public static void testReflect(Object model) throws NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException{
Field[] field = model.getClass().getDeclaredFields(); //獲取實體類的所有屬性，返回Field數組
for(int j=0 ; j<field.length ; j++){ //遍歷所有屬性
String name = field[j].getName(); //獲取屬性的名字

System.out.println("attribute name:"+name);
name = name.substring(0,1).toUpperCase()+name.substring(1); //將屬性的首字符大寫，方便構造get，set方法
String type = field[j].getGenericType().toString(); //獲取屬性的類型
if(type.equals("class java.lang.String")){ //如果type是類類型，則前面包含"class "，後面跟類名
Method m = model.getClass().getMethod("get"+name);
String value = (String) m.invoke(model); //調用getter方法獲取屬性值
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());
}
}
}
}

java中遍歷類中的屬性