SpringBoot redisGEO実用アプリケーション

その他 2020-10-19 18:29:28 訪問数: null

前回の記事（Redis地理アルゴリズムGEOの分析とアプリケーション）では、redis GEOアルゴリズムと関連するシェルコマンドの使用について分析しました。この記事では、実際のアプリケーションについて説明します。

頼る

注：Jedisはインポートできません。これは、分析のためにソースコードを表示するためのものです。

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-redis -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
            <version>2.3.0.RELEASE</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
        <!--     方便查看源码   -->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>3.3.0</version>
        </dependency>

データソースの構成

spring:
  redis:
    host: localhost
    port: 6379
    database: 4

例を書く

package com.gmall.user.server;

import com.gamll.user.base.BaseJunitTest;
import com.gmall.user.server.biz.UserBiz;
import lombok.extern.slf4j.Slf4j;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.geo.*;
import org.springframework.data.redis.connection.RedisGeoCommands;
import org.springframework.data.redis.core.RedisTemplate;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author HL.Wu
 * @date 2020/5/28 17:54
 * Copyright ©https://blog.csdn.net/qq_31150503 Copyright@2009-2020 AII Right Reserve
 */
@Slf4j
public class UserBizTest extends BaseJunitTest {
    @Autowired
    private UserBiz userBiz;

    @Autowired
    private RedisTemplate<String,String> redisTemplate;

    @Test
    public void getCircleUser() {

        // 初始化数据
        Map<Double, Double> locMap = new HashMap<>(); // <纬度（x）,经度(y)>
        locMap.put(121.576334, 31.168569);
        locMap.put(121.587664, 31.205503);
        locMap.put(121.60586, 31.221726);
        locMap.put(121.65238, 31.199703);
        locMap.put(121.544749, 31.204989);
        locMap.put(121.506297, 31.03268);

        Map<Double, String> cityMap = new HashMap<>();
        cityMap.put(121.576334, "上海希奥信息科技有限公司");
        cityMap.put(121.587664, "上海火车站");
        cityMap.put(121.60586, "上海人民广场");
        cityMap.put(121.65238, "上海中医药大学");
        cityMap.put(121.544749, "上海漕河泾经开区新创业园");
        cityMap.put(121.506297, "上海竹林工业园");
        System.out.println("--------------------------------- start to redis sync save Coordinate ---------------------------------");
        // 定义坐标信息
        for (Map.Entry<Double, Double> entry : locMap.entrySet()) {
            Point point = new Point(entry.getKey(), entry.getValue());
            redisTemplate.opsForGeo().add("user-local", point, cityMap.get(entry.getKey()));
        }

        // 设置检索范围
        Point point = new Point(121.587623,31.201719);
        Circle circle = new Circle(point, new Distance(5, Metrics.KILOMETERS));
        // 定义返回结果参数，如果不指定默认只返回content即保存的member信息
        RedisGeoCommands.GeoRadiusCommandArgs args = RedisGeoCommands.GeoRadiusCommandArgs.newGeoRadiusArgs().includeDistance().includeCoordinates().sortAscending().limit(5);
        GeoResults<RedisGeoCommands.GeoLocation<String>> results = redisTemplate.opsForGeo().radius("user-local", circle,args);
        List<GeoResult<RedisGeoCommands.GeoLocation<String>>> list = results.getContent();
        for (GeoResult<RedisGeoCommands.GeoLocation<String>> l1 : list) {
            System.out.println("name : " + l1.getContent().getName() +"  distance : " + l1.getDistance() +" point :" + l1.getContent().getPoint());
            //
        }

        System.out.println("--------------------------------- end to sync save Coordinate ---------------------------------");
    }

}

ソースコード分析

1.座標を追加します

注：同時に追加されるシングルポイントとマルチポイントのコレクションマップをサポートします

  • ポイント：要素属性x（経度）、y（緯度）
/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.core.GeoOperations#add(java.lang.Object, org.springframework.data.geo.Point, java.lang.Object)
	 */
	@Override
	public Long add(K key, Point point, M member) {

		byte[] rawKey = rawKey(key);
		byte[] rawMember = rawValue(member);

		return execute(connection -> connection.geoAdd(rawKey, point, rawMember), true);
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.core.GeoOperations#add(java.lang.Object, org.springframework.data.redis.connection.RedisGeoCommands.GeoLocation)
	 */
	@Override
	public Long add(K key, GeoLocation<M> location) {
		return add(key, location.getPoint(), location.getName());
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.core.GeoOperations#add(java.lang.Object, java.util.Map)
	 */
	@Override
	public Long add(K key, Map<M, Point> memberCoordinateMap) {

