Spring boot 項目 入門 （1）

1、IDEA 創建項目：參考

2、maven 更新jar緩慢問題：

項目右鍵->maven -> create setting.xml 或者 open setting.xml 文件替換一下內容:

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
    <mirrors>
        <!-- mirror
         | Specifies a repository mirror site to use instead of a given repository. The repository that
         | this mirror serves has an ID that matches the mirrorOf element of this mirror. IDs are used
         | for inheritance and direct lookup purposes, and must be unique across the set of mirrors.
         |
        <mirror>
          <id>mirrorId</id>
          <mirrorOf>repositoryId</mirrorOf>
          <name>Human Readable Name for this Mirror.</name>
          <url>http://my.repository.com/repo/path</url>
        </mirror>
         -->

        <mirror>
            <id>alimaven</id>
            <name>aliyun maven</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <mirrorOf>central</mirrorOf>
        </mirror>

        <mirror>
            <id>uk</id>
            <mirrorOf>central</mirrorOf>
            <name>Human Readable Name for this Mirror.</name>
            <url>http://uk.maven.org/maven2/</url>
        </mirror>

        <mirror>
            <id>CN</id>
            <name>OSChina Central</name>
            <url>http://maven.oschina.net/content/groups/public/</url>
            <mirrorOf>central</mirrorOf>
        </mirror>

        <mirror>
            <id>nexus</id>
            <name>internal nexus repository</name>
            <!-- <url>http://192.168.1.100:8081/nexus/content/groups/public/</url>-->
            <url>http://repo.maven.apache.org/maven2</url>
            <mirrorOf>central</mirrorOf>
        </mirror>

    </mirrors>
</settings>

3、Cannot access alimaven (http://maven.aliyun.com/nexus/content/groups/public/) in offline ：

setting->maven-> work offline 去掉勾選

4、出現如下的異常：org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: The server time zone value '�й���׼ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.

添加最後的時區：url: jdbc:mysql://127.0.0.1:3306/springdb?serverTimezone=UTC