1. 程式人生 > >java-ipfs-api.jar的食用方法

java-ipfs-api.jar的食用方法

引入java-ipfs-api.jar

從倉庫引入

在pom.xml中新增倉庫

	<repositories>
		<!-- 阿里雲映象,不需要的可以忽略 -->
        <repository>
            <id>public</id>
            <name>aliyun nexus</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<releases> <enabled>true</enabled> </releases> </repository> <!-- jitpack.io倉庫 --> <repository> <id>jitpack.io</id> <url>https://jitpack.io</url> </
repository
>
</repositories>
		<dependency>
            <groupId>com.github.ipfs</groupId>
            <artifactId>java-ipfs-api</artifactId>
            <version>v1.2.2</version>
        </dependency>

原始碼打包(推薦)

git clone https://github.com/ipfs/java-ipfs-api.git
mvn clean install -Dmaven.test.skip=true

啟動IPFS

還沒寫,後補

食用方法(v1.2.2)

IPFSUtil.java

import io.ipfs.api.IPFS;
import io.ipfs.api.MerkleNode;
import io.ipfs.api.NamedStreamable;
import io.ipfs.multihash.Multihash;

import java.io.File;
import java.io.IOException;

public class IPFSUtil {
   private static IPFS ipfs = new IPFS("/ip4/127.0.0.1/tcp/5001");

   public static String add() throws IOException {
       NamedStreamable.FileWrapper file = new NamedStreamable.FileWrapper(new File("C:\\Users\\Administrator\\Desktop", "test.png"));
       MerkleNode addResult = ipfs.add(file).get(0);
       return addResult.hash.toString();
   }

   public static String cat(String hash) throws IOException {
        byte[] data = ipfs.cat(Multihash.fromBase58(hash));
        return new String(data);
   }
}

IPFSUtilTest.java

import org.junit.Test;
import java.io.IOException;

public class IPFSUtilTest {

    @Test
    public void testAdd() {
        try {
            String hash = IPFSUtil.add();
            System.out.println(hash);
            // QmfGp2pRCs3VidFKEVh6NFdrJ3usfrRDr2KXW9k4t3EfUK
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    @Test
    public void testCat() {
        try {
            String data = IPFSUtil.cat("QmfGp2pRCs3VidFKEVh6NFdrJ3usfrRDr2KXW9k4t3EfUK");
            System.out.println(data);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

只寫了兩個簡單的測試,其他api後補。add的物件是一個圖片,所以cat沒什麼卵用,上效果圖

效果圖

ipfs hash為https://ipfs.io/ipfs/QmfGp2pRCs3VidFKEVh6NFdrJ3usfrRDr2KXW9k4t3EfUK