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redis报错汇总

在单元测试时，使用jedis通常遇到如下报错：

实例化报错->连接报错->权限报错。此报错是有顺序的：例如，若连接报错，说明实例化完成，即配置文件配对了。若权限报错，说明连接通了，但密码错误。若实例化就报错，说明配置文件配错了，没法启动redis客户端，更别说去连接了。

具体报错如下：

1.实例化报错

Failed to load ApplicationContext.
Error creating bean with name 'jedisPool' defined in class path resource [applicationContext-redis.xml]: 
Unsatisfied dependency expressed through constructor parameter 0: 
Ambiguous argument values for parameter of type [org.apache.commons.pool2.impl.GenericObjectPoolConfig] 
- did you specify the correct bean references as arguments?

 出现此错误，通常是配置文件出错：配置JedisPool出错。

2.连接报错

connect timed out

出现此错误，通常是网络问题。一般在公司里，内网外网防火墙等各种网络情况。记得切换网络。

3.权限报错

        1.没有配置password（如果需要密码）

NOAUTH Authentication required.

 出现此错误，说明配置文件没有配password。

        2.密码错误

ERR invalid password

出现此错误，说明密码错了。

需要注意：

如下配置是错误的，这也是导致实例化报错的主要原因。

    <bean id="jedisPool" class="redis.clients.jedis.JedisPool"><constructor-arg name="host" value="192.168.100.12"/><constructor-arg name="port" value="6379"/><constructor-arg name="password" value="xxx"/></bean>

 查看jedis源码，发现设置密码，JedisPool的构造参数如下：

    public JedisPool(GenericObjectPoolConfig poolConfig, String host, int port, int timeout, String password) {this(poolConfig, host, port, timeout, password, 0, (String)null);}

即，需要配置如下参数：

    <bean class="redis.clients.jedis.JedisPool" id="jedisPool" ><constructor-arg name="host" value="192.168.100.12"></constructor-arg><constructor-arg name="port" value="6379"></constructor-arg><constructor-arg name="password" value="xxx"></constructor-arg><constructor-arg name="timeout" value="3000"></constructor-arg><constructor-arg name="poolConfig" ref="jedisPoolConfig"></constructor-arg></bean><bean class="redis.clients.jedis.JedisPoolConfig" id="jedisPoolConfig"><property name="maxIdle" value="300" /><property name="maxTotal" value="1000" /><property name="maxWaitMillis" value="1000" /><property name="testOnBorrow" value="false" /><property name="blockWhenExhausted" value="false" /></bean>

如果redis没有设置密码的话，配置就可以很简单：

    <bean id="jedisPool" class="redis.clients.jedis.JedisPool"><constructor-arg name="host" value="192.168.100.12"/><constructor-arg name="port" value="6379"/></bean>

因为JedisPool提供了只需要ip地址和端口的构造参数，如下：

    public JedisPool(String host, int port) {this(new GenericObjectPoolConfig(), host, port, 2000, (String)null, 0, (String)null);}

补充：

bean的xml文件格式：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd"><!-- 这中间写bean -->
<!--    <bean id="jedisPool" class="redis.clients.jedis.JedisPool">-->
<!--        <constructor-arg name="host" value="192.168.100.12"/>-->
<!--        <constructor-arg name="port" value="6379"/>-->
<!--    </bean>--></beans>

单元测试类：

@RunWith(SpringRunner.class)//spring整合JUnit4
@ContextConfiguration(locations={"classpath:applicationContext-redis.xml"})//加载spring配置文件
public class BaseRedisTest {
}

 

==================分割线====================

文章到此已经结束，以下是紫薯布丁

Failed to load ApplicationContext.
Error creating bean with name 'jedisPool' defined in class path resource [applicationContext-redis.xml]: 
Unsatisfied dependency expressed through constructor parameter 0: 
Ambiguous argument values for parameter of type [org.apache.commons.pool2.impl.GenericObjectPoolConfig] 
- did you specify the correct bean references as arguments?

connect timed out

NOAUTH Authentication required.

ERR invalid password

    <bean id="jedisPool" class="redis.clients.jedis.JedisPool">
        <constructor-arg name="host" value="192.168.100.12"/>
        <constructor-arg name="port" value="6379"/>
        <constructor-arg name="password" value="xxx"/>
    </bean>

    public JedisPool(GenericObjectPoolConfig poolConfig, String host, int port, int timeout, String password) {
        this(poolConfig, host, port, timeout, password, 0, (String)null);
    }

    <bean class="redis.clients.jedis.JedisPool" id="jedisPool" >
        <constructor-arg name="host" value="192.168.100.12"></constructor-arg>
        <constructor-arg name="port" value="6379"></constructor-arg>
        <constructor-arg name="password" value="xxx"></constructor-arg>
        <constructor-arg name="timeout" value="3000"></constructor-arg>
        <constructor-arg name="poolConfig" ref="jedisPoolConfig"></constructor-arg>
    </bean>
    <bean class="redis.clients.jedis.JedisPoolConfig" id="jedisPoolConfig">
        <property name="maxIdle" value="300" />
        <property name="maxTotal" value="1000" />
        <property name="maxWaitMillis" value="1000" />
        <property name="testOnBorrow" value="false" />
        <property name="blockWhenExhausted" value="false" />
    </bean>

    <bean id="jedisPool" class="redis.clients.jedis.JedisPool">
        <constructor-arg name="host" value="192.168.100.12"/>
        <constructor-arg name="port" value="6379"/>
    </bean>

    public JedisPool(String host, int port) {
        this(new GenericObjectPoolConfig(), host, port, 2000, (String)null, 0, (String)null);
    }
 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

<!-- 这中间写bean -->
<!--    <bean id="jedisPool" class="redis.clients.jedis.JedisPool">-->
<!--        <constructor-arg name="host" value="192.168.100.12"/>-->
<!--        <constructor-arg name="port" value="6379"/>-->
<!--    </bean>-->

</beans>

@RunWith(SpringRunner.class)//spring整合JUnit4
@ContextConfiguration(locations={"classpath:applicationContext-redis.xml"})//加载spring配置文件
public class BaseRedisTest {
}