Java development tips: How to call Qiniu Cloud image review interface

Java development tips: How to call Qiniu Cloud's image review interface

Abstract: This article will introduce how to use Java language to call Qiniu Cloud's image review interface to help developers quickly implement related functions. The article will introduce the steps of interface calling in detail and provide sample code for reference.

Keywords: Java, Qiniu Cloud, image review, interface call, sample code

1. Background introduction
Qiniu Cloud is a company that provides object storage and cloud storage for developers , content distribution and data processing and other services cloud platform. Among them, the image review interface can help developers review and identify image content, and is widely used in social media, e-commerce platforms and other fields.

2. Preparations for interface calling
Before starting the interface calling, we need to make the following preparations:
1. Create a Qiniu Cloud account and log in.
2. Obtain the API key for image review and find the corresponding key in the Qiniu Cloud console.

3. Steps for calling the interface
The following are the steps for calling the Qiniu Cloud image review interface:
1. Construct the request URL
According to Qiniu Cloud’s interface document, we can use the following URL to send the request:

String url = "http://ai.qiniuapi.com/v3/image/censor";

2. Construct the request header
Construct the request header containing the Authorization information. This information needs to be encoded in base64. The specific implementation code is as follows:

String accessKey = "your accessKey"; // 七牛云的Access Key
String secretKey = "your secretKey"; // 七牛云的Secret Key

String credentials = accessKey + ":" + secretKey;
String encodedCredentials = new String(Base64.encodeBase64(credentials.getBytes()));
String authorization = "Basic " + encodedCredentials;

conn.setRequestProperty("Authorization", authorization);

3. Construct the request body
Construct the request body containing the URL of the image to be reviewed. The specific implementation code is as follows:

String imageUrl = "http://www.example.com/image.jpg"; // 待审核图像的URL
String requestBody = "{ "data": { "uri": "" + imageUrl + "" } }";

OutputStream os = conn.getOutputStream();
os.write(requestBody.getBytes());
os.flush();
os.close();

4. Send a request and get the response
Send a POST request and get the response result. The specific implementation code is as follows :

int responseCode = conn.getResponseCode();

if (responseCode == HttpURLConnection.HTTP_OK) {
    BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }

    in.close();
    
    // 处理响应结果
    System.out.println(response.toString());
} else {
    System.out.println("请求失败，错误码：" + responseCode);
}

4. Sample code
The following is a complete sample code, showing how to use Java to call the Qiniu Cloud image review interface:

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import org.apache.commons.codec.binary.Base64;

public class QiniuImageCensor {
    public static void main(String[] args) throws Exception {
        String url = "http://ai.qiniuapi.com/v3/image/censor";
        String accessKey = "your accessKey";
        String secretKey = "your secretKey";
        String imageUrl = "http://www.example.com/image.jpg";

        String credentials = accessKey + ":" + secretKey;
        String encodedCredentials = new String(Base64.encodeBase64(credentials.getBytes()));
        String authorization = "Basic " + encodedCredentials;

        URL obj = new URL(url);
        HttpURLConnection conn = (HttpURLConnection) obj.openConnection();
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Authorization", authorization);
        conn.setRequestProperty("Content-Type", "application/json");

        String requestBody = "{ "data": { "uri": "" + imageUrl + "" } }";
        conn.setDoOutput(true);
        OutputStream os = conn.getOutputStream();
        os.write(requestBody.getBytes());
        os.flush();
        os.close();

        int responseCode = conn.getResponseCode();

        if (responseCode == HttpURLConnection.HTTP_OK) {
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }

            in.close();

            System.out.println(response.toString());
        } else {
            System.out.println("请求失败，错误码：" + responseCode);
        }
    }
}

5. Summary
This article Introduces how to use Java language to call Qiniu Cloud's image review interface. We help developers understand the process and implementation methods of interface calling through detailed step instructions and sample codes. I hope this article can provide some help to developers so that they can better apply Qiniu Cloud's image review interface.

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