Initializingbean,factorybean detailed

Reference article:

http://tianya23.blog.51cto.com/1081650/660273/

http://layznet.iteye.com/blog/906619

Initializingbean

When spring initializes the bean

If the bean implements the Initializingbean interface, the Afterpropertiesset method is called automatically.

If the bean is implemented with the Initializingbean interface, and Init-method is specified in the configuration file, the system calls the Afterpropertiesset method first and then the method specified in Init-method.

code example

package com.chinaseacom.store.common;import java.text.simpledateformat;import  java.util.arraylist;import java.util.list;import org.apache.commons.lang3.stringutils;import  org.springframework.beans.factory.initializingbean;import  org.springframework.beans.factory.annotation.autowired;import org.springframework.stereotype.repository; import redis.clients.jedis.jedispoolconfig;import redis.clients.jedis.jedisshardinfo;import  redis.clients.jedis.shardedjedis;import redis.clients.jedis.shardedjedispool; @Repositorypublic  class  IDGenerator  implements  InitializingBean{ private ShardedJedisPool  Shardedjedispool; simpledateformat yymmdd=new simpledateformat ("YYMMddHHMMSS");  @Autowired  private IDGeneratorPoolConfig idgeneratorPoolConfig; public<T extends  BASEOBJECT&GT;&NBSP;LONG&NBSP;INCR (Class<t> entityclass)  {  long result = null;  shardedjedis sjedis = null;  try {    result = shardedjedispool.getresource (). INCR (Entityclass.getname ());   }  catch  (exception e)  {   e.printstacktrace ();  }finally{    shardedjedispool.returnresourceobject (Sjedis);   }    if (" Com.chinaseacom.store.order.model.Orders ". EndsWith (Entityclass.getname ())) {   result =new  long ( yymmdd.format ( system.currenttimemillis ())  +   ( result%100000)/10000  +  ( result%10000)/1000 +   (result%1000)/100 +    (result%100 )/10 +   (result%10)/1   );   }  return result; }   public void afterpropertiesset ()  throws Exception {  if  ( Shardedjedispool == null)  {   jedispoolconfig config = new jedispoolconfig ();//      if  (Stringutils.isnumeric (idgeneratorpoolconfig.getmaxtotal))  {     config.setmaxtotal (New integer (Idgeneratorpoolconfig.getmaxtotal ()));//     }   if  (Stringutils.isnumeric (idgeneratorpoolconfig.getmaxidle))  {     config.setmaxidle (New integer (Idgeneratorpoolconfig.getmaxidle ()));//       }   if  (Stringutils.isnumeric (idgeneratorpoolconfig.getminidle))   {    config.setminidle (New integer (Idgeneratorpoolconfig.getminidle ()));//      }   if  (Stringutils.isnumeric ( Idgeneratorpoolconfig.getmaxwaitmillis ())  {    config.setmaxwaitmillis (new  Integer (Idgeneratorpoolconfig      .getMaxwaitmillis ()));     }   config.settestonborrow (true);//When Borrow a Jedis instance, Whether the validate operation is performed in advance, and if true, the resulting Jedis instance is available;    list<jedisshardinfo> jdsinfolist =  new ArrayList<JedisShardInfo> (;   for ) (idgeneratorhostconfig  Mhonstconf : idgeneratorpoolconfig     .getidgeneratorhostconfig ())  {     jedisshardinfo info = new jedisshardinfo (Mhonstconf.getHost (),       mhonstconf.getport ());     if (StringUtils.isNotEmpty ( Mhonstconf.getpassword ())) {     info.setpassword (Mhonstconf.getpassword ());     }    info.setconnectiontimeout (1000000);     Info.setsotimeout (2000000);     jdsinfolist.add (info);   }       shardedjedispool&Nbsp;= new shardedjedispool (config, jdsinfolist);  }   }   Public static void main (String[] arg) {  simpledateformat yymmdd=new  SimpleDateFormat ("Yymmddhhmmss");   long result=123456789l;  system.out.println (new  long ( yymmdd.format ( system.currenttimemillis ())  + ( result%100000)/10000 +   ( result%10000)/1000 +   (result%1000)/100 +    (result%100)/10  +   (result%10)/1   );   system.out.println (New long (  Yymmdd.format ( system.currenttimemillis ()));   system.out.println (Integer.max_value);   system.out.println (long.max_value);  }}

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Initializingbean,factorybean detailed