[[oktatas:programozás:java:java_rest_api_kliens|< Java REST API kliens]]

====== Java REST API kliens - Unirest ======

  * **Szerző:** Sallai András
  * Copyright (c) 2024, Sallai András
  * Szerkesztve: 2024
  * Licenc: [[https://creativecommons.org/licenses/by-sa/4.0/|CC BY-SA 4.0]]
  * Web: https://szit.hu

===== Az Unirest-ről =====

Az Unirest számára minimum 11 Java szükséges. A háttérben az Apache HttpClient megvalósítást használja.

Az Unirest elérhetősége:

  * https://github.com/Kong/unirest-java (2024)
  * https://kong.github.io/unirest-java/ (2024)

==== JAR függőségek ====

Ha jar fájlokat használunk a következőkre van szükség:

  * commons-logging
  * httpasyncclient
  * httpclient
  * httpcore
  * httpcore-nio
  * unirest-java



===== Maven =====

<code xml pom.xml>
    <dependencyManagement>
  <dependencies>
      <!-- https://mvnrepository.com/artifact/com.konghq/unirest-java-bom --> 
      <dependency>
          <groupId>com.konghq</groupId>
          <artifactId>unirest-java-bom</artifactId>
          <version>4.4.0</version>
          <type>pom</type>
          <scope>import</scope>
      </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
    <!-- https://mvnrepository.com/artifact/com.konghq/unirest-java-core -->
    <dependency>
        <groupId>com.konghq</groupId>
        <artifactId>unirest-java-core</artifactId>
    </dependency>
    
    <!-- pick a JSON module if you want to parse JSON include one of these: -->
    <!-- Google GSON -->
    <dependency>
        <groupId>com.konghq</groupId>
        <artifactId>unirest-modules-gson</artifactId>
    </dependency>

    <!-- OR maybe you like Jackson better? -->
    <dependency>
        <groupId>com.konghq</groupId>
        <artifactId>unirest-modules-jackson</artifactId>
    </dependency>
</dependencies>
</code>

===== CRUD műveletek szinkron módban =====

<code java UseUnirest.java>
import kong.unirest.Unirest;

public class UseUnirest {
  public static void get() {
    String url = "https://jsonplaceholder.typicode.com/users";
    String res = Unirest.get(url).asString().getBody();
    System.out.println(res);    
  }

  public static void post() {
    String url = "https://jsonplaceholder.typicode.com/users";
    String body = "{ \"name\": \"John\", \"age\": 30 }";
    String res = Unirest.post(url)
      .header("Content-Type", "application/json")
      .body(body)
      .asString()
      .getBody();
    System.out.println(res);
  }

  public static void put() {
    String url = "https://jsonplaceholder.typicode.com/users/1";
    String body = "{ \"name\": \"John\", \"age\": 30 }";
    String res = Unirest.put(url)
    .header("Content-Type", "application/json")
    .body(body).asString().getBody();
    System.out.println(res);
  }

  public static void delete() {
    String url = "https://jsonplaceholder.typicode.com/users/1";
    String res = Unirest.delete(url).asString().getBody();
    System.out.println(res);
  }
}
</code>