创建一个maven的springboot项目:

maven项目引入spring boot依赖之后filter不生效的问题_spring

pom.xml如下:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.pp.test</groupId>
<artifactId>properties-test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>properties-test</name>
<url>http://maven.apache.org</url>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<java.version>1.8</java.version>
</properties>

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

<build>
<filters>
<filter>src/main/profiles/profile-${profiles.active}.properties</filter>
</filters>
<resources>
<resource>
<filtering>true</filtering>
<directory>src/main/resources</directory>
</resource>
</resources>
</build>


<profiles>
<profile>
<id>dev</id>
<properties>
<profiles.active>dev</profiles.active>
</properties>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
</profile>
<profile>
<id>test</id>
<properties>
<profiles.active>test</profiles.active>
</properties>
</profile>
<profile>
<id>prod</id>
<properties>
<profiles.active>prod</profiles.active>
</properties>
</profile>
</profiles>
</project>

application.properties如下:

jdbc.driverClassName=${jdbc.driverClassName}  
jdbc.url=${jdbc.url}
jdbc.username=${jdbc.username}
jdbc.password=${jdbc.password}

profile-dev.properties 文件内容:

jdbc.driverClassName=com.mysql.jdbc.Driver  
jdbc.url=jdbc:mysql:///db_users
jdbc.username=root
jdbc.password=root

使用mvn package -Pdev 打包后,application.propertes文件中内容没有被替换。

filtering无效的原因是,pom.xml继承了spring boot的依赖

<parent>  
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
</parent>

点开这个依赖的pom.xml,我们发现

maven项目引入spring boot依赖之后filter不生效的问题_spring_02


spring boot把默认的占位符号${}改成了@

找到原因了,那怎么解决就很简单了。

方法一:

在pom.xml里面添加如下内容

<properties>  
<resource.delimiter>${}</resource.delimiter>
</properties>

方法二:

application.properties里面不用${},改成@

jdbc.driverClassName=@jdbc.driverClassName@  
jdbc.url=@jdbc.url@
jdbc.username=@jdbc.username@
jdbc.password=@jdbc.password@

方法三:

pom.xml不继承spring-boot-starter-parent,dependency里面配置全部的依赖和版本号(继承了之后,很多依赖不用写version)

方法四:

<parent>  
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
</parent>

改成:

<dependencyManagement>  
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.5.9.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>