方案一 (解決原因1)

排除此類的autoconfig。啟動以后就可以正常運行。

@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})

方案二 (解決原因2)

在application.properties/或者application.yml文件中沒有添加數(shù)據(jù)庫配置信息.

spring:

  datasource:

    url: jdbc:mysql://localhost:3306/read_data?useUnicode=true&characterEncoding=UTF-8&useSSL=false

    username: root

    password: 123456

    driver-class-name: com.mysql.jdbc.Driver

方案三 (解決原因3)

在spring xml配置文件中引用了數(shù)據(jù)庫地址 所以需要對:等進行轉(zhuǎn)義處理.但是在application.properties/或者application.yml文件并不需要轉(zhuǎn)義,錯誤和正確方法寫在下面了.

//錯誤示例

spring.datasource.url = jdbc:mysql\://192.168.0.20\:1504/f_me?setUnicode=true&characterEncoding=utf8

//正確示例

spring.datasource.url = jdbc:mysql://192.168.0.20:1504/f_me?setUnicode=true&characterEncoding=utf8

方案四 (解決原因4)

yml或者properties文件沒有被掃描到,需要在pom文件中<build></build>添加如下.來保證文件都能正常被掃描到并且加載成功.

<!-- 如果不添加此節(jié)點mybatis的mapper.xml文件都會被漏掉。 -->

<resources>

    <resource>

        <directory>src/main/java</directory>

        <includes>

            <include>**/*.yml</include>

            <include>**/*.properties</include>

            <include>**/*.xml</include>

        </includes>

        <filtering>false</filtering>

    </resource>

    <resource>

        <directory>src/main/resources</directory>

        <includes>

            <include>**/*.yml</include>

            <include>**/*.properties</include>

            <include>**/*.xml</include>

        </includes>

        <filtering>false</filtering>

    </resource>

</resources>