		byte[] rawKey = rawKey(key);
		Map<byte[], Point> rawMemberCoordinateMap = new HashMap<>();

		for (M member : memberCoordinateMap.keySet()) {
			byte[] rawMember = rawValue(member);
			rawMemberCoordinateMap.put(rawMember, memberCoordinateMap.get(member));
		}

		return execute(connection -> connection.geoAdd(rawKey, rawMemberCoordinateMap), true);
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.core.GeoOperations#add(java.lang.Object, java.lang.Iterable)
	 */
	@Override
	public Long add(K key, Iterable<GeoLocation<M>> locations) {

		Map<M, Point> memberCoordinateMap = new LinkedHashMap<>();
		for (GeoLocation<M> location : locations) {
			memberCoordinateMap.put(location.getName(), location.getPoint());
		}

		return add(key, memberCoordinateMap);
	}

2.座標を削除します

注：要素名に従って削除し、複数の同時削除をサポートします

	/**
	 * Remove the {@literal member}s.
	 *
	 * @param key must not be {@literal null}.
	 * @param members must not be {@literal null}.
	 * @return Number of elements removed. {@literal null} when used in pipeline / transaction.
	 * @since 2.0
	 */
	@Nullable
	Long remove(K key, M... members);

3.周囲の半径を照会します

注：周囲を取得するための複数の条件をサポートします

サークルオブジェクトのプロパティ：

  • ポイント：取得する中心点の座標。
  • 距離：値は検索範囲の範囲です。メトリック列挙タイプは検索範囲の単位です。
KILOMETERS(6378.137, "km"), MILES(3963.191, "mi"), NEUTRAL(1, "");

GeoRadiusCommandArgsオブジェクトメソッド：

注：この関数は、戻りデータの結果パラメーターを指定します

  • includeCoordinates：返される結果には座標情報が含まれます

  • includeDistance：返される結果には、中心座標を含む距離情報が含まれます

  • sortAscending：距離の昇順で並べ替えます

  • sortDescending：降順で距離でソートします

  • 制限：返される結果の数の制限

/**
		 * Create new {@link GeoRadiusCommandArgs}.
		 *
		 * @return never {@literal null}.
		 */
		public static GeoRadiusCommandArgs newGeoRadiusArgs() {
			return new GeoRadiusCommandArgs();
		}

		/**
		 * Sets the {@link Flag#WITHCOORD} flag to also return the longitude, latitude coordinates of the matching items.
		 *
		 * @return
		 */
		public GeoRadiusCommandArgs includeCoordinates() {

			flags.add(Flag.WITHCOORD);
			return this;
		}

		/**
		 * Sets the {@link Flag#WITHDIST} flag to also return the distance of the returned items from the specified center.
		 *
		 * @return never {@literal null}.
		 */
		public GeoRadiusCommandArgs includeDistance() {

			flags.add(Flag.WITHDIST);
			return this;
		}

		/**
		 * Sort returned items from the nearest to the furthest, relative to the center.
		 *
		 * @return never {@literal null}.
		 */
		public GeoRadiusCommandArgs sortAscending() {

			sortDirection = Direction.ASC;
			return this;
		}

		/**
		 * Sort returned items from the furthest to the nearest, relative to the center.
		 *
		 * @return never {@literal null}.
		 */
		public GeoRadiusCommandArgs sortDescending() {

			sortDirection = Direction.DESC;
			return this;
		}

		/**
		 * Limit the results to the first N matching items.
		 *
		 * @param count
		 * @return never {@literal null}.
		 */
		public GeoRadiusCommandArgs limit(long count) {

			Assert.isTrue(count > 0, "Count has to positive value.");
			limit = count;
			return this;
		}

半径ソースコード分析：

/**
	 * Get the {@literal member}s within the boundaries of a given {@link Circle}.
	 *
	 * @param key must not be {@literal null}.
	 * @param within must not be {@literal null}.
	 * @return never {@literal null} unless used in pipeline / transaction.
	 * @since 2.0
	 * @see <a href="https://redis.io/commands/georadius">Redis Documentation: GEORADIUS</a>
	 */
	@Nullable
	GeoResults<GeoLocation<M>> radius(K key, Circle within);


