redis整合ssm，和解决遇到的几种报错

短命女 2023-06-16 10:35 8阅读 0赞

# redis整合ssm #

以下报错：  
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name ‘poolConfig’ defined in class path resource \[spring.xml\]: Could not resolve placeholder ‘redis.maxIdle’ in string value “$\{redis.maxIdle\}”; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder ‘redis.maxIdle’ in string value “$\{redis.maxIdle\}”  
是因为你配置文件里面有多个`<context:property-placeholder...>`  
解决方式：使用通配符\*放在一起

> `<context:property-placeholder location="classpath*:*.properties" />`

以下报错：  
Caused by: java.lang.NoClassDefFoundError: redis/clients/jedis/GeoUnit  
我也不知道为啥。

解决方式：

> ` <context:property-placeholder location="classpath*:*.properties" ignore-unresolvable="true"/>`

加上`ignore-unresolvable="true"`

# redis整合成功 #

pom包版本信息：

<dependency>
          <groupId>redis.clients</groupId>
          <artifactId>jedis</artifactId>
          <version>2.7.1</version>
        </dependency>
        <dependency>
          <groupId>org.springframework.data</groupId>
          <artifactId>spring-data-redis</artifactId>
          <version>1.6.2.RELEASE</version>
        </dependency>

redis-config.properties

redis.host=192.168.111.xxx
    redis.port=6379
    redis.pass=
    redis.database=0
    # 控制一个pool最多有多少个状态为idle（空闲的）的jedis实例
    redis.maxIdle=300
    # 当borrow引入一个jedis实例时，最大的等待时间毫秒，如果超过，则直接报错IedisConnectionException
    redis.maxWait=3000
    # jedis实例时，提前进入validate操作，如果为true,则为检测好的。
    redis.testOnBorrow=true

spring.xml中添加redis的配置信息

<?xml version="1.0" encoding="utf-8" ?>
    
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
    
        <context:annotation-config></context:annotation-config>
    
        
        <context:property-placeholder location="classpath*:*.properties" ignore-unresolvable="true"/>
    
        
        <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
            <property name="maxIdle" value="${redis.maxIdle}"/>
            <property name="maxWaitMillis" value="${redis.maxWait}"/>
            <property name="testOnBorrow" value="${redis.testOnBorrow}"/>
    
        </bean>
        
        <bean id="JedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" p:host-name="${redis.host}" p:port="${redis.port}" p:password="${redis.pass}" p:poolConfig-ref="poolConfig"/>
    
        
        <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
            <property name="connectionFactory" ref="JedisConnectionFactory"></property>
        </bean>
    
    </beans>

测试类

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzMzcxMDA0_size_16_color_FFFFFF_t_70]

--------------------

测试一些API

package com.redis.test;
    
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.data.redis.core.BoundValueOperations;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    
    
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations = { "classpath:spring.xml"})
    public class Demo { 
    
    
        @Autowired
        RedisTemplate redisTemplate;
    
        @Test
        public void test() { 
            System.out.println(redisTemplate);
        }
    
        @Test
        public void testSetString() { 
            redisTemplate.boundValueOps("name").set("zhangsan");
        }
    
        @Test
        public void testGetString() { 
            String val = (String) redisTemplate.boundValueOps("name").get();
            System.out.println(val);
        }
    
        @Test
        public void testDelString() { 
            redisTemplate.delete("name");
        }
    
           @Test
        public void testSize() { 
            //返回15,也不知道为什么，因为这个API，添加的值，在命令行下查看是有一些头信息的。
            System.out.println(redisTemplate.boundValueOps("name").size());
        }
    
    }

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