="<h1>Hello</h1>"; } </script> </html>
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 lang="en"> <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">船只</font> <font size="5" :color="ys2">黑马</font> </div> </body> <script> //view model //插值表达式不能用于html标签的属性取值 //要想给html标签的属性设置变量的值,需要使用v-bind //v-bind也可以简化写法 直接使用: new Vue({ el:"#app", data:{ ys1:"red", ys2:"green" } }); </script> </html>
v-bind简写方式
<!-- 完整语法 -->
<a v-bind:href="url">...</a>
<!-- 缩写 -->
<a :href="url">...</a>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>v-model</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <form action="" method="post"> 用户名:<input type="text" name="username" v-model="user.username" ><br/> 密码:<input type="text" name="password" v-model="user.password" ><br/> </form> </div> </body> <script> //view model new Vue({ el:"#app", data:{ user:{ username:"test", password:"1234" } } }); </script> </html>
操作array
<!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="(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2</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3</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 lang="en"> <head> <meta charset="UTF-8"> <title>v-if和v-show</title> <script src="js/vuejs-2.5.16.js"></script> </head> <body> <div id="app"> <span v-if="flag">船只</span> <span v-show="flag">itcast</span> <button @click="toggle">切换</button> </div> </body> <script> //view model new Vue({ el:"#app", data:{ flag:false }, methods:{ toggle:function (){ this.flag = !this.flag; } } }); </script> </html>
只有数据发生变化,并且 dom 使用了该数据,dom 才会更新,此时才执行更新的生命周期方法,更新前和更新后不是数据更新的状态,而是 dom 更新前与更新后。
<!DOCTYPE html> <html lang="en"> <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>
将上述代码中倒数第五行注释代码放开运行数据如下:
console.log('------------------')
console.log('------------------')
}
vm.message="good...";
//vm.$destroy();
</script>
</body>
</html>
将上述代码中倒数第五行注释代码放开运行数据如下:
console.log('------------------')
console.log('------------------')
}
//vm.message="good...";
vm.$destroy();
</script>
</body>
</html>
上述测试代码已上传至码云添加链接描述
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。
vue-resource的github: https://github.com/pagekit/vue-resource
Axios 是一个基于 promise 的 HTTP 库,可以用在浏览器和 node.js 中
axios的github:添加链接描述
//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); });
axios.post('/user',{
firstName:'Fred',
lastName:'Flintstone'
})
.then(function(res){
console.log(res);
})
.catch(function(err){
console.log(err);
});
完成用户的查询与修改操作
CREATE DATABASE vuejsdemo; USE vuejsdemo; DROP TABLE IF EXISTS `user`; CREATE TABLE `user` ( `id` int(11) NOT NULL AUTO_INCREMENT, `age` int(11) DEFAULT NULL, `username` varchar(20) DEFAULT NULL, `PASSWORD` varchar(50) DEFAULT NULL, `email` varchar(50) DEFAULT NULL, `sex` varchar(20) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8; INSERT INTO `user` VALUES ('1', '33', '张老师', '123', 'zzz@itcast.cn', '男 '); INSERT INTO `user` VALUES ('2', '31', '刘老师', '123', 'lll@itcast.cn', '女'); INSERT INTO `user` VALUES ('3', '17', '赵工', '213', 'zg@itcast.cn', '女'); INSERT INTO `user` VALUES ('4', '40', '高管', '213', 'gg@itcast.cn', 'female'); INSERT INTO `user` VALUES ('5', '28', '李总', '312', 'lz@jxjt.com', 'male'); INSERT INTO `user` VALUES ('6', '34', '王董', '312', 'wd@jxjt.com', 'male'); INSERT INTO `user` VALUES ('7', '55', '孙老板', '4321', 'slb@xzjt.com', '男'); INSERT INTO `user` VALUES ('8', '19', '陈秘书', '4321', 'cms@xzjt.com', '女');
pom.xml
<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>9</maven.compiler.source> <maven.compiler.target>9</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-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-orm</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> </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>2.9.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.9.0</version> </dependency> </dependencies>
