java获取对象属性类型、属性名称、属性值

转：http://blog.csdn.net/linshutao/article/details/7693625

/** 
 * 根据属性名获取属性值 
 * */  
   private Object getFieldValueByName(String fieldName, Object o) {  
       try {    
           String firstLetter = fieldName.substring(0, 1).toUpperCase();    
           String getter = "get" + firstLetter + fieldName.substring(1);    
           Method method = o.getClass().getMethod(getter, new Class[] {});    
           Object value = method.invoke(o, new Object[] {});    
           return value;    
       } catch (Exception e) {    
           log.error(e.getMessage(),e);    
           return null;    
       }    
   }   
     
   /** 
    * 获取属性名数组 
    * */  
   private String[] getFiledName(Object o){  
    Field[] fields=o.getClass().getDeclaredFields();  
        String[] fieldNames=new String[fields.length];  
    for(int i=0;i