例在application.yml中添加:
upload:
# 是否壓縮圖片
is_compress: true
# 圖片默認縮放比率
DEFAULT_SCALE: 0.5d
# 測試
test: hh
如何獲取upload中的值呢?
一:在普通的的java類中獲取
@Value("${upload.test}")
private String test;
測試:
@GetMapping("/test")
@ResponseBody
public String test() {
return test;
}
其他同理。。在 @Value 中 upload.屬性即可
二:建一個實體類,加上如下兩個註解,即可讀取配置文件
is_compress,DEFAULT_SCALE兩個舉例
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties(prefix = "upload")
public class uploadConfig {
public boolean is_compress;
public double DEFAULT_SCALE;
public double getDEFAULT_SCALE() {
return DEFAULT_SCALE;
}
public void setDEFAULT_SCALE(double DEFAULT_SCALE) {
this.DEFAULT_SCALE = DEFAULT_SCALE;
}
public boolean isIs_compress() {
return is_compress;
}
public void setIs_compress(boolean is_compress) {
this.is_compress = is_compress;
}
}
調用:利用 @Autowired 注入後調用即可
@Autowired
private uploadConfig conn;
@GetMapping("/DEFAULT_SCALE")
@ResponseBody
public double DEFAULT_SCALE() {
return conn.DEFAULT_SCALE;
}
三:工具類中讀取
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
/**
* @ClassName 工具類直接讀取配置文件內容 靜態轉換
* @Author ckx
* @Date 2020/4/9 13:53
**/
@Component
public class JWTUtil {
public boolean is_compress;
public double DEFAULT_SCALE;
@Autowired
private uploadConfig uploadConfig;
/**
* 靜態方法想使要使用一個非靜態對象,需要做一個初始化【重要】
*/
@PostConstruct
public void init() {
is_compress = uploadConfig.isIs_compress();
DEFAULT_SCALE = uploadConfig.getDEFAULT_SCALE();
}
}
使用時直接 “JWTUtil.屬性” 即可
參考:
https://blog.csdn.net/weixin_36775115/article/details/79539811