解析sql語句中參數名然後根據發射獲取對應參數值

package com.fw.utils;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.log4j.Logger;


import com.fw.common.sql.SqlHandler;
import com.ve.vo.UserVO;
/**
 * 字段解析、組裝容器
 * @description 
 * @author zhanglm
 * @date   2014-4-28
 */
public class ParseUtils<T extends Object> 
{
	
	private static Logger log = Logger.getLogger(ParseUtils.class);
	
	
	/**
	 * 解析sql中的參數，通過反射機制根據參數名注入對應的vo中的值放入list中
	 * @param sqlId
	 * @param obj
	 * @return
	 */
	public static List<Object> parseVoToList(String sql,Object obj)
	{
		List<Object> paramList = new ArrayList<Object>();
		List<String> tempList = new ArrayList<String>();
		// 匹配參數 "(空格多個)(任意字符)(空格多個)(= ?)"
		String regex = "(\\s*)(\\w*)(\\s*)(=\\s*\\?)";
		Pattern p = Pattern.compile(regex);
		Matcher m = p.matcher(sql);
		while(m.find()){  
			tempList.add(m.group(2));
        } 
		// 通過反射機制找到對應的參數內容放到 參數中
		if(tempList.size()>0)
		{
			Class<?> c = obj.getClass();
			java.lang.reflect.Field[] field = c.getDeclaredFields();
			for (int i = 0; i < field.length; i++) {
				field[i].setAccessible(true);
				try {
					if(field[i].get(obj)!=null)
					{
						//System.out.println(field[i].getName());
						//System.out.println(field[i].get(obj));
						for(String paramname:tempList)
						{
							if(paramname.equalsIgnoreCase(field[i].getName().trim()))
							{
								paramList.add(field[i].get(obj));
							}
							
						}
					}
				} catch (IllegalArgumentException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (IllegalAccessException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
		
		return paramList;
		
	}
	
	
	
	/**
	 * 解析sql中的參數，通過反射機制根據sql中的參數名注入對應的map中
	 * @param sqlId
	 * @param vo
	 * @return
	 */
	public static Map<String,Object> parseVoToMap(String sql,Object obj)
	{
		List<Object> paramList = new ArrayList<Object>();
				// 找出參數名
		String regex = "(\\s*)(\\w*)(\\s*)(=\\s*\\?)";
		Pattern p = Pattern.compile(regex);
		Matcher m = p.matcher(sql);
		Map<String,Object> map = new HashMap<String, Object>();
		while(m.find()){  
			paramList.add(m.group(2));
			map.put(m.group(2).trim().toLowerCase(), "");
        } 
		// 通過反射機制找到對應的參數內容放到 參數中
		if(!map.isEmpty())
		{
			Class<?> c = obj.getClass();
			java.lang.reflect.Field[] field = c.getDeclaredFields();
			for (int i = 0; i < field.length; i++) {
				field[i].setAccessible(true);
				try {
					if(field[i].get(obj)!=null)
					{
						//System.out.println(field[i].getName());
						//System.out.println(field[i].get(obj));
						if(map.containsKey(field[i].getName().trim().toLowerCase()))
						{
							map.put(field[i].getName().trim().toLowerCase(), field[i].get(obj));
						}
					}
				} catch (IllegalArgumentException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (IllegalAccessException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
		
		return map;
		
	}
	
	

	
	
	public static void main(String[] args)throws Exception {
		ParseUtils<UserVO> p = new ParseUtils<UserVO>();
		//...		
	}
	
	
}