rczx_grjl_search_action.java

这个程序是花了好几十万请人开发的

package struts.action;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.Connection;
import java.util.Vector;

import javabean.*;

public class rczx_grjl_search_action extends Action{
//	初始化连接池	
	private ConnectionPool pool;
	
	public rczx_grjl_search_action()
	{
//		从连接池中获得一个连接池实例
		pool=ConnectionPool.getInstance();
	}
	public ActionForward  execute (
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response)
		throws Exception 
		{			
			Connection con=null;
			ActionErrors errors=new ActionErrors();
			
			try
			{
				String str="",CLASS="",WORKTIME="",SEX="",GRADE="";
//   			获得查询参数	
				if(request.getParameter("CLASS")!=null)
				{
					CLASS=request.getParameter("CLASS");
					CLASS=new String(CLASS.getBytes("ISO-8859-1"));
				}
				if(request.getParameter("WORKTIME")!=null)
				{
					WORKTIME=request.getParameter("WORKTIME");
					WORKTIME=new String(WORKTIME.getBytes("ISO-8859-1"));
				}
				if(request.getParameter("SEX")!=null)
				{
					SEX=request.getParameter("SEX");
					SEX=new String(SEX.getBytes("ISO-8859-1"));
				}
				if(request.getParameter("GRADE")!=null)
				{						
					GRADE=request.getParameter("GRADE");
					GRADE=new String(GRADE.getBytes("ISO-8859-1"));
				}
//				根据参数的不同完成不同的查询语句	
                //0000			
				if(CLASS.equals("")&&WORKTIME.equals("")&&SEX.equals("")&&GRADE.equals(""))
				{
					str="SELECT * FROM GRJL";
				}					
				//  1000			
				if(!CLASS.equals("")&&WORKTIME.equals("")&&SEX.equals("")&&GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE CLASS="+"'"+CLASS+"'";
				}
				//  0100
				if(CLASS.equals("")&&!WORKTIME.equals("")&&SEX.equals("")&&GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE WORKTIME="+"'"+WORKTIME+"'";
				}
				//  1100
				if(!CLASS.equals("")&&!WORKTIME.equals("")&&SEX.equals("")&&GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE CLASS="+"'"+CLASS+"'"+"and WORKTIME="+"'"+WORKTIME+"'";
				}
				//  0010
				if(CLASS.equals("")&&WORKTIME.equals("")&&!SEX.equals("")&&GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE SEX="+"'"+SEX+"'";
				}
				//  1010
				if(!CLASS.equals("")&&WORKTIME.equals("")&&!SEX.equals("")&&GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE CLASS="+"'"+CLASS+"'"+"and SEX="+"'"+SEX+"'";
				}
				//  0110
				if(CLASS.equals("")&&!WORKTIME.equals("")&&!SEX.equals("")&&GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE WORKTIME="+"'"+WORKTIME+"'"+"and SEX="+"'"+SEX+"'";
				}
				//  1110
				if(!CLASS.equals("")&&!WORKTIME.equals("")&&!SEX.equals("")&&GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE CLASS="+"'"+CLASS+"'"+"and WORKTIME="+"'"+WORKTIME+"'"+"and SEX="+"'"+SEX+"'";
				}
				//  0001
				if(CLASS.equals("")&&WORKTIME.equals("")&&SEX.equals("")&&!GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE GRADE="+"'"+GRADE+"'";
				}
				//  1001
				if(!CLASS.equals("")&&WORKTIME.equals("")&&SEX.equals("")&&!GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE CLASS="+"'"+CLASS+"'"+"and GRADE="+"'"+GRADE+"'";
				}
				//  0101
				if(CLASS.equals("")&&!WORKTIME.equals("")&&SEX.equals("")&&!GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE and WORKTIME="+"'"+WORKTIME+"'"+"and GRADE="+"'"+GRADE+"'";;
				}
				//  1101
				if(!CLASS.equals("")&&!WORKTIME.equals("")&&SEX.equals("")&&!GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE CLASS="+"'"+CLASS+"'"+"and WORKTIME="+"'"+WORKTIME+"'"+"and GRADE="+"'"+GRADE+"'";
				}
				//  0011
				if(CLASS.equals("")&&WORKTIME.equals("")&&!SEX.equals("")&&!GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE SEX="+"'"+SEX+"'"+"and GRADE="+"'"+GRADE+"'";
				}
				//  1011
				if(!CLASS.equals("")&&WORKTIME.equals("")&&!SEX.equals("")&&!GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE CLASS="+"'"+CLASS+"'"+"and SEX="+"'"+SEX+"'"+"and GRADE="+"'"+GRADE+"'";
				}
				//  0111
				if(CLASS.equals("")&&!WORKTIME.equals("")&&!SEX.equals("")&&!GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE WORKTIME="+"'"+WORKTIME+"'"+"and SEX="+"'"+SEX+"'"+"and GRADE="+"'"+GRADE+"'";
				}
				//  1111
				if(!CLASS.equals("")&&!WORKTIME.equals("")&&!SEX.equals("")&&!GRADE.equals(""))
				{
					str="SELECT * FROM GRJL WHERE CLASS="+"'"+CLASS+"'"+"and WORKTIME="+"'"+WORKTIME+"'"+"and SEX="+"'"+SEX+"'"+"and GRADE="+"'"+GRADE+"'";
				}
//				从连接池中获得一个连接										
				con=pool.getConnection();
//				查询执行部分，并为记录的分页做参数处理						
				Vector vec=new Vector();
				GrjlDAO grjlDAO=new GrjlDAO(con);				
				Page_Number pagenumber=new Page_Number(con);
				int pagesize=20;
				String code=request.getParameter("code");
				if(code==null) code="1";
				pagenumber.setPagesize(pagesize);
				pagenumber.setRowcount(str);
				pagenumber.setPagecount();
				vec=grjlDAO.find_fenye(Integer.parseInt(code),pagesize,str);
				request.setAttribute("vec",vec);
				request.setAttribute("code",code);
				request.setAttribute("pagecount",String.valueOf(pagenumber.getPagecount()));
				request.setAttribute("CLASS",CLASS);
				request.setAttribute("WORKTIME",WORKTIME);
				request.setAttribute("SEX",SEX);
				request.setAttribute("GRADE",GRADE);
//				释放连接					
				if(con!=null) con.close();
				return mapping.findForward("success");					
			}
//			捕获一些可能的错误            			
			catch(Throwable e)
			{
				e.printStackTrace();
				ActionError error=new ActionError(e.getMessage());
				errors.add(ActionErrors.GLOBAL_ERROR,error);
			}
//			如果连接未释放，释放连接
			if(con!=null) con.close();
			saveErrors(request,errors);
			return new ActionForward(mapping.getInput());
		}
}