• bytearray和file的后端上传方式


    public static  String readAndUpload(String serverpath,String imgid) {
            if(serverpath==null){
                serverpath = OLD_IMG_SERVER_URL;
            }
            CloseableHttpClient httpclient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
                         try {
                             // 创建httpget
                             URL url = new URL(serverpath+imgid);
                             URI uri = new URI(url.getProtocol(), url.getHost(), url.getPath(), url.getQuery(), null);
                             HttpGet httpget = new HttpGet(uri);
                             System.out.println("executing request " + httpget.getURI());
                             // 执行get请求.  
                             response = httpclient.execute(httpget);
                             // 获取响应实体  
                             HttpEntity entity = response.getEntity();
                             System.out.println("--------------------------------------");
                             // 打印响应状态  
                             System.out.println(response.getStatusLine());
                             if (entity != null) {
                                 long len = entity.getContentLength();
                                 // 打印响应内容长度  
                                 System.out.println("image content length: " + len);
                                 System.out.println("------------------------------------");
                                 //准备上传图片数据
                                 byte[] buffer = null;  InputStream fis=null;
                                 if(len>=1000000){
                                     System.err.println(imgid+"====Scale:"+1000000.0f/len);
                                     Thumbnails.of(new URL(serverpath+imgid)).outputFormat("jpeg").scale(1)   
    //                                 .scale(1000000.0f/len)  
                                     .toFile("temp.jpg");  
                                     fis = new FileInputStream("temp.jpg");
                                 }else{
                                     fis = entity.getContent();  
                                 }
                                         ByteArrayOutputStream bos = new ByteArrayOutputStream(1024);  
                                         byte[] b = new byte[1024];  
                                         int n;  
                                         while ((n = fis.read(b)) != -1) {  
                                             bos.write(b, 0, n);  
                                         }  
                                         fis.close();  
                                         bos.close();  
                                         buffer = bos.toByteArray();  
                                     EntityUtils.consume(entity);
                                     
                                     //开始上传
                                     HttpPost httppost = new HttpPost(NEW_IMG_SERVER_URL);
                                     
                                     ByteArrayEntity byteArrayEntity = new ByteArrayEntity(buffer);
                                     httppost.setEntity(byteArrayEntity);
                                     httppost.addHeader("Content-Type", "jpeg");
                                     
                                     System.out.println("executing request " + httppost.getRequestLine());
                                     Header[] headers =  httppost.getAllHeaders();
                                     response = httpclient.execute(httppost);
                                     
                                     System.out.println("----------------Response-----------------------");
                                     System.out.println(response.getStatusLine());
                                     HttpEntity resEntity = response.getEntity();
                                     if (resEntity != null) {
                                         String resp = EntityUtils.toString(resEntity);
                                         System.out.println("Response content length: " + resEntity.getContentLength());
                                         System.out.println("Response content : " + resp);
                                         ImgInfo o = JsonUtil.fromJsonToObject(resp, ImgInfo.class);
                                         if(o==null || o.getInfo()==null){
                                             return null;
                                         }
                                         return  o.getInfo().getMd5();
                                     }
                                     
                                     EntityUtils.consume(resEntity);
                             }else{
                                 return null;
                             }
                             
                         } catch (ClientProtocolException e) {
                            e.printStackTrace();
                            return null;
                        } catch (IOException e) {
                            e.printStackTrace();
                            return null;
                        } catch (URISyntaxException e) {
                            e.printStackTrace();
                            return null;
                        } finally {
                             try {
                                 if(response!=null){
                                     response.close();
                                     response = null;
                                 }
                                httpclient.close();
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                         }
                        return null;
    
        }
        
        public static  String readFileAndUpload(File file) {
            
            CloseableHttpClient httpclient = HttpClients.createDefault();
            CloseableHttpResponse response = null;
            try {
                    //准备上传图片数据
                    byte[] buffer = null;  InputStream fis = new FileInputStream(file);
                    ByteArrayOutputStream bos = new ByteArrayOutputStream(1024);  
                    byte[] b = new byte[1024];  
                    int n;  
                    while ((n = fis.read(b)) != -1) {  
                        bos.write(b, 0, n);  
                    }  
                    fis.close();  
                    bos.close();  
                    buffer = bos.toByteArray();  
                    
                    //开始上传
                    HttpPost httppost = new HttpPost(NEW_IMG_SERVER_URL);
                    
                    ByteArrayEntity byteArrayEntity = new ByteArrayEntity(buffer);
                    httppost.setEntity(byteArrayEntity);
                    httppost.addHeader("Content-Type", "jpeg");
                    
                    System.out.println("executing request " + httppost.getRequestLine());
                    Header[] headers =  httppost.getAllHeaders();
                    response = httpclient.execute(httppost);
                    
                    System.out.println("----------------Response-----------------------");
                    System.out.println(response.getStatusLine());
                    HttpEntity resEntity = response.getEntity();
                    if (resEntity != null) {
                        String resp = EntityUtils.toString(resEntity);
                        System.out.println("Response content length: " + resEntity.getContentLength());
                        System.out.println("Response content : " + resp);
                        ImgInfo o = JsonUtil.fromJsonToObject(resp, ImgInfo.class);
                        if(o==null || o.getInfo()==null){
                            return null;
                        }
                        return  o.getInfo().getMd5();
                    }
                    
                    EntityUtils.consume(resEntity);
                
            } catch (ClientProtocolException e) {
                e.printStackTrace();
                return null;
            } catch (IOException e) {
                e.printStackTrace();
                return null;
            } finally {
                try {
                    if(response!=null){
                        response.close();
                        response = null;
                    }
                    httpclient.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return null;
            
        }
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  • 原文地址:https://www.cnblogs.com/mignet/p/5391142.html
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