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黑马eesy_15 Vue：04.Vue案例（ssm环境搭建）

04.Vue案例（ssm环境搭建）

1、Vue的快速入门
2、Vue的语法
　　插值表达式
　　事件的绑定
　　数据的显示
　　逻辑判断和循环输出

3、Vue的生命周期　　

      8个生命周期的执行点
　　　　4个基本的
　　　　4个特殊的
    axios的ajax异步请求
　　     它和jquery的ajax比较相似

4、综合案例
   实现用户的查询列表和更新操作
        前端：Vue
        后端：ssm

18案例-创建数据库和工程

vuejsdemo.sql

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');

maven项目的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>cn.bjut</groupId>
  <artifactId>day01_eesy_vuejsdemo</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>day01_eesy_vuejsdemo Maven Webapp</name>

  <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>5.0.10.RELEASE</spring.version>
      <slf4j.version>1.7.12</slf4j.version>
      <log4j.version>1.2.17</log4j.version>
      <mybatis.version>3.4.5</mybatis.version>
  </properties>
  <dependencies> <!-- spring -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.9.2</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>2.2</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>1.3.3</version><!--1.3.3是1.X.X版本最新-->
    </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>5.1.10</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.45</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.9</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.9</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.9.9</version>
    </dependency>
  </dependencies>

  <build>
    <finalName>day01_eesy_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>3.1.0</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>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</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>
  </build>
</project>

19案例-编写实体类持久层和业务层代码

因为是mysql单表操作CRUD

所以可以选用：通用mapper插件 + DAO层接口继承 + 实体类注解映射的方案

    <dependency><!--Mybatis 通用 Mapper Jar 集成-->
      <groupId>tk.mybatis</groupId>
      <artifactId>mapper</artifactId>
      <version>4.1.5</version>
    </dependency>

DAO层的接口Interface

cn.bjut.mapper.UserMapper

/**
 * 用户表的持久层接口
 */
@Repository  //IOC注入容器对象
//引入通用mapper启动器依赖后，DAO层接口继承Mapper<E>
public interface UserMapper extends Mapper<User> {

    /**
     * 更新用户信息是第3个业务用到的方法，其它2个查询用继承Mapper<E>接口的方法。
     */
    @Update({"update user set username=#{username},password=#{password},",
             "age=#{age},sex=#{sex},email=#{email} where id=#{id}"})
    void updateUser(User user);  //接口方法的public关键字可以省略
}

数据库实体类

cn.bjut.domain.User

package cn.bjut.domain;


import tk.mybatis.mapper.annotation.KeySql;

import javax.persistence.Id;
import javax.persistence.Table;
import java.io.Serializable;

/**
 * 用户表的实体类
 */
@Table(name = "user")
public class User implements Serializable {
    @Id
    @KeySql(useGeneratedKeys = true)
    private Integer id;
    private String username;
    private String password;
    private Integer age;
    private String sex;
    private String email;
    //不是表中字段的属性必须加@Transient注解
    //=========省略get/set方法和toString()===========//

MyBatis

通用 MAPPER 3

MyBatis-Spring配置简单了解
    
    <bean id="mapperScanner" class="tk.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.bjut.mapper"/>
    </bean>
在applicationContext.xml里面，用上面的通用mapper接口扫描器替换 mybatis-spring的官方接口代理扫描器。

Service层的实现类

cn.bjut.service.impl.UserServiceImpl

@Service
//@Transactional  本次SSM整合案例使用XML配置AOP的方式
public class UserServiceImpl implements IUserService {
    @Autowired
    UserMapper userMapper;

    @Override
    public List<User> findAll() {
        return userMapper.selectAll();
    }

    @Override
    public User findById(Integer userId) {
        return userMapper.selectByPrimaryKey(userId);
    }

    @Override
    public void updateUser(User user) {
        userMapper.updateUser(user);
        //一个成员方法的返回类型是void，
        //可以省略return; 的关键字。
    }
}

20案例-导入spring配置文件并编写测试类测试

配置文件在resources目录：

SSM框架整合数据源的

db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/leyou?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=root

控制台日志输出的

log4j.properties

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE, LOGFILE          debug   info   warn error fatal
log4j.rootCategory=debug, CONSOLE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m


