SpringBoot 外部配置
2021-06-10 21:03
标签：new not 地方 package 其他 项目 code 查找文件 features 本篇文章主要介绍SpringBoot 配置相关内容。如果文章中有错误或不明确的地方，请大家望指正，谢谢！ https://docs.spring.io/spring-boot/docs/2.3.7.RELEASE/reference/html/spring-boot-features.html#boot-features-external-config 配置随机值 application.yaml my: Application.java 启动后输入内容如下 my.bignumber->-6342504894010926224 命令行参数 SpringApplication转换参数要求以两个横杠开头（--），会添加到Spring Environment中 启动参数配置上添加如下内容 Runner.java 追加如下 输入如下内容： 禁用命令行参数 输出： 应用属性文件 SpringBoot 默认加载属性文件 application.properties；会从一下位置查找文件 优先级从高到低（高优先级会覆盖低优先级的值） 创建application.yaml文件 项目根目录下application.yaml 项目根目录的config目录下 项目resources目录下 项目resources的子目录config目录下 file: Runner.java 输出结果： 如果不喜欢用application.yaml这样的配置文件命名，可以通过spring.config.name来配置；位置也可以通过spring.config.location来指定 SpringBoot 外部配置 标签：new not 地方 package 其他 项目 code 查找文件 features 原文地址：https://www.cnblogs.com/9wan/p/14239854.htmlRandomValuePropertySource 可以用于注入随机值，要求属性中配置必须以 random开头；
bignumber: ${random.long}
number: ${random.int}
number.in.range: ${random.int[1024,1025]}
number.less.than.ten: ${random.int(8,10)}
secret: ${random.value}
uuid: ${random.uuid}
str: ${random.str}
package com.wm8.logging;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
Runner.java
package com.wm8.logging;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;
@Component
public class Runner implements ApplicationRunner {
@Autowired
Environment environment;
@Override
public void run(ApplicationArguments args) throws Exception {
String property1 = environment.getProperty("my.bignumber");
String property2 = environment.getProperty("my.number");
String property3 = environment.getProperty("my.number.in.range");
String property4 = environment.getProperty("my.number.less.than.ten");
String property5 = environment.getProperty("my.secret");
String property6 = environment.getProperty("my.uuid");
System.out.println("my.bignumber->"+property1);
System.out.println("my.number->"+property2);
System.out.println("my.number.in.range->"+property3);
System.out.println("my.number.less.than.ten->"+property4);
System.out.println("my.secret->"+property5);
System.out.println("my.uuid->"+property6);
}
}
my.number->-1804922465
my.number.in.range->1024
my.number.less.than.ten->9
my.secret->2911b6d4147c57529ac276a4649d2c3b
my.uuid->a246af3e-05cc-419c-8d45-cc317dc132b7
my.str->7a89f88906daf2c83c0c5ee886b89ac1--cmd-param="I‘M CMD PARAM"
System.out.println("------命令行参数-------");
String property8 = environment.getProperty("cmd-param");
System.out.println("cmd param ->"+property8);
------命令行参数-------
cmd param ->I‘M CMD PARAM
package com.wm8.logging;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication springApplication = new SpringApplication(Application.class);
springApplication.setAddCommandLineProperties(false);
springApplication.run(args);
}
}
------命令行参数-------
cmd param ->null
file:
location: "当前目录下"
file:
location: "当前目录下的config子目录"
file:
location: "类路径"
location: "类路径的config目录"
name: "来自类路径下的config目录" package com.wm8.logging;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;
@Component
public class Runner implements ApplicationRunner {
@Autowired
Environment environment;
@Override
public void run(ApplicationArguments args) throws Exception {
String property1 = environment.getProperty("file.location");
System.out.println("file location ->"+property1);
String property2 = environment.getProperty("file.name");
System.out.println("file name ->"+property2);
}
}
file location ->当前目录下的config子目录
file name ->来自类路径下的config目录
$ java -jar myproject.jar --spring.config.name=myproject
$ java -jar myproject.jar --spring.config.location=classpath:/default.properties,classpath:/override.properties
spring.config.name和spring.config.location必须很早进行定义。
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