使用反射封装RowMapper

package com.xinhuanet.cloudDesk.dao.impl;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.sql.ResultSet;
import java.sql.SQLException;

import org.apache.log4j.Logger;
import org.springframework.jdbc.core.RowMapper;

public abstract class BaseRowMapper<T> implements RowMapper {
	private static final Logger log = Logger.getLogger(BaseRowMapper.class);

	@Override
	public T mapRow(ResultSet rs, int index) throws SQLException {
		try {
			Class clazz = Class.forName(this.getClassName());
			Object obj = clazz.newInstance();

			for (Class clazztemp = clazz; clazztemp != Object.class; clazztemp = clazztemp
					.getSuperclass()) {
				
				Field[] fields = clazztemp.getDeclaredFields();
				if (fields == null) {
					return null;
				}
				for (int i = 0; i < fields.length; i++) {
					String fieldName = fields[i].getName();
					Class fieldClass = fields[i].getType();
					String methodName = "set"
							+ fieldName.substring(0, 1).toUpperCase()
							+ fieldName.substring(1);
					Method method = clazztemp.getDeclaredMethod(methodName,
							new Class[] { fieldClass });
					Object param = null;
					try {
						param = rs.getObject(fieldName.toLowerCase());
						if(param != null) {
							method.invoke(obj, param);
						}
					} catch (Exception e) {
						log.error("fieldName:" + fieldName + "是" + fieldClass
								+ "目标参数是：" + param.getClass());
						log.error(e);
					}
				}
			}

			return (T) obj;

		} catch (Exception e) {
			log.error(e);
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 子类的类名
	 * 
	 * @return
	 */
	public abstract String getClassName();

}