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_2_5.xsd" version="2.5"> <display-name></display-name> <!-- 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.xmx.web.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.xmx"> <!--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"/> </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.xmx.dao"/> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!-- 配置事务的通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="*" propagation="REQUIRED" read-only="false"/> <tx:method name="find*" propagation="SUPPORTS" read-only="true"/> </tx:attributes> </tx:advice> <!-- 配置aop --> <aop:config> <aop:pointcut expression="execution(* com.xmx.service.impl.*.*(..))" id="pt1"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="pt1"/> </aop:config> </beans>
db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/vuejsdemo
jdbc.username=root
jdbc.password=root
User
package com.xmx.domain; import java.io.Serializable; /** * @Author Xumx * @Date 2021/3/15 11:09 * @Version 1.0 */ public class User implements Serializable { private Integer id; private String username; private String password; private Integer age; private String sex; private String email; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } @Override public String toString() { return "User{" + "id=" + id + ", username='" + username + '\'' + ", password='" + password + '\'' + ", age=" + age + ", sex='" + sex + '\'' + ", email='" + email + '\'' + '}'; } }
IUserDao
package com.xmx.dao; import com.xmx.domain.User; import org.apache.ibatis.annotations.Select; import org.apache.ibatis.annotations.Update; import java.util.List; /** * 用户的持久层接口 * @Author Xumx * @Date 2021/3/15 11:13 * @Version 1.0 */ public interface IUserDao { /* * 查询用户列表 * */ @Select("select * from user") List<User> findAll(); /* * 根据id查询 * */ @Select("select * from user where id = #{userId}") User findById(Integer userId); /* * 更新用户 * */ @Update("update user set username=#{username},password=#{password},age=#{age},sex=#{sex},email=#{email} where id = #{id}") void updateUser(User user); }
IUserService
package com.xmx.service; import com.xmx.domain.User; import org.apache.ibatis.annotations.Select; import org.apache.ibatis.annotations.Update; import java.util.List; /** * @Author Xumx * @Date 2021/3/15 11:21 * @Version 1.0 */ public interface IUserService { /* * 查询用户列表 * */ List<User> findAll(); /* * 根据id查询 * */ User findById(Integer userId); /* * 更新用户 * */ void updateUser(User user); }
IUserServiceImpl
package com.xmx.service.impl; import com.xmx.dao.IUserDao; import com.xmx.domain.User; import com.xmx.service.IUserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; /** * @Author Xumx * @Date 2021/3/15 11:23 * @Version 1.0 */ @Service public class IUserServiceImpl implements IUserService { @Autowired private IUserDao userDao; @Override public List<User> findAll() { return userDao.findAll(); } @Override public User findById(Integer userId) { return userDao.findById(userId); } @Override public void updateUser(User user) { userDao.updateUser(user); } }
UserController
package com.xmx.web.controller; import com.xmx.domain.User; import com.xmx.service.IUserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import java.util.List; /** * @Author Xumx * @Date 2021/3/15 11:52 * @Version 1.0 */ @Controller @RequestMapping("/user") @ResponseBody public class UserController { @Autowired private IUserService userService; /* * 查询所有 * */ @RequestMapping("/findAll") public List<User> findAll(){ return userService.findAll(); } /* * 根据id查询 * */ @RequestMapping("/findById") public User findById(Integer id){ return userService.findById(id); } /* * 更新 * */ @RequestMapping("/updateUser") public void updateUser(@RequestBody User user){ userService.updateUser(user); } }
<!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="plugins/bootstrap/css/bootstrap.min.css"> <link rel="stylesheet" href="plugins/font-awesome/css/font-awesome.min.css"> <link rel="stylesheet" href="plugins/ionicons/css/ionicons.min.css"> <link rel="stylesheet" href="plugins/iCheck/square/blue.css"> <link rel="stylesheet" href="plugins/morris/morris.css"> <link rel="stylesheet" href="plugins/jvectormap/jquery-jvectormap-1.2.2.css"> <link rel="stylesheet" href="plugins/datepicker/datepicker3.css"> <link 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href="plugins/bootstrap-slider/slider.css"> <link rel="stylesheet" href="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> <!