com.blobcity.db.exceptions.InternalAdapterException：此时无法与数据库通信

Question

在 Infinitum 数据库上执行基本插入操作时出现以下错误。我确定我拥有数据库运行，因为我能够连接到它并通过 CLI 对其进行操作。

错误信息是：

Exception in thread "main" com.blobcity.db.exceptions.InternalAdapterException: Unable to communicate with the database at this time
 at com.blobcity.db.QueryExecuter.executeQuery(QueryExecuter.java:71)
 at com.blobcity.db.QueryExecuter.executeBql(QueryExecuter.java:30)
 at com.blobcity.db.CloudStorage.postRequest(CloudStorage.java:728)
 at com.blobcity.db.CloudStorage.insert(CloudStorage.java:650)
 at com.blobcity.db.CloudStorage.insert(CloudStorage.java:381)
 at com.blobcity.Main.main(Main.java:23)
Caused by: java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost/rest/bquery
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
 at sun.net.www.protocol.http.HttpURLConnection.run(HttpURLConnection.java:1888)
 at sun.net.www.protocol.http.HttpURLConnection.run(HttpURLConnection.java:1883)
 at java.security.AccessController.doPrivileged(Native Method)
 at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1882)
 at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1455)
 at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1439)
 at com.blobcity.db.QueryExecuter.executeQuery(QueryExecuter.java:57)
 ... 5 more
Caused by: java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost/rest/bquery
 at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1838)
 at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1439)
 at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
 at com.blobcity.db.QueryExecuter.executeQuery(QueryExecuter.java:55)
 ... 5 more

我造成错误的主要方法是：

package com.blobcity;

import com.blobcity.db.config.Credentials;
import java.util.Random;

public class Main {
    public static void main(String[] args) {
        Credentials.init("localhost", "root", "root", "mydb");
        
        Hello hello = new Hello();
        hello.setId("1");
        hello.setRandom(new Random().nextInt());
        hello.insert();
    }
}

而我为其创建相应 table 的实体 class 是：

package com.blobcity;

import com.blobcity.db.CloudStorage;
import com.blobcity.db.annotations.Entity;
import com.blobcity.db.annotations.Primary;

@Entity
public class Hello extends CloudStorage{
    @Primary
    public String id;
    public int random;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public int getRandom() {
        return random;
    }

    public void setRandom(int random) {
        this.random = random;
    }
}

Answer 1

您在设置 Credentials 时缺少端口号。连接到 Infinitum 数据库的默认端口是 10111，除非您更改了此端口，否则以下应该可以工作

Credentials.init("localhost:10111", "root", "root", "mydb");

com.blobcity.db.exceptions.InternalAdapterException：此时无法与数据库通信

com.blobcity.db.exceptions.InternalAdapterException: Unable to communicate with the database at this time

java

database

database-connection

bigdata