java檔案

@RequestMapping("/download")
public ResponseEntity<byte[]> dowload() throws IOException{
    String path="D:/沈雪冰.png";
    File file=new File(path);
    String fileName=new String(file.getName().getBytes("utf-8"),"iso-8859-1"); //解決中文亂碼問題
    HttpHeaders headers=new HttpHeaders();
    headers.setContentDispositionFormData("attachment"
 
, fileName);// aatachment  附件
    headers.setContentType(MediaType.IMAGE_PNG);
    ResponseEntity<byte[]> entity=new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file), headers,HttpStatus.CREATED);
        return entity;
    }

springmvc.xml配置

<!-- 檔案上傳下載配置 -->
<bean id="multipartResolver"
 
 class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="500000"></property>
<property name="maxInMemorySize" value="50000"></property>
<property name="defaultEncoding" value="utf-8"></property>
</bean>

執行結果