-- start message --> <a href="#"> <div class="pull-left"> <img src="img/user2-160x160.jpg" class="img-circle" alt="User Image"> </div> <h4> 系统消息 <small><i class="fa fa-clock-o"></i> 5 分钟前</small> </h4> <p>欢迎登录系统?</p> </a> </li> <!-- end message --> <li> <a href="#"> <div class="pull-left"> <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image"> </div> <h4> 团队消息 <small><i class="fa fa-clock-o"></i> 2 小时前</small> </h4> <p>你有新的任务了</p> </a> </li> <li> <a href="#"> <div class="pull-left"> <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image"> </div> <h4> Developers <small><i class="fa fa-clock-o"></i> Today</small> </h4> <p>Why not buy a new awesome theme?</p> </a> </li> <li> <a href="#"> <div class="pull-left"> <img src="img/user3-128x128.jpg" class="img-circle" alt="User Image"> </div> <h4> Sales Department <small><i class="fa fa-clock-o"></i> Yesterday</small> </h4> <p>Why not buy a new awesome theme?</p> </a> </li> <li> <a href="#"> <div class="pull-left"> <img src="img/user4-128x128.jpg" class="img-circle" alt="User Image"> </div> <h4> Reviewers <small><i class="fa fa-clock-o"></i> 2 days</small> </h4> <p>Why not buy a new awesome theme?</p> </a> </li> </ul> </li> <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 --> <ul class="menu"> <li> <a href="#"> <i class="fa fa-users text-aqua"></i> 5 new members joined today </a> </li> <li> <a href="#"> <i class="fa fa-warning text-yellow"></i> Very long description here that may not fit into the page and may cause design problems </a> </li> <li> <a href="#"> <i class="fa fa-users text-red"></i> 5 new members joined </a> </li> <li> <a href="#"> <i class="fa fa-shopping-cart text-green"></i> 25 sales made </a> </li> <li> <a href="#"> <i class="fa fa-user text-red"></i> You changed your username </a> </li> </ul> </li> <li class="footer"><a href="#">View all</a></li> </ul> </li> <!-- Tasks: style can be found in dropdown.less --> <li class="dropdown tasks-menu"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"> <i class="fa fa-flag-o"></i> <span class="label label-danger">9</span> </a> <ul class="dropdown-menu"> <li class="header">你有9个新任务</li> <li> <!-- inner menu: contains the actual data --> <ul class="menu"> <li> <!-- Task item --> <a href="#"> <h3> Design some buttons <small class="pull-right">20%</small> </h3> <div class="progress xs"> <div class="progress-bar progress-bar-aqua" style="width: 20%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100"> <span class="sr-only">20% Complete</span> </div> </div> </a> </li> <!-- end task item --> <li> <!-- Task item --> <a href="#"> <h3> Create a nice theme <small class="pull-right">40%</small> </h3> <div class="progress xs"> <div class="progress-bar progress-bar-green" style="width: 40%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100"> <span class="sr-only">40% Complete</span> </div> </div> </a> </li> <!-- end task item --> <li> <!-- Task item --> <a href="#"> <h3> Some task I need to do <small class="pull-right">60%</small> </h3> <div class="progress xs"> <div class="progress-bar progress-bar-red" style="width: 60%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100"> <span class="sr-only">60% Complete</span> </div> </div> </a> </li> <!-- end task item --> <li> <!-- Task item --> <a href="#"> <h3> Make beautiful transitions <small class="pull-right">80%</small> </h3> <div class="progress xs"> <div class="progress-bar progress-bar-yellow" style="width: 80%" role="progressbar" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100"> <span class="sr-only">80% Complete</span> </div> </div> </a> </li> <!-- end task item --> </ul> </li> <li class="footer"> <a href="#">View all tasks</a> </li> </ul> </li> <!-- User Account: style can be found in dropdown.less --> <li class="dropdown user user-menu"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"> <img src="img/user2-160x160.jpg" class="user-image" alt="User Image"> <span class="hidden-xs">张猿猿</span> </a> <ul class="dropdown-menu"> <!-- User image --> <li class="user-header"> <img src="img/user2-160x160.jpg" class="img-circle" alt="User Image"> <p> 张猿猿 - 数据管理员 <small>最后登录 11:20AM</small> </p> </li> <!