一、配置文件加载
1、Controller中配置并指向文件
@Controller
@PropertySource(value = { "application.properties" })//指定配置文件2、在变量上打注解并指明配置文件中的key
@Value("${web.upload.filepath}")//获取配置文件中的配置参数
private String filePath;二、实体类配置文件
1、添加@Component//文件扫描注解
2、使用@PropertySource({"classpath:jdbc.properties"}) //指定配置文件的位置
3、使用@ConfigurationProperties 或者 @ConfigurationProperties(prefix="jdbc")//前缀,设置相关的属性;
4、使用@Autowired//通过IOC对象自动注入
示例-新建实体类如下:
package cn.xiaobing.demo.pojo;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
@Component//文件扫描
@PropertySource({"classpath:jdbc.properties"})
//@ConfigurationProperties
@ConfigurationProperties(prefix="jdbc")//前缀
public class JDBCSettings {
//@Value("${jdbc.driver}")
//如果属性命名和配置文件中配置name一致就不需要声明@Value("${jdbc.driver}")
private String driver;
private String url;
private String username;
private String password;
public String getDriver() {
return driver;
}
public void setDriver(String driver) {
this.driver = driver;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public JDBCSettings(String driver, String url, String username, String password) {
super();
this.driver = driver;
this.url = url;
this.username = username;
this.password = password;
}
public JDBCSettings() {
super();
}
@Override
public String toString() {
return "JDBCSetting [driver=" + driver + ", url=" + url + ", username=" + username + ", password=" + password
+ "]";
}
}jdbc.properties文件配置信息
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/future?useUnicode=true&characterEncoding=utf-8
jdbc.username=Administrator1
jdbc.password=123456Controller编码
@RestController
public class GetController {
@Autowired//通过IOC对象自动注入进来
private JDBCSettings jdbcSettings;
@GetMapping("/v1/getJdbcProperties")
public Object getJDBCProperties() {
return jdbcSettings;
}
}启动项目访问:

三、不足之处,后续补充。。。
















