retrofit 实现文件上传和下载

最新推荐文章于 2024-03-18 15:00:43 发布

三木神奇

最新推荐文章于 2024-03-18 15:00:43 发布

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本文链接：https://blog.youkuaiyun.com/akjbm/article/details/51434425

retrofit实现文件上传和下载

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public interface FileWebService {
 
    @Multipart
    @POST("/files")
    FileUploadedResponse upload(@Part("fileContent") TypedFile file);
 
}

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Filefile=//
 create your File object here

RestAdapterrestAdapter=//
 create your RestAdapter

StringmimeType="image/jpg";

TypedFilefileToSend=newTypedFile(mimeType,file);

FileWebServicefileWebService=restAdapter.create(FileWebService.class);

fileWebService.upload(fileToSend);

3.Downloading

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public interface FileWebService{
    @GET("/files/{fileId}")
    @Headers({"Content-Type: image/jpeg"})
    Response getFile(@Path("fileId") int fileId);
 
}

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intfileId=123;

Responseresponse=fileWebService.getFile(fileId);

byte[]bytes=FileHelper.getBytesFromStream(response.getBody().in());

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public static byte[] getBytesFromStream(InputStream is) throws IOException {
 
	int len;
	int size = 1024;
	byte[] buf;
 
	ByteArrayOutputStream bos = new ByteArrayOutputStream();
	buf = new byte[size];
	while((len = is.read(buf, 0, size)) != -1) {
		bos.write(buf, 0, len);
	}
	buf = bos.toByteArray();
 
	return buf;
}

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publicstaticvoidsaveBytesToFile(byte[]bytes,Stringpath){

try{

FileOutputStreamfileOuputStream=newFileOutputStream(path);

fileOuputStream.write(bytes);

}catch(FileNotFoundExceptione){

e.printStackTrace();

}catch(IOExceptione){

e.printStackTrace();

}finally{

                fileOuputStream.close();

        }

}