-- Menu Footer--> <li class="user-footer"> <div class="pull-left"> <a href="#" class="btn btn-default btn-flat">修改密码</a> </div> <div class="pull-right"> <a href="#" class="btn btn-default btn-flat">注销</a> </div> </li> </ul> </li> </ul> </div> </nav> </header> <!-- 页面头部 /--> <!-- 导航侧栏 --> <aside class="main-sidebar"> <!-- sidebar: style can be found in sidebar.less --> <section class="sidebar"> <!-- Sidebar user panel --> <div class="user-panel"> <div class="pull-left image"> <img src="img/user2-160x160.jpg" class="img-circle" alt="User Image"> </div> <div class="pull-left info"> <p>张猿猿</p> <a href="#"><i class="fa fa-circle text-success"></i> 在线</a> </div> </div> <!-- search form --> <!--<form action="#" method="get" class="sidebar-form"> <div class="input-group"> <input type="text" name="q" class="form-control" placeholder="搜索..."> <span class="input-group-btn"> <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i> </button> </span> </div> </form>--> <!-- /.search form --> <!-- sidebar menu: : style can be found in sidebar.less --> <ul class="sidebar-menu"> <li class="header">菜单</li> <li id="admin-index"><a href="all-admin-index.html"><i class="fa fa-dashboard"></i> <span>首页</span></a> </li> <!-- 菜单 --> <li class="treeview"> <a href="#"> <i class="fa fa-folder"></i> <span>用户管理</span> <span class="pull-right-container"> <i class="fa fa-angle-left pull-right"></i> </span> </a> <ul class="treeview-menu"> <li id="admin-login"> <a href="all-admin-login.html"> <i class="fa fa-circle-o"></i> 查询所有用户 </a> </li> </ul> </li> <!-- 菜单 /--> </ul> </section> <!-- /.sidebar --> </aside> <!-- 导航侧栏 /--> <!-- 内容区域 --> <!-- @@master = admin-layout.html--> <!-- @@block = content --> <div class="content-wrapper"> <!-- 内容头部 --> <section class="content-header"> <h1> 数据管理 <small>数据列表</small> </h1> <ol class="breadcrumb"> <li><a href="#"><i class="fa fa-dashboard"></i> 首页</a></li> <li><a href="#">数据管理</a></li> <li class="active">数据列表</li> </ol> </section> <!-- 内容头部 /--> <!-- 正文区域 --> <section class="content"> <!-- .box-body --> <div class="box box-primary"> <div class="box-header with-border"> <h3 class="box-title">列表</h3> </div> <div class="box-body"> <!-- 数据表格 --> <div class="table-box"> <!--工具栏--> <div class="pull-left"> <div class="form-group form-inline"> <div class="btn-group"> <button type="button" class="btn btn-default" title="新建"><i class="fa fa-file-o"></i> 新建 </button> <button type="button" class="btn btn-default" title="删除"><i class="fa fa-trash-o"></i> 删除 </button> <button type="button" class="btn btn-default" title="开启"><i class="fa fa-check"></i> 开启 </button> <button type="button" class="btn btn-default" title="屏蔽"><i class="fa fa-ban"></i> 屏蔽 </button> <button type="button" class="btn btn-default" title="刷新"><i class="fa fa-refresh"></i> 刷新 </button> </div> </div> </div> <div class="box-tools pull-right"> <div class="has-feedback"> <input type="text" class="form-control input-sm" placeholder="搜索"> <span class="glyphicon glyphicon-search form-control-feedback"></span> </div> </div> <!--工具栏/--> <!--数据列表--> <table id="dataList" class="table table-bordered table-striped table-hover dataTable"> <thead> <tr> <th class="" style="padding-right:0px;"> <input id="selall" type="checkbox" class="icheckbox_square-blue"> </th> <th class="sorting_asc">ID</th> <th class="sorting_desc">用户名</th> <th class="sorting_asc sorting_asc_disabled">密码</th> <th class="sorting_desc sorting_desc_disabled">性别</th> <th class="sorting">年龄</th> <th class="text-center sorting">邮箱</th> <th class="text-center">操作</th> </tr> </thead> <tbody> <tr v-for="u in userList"> <td><input name="ids" type="checkbox"></td> <td>{{u.id}}</td> <td>{{u.username}} </td> <td>{{u.password}}</td> <td>{{u.sex}}</td> <td>{{u.age}}</td> <td class="text-center">{{u.email}}</td> <td class="text-center"> <button type="button" class="btn bg-olive btn-xs">详情</button> <button type="button" class="btn bg-olive btn-xs" @click="findById(u.id)">编辑</button> </td> </tr> </tbody> <!