SpringBoot加載子模塊配置文件的方法
阿新 • • 發佈:2019-02-15
connect layout gmv nap reason 真的 .class side 項目
這兩天開始學習SpringBoot框架,按照官方的文檔,很輕易地就把單模塊的項目啟動了,但在使用maven搭建多模塊的時候遇到了子模塊配置文件沒有加載的問題
項目架構是這樣的
zero
|-ws
|-service
|-dao
|-entity
zero的依賴
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies>
ws的依賴和配置
<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> <!--指定該class為全局唯一入口--> <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
dao的依賴和配置
<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
給啟動器類加註解
@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);
}
}
運行
然後是喜聞樂見的報錯
***************************
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).
沒有找到數據庫的配置文件
找錯的過程很痛苦,找了很多資料,走了很多彎路,最後將dao層的application.yml
全部剪切到ws的application.yml
中,項目點亮,成功運行.這就明確到dao層的配置文件沒有被加載.
然後找到了加載配置文件的方法:
我將ws層application.yml
重命名為application-dev.yml
;將dao層配置文件重命名為application-dao.yml
(讓配置文件不重名,需要註意,配置文件重命名後必須以application-
做前綴);
在ws層再新建一個application.yml
spring:
profiles:
active: dao,dev
這條配置是指定加載哪些配置文件
操作完成,系統成功點亮
本來是很簡單的問題,卻浪費了我很長的時間,還有一件事情必須要吐槽一下,現在SpringBoot相關的博客質量真是良莠不齊,相當數量的人還是把它當SpringMvc用;使用它,卻不用它的新特性,真的是毫無意義啊.
參考文獻:
https://blog.csdn.net/cw_hello1/article/details/79639448
SpringBoot加載子模塊配置文件的方法