java中遍历实体类属性和类型,属性值

public static void testReflect(Object model) throws NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException{
        Field[] field = model.getClass().getDeclaredFields();        //获取实体类的所有属性,返回Field数组 
        for(int j=0 ; j<field.length ; j++){     //遍历所有属性
                String name = field[j].getName();    //获取属性的名字
               
                System.out.println("attribute name:"+name);    
                name = name.substring(0,1).toUpperCase()+name.substring(1); //将属性的首字符大写,方便构造get,set方法
                String type = field[j].getGenericType().toString();    //获取属性的类型
                if(type.equals("class java.lang.String")){   //如果type是类类型,则前面包含"class ",后面跟类名
                    Method m = model.getClass().getMethod("get"+name);
                    String value = (String) m.invoke(model);    //调用getter方法获取属性值
                    if(value != null){

                        System.out.println("attribute value:"+value);
                    }
                }
                if(type.equals("class java.lang.Integer")){    
                    Method m = model.getClass().getMethod("get"+name);
                    Integer value = (Integer) m.invoke(model);
                    if(value != null){
                        System.out.println("attribute value:"+value);
                    }
                }
                if(type.equals("class java.lang.Short")){    
                    Method m = model.getClass().getMethod("get"+name);
                    Short value = (Short) m.invoke(model);
                    if(value != null){
                        System.out.println("attribute value:"+value);                    }
                }      
                if(type.equals("class java.lang.Double")){    
                    Method m = model.getClass().getMethod("get"+name);
                    Double value = (Double) m.invoke(model);
                    if(value != null){                   
                        System.out.println("attribute value:"+value); 
                    }
                }                 
                if(type.equals("class java.lang.Boolean")){
                    Method m = model.getClass().getMethod("get"+name);   
                    Boolean value = (Boolean) m.invoke(model);
                    if(value != null){                     
                        System.out.println("attribute value:"+value);
                    }
                }
                if(type.equals("class java.util.Date")){
                    Method m = model.getClass().getMethod("get"+name);                   
                    Date value = (Date) m.invoke(model);
                    if(value != null){
                        System.out.println("attribute value:"+value.toLocaleString());
                    }
                }               
            }
    }

posted @ 2012-07-10 15:44  人间烟火  阅读(55754)  评论(4编辑  收藏  举报