java中遍历一个对象的所有属性

本文转载自（http://www.cnblogs.com/137913828S2/archive/2012/07/10/2584774.html）

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());

                    }

                }                

            }

    }