Springboot使用@RefreshScope注解实现配置文件的动态加载
spring-boot-starter-actuator提供服务健康检查和暴露内置的url接口。
spring-cloud-starter-config提供动态刷新的一些支持和注解。
pom.xml
<?xml version="1.0" encoding="UTF-8"?> <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0" 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>2.4.6</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.xiaobu</groupId> <artifactId>demo-for-mybatis-plus</artifactId> <version>0.0.1-SNAPSHOT</version> <name>demo-for-mybatis-plus</name> <description>demo-for-mybatis-plus</description> <properties> <java.version>1.8</java.version> <spring-cloud.version>2020.0.3</spring-cloud.version> </properties> <dependencies> <!--spring boot--> <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> <exclusions> <exclusion> <artifactId>asm</artifactId> <groupId>org.ow2.asm</groupId> </exclusion> </exclusions> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.4.2</version> </dependency> <!-- lomback --> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.10</version> </dependency> <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.3.2</version> </dependency> <!-- 引入Swagger2依赖 --> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.9.2</version> <exclusions> <exclusion> <artifactId>guava</artifactId> <groupId>com.google.guava</groupId> </exclusion> </exclusions> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.9.2</version> </dependency> <!-- https://mvnrepository.com/artifact/com.google.guava/guava --> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>29.0-jre</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>easyexcel</artifactId> <version>2.0.2</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> </dependency> <dependency> <groupId>com.xuxueli</groupId> <artifactId>xxl-job-core</artifactId> <version>2.3.0</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <!-- spring-cloud config--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <!-- springcloud 高版本需要引入 spring-cloud-starter-bootstrap 否则刷新不起效--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-bootstrap</artifactId> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <resources> <resource> <directory>src/main/resources</directory> </resource> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> </resources> <finalName>App</finalName> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.4.5</version> </plugin> </plugins> </build> </project>
properties
########## Mybatis 自身配置 ########## logging.level.com.xiaobu=debug mybatis-plus.type-aliases-package=com.xiaobu.entity mybatis-plus.mapper-locations=classpath:com/xiaobu/mapper/xml/*.xml # 控制台打印sql 带参数 无法写入文件 #mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl # 将sql 写入文件 带参数 mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.slf4j.Slf4jImpl #集成mysql数据库的配置 spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/master0?useSSL=false&useUnicode=true&characterEncoding=utf-8&autoReconnect=true&serverTimezone=Asia/Shanghai spring.datasource.username=root spring.datasource.password=root #测试动态刷新配置 order.pay-timeout-seconds=9999 order.create-frequency-seconds=600 #暴露内置的刷新配置文件url,这个必须写,否则无法刷新配置文件 management.endpoints.web.exposure.include=refresh #management.endpoints.web.exposure.include=env,refresh#management.endpoints.web.exposure.include=env,refresh
启动类
package com.xiaobu; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.context.properties.ConfigurationPropertiesScan; /** * @author 小布 */ @SpringBootApplication @ConfigurationPropertiesScan public class DemoForMybatisPlusApplication { public static void main(String[] args) { SpringApplication.run(DemoForMybatisPlusApplication.class, args); } }
配置类
package com.xiaobu.config; import lombok.Data; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.cloud.context.config.annotation.RefreshScope; import org.springframework.stereotype.Component; /** * @author 小布 */ @Component @ConfigurationProperties(prefix = "order") @RefreshScope @Data public class OrderProperties { /** * 订单支付超时时长,单位:秒。 */ private Integer payTimeoutSeconds; /** * 订单创建频率,单位:秒 */ private Integer createFrequencySeconds; }
controller
package com.xiaobu.controller; import com.xiaobu.config.OrderProperties; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.cloud.context.config.annotation.RefreshScope; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; /** * The type Refresh controller. * * @author 小布 * @version 1.0.0 * @className RefreshController.java * @createTime 2021年09月06日 15:38:00 */ @RestController @RequestMapping("refresh") @RefreshScope public class RefreshController { @Autowired private OrderProperties orderProperties; @Value(value = "${order.pay-timeout-seconds}") private Integer payTimeoutSeconds; /** * Test string. * * @return the string */ @GetMapping("test") public String test() { return "payTimeoutSeconds:" + payTimeoutSeconds; } @GetMapping("test01") public String test01() { return orderProperties.toString(); } }
打包
执行
mvn clean package -Dmaven.test.skip=true
cmd启动jar 并指定外部配置文件
java -jar App.jar --spring.config.location=D:/application.properties
访问:http://localhost:8080/refresh/test
修改配置文件内容:
执行 POST http://localhost:8080/actuator/refresh
再次访问:http://localhost:8080/refresh/test
访问:http://localhost:8080/refresh/test01
springcloud对应的springboot版本
参考:
Springboot 使用@RefreshScope 注解,实现配置文件的动态加载
到此这篇关于Springboot使用@RefreshScope注解实现配置文件的动态加载的文章就介绍到这了,更多相关Springboot @RefreshScope配置文件动态加载内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!
相关文章
SSM使用mybatis分页插件pagehepler实现分页示例
本篇文章主要介绍了SSM使用mybatis分页插件pagehepler实现分页示例,使用分页插件的原因,简化了sql代码的写法,实现较好的物理分页,非常具有实用价值,需要的朋友可以参考下2018-03-03Spring中@EnableScheduling实现定时任务代码实例
这篇文章主要介绍了Spring中@EnableScheduling实现定时任务代码实例,@EnableScheduling 注解开启定时任务功能,可以将多个方法写在一个类,也可以分多个类写,当然也可以将方法直接写在上面ScheddulConfig类中,需要的朋友可以参考下2024-01-01Servlet+JavaBean+JSP打造Java Web注册与登录功能
比作MVC的话,控制器部分采用Servlet来实现,模型部分采用JavaBean来实现,而大部分的视图采用Jsp页面来实现,接下来我们就来详细看看如何用Servlet+JavaBean+JSP打造Java Web注册与登录功能2016-05-05
最新评论