java使用influxDB数据库的详细代码

• Z时代
• 2024-01-10
• 分类：综合

本文实例为大家分享了java使用influxDB数据库的具体代码，供大家参考，具体内容如下

1.pom.xml中导入jar包依赖

<!-- 引入influxdb依赖  -->
 <dependency>
  <groupId>org.influxdb</groupId>
  <artifactId>influxdb-java</artifactId>
  <version>2.5</version>
 </dependency>

2.编写influxDB工具类：

package com.hontye.parameter.util;
import org.influxdb.InfluxDB;
import org.influxdb.InfluxDBFactory;
import org.influxdb.dto.Point;
import org.influxdb.dto.Point.Builder;
import org.influxdb.dto.Query;
import org.influxdb.dto.QueryResult;
import java.util.Map;
/**
 * 时序数据库 InfluxDB 连接
 * @author Dai_LW
 *
 */
public class InfluxDbUtil {
  private static String openurl = "http://127.0.0.1:8086";//连接地址
  private static String username = "root";//用户名
  private static String password = "root";//密码
  private static String database = "PARAMTER_DB";//数据库
  private static String measurement = "tw_parameter_tb";//表名
  private InfluxDB influxDB;
  public InfluxDbUtil(String username, String password, String openurl, String database){
    this.username = username;
    this.password = password;
    this.openurl = openurl;
    this.database = database;
  }
  public static InfluxDbUtil setUp(){
    //创建 连接
    InfluxDbUtil influxDbUtil = new InfluxDbUtil(username, password, openurl, database);
    influxDbUtil.influxDbBuild();
    influxDbUtil.createRetentionPolicy();
//   influxDB.deleteDB(database);
//   influxDB.createDB(database);
    return influxDbUtil;
  }
  /**连接时序数据库；获得InfluxDB**/
  public InfluxDB influxDbBuild(){
    if(influxDB == null){
      influxDB = InfluxDBFactory.connect(openurl, username, password);
      influxDB.createDatabase(database);
    }
    return influxDB;
  }
  /**
   * 设置数据保存策略
   * defalut 策略名 /database 数据库名/ 30d 数据保存时限30天/ 1 副本个数为1/ 结尾DEFAULT 表示 设为默认的策略
   */
  public void createRetentionPolicy(){
    String command = String.format("CREATE RETENTION POLICY \"%s\" ON \"%s\" DURATION %s REPLICATION %s DEFAULT",
        "defalut", database, "30d", 1);
    this.query(command);
  }
  /**
   * 查询
   * @param command 查询语句
   * @return
   */
  public QueryResult query(String command){
    return influxDB.query(new Query(command, database));
  }
  /**
   * 插入
   * @param tags 标签
   * @param fields 字段
   */
  public void insert(Map<String, String> tags, Map<String, Object> fields){
    Builder builder = Point.measurement(measurement);
    builder.tag(tags);
    builder.fields(fields);
    influxDB.write(database, "", builder.build());
  }
  /**
   * 删除
   * @param command 删除语句
   * @return 返回错误信息
   */
  public String deleteMeasurementData(String command){
    QueryResult result = influxDB.query(new Query(command, database));
    return result.getError();
  }
  /**
   * 创建数据库
   * @param dbName
   */
  public void createDB(String dbName){
    influxDB.createDatabase(dbName);
  }
  /**
   * 删除数据库
   * @param dbName
   */
  public void deleteDB(String dbName){
    influxDB.deleteDatabase(dbName);
  }
  public String getUsername() {
    return username;
  }
  public void setUsername(String username) {
    this.username = username;
  }
  public String getPassword() {
    return password;
  }
  public void setPassword(String password) {
    this.password = password;
  }
  public String getOpenurl() {
    return openurl;
  }
  public void setOpenurl(String openurl) {
    this.openurl = openurl;
  }
  public void setDatabase(String database) {
    this.database = database;
  }
}

3.存值

public class QuatyServiceImpl{
private InfluxDbUtil influxDB;
public void intoDb() {
  influxDB = InfluxDbUtil.setUp();
  Map<String, String> tags = new HashMap<>();
  Map<String, Object> fields = new HashMap<>();
  tags.put("TAG_NAME",info.getKey());
  fields.put("TAG_VALUE",code);
  fields.put("TIMAMPEST", df.format(new Date()));
  influxDB.insert(tags, fields);
  }
}

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