配置多数据源出错

我想配置多数据源，添加一个SQL Server 数据库 ，根据 springboot-mybatis-mutil-datasource 项目的 数据源配置文件 的思路，总体代码如下

@Configuration
@MapperScan(basePackages = {"io.renren.modules.api.dao","io.renren.modules.job.dao","io.renren.modules.oss.dao","io.renren.modules.sys.dao"},sqlSessionFactoryRef = "masterSqlSessionFactory")
public class DruidConfig {
    static final String MAPPER_LOCATION = "classpath:mapper/**/*.xml";

    @Bean(name = "masterDataSource")
    @Primary
    public DataSource dataSource(){...}

    @Bean(name = "masterSqlSessionFactory")
    @Primary
    public SqlSessionFactory masterSqlSessionFactory(@Qualifier("masterDataSource") DataSource masterDataSource)throws Exception {
        final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(masterDataSource);
        sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
                .getResources(DruidConfig.MAPPER_LOCATION));
        return sessionFactory.getObject();
    }
}

但是遇到如下错误，无法启动

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobService': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: cronExpression cannot be null

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就算是注释掉io.renren.modules.job下@Configuration，@RestController，@RequestMapping

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可以启动，但还是无法登录。
是思路本身有问题，还是有其他配置要做。
注：没有修改application-dev.yml文件，也没有配置第二个数据源，只是尝试一下配置是否可行

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