--模态窗口--> <div class="tab-pane" id="tab-model"> <div id="myModal" class="modal modal-primary" role="dialog"> <div class="modal-dialog modal-lg"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"> <span aria-hidden="true">×</span></button> <h4 class="modal-title">用户信息</h4> </div> <div class="modal-body"> <div class="box-body"> <div class="form-horizontal"> <div class="form-group"> <label class="col-sm-2 control-label">用户名:</label> <div class="col-sm-5"> <input type="text" class="form-control" v-model="user.username"> </div> </div> <div class="form-group"> <label class="col-sm-2 control-label">密码:</label> <div class="col-sm-5"> <input type="text" class="form-control" v-model="user.password"> </div> </div> <div class="form-group"> <label class="col-sm-2 control-label">性别:</label> <div class="col-sm-5"> <input type="text" class="form-control" v-model="user.sex"> </div> </div> <div class="form-group"> <label class="col-sm-2 control-label">年龄:</label> <div class="col-sm-5"> <input type="text" class="form-control" v-model="user.age"> </div> </div> <div class="form-group"> <label class="col-sm-2 control-label">邮箱:</label> <div class="col-sm-5"> <input type="text" class="form-control" v-model="user.email"> </div> </div> </div> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-outline" data-dismiss="modal">关闭</button> <button type="button" class="btn btn-outline" data-dismiss="modal" @click="update">修改</button> </div> </div> <!-- /.modal-content --> </div> <!-- /.modal-dialog --> </div> <!-- /.modal --> </div> <!--模态窗口/--> </table> <!--数据列表/--> <!--工具栏--> <div class="pull-left"> <div class="form-group form-inline"> <div class="btn-group"> <button type="button" class="btn btn-default" title="新建"><i class="fa fa-file-o"></i> 新建 </button> <button type="button" class="btn btn-default" title="删除"><i class="fa fa-trash-o"></i> 删除 </button> <button type="button" class="btn btn-default" title="开启"><i class="fa fa-check"></i> 开启 </button> <button type="button" class="btn btn-default" title="屏蔽"><i class="fa fa-ban"></i> 屏蔽 </button> <button type="button" class="btn btn-default" title="刷新"><i class="fa fa-refresh"></i> 刷新 </button> </div> </div> </div> <div class="box-tools pull-right"> <div class="has-feedback"> <input type="text" class="form-control input-sm" placeholder="搜索"> <span class="glyphicon glyphicon-search form-control-feedback"></span> </div> </div> <!--工具栏/--> </div> <!-- 数据表格 /--> </div> <!-- /.box-body --> <!-- .box-footer--> <div class="box-footer"> <div class="pull-left"> <div class="form-group form-inline"> 总共2 页,共14 条数据。 每页 <select class="form-control"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> 条 </div> </div> <div class="box-tools pull-right"> <ul class="pagination"> <li> <a href="#" aria-label="Previous">首页</a> </li> <li><a href="#">上一页</a></li> <li><a href="#">1</a></li> <li><a href="#">2</a></li> <li><a href="#">3</a></li> <li><a href="#">4</a></li> <li><a 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new Vue({ el:"#app", data:{ user:{ id:"", username:"", password:"", email:"", age:"", sex:"" }, userList:[] }, methods:{ findAll:function (){ //在当前方法中定义一个变量,表明是vue对象 var _this = this; axios.get('/user/findAll.do') .then(function (response){ //handle success _this.userList = response.data; //响应数据给userList赋值 console.log(response); }) .cache(function (error){ //handle error console.log(error); }) }, findById:function (userid){ //在当前方法中定义一个变量,表明是vue对象 var _this = this; axios.get('/user/findById.do',{params:{id:userid}}) .then(function (response){ //handle success _this.user = response.data; //响应数据给userList赋值 $("#myModal").modal("show"); }) .cache(function (error){ //handle error console.log(error); }) }, update:function (user){//post请求 var _this = this; axios.post('/user/updateUser.do',_this.user) .then(function (response){ _this.findAll(); }) .cache(function (error){ //handle error console.log(error); }) } }, created(){ //当我们页面加载的时候触发请求,查询所有 this.findAll(); } });
上述案例项目已上传至码云添加链接描述
vue使用v-on绑定事件时可以正常使用,但是报错namespace ‘v-on’ is not bound
在setting->Editor->inspections->XML中去掉Unbound XML namespace prefix后面的对钩。问题解决。
@事件名称 就是 v-on:事件名称的简写方式
@mouseover 就等同于 v-on:mouseover
这样也可以解决报红问题。
v-on简写方式
<!-- 完整语法 -->
<a v-on:click="doSomething">...</a>
<!-- 缩写 -->
<a @click="doSomething">...</a>
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