springboot+mybatis多数据源mysql+oracle

一、异常错误处理：

1.jdbcUrl is required with driverClassName这行错误，一直报我的mybatis的xml文件的问题，其实并没有关系，主要原因是jdbcUrl的问题
2019-04-25 13:50:12.644 ERROR 14660 — [nio-8080-exec-1] com.zaxxer.hikari.HikariConfig : HikariPool-1 - jdbcUrl is required with driverClassName.
2019-04-25 13:50:12.654 ERROR 14660 — [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
Error querying database. Cause: java.lang.IllegalArgumentException: jdbcUrl is required with driverClassName.
The error may exist in class path resource [mybatis/mapper/StudentMapper3.xml]
The error may involve cn.syp.databases.mapper.mapper3.StudentMapper3.findAll3
The error occurred while executing a query
Cause: java.lang.IllegalArgumentException: jdbcUrl is required with driverClassName.] with root cause

java.lang.IllegalArgumentException: jdbcUrl is required with driverClassName.

解决方案:

在properties的配置文件中，将自定义的datasource的url之前加上jdbc即可

spring.datasource.secondary3.driverClassName=oracle.jdbc.OracleDriver
spring.datasource.secondary3.jdbc-url=jdbc:oracle:thin:@localhost:1521:orcl
spring.datasource.secondary3.username=glmedical
spring.datasource.secondary3.password=glmedical

二、springboot+mybatis多数据源步骤如下：

提示：完全可以在已有springboot+mybatis项目的基础上进行，根本不和别的类有丁点冲突，在已有整合的项目基础上只需3小步骤。

application.properties需要将自动识别的spring.datasource改为自定义（就是加个自定义的字段给他改喽），例子在?
application.properties多加个自定义数据源，例子在?
有几个数据源就加几个数据源配置类，数据源配置类配置?

1. 构建springboot项目，项目构建不再提…
   文件目录：
   

2. dependence依赖引入

   <dependencies>
    <!--web相关依赖，-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!--mybatis和springboot整合依赖-->
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starte