SpringBoot-Properties

大樹下躲雨發表於2020-11-19

SpringBoot Demo 獲取配置檔案屬性

一、專案目錄結構

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二、配置檔案

1、主配置檔案:application.yml

server:
  port: 8080 #埠
  servlet:
    context-path: /properties #訪問路徑
spring:
  profiles:
    active: dashu #配置環境

2、環境配置檔案:application-dashu.yml

#配置環境引數
pom:
  name: @artifactId@
  version: @version@
  packaging: @packaging@
user:
  name: dashu
  website: https://blog.csdn.net/weixin_43521890?spm=1000.2115.3001.5113
  email: dashuplus@163.con

3、額外的spring配置後設資料:additional-spring-configuration-metadata.json

{
  "properties": [
    {
      "name": "pom.name",
      "description": "Default value is name in pom.xml.",
      "type": "java.lang.String"
    },
    {
      "name": "pom.version",
      "description": "Default value is version in pom.xml.",
      "type": "java.lang.String"
    },
    {
      "name": "pom.packaging",
      "description": "Default value is packaging in pom.xml.",
      "type": "java.lang.String"
    }
  ]
}

4、maven依賴檔案:pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.0</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.dashu</groupId>
    <artifactId>properties</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>properties</name>
    <packaging>jar</packaging>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--
		在 META-INF/additional-spring-configuration-metadata.json 中配置
		可以去除 application.yml 中自定義配置的紅線警告,並且為自定義配置新增 hint 提醒
		 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>

        <!--Lombok能以簡單的註解形式來簡化java程式碼,提高開發人員的開發效率。-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!--Hutool是一個小而全的Java工具類庫,
        通過靜態方法封裝,降低相關API的學習成本,
        提高工作效率,使Java擁有函式式語言般的優雅,
        讓Java語言也可以“甜甜的”。-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>4.5.11</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

三、專案檔案

1、啟動類:PropertiesApplication.java

package com.dashu.properties;

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.Environment;

import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * <p>
 * SpringBoot啟動類
 * </p>
 *
 * @package: com.dashu.properties
 * @description: SpringBoot啟動類
 * @author: dashu
 * @date: Created in 2020/11/19
 * @copyright: Copyright (c)
 * @version: V1.0
 * @modified: dashu
 */
@SpringBootApplication
@Slf4j
public class PropertiesApplication {

    public static void main(String[] args) throws UnknownHostException {
        ConfigurableApplicationContext application = SpringApplication.run(PropertiesApplication.class, args);
        Environment env = application.getEnvironment();
        //獲取本機ip
        String ip = InetAddress.getLocalHost().getHostAddress();
        //獲取配置檔案埠
        String port = env.getProperty("server.port");
        //獲取配置檔案專案啟動路徑
        String path = env.getProperty("server.servlet.context-path");
        //日誌輸出訪問路徑
        log.info("\n----------------------------------------------------------\n\t" +
                "Application helloword is running! Access URLs:\n\t" +
                "URL: \t\thttp://"+ip+":" + port + path + "\n\t" +
                "----------------------------------------------------------");
    }

}

2、配置實體類

(1)YmlProperty.java

package com.dashu.properties.entity;


import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

/**
 * <p>
 * yml主配置屬性實體類
 * </p>
 *
 * @package: com.dashu.properties.entity
 * @description: 主配置屬性
 * @author: dashu
 * @date: Created in 2020/11/19
 * @copyright: Copyright (c)
 * @version: V1.0
 * @modified: dashu
 */
@Data
@Component
public class YmlProperty {

    @Value("${user.name}")
    private String name;

    @Value("${user.website}")
    private String website;

    @Value("${user.email}")
    private String email;
}

(2)PomProperty.java

package com.dashu.properties.entity;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * <p>
 * pom.xml依賴屬性實體類
 * </p>
 *
 * @package: com.dashu.properties.entity
 * @description: 依賴屬性
 * @author: dashu
 * @date: Created in 2020/11/19
 * @copyright: Copyright (c)
 * @version: V1.0
 * @modified: dashu
 */
@Data
@Component
@ConfigurationProperties(prefix = "pom")
public class PomProperty {

    private String name;

    private String version;

    private String packaging;


}

3、訪問控制類:PropertyController.java

package com.dashu.properties.controller;

import cn.hutool.core.lang.Dict;
import com.dashu.properties.entity.PomProperty;
import com.dashu.properties.entity.YmlProperty;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


/**
 * <p>
 * 訪問控制類
 * </p>
 *
 * @package: com.dashu.properties.controller
 * @description: 訪問控制類
 * @author: dashu
 * @date: Created in 2020/11/19
 * @copyright: Copyright (c)
 * @version: V1.0
 * @modified: dashu
 */
@RestController
@Slf4j
public class PropertyController {

    private final PomProperty pomProperty;

    private final YmlProperty ymlProperty;

    /**
     * 構造方法注入元件
     * @param pomProperty
     * @param ymlProperty
     */
    @Autowired
    public PropertyController(PomProperty pomProperty, YmlProperty ymlProperty) {
        this.pomProperty = pomProperty;
        this.ymlProperty = ymlProperty;
    }

    @GetMapping("getProperty")
    public Dict property(){
        log.info("pom:"+ pomProperty);
        log.info("yml:"+ ymlProperty);
        return Dict.create().set("pom", pomProperty).set("yml", ymlProperty);
    }

}

四、執行

1、專案啟動

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2、訪問介面

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3、返回資料格式化

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