连接池的配置问题

同学你好，问一下同学使用的本地的Redis吗？如果是，如下配置应该改为localhost，如：

祝：学习愉快~

这里是

jedis.properties配置：

jedis.host = 192.168.0.113
jedis.port = 6379
jedis.pool.maxTotal = 100
jedis.pool.maxIdle = 20
jedis.pool.maxWaitMillis = 30000
jedis.pool.testOnBorrow = true

这里是

spring_redis.xml配置：

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

<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
   <!--当前这个连接池的连接数最大值-->
   <property name="maxTotal" value="${jedis.pool.maxTotal}"/>
   <!--当前这个连接池中空闲并随时待命的连接数最大值-->
   <property name="maxIdle" value="${jedis.pool.maxIdle}"/>
   <!--当前这个连接池 如果没有可用的空闲的连接时，等待连接归还的时间的最大值，超出则抛出异常-->
   <property name="maxWaitMillis" value="${jedis.pool.maxWaitMillis}"/>
   <!--在获取连接时，连接池会检查当前这个连接是否有效，如果无效则重新获取下一条连接-->
   <property name="testOnBorrow"  value="${jedis.pool.testOnBorrow}"/>
</bean>

<bean id="jedisPoolUtil" class="com.imooc.o2o.cache.JedisPoolUtil">
   <constructor-arg index="0" ref="jedisPoolConfig"/>
   <constructor-arg index="1" value="${jedis.host}"/>
   <constructor-arg index="2" value="${jedis.port}"/>
</bean>

<bean id="jedisUtil" class="com.imooc.o2o.cache.JedisUtil">
   <property name="jedisPool" ref="jedisPoolUtil"/>
</bean>

这里是

java工具类JedisPoolUtil：

public class JedisPoolUtil {

   private JedisPool jedisPool;

   public JedisPoolUtil() {

   }

   public JedisPoolUtil(final JedisPoolConfig config, final String host, final int port) {
       try {
           jedisPool = new JedisPool(config, host, port);
       } catch (Exception e) {
           throw e;
       }
   }

   public JedisPool getJedisPool() {
       return jedisPool;
   }

   public void setJedisPool(JedisPool jedisPool) {
       this.jedisPool = jedisPool;
   }
}

这里是

java工具类JedisUtil：

public class JedisUtil {

   private JedisPool jedisPool;

   public JedisUtil() {

   }

   public Jedis getJedis() {
       return jedisPool.getResource();
   }

   public JedisPool getJedisPool() {
       return jedisPool;
   }

   public void setJedisPool(JedisPoolUtil jedisPool) {
       this.jedisPool = jedisPool.getJedisPool();
   }

}

这里是

Junit测试方法：

@Test
public void jedisTest() {
   Jedis jedis = jedisUtil.getJedis();
   jedis.auth("553774989");
   String pong = jedis.ping();
   System.out.println(pong);
   jedis.select(0);
   jedis.set("pretty", "girl");
   String pretty = jedis.get("pretty");
   System.out.println(pretty);
}

这里是

异常信息：

redis.clients.jedis.exceptions.JedisExhaustedPoolException: Could not get a resource since the pool is exhausted

    at redis.clients.jedis.util.Pool.getResource(Pool.java:53)
    at redis.clients.jedis.JedisPool.getResource(JedisPool.java:288)
    at com.imooc.o2o.cache.JedisUtil.getJedis(JedisUtil.java:15)
    at com.imooc.o2o.cache.JedisTest.jedisTest(JedisTest.java:20)
    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:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    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.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:325)
    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$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.util.NoSuchElementException: Unable to validate object
    at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:486)
    at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:349)
    at redis.clients.jedis.util.Pool.getResource(Pool.java:50)
    ... 33 more

同学你好!

1. 一般情况都会使用连接池管理redis，这样可以避免资源的浪费

2. 老师这里是源码是没有报错的，建议同学可以贴一下你报错的配置、以及项目结构。老师在本地测试一下。

祝学习愉快~