functag.java~7~

来自「采用web2.0技术,采用动态标签,sql语句全部存储在数据库里面.开发速度快.」· JAVA~7~ 代码 · 共 315 行

package com.sztheater.web.taglib;
import java.text.DateFormat;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.io.*;
import java.util.*;
import javax.servlet.http.*;
import com.sztheater.framework.util.*;
public class FuncTag{

	public static Object getObject(Object objValue,String s_item) {
                System.out.println("FuncTag getObject!");
		int     iPos = 0;
		String  para_name  = null;
		String  class_name = null;
		Object  vObj       = null;
		int     iIndex     = 0;
		int     iSize      = 0;
		boolean bFind      = false;
		boolean bExists    = false;
		if(objValue==null || s_item ==null ) return objValue;
		s_item = s_item.trim();
		if(s_item.trim().equals("")) return objValue;

		class_name = objValue.getClass().getName();
		if(class_name.equals("java.lang.String")) return objValue;

		vObj    = null;
		iPos    = s_item.indexOf(".");
		if(iPos>-1){
			para_name = s_item.substring(0    , iPos);
			s_item    = s_item.substring(iPos + 1);
		}else{
			para_name = s_item;
			s_item    = "";
		}
		if(class_name.indexOf("HttpServletRequest")>-1){
			HttpServletRequest request = (HttpServletRequest)objValue;
			vObj   = request.getAttribute(para_name);
			if(vObj==null) vObj  = request.getParameter(para_name);
			if(s_item.equals("")) return vObj;
			bFind = true;
		}
		if(class_name.indexOf("PageContextImpl")>-1){
			PageContext pc = (PageContext)objValue;
			vObj   = pc.getRequest().getAttribute(para_name);
			if(vObj==null) vObj  = pc.getRequest().getParameter(para_name);
			if(s_item.equals("")) return vObj;
			bFind = true;
		}
		if(class_name.equals("com.sztheater.framework.util.ValueObject")){
			ValueObject valueObj = (ValueObject)objValue;
			if(para_name.equals("func_id")){
				return 	valueObj.getFuncID();
			}
			if(para_name.equals("action_id")){
				return 	valueObj.getActionID();
			}
			vObj  = null;
			if(para_name.equals("page")){
				vObj    = valueObj.getPage();
				bExists = true;
			}
			if(para_name.equals("dataset")){
				vObj  = valueObj.getResultSet();
				bExists = true;
			}
			if(para_name.equals("param")){
				vObj  = valueObj.getParam();
				bExists = true;
			}
			if(para_name.equals("user")){
				vObj  = valueObj.getUser();
				bExists = true;
			}
			if(para_name.equals("message")){
				vObj  = valueObj.getMessage();
				bExists = true;
			}
			if(para_name.equals("exception")){
				vObj  = valueObj.getException();
				bExists = true;
			}
			if(para_name.equals("trace")){
				vObj  = valueObj.getTrace();
				bExists = true;
			}
			bFind = true;
			if(s_item.equals("")) return vObj;
		}
		if(class_name.equals("java.util.ArrayList")){
			ArrayList aList = (ArrayList)objValue;
			iSize  = aList.size();
			iIndex = 0;
			try{
				iIndex = Integer.parseInt(para_name);
			}catch(Exception e){

			}
			if(iSize<1 || iIndex<0 || iIndex>=iSize) return null;
			vObj  = aList.get(iIndex);
			bFind = true;
			if(s_item.equals("")) return vObj;
		}
		if(class_name.equals("java.util.HashMap")){
			HashMap aHash = (HashMap)objValue;
			iSize  = aHash.size();
			if(iSize<1) return null;
			vObj  = aHash.get(para_name);
			bFind = true;
			if(s_item.equals("")) return vObj;
		}
		if(class_name.equals("java.util.Hashtable")){
			Hashtable bHash = (Hashtable)objValue;
			iSize  = bHash.size();
			if(iSize<1) return null;
			vObj  = bHash.get(para_name);
			bFind = true;
			if(s_item.equals("")) return vObj;
		}
		if(!bFind) return null;
		return getObject(vObj,s_item);
	}
	/**
	* 通过取得下拉框的HTML代码
	* @param aList      ArrayList   数据列表
	* @param value      String      当前下拉的值
	* @param EmptyValue String      为空的时候的值
	* @param f_value    String      真实值字段名
	* @param f_disp     String      显示值字段名
	* @param bMerge     boolean     合并标志
	*/
	public static String getComboboxHTML(ArrayList aList,String value,String EmptyValue,String f_value,String f_disp,boolean bMerge){
		//入参检验
		if(f_disp ==null || f_disp.trim().equals ("")) return "";
		if(f_value==null || f_value.trim().equals("")) return "";
		f_value = f_value.trim();
		f_disp  = f_disp.trim ();

