WP- REST-API with Java

API endpoint

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
 
 
public class Main {
    public static void main(String[] args) {
        try {
            URL url = new URL("http://wp-api.pw/wp-json/");
 
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
 
            System.out.printf("Response: %d %sn", conn.getResponseCode(), conn.getResponseMessage());
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String input;
 
            while ((input = br.readLine()) != null) {
                System.out.println(input);
            }
            br.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Posts

Get

The Posts endpoint returns a Post Collection containing a subset of the site’s posts.

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
 
 
public class Main {
    public static void main(String[] args) {
        try {
            URL url = new URL("http://wp-api.pw/wp-json/posts");
 
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
 
            System.out.printf("Response: %d %sn", conn.getResponseCode(), conn.getResponseMessage());
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String input;
 
            while ((input = br.readLine()) != null) {
                System.out.println(input);
            }
            br.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Post

Create a Post Requires authentication

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
 
 
public class Main {
    public static void main(String[] args) {
        try {
            String content = '{"title": "This is a post","content_raw": "This is some content"}';
            URL url = new URL("http://wp-api.pw/wp-json/posts");
 
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.setRequestProperty("Authorization", "Basic " + Base64.getEncoder().encodeToString("test:password".getBytes(StandardCharsets.UTF_8)));
            conn.setRequestProperty("Content-Length", String.valueOf(content.getBytes("UTF-8").length));
            conn.setDoOutput(true);
            DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
            wr.writeBytes(content);
            wr.flush();
            wr.close();
 
            System.out.printf("Response: %d %sn", conn.getResponseCode(), conn.getResponseMessage());
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String input;
 
            while ((input = br.readLine()) != null) {
                System.out.println(input);
            }
            br.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Delete

Delete a Post Requires authentication

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
 
 
public class Main {
    public static void main(String[] args) {
        try {
            URL url = new URL("http://wp-api.pw/wp-json/posts/229");
 
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            conn.setRequestMethod("DELETE");
            conn.setRequestProperty("Authorization", "Basic " + Base64.getEncoder().encodeToString("test:password".getBytes(StandardCharsets.UTF_8)));
 
            System.out.printf("Response: %d %sn", conn.getResponseCode(), conn.getResponseMessage());
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String input;
 
            while ((input = br.readLine()) != null) {
                System.out.println(input);
            }
            br.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Media

Post

To create the raw data for an attachment. This is a binary object (blob), such as image data or a video.

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StringWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
 
 
public class Main {
    public static void main(String[] args) {
        try {
            char[] buffer = new char[1024];
            StringWriter writer = new StringWriter();
            FileReader fileReader = new FileReader("/home/chen/IMG_1551.jpg");
            for (int n = 0; -1 != (n = fileReader.read(buffer));) {
                writer.write(buffer, 0, n);
            }
            fileReader.close();
            String content = writer.toString();
            URL url = new URL("http://wp-api.pw/wp-json/media");
 
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "image/jpeg");
            conn.setRequestProperty("Authorization", "Basic " + Base64.getEncoder().encodeToString("test:password".getBytes(StandardCharsets.UTF_8)));
            conn.setRequestProperty("Content-Length", String.valueOf(content.getBytes("UTF-8").length));
            conn.setDoOutput(true);
            DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
            wr.writeBytes(content);
            wr.flush();
            wr.close();
 
            System.out.printf("Response: %d %sn", conn.getResponseCode(), conn.getResponseMessage());
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String input;
 
            while ((input = br.readLine()) != null) {
                System.out.println(input);
            }
            br.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Users

Get

This endpoint offers a permalink to get the current user, without needing to know the user’s ID.

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
 
 
public class Main {
    public static void main(String[] args) {
        try {
            URL url = new URL("http://wp-api.pw/wp-json/users/me");
 
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            conn.setRequestProperty("Authorization", "Basic " + Base64.getEncoder().encodeToString("test:password".getBytes(StandardCharsets.UTF_8)));
 
            System.out.printf("Response: %d %sn", conn.getResponseCode(), conn.getResponseMessage());
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String input;
 
            while ((input = br.readLine()) != null) {
                System.out.println(input);
            }
            br.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}