弹簧靴&x2B；冬眠+；MySQL无法创建池的初始连接

下面是我的pom.xml，它是我从互联网上的大多数教程中复制的

<?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>my.com.froggy</groupId>
    <artifactId>froggy</artifactId>
    <version>0.0.1</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>My Project</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.0.Final</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

我犯了什么错？我得到了以下错误：

2016-09-25 22:58:18.297信息8452---[main] org.hibernate.Version:hh000412:hibernate核心 {5.0.11.最终版}2016-09-25 22:58:18.299信息8452-[
main]org.hibernate.cfg.Environment:hh000205:已加载 资源hibernate.properties的属性： {spring.datasource.username=root， spring.datasource.testWhileIdle=true， spring.datasource.timebetweenvictionrunsmillis=60000， spring.datasource.password=， spring.datasource.url=jdbc:mysql://127.0.0.1/test, hibernate.bytecode.use\u reflection\u optimizer=false， spring.datasource.validationQuery=SELECT 1， spring.jpa.hibernate.ddl auto=create drop}2016-09-25 22:58:18.300 信息8452---[main]org.hibernate.cfg.Environment
：hh000021:字节码提供程序名称：javassist 2016-09-25 22:58:18.353信息8452---[主要] o、 hibernate.annotations.common.Version:HCANN000001:hibernate Commons注解{5.0.1.最终版本}2016-09-25 22:58:19.706错误8452 ---[main]o.a.tomcat.jdbc.pool.ConnectionPool:无法创建池的初始连接

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException： 通信链路故障

成功发送到服务器的最后一个数据包为0毫秒 以前驱动程序尚未从服务器收到任何数据包。在 sun.reflect.NativeConstructorAccessorImpl.newInstance0（本机方法） ~（na:1.8.0_102）at sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:62） ~（na:1.8.0_102）at sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45） ~（na:1.8.0_102）at newInstance（Constructor.java:423） ~（na:1.8.0_102）at com.mysql.jdbc.Util.HandleneInstance（Util.java:404） ~[mysql-connector-java-5.1.39.jar:5.1.39]at com.mysql.jdbc.SQLError.createCommunicationsException（SQLError.java:988） ~[mysql-connector-java-5.1.39.jar:5.1.39]at MysqlIO.（MysqlIO.java:341） ~[mysql-connector-java-5.1.39.jar:5.1.39]at com.mysql.jdbc.ConnectionImpl.coreConnect（ConnectionImpl.java:2251） ~[mysql-connector-java-5.1.39.jar:5.1.39]at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly（ConnectionImpl.java:2284） ~[mysql-connector-java-5.1.39.jar:5.1.39]at com.mysql.jdbc.ConnectionImpl.createNewIO（ConnectionImpl.java:2083） ~[mysql-connector-java-5.1.39.jar:5.1.39]at com.mysql.jdbc.ConnectionImpl.（ConnectionImpl.java:806） ~[mysql-connector-java-5.1.39.jar:5.1.39]at JDBC4Connection（JDBC4Connection.java:47） ~[mysql-connector-java-5.1.39.jar:5.1.39]at sun.reflect.NativeConstructorAccessorImpl.newInstance0（本机方法） ~（na:1.8.0_102）at sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:62） ~（na:1.8.0_102）at sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45） ~（na:1.8.0_102）at newInstance（Constructor.java:423） ~（na:1.8.0_102）at com.mysql.jdbc.Util.HandleneInstance（Util.java:404） ~[mysql-connector-java-5.1.39.jar:5.1.39]at com.mysql.jdbc.ConnectionImpl.getInstance（ConnectionImpl.java:410） ~[mysql-connector-java-5.1.39.jar:5.1.39]at com.mysql.jdbc.NonRegisteringDriver.connect（NonRegisteringDriver.java:328） ~[mysql-connector-java-5.1.39.jar:5.1.39]at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver（PooledConnection.java:310） ~[tomcat-jdbc-8.5.5.jar:na]at org.apache.tomcat.jdbc.pool.PooledConnection.connect（PooledConnection.java:203） ~[tomcat-jdbc-8.5.5.jar:na]at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection（ConnectionPool.java:718） [tomcat-jdbc-8.5.5.jar:na]at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection（ConnectionPool.java:650） [tomcat-jdbc-8.5.5.jar:na]at org.apache.tomcat.jdbc.pool.ConnectionPool.init（ConnectionPool.java:468） [tomcat-jdbc-8.5.5.jar:na]at org.apache.tomcat.jdbc.pool.ConnectionPool.（ConnectionPool.java:143） [tomcat-jdbc-8.5.5.jar:na]at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool（DataSourceProxy.java:118） [tomcat-jdbc-8.5.5.jar:na]at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool（DataSourceProxy.java:107） [tomcat-jdbc-8.5.5.jar:na]at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection（DataSourceProxy.java:131） [tomcat-jdbc-8.5.5.jar:na]at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection（DatasourceConnectionProviderImpl.java:122） [hibernate-core-5.0.11.Final.jar:5.0.11.Final] org.hibernate.engine.jdbc.env.internal.jdbconvironmentinitiator$connectionProviderjdbconnectionaccess.obtainConnection（jdbconvironmentinitiator.java:180） [hibernate-core-5.0.11.Final.jar:5.0.11.Final] org.hibernate.engine.jdbc.env.internal.jdbconvironmentinitiator.initiateService（jdbconvironmentinitiator.java:68） [hibernate-core-5.0.11.Final.jar:5.0.11.Final] org.hibernate.engine.jdbc.env.internal.jdbconvironmentinitiator.initiateService（jdbconvironmentinitiator.java:35） [hibernate-core-5.0.11.Final.jar:5.0.11.Final] org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService（StandardServiceRegistryImpl.java:88） [hibernate-core-5.0.11.Final.jar:5.0.11.Final] org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:254） [hibernate-core-5.0.11.Final.jar:5.0.11.Final] org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryIm

spring.datasource.url = jdbc:mysql://127.0.0.1/test 
spring.datasource.username = root 
spring.datasource.password = 

spring.jpa.hibernate.ddl-auto = create-drop

spring.datasource.testWhileIdle = true 
spring.datasource.timeBetweenEvictionRunsMillis = 60000 
spring.datasource.validationQuery = SELECT 1

spring.datasource.url=jdbc:mysql://localhost:3306/yourdb
spring.jpa.hibernate.ddl-auto=update
spring.datasource.username=root
spring.datasource.password=12345