Spring集成Redis详解代码示例

程序员文章站 2023-12-19 08:31:40

本文章从头开始介绍spring集成redis的示例。 eclipse工程结构如下图为我的示例工程的结构图，采用maven构建。其中需要集成spring，因此需要bea...

本文章从头开始介绍spring集成redis的示例。

eclipse工程结构

如下图为我的示例工程的结构图，采用maven构建。其中需要集成spring，因此需要beans.xml文件配置spring的依赖注入，redis.properties配置连接服务器的配置信息。

Spring集成Redis详解代码示例

其中工程中beans.xml和redis.properties文件直接放在了根目录，有需要的读者可以放到resource目录中。

pom依赖

如下为示例pom依赖，spring集成redis需要依赖的包为：jedis包，spring-context模块及依赖的包，spring-data-redis模块包，spring-test包用于junit测试，pom.xml文件内容如下：

<project xmlns="https://maven.apache.org/pom/4.0.0" xmlns:xsi="https://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="https://maven.apache.org/pom/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelversion>4.0.0</modelversion>
 
  <groupid>com.test</groupid>
  javatest</artifactid>
  <version>0.0.1-snapshot</version>
  <packaging>jar</packaging>
 
  <name>javatest</name>
  <url>https://maven.apache.org</url>
 
  <properties>
    <project.build.sourceencoding>utf-8</project.build.sourceencoding>
  </properties>
 
  <dependencies>
    <dependency>
      <groupid>junit</groupid>
      junit</artifactid>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupid>redis.clients</groupid>
      jedis</artifactid>
      <version>2.5.1</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      spring-context</artifactid>
      <version>4.2.6.release</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      spring-test</artifactid>
      <version>4.2.6.release</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupid>org.springframework.data</groupid>
      spring-data-redis</artifactid>
      <version>1.7.2.release</version>
    </dependency>
  </dependencies>
</project>

spring配置

spring配置文件beans.xml的配置如下：

<!--?xml version="1.0" encoding="utf-8"?--> 
<beans xmlns="https://www.springframework.org/schema/beans" xmlns:aop="https://www.springframework.org/schema/aop" xmlns:context="https://www.springframework.org/schema/context" xmlns:jee="https://www.springframework.org/schema/jee" xmlns:p="https://www.springframework.org/schema/p" xmlns:tx="https://www.springframework.org/schema/tx" xmlns:xsi="https://www.w3.org/2001/xmlschema-instance" xsi:schemalocation=" 
      https://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd 
      https://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> 
  <!-- 加载classpath下的redis配置文件 -->
  <context:property-placeholder location="classpath:redis.properties">
 
  <bean class="redis.clients.jedis.jedispoolconfig" id="poolconfig"> 
    <property name="maxidle" value="${redis.maxidle}">
    <property name="testonborrow" value="${redis.testonborrow}">
  </property></property></bean> 
 
  <bean class="org.springframework.data.redis.connection.jedis.jedisconnectionfactory" id="connectionfactory" p:host-name="${redis.host}" p:password="${redis.pass}" p:pool-config-ref="poolconfig" p:port="${redis.port}"> 
 
  <!-- spring提供的模板类 -->
  <bean class="org.springframework.data.redis.core.stringredistemplate" id="redistemplate"> 
    <property name="connectionfactory" ref="connectionfactory">
  </property></bean>
 
  <bean class="com.redis.test.userdao" id="userdao">
    <property name="redistemplate" ref="redistemplate"> 
  </property></bean>
 
</bean></context:property-placeholder></beans>

在beans.xml配置文件中，需要先加载redis.properties文件。

redis配置信息

redis的配置信息在redis.properties文件中配置：

# redis地址和端口和连接密码
redis.host=localhost
redis.port=6379
redis.pass=
 
redis.maxidle=300
redis.testonborrow=true

此示例，连接redis服务器时没有设置连接密码，因此不用填值。

java代码

user.java

package com.redis.test;
import java.io.serializable;
public class user implements serializable {
	private static final long serialversionuid = 3409768855488864675l;
	private string id;
	private string name;
	private string password;
	public user() {
	}
	public user(string id, string name, string password) {
		this.id = id;
		this.name = name;
		this.password = password;
	}
	public string getid() {
		return id;
	}
	public void setid(string id) {
		this.id = id;
	}
	public string getname() {
		return name;
	}
	public void setname(string name) {
		this.name = name;
	}
	public string getpassword() {
		return password;
	}
	public void setpassword(string password) {
		this.password = password;
	}
	public string tostring() {
		return "user [id=" + id + ", name=" + name + ", password=" + password + "]";
	}
}

abstractredisbasedao.java

package com.redis.test;
import org.springframework.data.redis.core.redistemplate;
import org.springframework.data.redis.serializer.redisserializer;
public abstract class abstractredisbasedao<k, v=""> {
  protected redistemplate<k, v=""> redistemplate;
public redistemplate<k, v=""> getredistemplate() {
	return redistemplate;
}
public void setredistemplate(redistemplate<k, v=""> redistemplate) {
	this.redistemplate = redistemplate;
}
/**
   * 获取 redisserializer
   */
protected redisserializer<string> getredisserializer() {
	return redistemplate.getstringserializer();
}
}

