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