Java將文件上傳到api端點

Question

所以我試圖以二進制格式上傳文件到imgur的endpoint。該API需要將文件映射到image密鑰，但我正努力想辦法解決這個問題。

這是如何實現的？

編輯：我嘗試使用提取this後，但不能得到它的工作。

Answer 1

試試上面的例子。這是​​。祝你好運。

public static String simSearchByImg(File file,int catid ,String subject,String labeland,String labelor,String labelnot) throws IOException{ 
     CloseableHttpClient httpClient = HttpClients.createDefault(); 
     CloseableHttpResponse response = null; 
     String result =null; 
     try { 
      HttpPost httppost = new HttpPost("http://api0.visualsearchapi.com:8084/vsearchtech/api/v1.0/apisim_search"); 

      FileBody bin = new FileBody(file); 
      StringBody catidBody = new StringBody(catid+"" , ContentType.TEXT_PLAIN); 
      StringBody keyBody = new StringBody(APPKEY , ContentType.TEXT_PLAIN); 
      StringBody langBody = new StringBody(LANG , ContentType.TEXT_PLAIN); 
      StringBody fmtBody = new StringBody(FMT , ContentType.TEXT_PLAIN); 
      MultipartEntityBuilder builder = MultipartEntityBuilder.create(); 
      builder.addPart("apikey", keyBody) 
      .addPart("photo", bin) 
      .addPart("catid", catidBody) 
      .addPart("lang", langBody) 
      .addPart("fmt", fmtBody); 
      if(subject != null && subject.isEmpty() == false){ 
       StringBody subjectBody = new StringBody(subject, Charset.forName("UTF-8")); 
       builder.addPart("subject", subjectBody); 
      } 
      if(labeland != null && labeland.isEmpty() == false){ 
       StringBody labelandBody = new StringBody(labeland , ContentType.TEXT_PLAIN); 
       builder .addPart("labeland", labelandBody); 
      } 
      if(labelor != null && labelor.isEmpty() == false){ 
       StringBody labelorBody = new StringBody(labelor , ContentType.TEXT_PLAIN); 
       builder .addPart("labelor", labelorBody); 
      } 
      if(labelnot != null && labelnot.isEmpty() == false){ 
       StringBody labelnotBody = new StringBody(labelnot , ContentType.TEXT_PLAIN); 
       builder .addPart("labelnot", labelnotBody); 
      } 
      HttpEntity reqEntity = builder.build(); 
      httppost.setEntity(reqEntity); 
      response = httpClient.execute(httppost); 
      HttpEntity resEntity = response.getEntity(); 
      if (resEntity != null) { 
       // result = ConvertStreamToString(resEntity.getContent(), "UTF-8"); 
       String charset = "UTF-8"; 
       String content=EntityUtils.toString(response.getEntity(), charset); 
       System.out.println(content); 
      } 
      EntityUtils.consume(resEntity); 
     }catch(Exception e){ 
      e.printStackTrace(); 
     }finally { 
      response.close(); 
      httpClient.close(); 
     } 
     return result; 
    } 

    public static void main(String[] args) { 
     try { 
      simSearchByImg(new File("/path/dog1.jpg"),0,null,null,null,null); 
      /*Above Java request upload an image /path/dog1.jpg, search for 
      visually similar images,by using your apikey, values of other parameters 
      are as default*/ 
      simSearchByImg(new File("/path/dog1.jpg"),45,"pet","345,356",null,"98") 
      /*Above Java request upload an image dog1.jpg, search for visually similar 
      images, by using your apikey, search for similar images with keyword 「pet」, 
      image category as 45, and result images have labels 345 and 356, 
      but without label 98. Values of other parameters are as default*/ 
     } catch (Exception e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    } 
}