Redis中Jedis版本升级后的问题总结

缺乏、安全感 2022-05-30 22:52 446阅读 0赞

摘要： 本文讲的是Redis中Jedis版本升级后的问题总结， 最近因为jedis 2.1.0接口的一些问题，升级版本了版本，结果出现了一个诡异的问题；时常能正常启动，时常出现jedisPool初始化时 java.lang.IllegalArgumentException: hostname

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最近因为jedis 2.1.0接口的一些问题，升级版本了版本，结果出现了一个诡异的问题；时常能正常启动，时常出现jedisPool初始化时 java.lang.IllegalArgumentException: hostname can’t be null

原因出在spring JedisPool构造参数上，之前spring的配置如下

<bean id="jedisPool" class="redis.clients.jedis.JedisPool">      <constructor-arg ref="jedisConfig" />     <constructor-arg value="${redis.host}" />     <constructor-arg type="int" value="${redis.port}" /> </bean>

明显是因为host没有注入，但时常又可以，诡异！！！之后弄了jedis源码，加了日志，才定位到原因，查看JedisPool源码，其中的两构造函数如下

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)); }

我们调用的是第一个构造函数，但事实是可能会调用第二个构造函数；port当做了timeout，host当做了URI。

不是很明白spring为什么会把value是字符串的参数匹配到URI上，那就明确指定类型吧

<bean id="jedisPool" class="redis.clients.jedis.JedisPool">      <constructor-arg ref="jedisConfig" />     <constructor-arg type="java.lang.String" value="${redis.host}" />     <constructor-arg type="int" value="${redis.port}" /> </bean>

jedis之前的异常为，方面遇到同问题的同学

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$$FastClassByCGLIB$$b34212a.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:87)         at com.caucho.server.webapp.WebAppFilterChain.doFilter(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)         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:75)         at redis.clients.jedis.BinaryJedis.connect(BinaryJedis.java:1572)         at redis.clients.jedis.JedisFactory.makeObject(JedisFactory.java:69)

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