小编给大家分享一下SpringBoot加载子模块配置文件的案例分析,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!
这两天开始学习SpringBoot框架,按照官方的文档,很轻易地就把单模块的项目启动了,但在使用maven搭建多模块的时候遇到了子模块配置文件没有加载的问题
项目架构是这样的
zero |-ws |-service |-dao |-entity
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<dependencies>
<dependency>
<groupId>cn.xmcui.zero</groupId>
<artifactId>service</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<!--指定该class为全局唯一入口-->
<mainClass>cn.xmcui.zero.Application</mainClass>
<fork>true</fork>
<layout>ZIP</layout>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
ws的application.yml
server:
port: 80
servlet:
session:
timeout: 60
tomcat:
uri-encoding: utf-8
<dependencies>
<dependency>
<groupId>cn.xmcui.zero</groupId>
<artifactId>entity</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
</dependencies>
application.yml
spring:
datasource:
url: jdbc:mysql://localhost:3306/zero?useUnicode=true&characterEncoding=utf-8&useSSL=false
username: root
password: root
driver-class-name: com.mysql.jdbc.Driver
mybatis:
mapper-locations: classpath:mapper/*.xml
type-aliases-package: cn.xmcui.zero.entity
@SpringBootApplication(scanBasePackages = "cn.xmcui.zero")
@MapperScan(basePackages = "cn.xmcui.zero.mapper")
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
然后是喜闻乐见的报错
***************************
APPLICATION FAILED TO START
***************************
Description:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
Action:
Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
没有找到数据库的配置文件
找错的过程很痛苦,找了很多资料,走了很多弯路,最后将dao层的application.yml全部剪切到ws的application.yml中,项目点亮,成功运行.这就明确到dao层的配置文件没有被加载.
然后找到了加载配置文件的方法:
我将ws层application.yml重命名为application-dev.yml;将dao层配置文件重命名为application-dao.yml(让配置文件不重名,需要注意,配置文件重命名后必须以application-做前缀);
在ws层再新建一个application.yml
spring:
profiles:
active: dao,dev
这条配置是指定加载哪些配置文件
操作完成,系统成功点亮
本来是很简单的问题,却浪费了我很长的时间,还有一件事情必须要吐槽一下,现在SpringBoot相关的博客质量真是良莠不齐,相当数量的人还是把它当SpringMvc用;使用它,却不用它的新特性,真的是毫无意义啊.
以上是SpringBoot加载子模块配置文件的案例分析的所有内容,感谢各位的阅读!相信大家都有了一定的了解,希望分享的内容对大家有所帮助,如果还想学习更多知识,欢迎关注亿速云行业资讯频道!
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