java中遍历实体类属性和类型，属性值

╰半橙微兮° 2021-10-06 14:20 409阅读 0赞

# [java中遍历实体类属性和类型，属性值][java] #

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());  
                    \}  
                \}                  
            \}  
    \}

[java]: http://www.cnblogs.com/137913828S2/archive/2012/07/10/2584774.html