Springboot reading configuration files and custom profiles

1. Create a MAVEN project to add dependencies to the Pom file

1<parent>2<groupId>org.springframework.boot</groupId>3<artifactId>spring-boot-starter-parent</artifactId>4<version>1.5.9.RELEASE</version>5</parent>6 7<dependencies>8<dependency>9<groupId>org.springframework.boot</groupId>Ten<artifactId>spring-boot-starter-web</artifactId> One</dependency> A<!--unit tests using- -<dependency> -<groupId>org.springframework.boot</groupId> the<artifactId>spring-boot-starter-test</artifactId> -</dependency> -    -<dependency> +<groupId>junit</groupId> -<artifactId>junit</artifactId> +<scope>test</scope> A</dependency> at     -</dependencies>

2. Create a project startup class Startapplication.java

1  PackageCom.kelly.controller;2 3 Importorg.springframework.boot.SpringApplication;4 Importorg.springframework.boot.autoconfigure.EnableAutoConfiguration;5 ImportOrg.springframework.context.annotation.ComponentScan;6 Importorg.springframework.context.annotation.Configuration;7 8 @Configuration9@EnableAutoConfiguration//automatically load configuration informationTen@ComponentScan ("com.kelly")//enables classes with annotations under the package path to use @autowired auto-injection One  Public classstartapplication { A      Public Static voidMain (string[] args) { -Springapplication.run (startapplication.class, args); -     } the}

3. Edit the configuration file application.properties and custom profile define.properties

　　Application.properties

#访问的根路径server. Context-path=/springboot# port number server.port=8081#session失效时间server. session -timeout=30#编码server. Tomcat.uri-encoding=utf-8test.name=Kellytest.password= Admin123

　Define.properties

Definetest.pname=Testdefinetest.password=test123

4. Read the property values in the Application.properties configuration file

Firstcontroller.java

1  PackageCom.kelly.controller;2 3 ImportOrg.springframework.beans.factory.annotation.Value;4 ImportOrg.springframework.stereotype.Controller;5 Importorg.springframework.web.bind.annotation.RequestMapping;6 ImportOrg.springframework.web.bind.annotation.ResponseBody;7 8 9 @ControllerTen  Public classFirstcontroller { One      A@Value ("${test.name}") -     PrivateString name; -      the@Value ("${test.password}") -     PrivateString password; -      -@RequestMapping ("/") + @ResponseBody - String Home () +     { A         return"Hello springboot!"; at     } -      -@RequestMapping ("/hello") - @ResponseBody - String Hello () -     { in         return"Name:" + name + "," + "Password:" +password; -     } to}

5. Open the browser and enter Http://localhost:8081/springboot/hello to see the results

6. Read the custom configuration file using Java Bean define.properties

Defineentity.java

1  Packagecom.kelly.entity;2 3 Importorg.springframework.boot.context.properties.ConfigurationProperties;4 ImportOrg.springframework.context.annotation.PropertySource;5 Importorg.springframework.stereotype.Component;6 7 @Component8@ConfigurationProperties (prefix= "Definetest")9@PropertySource ("Classpath:define.properties")Ten  Public classdefineentity { One      A     PrivateString pname; -      -     PrivateString password; the  -      PublicString Getpname () { -         returnpname; -     } +  -      Public voidsetpname (String pname) { +          This. pname =pname; A     } at  -      PublicString GetPassword () { -         returnpassword; -     } -  -      Public voidSetPassword (String password) { in          This. Password =password; -     } to      +      -}

Secondcontroller.java

1  PackageCom.kelly.controller;2 3 Importorg.springframework.beans.factory.annotation.Autowired;4 ImportOrg.springframework.stereotype.Controller;5 Importorg.springframework.web.bind.annotation.RequestMapping;6 ImportOrg.springframework.web.bind.annotation.ResponseBody;7 8 Importcom.kelly.entity.DefineEntity;9 Ten @Controller One  Public classSecondcontroller { A      - @Autowired - defineentity defineentity; the      -@RequestMapping ("/define") - @ResponseBody - String define () +     { -         return"Test.name:" + defineentity.getpname () + ", Test.password:" +Defineentity.getpassword (); +     } A}

7. Open the browser, access the Http://localhost:8081/springboot/define, you can see the output results

Add: The directory structure of my project

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Springboot reading configuration files and custom profiles