iuserdao.java

package com.redis.test;
import java.util.list;
public interface iuserdao {
	/** 新增 */
	boolean add(user user);
	/** 批量新增，pipeline方式 */
	boolean add(list<user> list);
	/** 删除 */
	void delete(string key);
	/** 批量删除 */
	void delete(list<string> keys);
	/** 更新 */
	boolean update(user user);
	/** 读取 */
	user get(string keyid);
}

userdao.java

package com.redis.test;
import java.util.list;
import org.springframework.dao.dataaccessexception;
import org.springframework.data.redis.connection.redisconnection;
import org.springframework.data.redis.core.rediscallback;
import org.springframework.data.redis.serializer.redisserializer;
import org.springframework.util.assert;
public class userdao extends abstractredisbasedao<string, user=""> implements iuserdao {
  public boolean add(final user user) {
	boolean result = redistemplate.execute(new rediscallback<boolean>() {
		public boolean doinredis(redisconnection connection) throws dataaccessexception {
			redisserializer<string> serializer = getredisserializer();
			byte[] key = serializer.serialize(user.getid());
			// 将id序列化成key
			byte[] value = serializer.serialize(user.getname());
			return connection.setnx(key, value);
		}
	}
	);
	return result;
}
public boolean add(final list<user> list) {
	assert.notempty(list);
	boolean result = redistemplate.execute(new rediscallback<boolean>() {
		public boolean doinredis(redisconnection connection) throws dataaccessexception {
			redisserializer<string> serializer = getredisserializer();
			for (int i = 0; i < list.size(); i++) {
				user user = list.get(i);
				byte[] key = serializer.serialize(user.getid());
				// 将id序列化成key
				byte[] value = serializer.serialize(user.getname());
				connection.setnx(key, value);
			}
			return true;
		}
	}
	, false, true);
	return result;
}
public void delete(string key) {
	redistemplate.delete(key);
}
public void delete(list<string> keys) {
	redistemplate.delete(keys);
}
public boolean update(final user user) {
	string key = user.getid();
	if(get(key) == null) {
		throw new nullpointerexception("数据行不存在,key = " + key);
	}
	boolean result = redistemplate.execute(new rediscallback<boolean>() {
		public boolean doinredis(redisconnection connection) throws dataaccessexception {
			redisserializer<string> serializer = getredisserializer();
			byte[] key = serializer.serialize(user.getid());
			// 将id序列化成key
			byte[] value = serializer.serialize(user.getname());
			connection.set(key, value);
			return true;
		}
	}
	);
	return result;
}
public user get(final string keyid) {
	user user = redistemplate.execute(new rediscallback<user>() {
		public user doinredis(redisconnection connection) throws dataaccessexception {
			redisserializer<string> serializer = getredisserializer();
			byte[] key = serializer.serialize(keyid);
			byte[] value = connection.get(key);
			if(value == null) {
				return null;
			}
			string name = serializer.deserialize(value);
			return new user(keyid, name, null);
		}
	}
	);
	return user;
}
}

redistest.java（junit测试类）

package com.redis.test;
import java.util.arraylist;
import java.util.list;
import org.junit.test;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.test.context.contextconfiguration;
import org.springframework.test.context.junit4.abstractjunit4springcontexttests;
import org.springframework.util.assert;
/**
 * junit在spring context环境下测试
 */
@contextconfiguration(locations={"classpath*:beans.xml"})
public class redistest extends abstractjunit4springcontexttests {
	@autowired
	  private iuserdao userdao;
	/** 增加单个用户 */
	@test
	  public void testadduser() {
		user user = new user("user1", "password1", null);
		boolean result = userdao.add(user);
		assert.istrue(result);
		system.out.println("添加结果：" + result);
	}
	/** 批量新增普通方式,5286ms */
	@test
	  public void testaddusers1() {
		list<user> list = new arraylist<user>();
		for (int i = 10; i < 50000; i++) {
			user user = new user();
			user.setid("user" + i);
			user.setname("password" + i);
			list.add(user);
		}
		long begin = system.currenttimemillis();
		for (user user : list) {
			userdao.add(user);
		}
		system.out.println(system.currenttimemillis() - begin);
	}
	/** 批量新增pipeline方式,484ms */
	@test
	  public void testaddusers2() {
		list<user> list = new arraylist<user>();
		for (int i = 50000; i < 100000; i++) {
			user user = new user();
			user.setid("user" + i);
			user.setname("password" + i);
			list.add(user);
		}
		long begin = system.currenttimemillis();
		boolean result = userdao.add(list);
		assert.istrue(result);
		system.out.println(system.currenttimemillis() - begin);
	}
	/** 更新 */
	@test
	  public void testupdate() {
		user user = new user();
		user.setid("user1");
		user.setname("new_password");
		boolean result = userdao.update(user);
		assert.istrue(result);
	}
	/** 删除 */
	@test
	  public void testdelete() {
		string key = "user1";
		userdao.delete(key);
	}
	/** 批量删除 */
	@test
	  public void testdeletes() {
		list<string> list = new arraylist<string>();
		for (int i = 0; i < 10; i++) {
			list.add("user" + i);
		}
		userdao.delete(list);
	}
	/** 读取 */
	@test
	  public void testgetuser() {
		string id = "user1";
		user user = userdao.get(id);
		assert.notnull(user);
		system.out.println(user);
	}
}

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