Summary of the problems after the Jedis version upgrade in Redis

Recently, because of the Jedis 2.1.0 interface problems, the upgrade version of the version, the result of a strange problem; often can start normally, often appear jedispool initialization java.lang.IllegalArgumentException: Hostname can ' t be null

The reason for this is the spring Jedispool constructor parameter, where spring is configured as follows

<bean id= "Jedispool" class= "Redis.clients.jedis.JedisPool" >

<constructor-arg ref= "Jedisconfig"/>< c1/> <constructor-arg value= "${redis.host}"/> <constructor-arg "

int" type= "value=}" ${redis.port

</bean>

Obviously because the host did not inject, but often can, strange!!! After the Jedis source code, added a log, to locate the reason, view Jedispool source code, the two constructors are as follows

Public Jedispool (Final Genericobjectpoolconfig poolconfig, final String host, final int port) {This

(Poolconfig, host , port, protocol.default_timeout, NULL, protocol.default_database, NULL);

Public

Jedispool (final genericobjectpoolconfig poolconfig, final URI URI, final int timeout) {

super (Poolconfig , New Jedisfactory (Uri.gethost (), Uri.getport (), timeout,

Jedisurihelper.getpassword (URI), Jedisurihelper.getdbindex (URI)!= null?

Jedisurihelper.getdbindex (URI): 0, NULL);

}

We call the first constructor, but the fact is that the second constructor may be invoked; Port as a timeout,host as a URI.

It's not clear why spring would match the parameter of value to a URI, so specify the type.

<bean id= "Jedispool" class= "Redis.clients.jedis.JedisPool" >

<constructor-arg ref= "Jedisconfig"/>< c1/> <constructor-arg type= "java.lang.String" value= "${redis.host}"/> <constructor-arg type=

"int" Val Ue= "${redis.port}"/>

</bean>

Jedis before the exception for, aspects encountered with the problem of the classmate

Redis.clients.jedis.exceptions.jedisconnectionexception: could not get a resource  from the pool         at  Redis.clients.util.Pool.getResource (pool.java:50)         at  Redis.clients.jedis.JedisPool.getResource (jedispool.java:88)         at  com.renhenet.modules.redis.redisservice.gethash (redisservice.java:364)          at com.renhenet.modules.member.memberredisservice.getmemberindustrybymemberid ( memberredisservice.java:240)         at  Com.renhenet.modules.member.MemberService.getMemberIndustry (memberservice.java:236)          at com.renhenet.modules.member.memberservice$ $FastClassByCGLIB $ $b 34212a.invoke ( <generated>)         at Org.springframework.cglib.proxy.MethodProxy.invoke (methodproxy.java:204)          at org.springframework.aop.framework.cglibaopproxy$cglibmethodinvocation.invokejoinpoint ( cglibaopproxy.java:698)         at 

Org.springframework.aop.framework.ReflectiveMethodInvocation.proceed (reflectivemethodinvocation.java:150)         at  Org.springframework.transaction.interceptor.transactioninterceptor$1.proceedwithinvocation ( transactioninterceptor.java:96)         at  Org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction ( transactionaspectsupport.java:260)         at 

Org.springframework.transaction.interceptor.TransactionInterceptor.invoke (transactioninterceptor.java:94)         at org.springfrAmework.aop.framework.ReflectiveMethodInvocation.proceed (reflectivemethodinvocation.java:172)          at org.springframework.aop.framework.cglibaopproxy$ Dynamicadvisedinterceptor.intercept (cglibaopproxy.java:631)         at  com.renhenet.modules.member.memberservice$ $EnhancerByCGLIB $$1638ea72.getmemberindustry (<generated> )         at  Com.renhenet.fw.struts2.interceptor.LoginRenheInterceptor.intercept (loginrenheinterceptor.java:68)          at com.opensymphony.xwork2.defaultactioninvocation.invoke ( defaultactioninvocation.java:246)         at  Com.renhenet.fw.struts2.interceptor.WebRenheInterceptor.intercept (webrenheinterceptor.java:27)          at com.opensymphony.xwork2.defaultactioninvocation.invoke ( Defaultactioninvocation.java:246)         at  Org.apache.struts2.impl.StrutsActionProxy.execute (strutsactionproxy.java:54)          at org.apache.struts2.dispatcher.dispatcher.serviceaction (Dispatcher.java:563)          at  Org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction (executeoperations.java:77)          at  Org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter ( strutsprepareandexecutefilter.java:99)         at  Com.renhenet.fw.struts2.filter.RenheStruts2Filter.doFilter (renhestruts2filter.java:32)          at com.caucho.server.dispatch.filterfilterchain.dofilter (FilterFilterChain.java :         at com.caucho.server.webapp.webappfilterchain.dofil)ter (webappfilterchain.java:187)         at  Com.caucho.server.dispatch.ServletInvocation.service (servletinvocation.java:265)          at com.caucho.server.hmux.hmuxrequest.handlerequest (hmuxrequest.java:436)   

      at com.caucho.server.port.tcpconnection.run (TcpConnection.java:682)         at com.caucho.util.threadpool$item.runtasks ( threadpool.java:730)         at com.caucho.util.threadpool$ Item.run (threadpool.java:649)         at java.lang.thread.run ( thread.java:745) Caused by: java.lang.illegalargumentexception: hostname can ' T be  null         at java.net.inetsocketaddress.checkhost ( inetsocketaddress.java:149)     &nbsP;   at java.net.inetsocketaddress.<init> (inetsocketaddress.java:216)          at redis.clients.jedis.connection.connect (Connection.java:142)          at redis.clients.jedis.binaryclient.connect (BinaryClient.java :         at redis.clients.jedis.binaryjedis.connect ( binaryjedis.java:1572)         at  Redis.clients.jedis.JedisFactory.makeObject (jedisfactory.java:69)