	/**
	 * Get the {@literal member}s within the boundaries of a given {@link Circle} applying {@link GeoRadiusCommandArgs}.
	 *
	 * @param key must not be {@literal null}.
	 * @param within must not be {@literal null}.
	 * @param args must not be {@literal null}.
	 * @return never {@literal null} unless used in pipeline / transaction.
	 * @since 2.0
	 * @see <a href="https://redis.io/commands/georadius">Redis Documentation: GEORADIUS</a>
	 */
	@Nullable
	GeoResults<GeoLocation<M>> radius(K key, Circle within, GeoRadiusCommandArgs args);

	
	/**
	 * Get the {@literal member}s within the circle defined by the {@literal members} coordinates and given
	 * {@literal radius}.
	 *
	 * @param key must not be {@literal null}.
	 * @param member must not be {@literal null}.
	 * @param radius
	 * @return never {@literal null} unless used in pipeline / transaction.
	 * @since 2.0
	 * @see <a href="https://redis.io/commands/georadiusbymember">Redis Documentation: GEORADIUSBYMEMBER</a>
	 */
	@Nullable
	GeoResults<GeoLocation<M>> radius(K key, M member, double radius);


	/**
	 * Get the {@literal member}s within the circle defined by the {@literal members} coordinates and given
	 * {@literal radius} applying {@link Metric}.
	 *
	 * @param key must not be {@literal null}.
	 * @param member must not be {@literal null}.
	 * @param distance must not be {@literal null}.
	 * @return never {@literal null} unless used in pipeline / transaction.
	 * @since 2.0
	 * @see <a href="https://redis.io/commands/georadiusbymember">Redis Documentation: GEORADIUSBYMEMBER</a>
	 */
	@Nullable
	GeoResults<GeoLocation<M>> radius(K key, M member, Distance distance);


	/**
	 * Get the {@literal member}s within the circle defined by the {@literal members} coordinates and given
	 * {@literal radius} applying {@link Metric} and {@link GeoRadiusCommandArgs}.
	 *
	 * @param key must not be {@literal null}.
	 * @param member must not be {@literal null}.
	 * @param distance must not be {@literal null}.
	 * @param args must not be {@literal null}.
	 * @return never {@literal null} unless used in pipeline / transaction.
	 * @since 2.0
	 * @see <a href="https://redis.io/commands/georadiusbymember">Redis Documentation: GEORADIUSBYMEMBER</a>
	 */
	@Nullable
	GeoResults<GeoLocation<M>> radius(K key, M member, Distance distance, GeoRadiusCommandArgs args);

異常な現象

原因：io.lettuce.core.RedisCommandExecutionException：ERR不明なコマンド 'GEOADD'


org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: ERR unknown command 'GEOADD'

	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:54)
	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:52)
	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41)
	at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44)
	at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42)
	at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:273)
	at org.springframework.data.redis.connection.lettuce.LettuceGeoCommands.convertLettuceAccessException(LettuceGeoCommands.java:424)
	at org.springframework.data.redis.connection.lettuce.LettuceGeoCommands.geoAdd(LettuceGeoCommands.java:78)
	at org.springframework.data.redis.connection.DefaultedRedisConnection.geoAdd(DefaultedRedisConnection.java:1187)
	at org.springframework.data.redis.connection.DefaultStringRedisConnection.geoAdd(DefaultStringRedisConnection.java:2908)
	at org.springframework.data.redis.core.DefaultGeoOperations.lambda$add$0(DefaultGeoOperations.java:60)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:228)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:188)
	at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:96)
	at org.springframework.data.redis.core.DefaultGeoOperations.add(DefaultGeoOperations.java:60)
	at com.gmall.user.server.UserBizTest.getCircleUser(UserBizTest.java:52)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
	at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Caused by: io.lettuce.core.RedisCommandExecutionException: ERR unknown command 'GEOADD'
	at io.lettuce.core.ExceptionFactory.createExecutionException(ExceptionFactory.java:135)
	at io.lettuce.core.ExceptionFactory.createExecutionException(ExceptionFactory.java:108)
	at io.lettuce.core.protocol.AsyncCommand.completeResult(AsyncCommand.java:120)
	at io.lettuce.core.protocol.AsyncCommand.complete(AsyncCommand.java:111)
	at io.lettuce.core.protocol.CommandHandler.complete(CommandHandler.java:654)
	at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:614)
	at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:565)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Thread.java:748)

解決：

redisGEOはバージョン> = 3.2以降でサポートされるため、redisバージョンを変更します

やっと

ソースアドレス：https：//gitee.com/mackjie/gmall-service 

プロジェクト内のGmall-batch-> test-> com.gmall.user.server.UserBizTest＃getCircleUser（）

今日、このスキルを学びましたか？^ _ ^

 

 

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