The elements [] were left unbound.

错误信息：

***************************
APPLICATION FAILED TO START
***************************

Description:

Binding to target [Bindable@7125333 type = , value = 'provided', annotations = array<Annotation>[@(prefix=application, value=application, ignoreUnknownFields=false, ignoreInvalidFields=false)]] failed:

    Property: -path
    Value: D:/demo
    Origin: "-path" from property source "applicationConfig: [classpath:/config/]"
    Reason: The elements [-path] were left unbound.

Action:

Update your application's configuration

解决办法：
首先看一下启动的配置文件是不是当前设置的值的文件，不要在dev里配置了upload-path启动的是prod的配置文件

然后在项目的config文件夹下新建java文件(如果有就不需要创建了)

import ;


@ConfigurationProperties(prefix = "application", ignoreUnknownFields = false)
public class ApplicationProperties {

	private String uploadPath;


	public String getUploadPath() {
		return uploadPath;
	}

	public void setUploadPath(String uploadPath) {
		 = uploadPath;
	}
	
}

这样，在其他类里就可以引用配置文件中配置的值了

public class serviceTest {
	@Value("${-path}")
    private String uploadPath;
}