java反射遍历实体类属性和类型,并赋值和获取值

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import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import java.util.Date;/** * 获取实体类型的属性名和类型 * @param model 为实体类 * @author kou  为传入参数 */public class GetModelNameAndType{    public static void testReflect(Object model) throws SecurityException,            NoSuchMethodException, IllegalArgumentException,            IllegalAccessException, InvocationTargetException, InstantiationException    {        // 获取实体类的所有属性，返回Field数组        Field[] field = model.getClass().getDeclaredFields();        // 获取属性的名字        String[] modelName = new String[field.length];        String[] modelType = new String[field.length];        for (int i = 0; i < field.length; i++)        {            // 获取属性的名字            String name = field[i].getName();            modelName[i] = name;            // 获取属性类型            String type = field[i].getGenericType().toString();            modelType[i] = type;                        //关键。。。可访问私有变量            field[i].setAccessible(true);            //给属性设置            field[i].set(model,  field[i].getType().getConstructor(field[i].getType()).newInstance("kou"));            // 将属性的首字母大写            name = name.replaceFirst(name.substring(0, 1), name.substring(0, 1)                    .toUpperCase());            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);                // 调用getter方法获取属性值                String value = (String) m.invoke(model);                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());                }            }        }    }    public static void main(String[] args)    {        try        {            testReflect(new VO());        }        catch (SecurityException e)        {            e.printStackTrace();        }        catch (IllegalArgumentException e)        {            e.printStackTrace();        }        catch (NoSuchMethodException e)        {            e.printStackTrace();        }        catch (IllegalAccessException e)        {            e.printStackTrace();        }        catch (InvocationTargetException e)        {            e.printStackTrace();        }        catch (InstantiationException e)        {            e.printStackTrace();        }    }}
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