1.创建上传接口
1 2 3 4 5 6 7 | public interface FileWebService { @ Multipart @ POST ( "/files" ) FileUploadedResponse upload ( @ Part ( "fileContent" ) TypedFile file ) ; } |
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2.调用上传
1 2 3 4 5 6 | File file = // create your File object here RestAdapter restAdapter = // create your RestAdapter String mimeType = "image/jpg" ; TypedFile fileToSend = new TypedFile ( mimeType , file ) ; FileWebService fileWebService = restAdapter . create ( FileWebService . class ) ; fileWebService . upload ( fileToSend ) ; |
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3.创建下载接口
1 2 3 4 5 6 | public interface FileWebService { @ GET ( "/files/{fileId}" ) @ Headers ( { "Content-Type: image/jpeg" } ) Response getFile ( @ Path ( "fileId" ) int fileId ) ; } |
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4.调用
1 2 3 | int fileId = 123 ; Response response = fileWebService . getFile ( fileId ) ; byte [ ] bytes = FileHelper . getBytesFromStream ( response . getBody ( ) . in ( ) ) ; |
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FileHelper.getBytesFromStream 代码如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | 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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保存到指定路径文件：
代码语言：javascript复制public static void saveBytesToFile(byte[] bytes,String path){
try{
FileOutputStreamfileOuputStream=newFileOutputStream(path);
f ileOuputStream.write(bytes);
}catch(FileNotFoundExceptione){
e.printStackTrace();
}catch(IOExceptione){
e.printStackTrace();
}finally{
fileOuputStream.close();
}
}本文出自 Lac，转载时请注明出处及相应链接。 本文永久链接: http://www.xueyong.net.cn/archives/39
