JAVA反射获取类的属性及类型

 

通过反射获取类属性字段 以及 调用类方法public class ModelClassHelper {     public static HashMap<String,Class> init(String classPath)     {         try {             //"com.geocompass.model.STSTBPRPModel"             HashMap<String,Class> fieldHashMap=new HashMap<String,Class>();             Class cls = Class.forName(classPath);  //com.geocompass.model.STSTBPRPModel             Field[] fieldlist = cls.getDeclaredFields();             for (int i = 0; i < fieldlist.length; i++) {                 Field fld = fieldlist[i];                 fieldHashMap.put(fld.getName(), fld.getType()); //                System.out.println("name = " + fld.getName()); //                System.out.println("decl class = " + fld.getDeclaringClass()); //                System.out.println("type = " + fld.getType()); //                System.out.println("-----");                            }             return fieldHashMap;         } catch (ClassNotFoundException e) {             // TODO Auto-generated catch block             e.printStackTrace();         }         return null;     }    public static String getTableName(String classPath)  {   try {    Class cls = Class.forName(classPath);    Method test=cls.getDeclaredMethod("getTableName" );    Object invoke = test.invoke(cls.newInstance());    return invoke.toString();    //cls.asSubclass(TabModel.class);   } catch (ClassNotFoundException e) {    // TODO Auto-generated catch block    e.printStackTrace();   } catch (SecurityException e) {    // TODO Auto-generated catch block    e.printStackTrace();   } catch (NoSuchMethodException e) {    // TODO Auto-generated catch block    e.printStackTrace();   } catch (IllegalArgumentException e) {    // TODO Auto-generated catch block    e.printStackTrace();   } catch (IllegalAccessException e) {    // TODO Auto-generated catch block    e.printStackTrace();   } catch (InvocationTargetException e) {    // TODO Auto-generated catch block    e.printStackTrace();   } catch (InstantiationException e) {    // TODO Auto-generated catch block    e.printStackTrace();   }    return "";  }}  

利用反射技术动态获取任意Java类实例的属性值

 

 

package org.apache.easframework.core.entity.impl;

import java.lang.reflect.Field;

public class TestEntity {    private String code;  private String name;    public void setCode(String code)  {   this.code = code;  }    public String getCode()  {   return this.code;  }    public void setName(String name)  {   this.name = name;  }    public String getName()  {   return this.name;  }    public static void main(String[] args) throws SecurityException, ClassNotFoundException, IllegalArgumentException, IllegalAccessException  {   TestEntity obj = new TestEntity();   obj.setName("name value");   obj.setCode("code value");   Field[] fds = Class.forName   ("org.apache.easframework.core.entity.impl.TestEntity").getDeclaredFields();      System.out.println(fds.length);   for(int i=0;i<fds.length;i++)   {   System.out.println(fds[i].get(obj));       }  }

}

 

转载自：

http://blog.csdn.net/wpcxyking/article/details/6139549    

 

转载于:https://www.cnblogs.com/wuhenke/archive/2012/03/07/2382936.html

相关资源：java反射遍历实体类属性和类型,并赋值和获取值的简单方法