hikari连接池 报错 No converter found capable of converting from type [java.lang.String] to type [java.lang.Class<javax.sql.DataSource>]

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### 今天配置hikari后犯了一个低级错误
```java
***************************
APPLICATION FAILED TO START
***************************

Description:

Failed to bind properties under 'spring.datasource.type' to java.lang.Class<javax.sql.DataSource>:

Property: spring.datasource.type
    Value: com.zaxxer.hikari.HikariDataSource
    Origin: "spring.datasource.type" from property source "bootstrapProperties"
    Reason: No converter found capable of converting from type [java.lang.String] to type [java.lang.Class<javax.sql.DataSource>]

Action:

Update your application's configuration
```
### 原因是没有引用hikari连接池
```java

<dependency>
    <groupId>com.zaxxer</groupId>
    <artifactId>HikariCP</artifactId>
    <version>3.2.0</version>
</dependency>

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.6</version>
</dependency>
```

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hikari连接池报错 No converter found capable of converting from type [java.lang.String] to type [java.lang.Class<javax.sql.DataSource>]

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hikari连接池 报错 No converter found capable of converting from type [java.lang.String] to type [java.lang.Class<javax.sql.DataSource>]

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hikari连接池报错 No converter found capable of converting from type [java.lang.String] to type [java.lang.Class<javax.sql.DataSource>]