1、配置文件内容
spring.datasource.url=jdbc:mysql://localhost:3306/satellite_resource?characterEncoding=utf8&serverTimezone=Asia/Shanghai spring.datasource.username=root spring.datasource.password=123456 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
2、创建类
package com.example.demo.user; import lombok.Data; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; @ConfigurationProperties(prefix = "spring.datasource") @Component @Data public class DatasourcePro { private String url; private String username; private String password; // 配置文件中是driver-class-name, 转驼峰命名便可以绑定成 private String driverClassName; }
3、用法
package com.example.demo.user; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import java.util.HashMap; import java.util.Map; @RestController @RequestMapping(value = "/config") public class ConfigurationPropertiesController { @Autowired private DatasourcePro datasourcePro; @GetMapping("/test") public Map<String, Object> test() { Map<String, Object> map = new HashMap<>(); map.put("url", datasourcePro.getUrl()); map.put("userName", datasourcePro.getUsername()); map.put("password", datasourcePro.getPassword()); map.put("className", datasourcePro.getDriverClassName()); return map; } }
4、结果
访问:http://localhost:9110/config/test
{
"password": "123456",
"className": "com.mysql.cj.jdbc.Driver",
"userName": "root",
"url": "jdbc:mysql://localhost:3306/satellite_resource?characterEncoding=utf8&serverTimezone=Asia/Shanghai"
}