Java 对象属性的遍历

package com.cn.mybatis.test;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Date;

import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import com.cn.mybatis.model.EdiTestTask;


public class mybatisTest {
    public static void main(String[] args) throws IOException, NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException{
        //mybatis的配置文件
        String conf="conf.xml";
        //使用类加载器加载mybatis的配置文件(它也加载关联的映射文件)
        InputStream is=mybatisTest.class.getClassLoader().getResourceAsStream(conf);
        //构建sqlSession的工厂
        SqlSessionFactory sessionFactory=new SqlSessionFactoryBuilder().build(is);
        SqlSession session=sessionFactory.openSession();
        String statement="com.cn.mybatis.mapper.taskMapper.getAllTask";
        EdiTestTask editt=session.selectOne(statement,"6c61bffed61141d7a908af0428ae57fb");
        if(editt!=null){
            Field[] field = editt.getClass().getDeclaredFields(); 
            for (int i = 0; i < field.length; i++) {
                String name=field[i].getName();  //获得对象的属性名称
                String type=field[i].getGenericType().toString();
                System.out.println("属性的类型:"+type);    
                name=name.substring(0,1).toUpperCase()+name.substring(1);  //构造get方法的名字
                Method m=editt.getClass().getMethod("get"+name);
                if(type.equals("int")||type.equals("class java.lang.Integer")){    //如果type是类类型,则前面包含"class ",后面跟类名
                    int val=(Integer)m.invoke(editt);
                    System.out.println(name+"的值:"+val);
                }
                if(type.equals("class java.lang.String")){
                    String val=(String)m.invoke(editt);
                    System.out.println(name+"的值:"+val);
                }
                
                
             if(type.equals("class java.lang.Short")){     
                    Short value = (Short) m.invoke(editt);
                    if(value != null){
                        System.out.println("attribute value:"+value);                   
                     }
                }       
                if(type.equals("class java.lang.Double")){     
                    Double value = (Double) m.invoke(editt);
                    if(value != null){                    
                        System.out.println("attribute value:"+value);  
                    }
                }                  
                if(type.equals("class java.lang.Boolean")){
                    Boolean value = (Boolean) m.invoke(editt);
                    if(value != null){                      
                        System.out.println("attribute value:"+value);
                    }
                }
                if(type.equals("class java.util.Date")){
                    Date value = (Date) m.invoke(editt);
                    if(value != null){
                        System.out.println("attribute value:"+value.toLocaleString());
                    }
                }               
                
                
            }
        }
    }

}
原文地址:https://www.cnblogs.com/renxiaoren/p/5238047.html