java - Java将文件上传到api端点

因此，我尝试以二进制格式将文件上传到imgur的endpoint。 api需要将文件映射到image键，但是我正在努力弄清楚如何做到这一点。

如何做到这一点？

编辑：我尝试使用this帖子的摘录，但无法使其正常工作。

最佳答案

试试上面的例子。是from visualsearchapi.com。祝好运。

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();
        }
    }
}

关于java - Java将文件上传到api端点，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39316155/