今天沈宝问我一个将bean转成map的方法，一下子懵逼了。。。虽然不知道这样转想干啥，但是总感觉牛牛的样子。。。赶紧翻了下apache的common包，果然beantuils有这个功能，可以使用describe的方法

缺点和深浅复制一样，不能递归。直接上代码。

另外有个好的地方就是desciable转成map的时候会多一个class的属性，可以直接获取到当前bean的类

public class BeanTest extends BaseTest {    @Test    public void test() throws SQLException, IOException {        Abean abean=new Abean();        Abeans abeans=new Abeans();        //apache-common:beanuitls--简单类型        //testB:testemptyB        //class:class com.alibaba.dt.op.onedata.BeanTest$Abean        //testA:testemptyA        try {            Map beanMap=BeanUtils.describe(abean);            for(Object key:beanMap.keySet()){                System.out.println(key+":"+beanMap.get(key));            }        } catch (Exception e) {            e.printStackTrace();        }        //apache-common:beanuitls--复杂类型        //abeanList：com.alibaba.dt.op.onedata.BeanTest$Abean@4b2c5e02        //testC：testEmptyC        //class：class com.alibaba.dt.op.onedata.BeanTest$Abeans        try {            Map beanMap=BeanUtils.describe(abeans);            for(Object key:beanMap.keySet()){                System.out.println(key+"："+beanMap.get(key));            }        } catch (Exception e) {            e.printStackTrace();        }        System.out.println("love u!");    }    public class Abean{        String testA;        String testB;        public Abean(String testA, String testB) {            this.testA = testA;            this.testB = testB;        }        public Abean(){            this.testA="testemptyA";            this.testB="testemptyB";        }        public String getTestA() {            return testA;        }        public void setTestA(String testA) {            this.testA = testA;        }        public String getTestB() {            return testB;        }        public void setTestB(String testB) {            this.testB = testB;        }    }    public class Abeans{        List
    
      abeanList;        String testC;        public Abeans() {            this.testC="testEmptyC";            List
     
       abeanList=new ArrayList
      
       ();            for(int i=0;i<3;i++){                Abean abean=new Abean("testA"+i,"testB"+i);               abeanList.add(abean);            }            this.abeanList = abeanList;        }        public List
       
         getAbeanList() {            return abeanList;        }        public void setAbeanList(List
        
          abeanList) {            this.abeanList = abeanList;        }        public String getTestC() {            return testC;        }        public void setTestC(String testC) {            this.testC = testC;        }    }