本篇文章为大家展示了使用Feign怎么实现微服务间文件下载,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。
feign_upload_first服务提供者
服务提供者下载文件接口
@RequestMapping(value = "/downloadFile",method = RequestMethod.GET,consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
public void downloadFile(HttpServletResponse response){
String filePath = "D://1.txt";
File file = new File(filePath);
InputStream in = null;
if(file.exists()){
try {
OutputStream out = response.getOutputStream();
in = new FileInputStream(file);
byte buffer[] = new byte[1024];
int length = 0;
while ((length = in.read(buffer)) >= 0){
out.write(buffer,0,length);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if(in != null){
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
三、feign_upload_second服务消费者
服务提供者远程调用接口
@RequestMapping(value = "/downloadFile",method = RequestMethod.GET,consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
Response downloadFile();
用feign.Response来接收
服务提供者下载文件接口
@RequestMapping(value = "/download",method = RequestMethod.GET)
public ResponseEntity<byte[]> downFile(){
ResponseEntity<byte[]> result=null ;
InputStream inputStream = null;
try {
// feign文件下载
Response response = uploadService.downloadFile();
Response.Body body = response.body();
inputStream = body.asInputStream();
byte[] b = new byte[inputStream.available()];
inputStream.read(b);
HttpHeaders heads = new HttpHeaders();
heads.add(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=123.txt");
heads.add(HttpHeaders.CONTENT_TYPE,MediaType.APPLICATION_JSON_VALUE);
result = new ResponseEntity <byte[]>(b,heads, HttpStatus.OK);
} catch (IOException e) {
e.printStackTrace();
} finally {
if(inputStream != null){
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return result;
}
上述内容就是使用Feign怎么实现微服务间文件下载,你们学到知识或技能了吗?如果还想学到更多技能或者丰富自己的知识储备,欢迎关注天达云行业资讯频道。