pom.xml
1, Resources:
Resources are defined under the file directory which will be replaced with a variable defined in the configuration file, we will project the general configuration file in the src / main / resources, like db, bean and so on, which used the the filter variable will be arranged in variable during packaging alternative to a fixed value
Picture 1
filtering = true indicates that all properties file src / main / resources below placeholder will be replaced with the corresponding attribute value profile
Picture 2
filtering = false indicates src / main / resources all the following xml file placeholder will not be replaced with the corresponding attribute value profile
Picture 3
filtering = true indicates src / main / resources / META-INF / spring below the spring-comm-conf.xml file placeholder will be replaced with the attribute value defined in the profile, and the configuration of the file to targetPath under path
2、profiles：
id node only, when the project package, you need to specify
<activation>
<activeByDefault>true</activeByDefault>
</activation>
Change a node is set as the default profile selected
Use the command maven package
mvn clean -Dmaven.test.skip=true package -P dev
Wherein -P dev, dev profile is specified id, maven profile information may be used operating system, JDK information file exists, attribute values, etc. as a basis, to activate the corresponding profile, but also in the compilation phase, by adding the command mvn -PprofileId parameters to manually activate the corresponding profile using the
binding profile and filter, we can easily use different formulations under different conditions
3, packing
在执行打包命令时，maven会到src/main/resources下寻找*.properties类型的文件，将pom定义的key替换到properties文件对应的${value}。
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