Xmemcached与Spring 3.0的集成

昨天收到一个xmc的issue报告，大概的意思是将 Xmemcached与spring 2.5集成没有任何问题，但是将spring升级到3.0就会抛出一个异常，并且spring容器无法正常启动，异常信息类似“ Couldn't find a destroy method named 'shutdown' on bean XMemcachedClientFactoryBean”。更详细的情况可以看这里，这是这位朋友分析的结果，简单来说就是spring 3.0对于查找destroy method为空的情况处理不同了，过去是打个日志，现在是抛出一个异常。    问题说完，这里主要是介绍下这个问题的解决方式，事实上Xmemcached有一个没有被文档化的Spring配置方式，没有写入文档的主要考虑是以为wiki介绍的第一种方式已经足够，而builder的方式相对繁琐一些。通过XmemcachedClientBuilder的这个factory bean的factory-method，也就是build方法来构建MemcachedClient，这就可以绕开spring 3.0的这个问题。一个示范配置如下： < bean  name ="memcachedClientBuilder"  class ="net.rubyeye.xmemcached.XMemcachedClientBuilder" >          < constructor-arg >              < list >                  < bean  class ="java.net.InetSocketAddress" >                      < constructor-arg >                          < value > localhost </ value >                      </ constructor-arg >                      < constructor-arg >                          < value > 12000 </ value >                      </ constructor-arg >                  </ bean >              </ list >          </ constructor-arg >      </ bean >      < bean  name ="memcachedClient"  factory-bean ="memcachedClientBuilder"         factory-method ="build"  destroy-method ="shutdown"   />    memcachedClientBuilder作为一个factory-bean，接受一个InetSocketAddress列表作为构造函数传入，最后MemcachedClient就可以通过factory-method——也就是build方法创建了。    多个节点情况下，可能你想设置权重，那么传入memcachedClientBuilder的第二个构造函数 参数权重数组即可： < bean  name ="memcachedClientBuilder"  class ="net.rubyeye.xmemcached.XMemcachedClientBuilder" >          < constructor-arg >              < list >                  < bean  class ="java.net.InetSocketAddress" >                      < constructor-arg >                          < value > localhost </ value >                      </ constructor-arg >                      < constructor-arg >                          < value > 12000 </ value >                      </ constructor-arg >                  </ bean >                  < bean  class ="java.net.InetSocketAddress" >                      < constructor-arg >                          < value > localhost </ value >                      </ constructor-arg >                      < constructor-arg >                          < value > 12001 </ value >                      </ constructor-arg >                  </ bean >              </ list >          </ constructor-arg >          < constructor-arg >              < list >                  < value > 1 </ value >                  < value > 2 </ value >              </ list >          </ constructor-arg >      </ bean >      < bean  name ="memcachedClient"  factory-bean ="memcachedClientBuilder"         factory-method ="build"  destroy-method ="shutdown"   /> 上面的例子将localhost:12000的权重设置为1，而localhost:12001的权重设置为2。除了这些配置外，XmemcachedClientBuilder还有其他选项，如配置一致性哈希算法、连接池等，完整的配置例子如下： < bean  name ="memcachedClientBuilder"  class ="net.rubyeye.xmemcached.XMemcachedClientBuilder" >                  <!--  XMemcachedClientBuilder have two arguments.First is server list,and second is weights array.  -->                  < constructor-arg >                          < list >                                  < bean  class ="java.net.InetSocketAddress" >                                          < constructor-arg >                                                  < value > localhost </ value >                                          </ constructor-arg >                                          < constructor-arg >                                                  < value > 12000 </ value >                                          </ constructor-arg >                                  </ bean >                                  < bean  class ="java.net.InetSocketAddress" >                                          < constructor-arg >                                                  < value > localhost </ value >                                          </ constructor-arg >                                          < constructor-arg >                                                  < value > 12001 </ value >                                          </ constructor-arg >                                  </ bean >                          </ list >                  </ constructor-arg >                  < constructor-arg >                          < list >                                  < value > 1 </ value >                                  < value > 2 </ value >                          </ list >                  </ constructor-arg >                  < property  name ="connectionPoolSize"  value ="2" ></ property >                  < property  name ="commandFactory" >                          < bean  class ="net.rubyeye.xmemcached.command.TextCommandFactory" ></ bean >                  </ property >                  < property  name ="sessionLocator" >                          < bean  class ="net.rubyeye.xmemcached.impl.KetamaMemcachedSessionLocator" ></ bean >                  </ property >                  < property  name ="transcoder" >                          < bean  class ="net.rubyeye.xmemcached.transcoders.SerializingTranscoder"   />                  </ property >          </ bean >          <!--  Use factory bean to build memcached client  -->          < bean  name ="memcachedClient"  factory-bean ="memcachedClientBuilder"                 factory-method ="build"  destroy-method ="shutdown" /> 文章转自庄周梦蝶  ，原文发布时间 2009-12-24 相关资源：敏捷开发V1.0.pptx