SpringBoot加载子模块配置文件的细致引见（代码示例）【JAVA教程】,SpringBoot

本篇文章给人人带来的内容是关于SpringBoot加载子模块设置文件的细致引见（代码示例），有肯定的参考价值，有需要的朋侪能够参考一下，愿望对你有所协助。

这两天最先进修SpringBoot框架,根据官方的文档,很轻易地就把单模块的项目启动了,但在运用maven搭建多模块的时刻遇到了子模块设置文件没有加载的题目

项目架构是如许的

    zero
        |-ws
            |-service
                |-dao
                    |-entity

zero的依靠

<dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
  </dependencies>

ws的依靠和设置

<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>
          <!--指定该class为全局唯一进口-->
          <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的依靠和设置

<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

给启动器类加注解

@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);
    }
}

运转

然后是脍炙人口的报错

***************************
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).

没有找到数据库的设置文件

找错的历程很痛楚,找了许多材料,走了许多弯路,末了将dao层的application.yml悉数剪切到ws的application.yml中,项目点亮,胜利运转.这就明白到dao层的设置文件没有被加载.

然后找到了加载设置文件的要领:

我将ws层application.yml重命名为application-dev.yml;将dao层设置文件重命名为application-dao.yml(让设置文件不重名,需要注重,设置文件重命名后必需以application-做前缀);

在ws层再新建一个application.yml