# LOGFILE is set to be a File appender using a PatternLayout.
# log4j.appender.LOGFILE=org.apache.log4j.FileAppender
# log4j.appender.LOGFILE.File=d:axis.log
# log4j.appender.LOGFILE.Append=true
# log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
# log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m

spring整合mybatis的控制事务和IOC容器注入的文件

applicationContext.xml

制定扫包规则，不扫描@Controller 注解的 JAVA 类

<?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="cn.bjut">
        <!--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>
    <!--DAO层配置文件开始-->
    <!-- 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 c3p0连接池 -->
    <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，生成包下所有接口的代理对象，并且放入spring容器中 -->
    <!--<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.bjut.mapper"/>
    </bean>-->
    <!--service层配置文件开始-->
    <!--<tx:annotation-driven/>-->
    <!-- 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>
            <!-- 传播行为 -->
            <tx:method name="*" propagation="REQUIRED" read-only="false"/>
            <tx:method name="update*" propagation="REQUIRED" read-only="false"/>
            <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="select*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
        </tx:attributes>
    </tx:advice>
    <!-- 配置aop切面 -->
    <aop:config>
        <!-- 配置切入点表达式-->
        <aop:pointcut expression="execution(* cn.bjut.service.impl.*.*(..))" id="pt1"/>
        <!--建立切入点表达式和事务通知的对应关系 -->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt1"/>
    </aop:config>
    <!-- 配置 通用Mapper3 的扫描器，生成DAO层接口包下所有接口的代理对象，并且放入spring容器中 -->
    <bean id="mapperScanner" class="tk.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.bjut.mapper"/>
    </bean>

</beans>

Spring整合JUnit4的测试类

cn.bjut.test.UserTest

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext.xml")
public class UserTest {

    @Autowired
    private IUserService userService;

    @Test
    public void testFindAll(){
        List<User> users = userService.findAll();
        System.out.println(users);
    }
    @Test
    public void testFindById(){
        User user = userService.findById(1);
        System.out.println(user);
    }
    @Test
    public void testUpdate(){
        User user1 = userService.findById(1);
        System.out.println("修改之前的用户"+ user1);

        user1.setAge(10);
        userService.updateUser(user1);

        user1 = userService.findById(1);
        System.out.println("修改之后的用户"+ user1);

    }
}

使用Navicat12.1.22连接mysql数据库查看结果，提交事务后和预期结果一致。证明我们整合通用mapper插件在spring下的业务代码编写正确。

21案例-导入springmvc的配置并编写控制器代码

把前端页面的静态资源css、img、js、plugins文件夹拷贝到webapp目录下：

在WEB-INF里面的 web.xml

配置spring的监听器和springMVC的前端控制器等内容。

<?xml version="1.0" encoding="UTF-8"?>
<!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 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
  <display-name>Marlon.Kang</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>
  <!-- springMVC的前端控制器（服务器启动创建servlet） -->
  <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，解决.POST中文乱码过滤器  -->
  <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="cn.bjut">
        <!-- 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>
    <!-- 扫描controller的注解，别的不扫描 -->
    <!--<context:component-scan base-package="cn.bjut.web.controller"/>-->

    <!--开启对SpringMVC注解的支持：处理器映射器，处理器适配器-->
    <mvc:annotation-driven/>

    <!--释放静态资源，哪些静态资源不拦截-->
    <mvc:resources location="/css/" mapping="/css/**"/>
    <mvc:resources location="/img/" mapping="/images/**"/>
    <mvc:resources location="/js/" mapping="/js/**"/>
    <mvc:resources location="/plugins/" mapping="/plugins/**" />

    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- JSP文件所在的目录 -->
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

WEB视图层

cn.bjut.web.controller.UserController

@Controller
@RequestMapping("/user")
@ResponseBody  //返回页面JSON格式字符串
public class UserController {
    @Autowired
    private IUserService userService;
    @RequestMapping("/findAll")
    public List<User> findAll(){
        return userService.findAll();
    }
    @RequestMapping("/findById")
    public User findById(Integer id){
        return userService.findById(id);
    }
    @RequestMapping("/updateUser")
    public void updateUser(User user){
        userService.updateUser(user);
    }

}

==============================

参考资料：

https://mapperhelper.github.io/docs/

记录火狐浏览器的一些开发使用总结

end

部分内容来自于学习编程期间收集于网络的免费分享资源和工作后购买的付费内容。

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原文地址：https://www.cnblogs.com/MarlonKang/p/11630589.html