Call this cat API of Metadata Co., Ltd. in Java.

1.First of all

It is necessary to register as a user of Metadata Co., Ltd. and set a user ID and password.

To register as a user, please go to here.

2. Link with API

I wasn't sure how to link the API, but I tried various things and settled on the following sources. It seems to communicate with ** POST **, and if you set the image data in the image part, JSON will be returned successfully. I made the image data to be sent in Byte, so would you like to import this into the app?

pom.xml

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.10</version>
</dependency>
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpmime</artifactId>
    <version>4.5.10</version>
</dependency>

WhatCat.java

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.HttpClientBuilder;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 *What is this cat? API.
 *
 * @author H.Aoshima
 * @version 1.0
 *
 */
public final class WhatCat {

    /**
     * URI.
     */
    private static final String SUGGETS_URL = "http://whatcat.ap.mextractr.net/api_query";

    /**
     *Run.
     * @param bytes image data
     * @param fileName Image file name
     * @param userName username
     * @param password password
     * @return Judgment result
     * @throws ClientProtocolException Client protocol exception
     * @throws IOException IO exception
     */
    public static List<Object> exec(final byte[] bytes, final String fileName, final String userName, final String password)
            throws ClientProtocolException, IOException {

        //Return value
        List result = null;

        //Client creation
        final HttpClient client = HttpClientBuilder.create().build();
        //Charset when replacing with byte array before encoding
        final Charset charset = StandardCharsets.UTF_8;
        //The string you want to encode
        final String source = userName + ":" + password;
        //Encoding process
        final String encoding = Base64.getEncoder().encodeToString(source.getBytes(charset));
        final HttpPost post = new HttpPost(WhatCat.SUGGETS_URL);
        post.setHeader("Authorization", "Basic " + encoding);

        //Set image values in MultipartEntityBuilderi
        final MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        builder.addBinaryBody("image", bytes, ContentType.MULTIPART_FORM_DATA, fileName);

        post.setEntity(builder.build());

        //Get response
        final HttpResponse response = client.execute(post);
        final HttpEntity responseEntity = response.getEntity();

        if (response.getStatusLine().getStatusCode() == 200) {
            //Get value
            final InputStream is = responseEntity.getContent();
            final Reader r = new InputStreamReader(is, charset);

            ObjectMapper mapper = new ObjectMapper();
            result = mapper.readValue(r, new TypeReference<List<Object>>() {});
        }

        return result;
    }

}