public class Table {
    String tableName;
    String mainPropertyName;
    static int count=1;
    static DBExcute dbExcute=(DBExcute)new ClassPathXmlApplicationContext("applicationContext.xml").getBean("dbExcute");
   
    Table(String tableName,String mainPropertyName){
        this.tableName=tableName;
        this.mainPropertyName=mainPropertyName;
        System.out.println("construct table"+(count++)+" use:"+dbExcute);
    }
        .............
        .............
     public static void main(String []dsf){
     new Table("user","1");
  }
}

如上只new Table(..)一次：
结果却是：
construct table1 use:null
construct table2 use:null
construct table3 use:null
construct table4 use:null
construct table5 use:null
construct table6 use:com.yijia_ctgu.DB.DBExcute@535b58


奇怪中。。。。。。。


明白了，spring容器初始化的时候，初始化dbDAO bean会生成五个table,可能是先初始化，后才赋值给dbExcute,所以刚开始的五个都是null.