今天看到同事的代碼，發(fā)現(xiàn)返回文件還是用的古老的方式

d82fbb390863cb87a81f98c45e78eb3.png

更優(yōu)雅的方式是使用spring的resource接口

import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.http.ContentDisposition;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
        ...
    @GetMapping("/image/{path}")
    public ResponseEntity<Resource> download(@PathVariable String path) {
        String contentDisposition = ContentDisposition
                .builder("attachment")
                .filename(path)
                .build().toString();
        return ResponseEntity.ok()
                .header(HttpHeaders.CONTENT_DISPOSITION, contentDisposition)
                .contentType(MediaType.IMAGE_JPEG)
                .body(new FileSystemResource(path));
    }

轉(zhuǎn)載必須附上原文鏈接