利用反射机制，遍历POJO对象的各个字段名及属性

拼搏现实的明天。 2022-07-16 18:56 195阅读 0赞

package reflect;

import java.lang.reflect.Field;  
import java.lang.reflect.InvocationTargetException;  
import java.lang.reflect.Method;

public class ReflectionTest \{    
 private String name = "Jhon";

private String city = "new york";

public String getCity() \{    
  return city;    
 \}

public void setCity(String city) \{    
  this.city = city;    
 \}

public String getName() \{    
  return name;    
 \}

public void setName(String name) \{    
  this.name = name;    
 \}

public static void main(String args\[\]) \{    
  ReflectionTest tfpt = new ReflectionTest();    
  try \{    
   Class reClass = Class    
   .forName("reflect.ReflectionTest");    
   //通过Method获取  
   Method methods\[\] = reClass.getDeclaredMethods();    
   for (int i = 0; i < methods.length; i++) \{    
    if (methods\[i\].getName().startsWith("get")) \{    
     Object retobj = methods\[i\].invoke(tfpt, null);    
     System.out.println(methods\[i\].getName() + "="   
       + (String) retobj);    
    \}  
   \}  
   //通过Field获取  
   Field field\[\] = reClass.getDeclaredFields();  
   for (int i = 0; i < field.length; i++) \{    
     Object retobj = field\[i\].get(tfpt);  
     System.out.println(field\[i\].getName() + "="  
       + retobj);    
   \}  
  \} catch (ClassNotFoundException e) \{    
   e.printStackTrace();    
  \} catch (IllegalArgumentException e) \{    
   e.printStackTrace();    
  \} catch (IllegalAccessException e) \{    
   e.printStackTrace();    
  \} catch (InvocationTargetException e) \{    
   e.printStackTrace();    
  \}    
 \}    
\}