		StringBuffer sbHTML = new StringBuffer("");
		String   strHTML  = "";
		int      iLoop    = 0 ;
		int      iLoopNum = 0;
		HashMap  aHash    = null;
		Object   obj      = null;
		if(EmptyValue!=null) sbHTML.append("<option value=''>"+EmptyValue+"</option>\n");
		if(aList!=null) iLoopNum = aList.size();
		String s_disp  = null;
		String s_value = null;
		for(iLoop=0;iLoop<iLoopNum;iLoop++){
			obj   = aList.get(iLoop);
			if(obj==null || !obj.getClass().getName().equals("java.util.HashMap")) continue;
			aHash   = (HashMap) obj;
			s_disp  = (String)aHash.get(f_disp);
			s_value = (String)aHash.get(f_value);
			if(s_value==null) continue;
			if(s_disp ==null) s_disp = "";
			sbHTML.append("<option value=\""+s_value+"\" ");
			Iterator it = aHash.keySet().iterator();
			while(it!=null && it.hasNext()){
				String keyObj  = (String)it.next();
				String valueObj= (String)aHash.get(keyObj);
				if(keyObj==null || valueObj==null || keyObj.equals("ROW_ID"))continue;
				if(keyObj.equals(f_disp) || keyObj.equals(f_value)) continue;
				sbHTML.append( keyObj +" = \"" + valueObj + "\"");
			}
			if(s_value.equals(value) || s_disp.equals(value)) sbHTML.append(" selected ");
			if(bMerge) s_disp = s_value+" "+s_disp;
			sbHTML.append(" >"+s_disp+"</option>\n");
		}
		strHTML = sbHTML.toString();
		sbHTML.delete(0,sbHTML.length());
		sbHTML = null;
		return strHTML;
	}
	/**
	* 通过服务来取得下拉列表的数据信息
	* @param pc         PageContext 标签基本属性
	* @param action     String      服务名称
	* @param servType   String      服务类型
	* @param formerPara String      前置参数
	*/
	public static ArrayList getStaticItems(PageContext pc,String func_id, String action,HashMap hashCond,boolean bTrace){
		if( func_id==null || func_id.trim().equals("")) return null;
		if( action ==null || action.trim().equals ("")) action = "select";
		int       iSuccFlag = 0;

		HttpSession  httpSession  = null;
		ValueObject  recvPack  = new ValueObject();
		ValueObject  sendPack  = new ValueObject();
		String    data_set   = "data_list";
		HashMap   hashUser   = null;
		Object    obj        = null;
		try{
			sendPack.setFuncID  (func_id  );
			sendPack.setActionID(action   );
			if(hashCond!=null && hashCond.size()>0){
				recvPack.putParam(hashCond);
			}
			//用户信息
			httpSession = pc.getSession();
			obj = httpSession.getAttribute("userinfo");
			if(obj!=null && obj.getClass().getName().equals("java.util.HashMap")) {
				hashUser = (HashMap)obj;
				sendPack.setUser(hashUser);
			}


			if(bTrace) recvPack.setTrace(true);
			//执行数据库中对应的SQL语句
//			iSuccFlag = SysCall.execute(null,sendPack,recvPack);

			if(iSuccFlag<0) {
				System.out.println(sendPack.getMessage());
				return null;
			}
			data_set = func_id.trim().toLowerCase();
			if( func_id.equals("DICT") || action.equals("psql")) data_set  = "data_list";
			return  recvPack.getDataSet(data_set);
		}catch(Exception e){
			System.out.println("取得静态字典异常:"+e.getMessage());
		}finally{
			sendPack.free();
			recvPack.free();
			sendPack = null;
			recvPack = null;
		}
		return null;
	}

	public static void getRequestParameters(PageContext pc,HashMap hashPara,
                                                String paraNames,String noUsedNames){
		if(hashPara==null || pc==null) return ;
		Enumeration keys   = null;

		keys = pc.getRequest().getParameterNames();
		String      paraName = null;
		String      paraValue= null;
		String      para_name = null;

		if(paraNames  ==null) paraNames   = "";
		if(noUsedNames==null) noUsedNames = "";
		paraNames   = paraNames.trim().toLowerCase();
		noUsedNames = noUsedNames.trim().toLowerCase();
		if(!paraNames.equals  ("")) paraNames   = ";" + paraNames   + ";";
		if(!noUsedNames.equals("")) noUsedNames = ";" + noUsedNames + ";";

		while(keys!=null && keys.hasMoreElements()){
			paraName = (String ) keys.nextElement();
			if(paraName==null) continue;
			paraValue= pc.getRequest().getParameter(paraName);
			if(paraValue==null) continue;
			if(paraName ==null || paraName.trim().equals("")) continue;
			if(paraValue==null || paraValue.trim().equals("")) continue;

			para_name = paraName.trim().toLowerCase();
			if(!paraNames.equals  ("") && paraNames.indexOf  (";"+para_name+";")< 0) continue;
			if(!noUsedNames.equals("") && noUsedNames.indexOf(";"+para_name+";")>-1) continue;
			if(hashPara==null) hashPara = new HashMap();
			hashPara.put(paraName,paraValue);

		}
	}


	public static boolean judgeNoEmpty(HashMap aHash,String sNoEmpty) {
		ArrayList aList = CommFunc.getListFromStr(sNoEmpty);
		if(aList==null ) return true;
		int iLoop   = 0;
		int iLoopNum=aList.size();
		boolean bExist = true;
		for(iLoop=0;iLoop<iLoopNum;iLoop++){
			String keyName = (String)aList.get(iLoop);
			if(keyName==null) continue;
			keyName = keyName.trim().toLowerCase();
			if(keyName.equals("")) continue;
			if(aHash==null || !aHash.containsKey(keyName)) {
				bExist = false;
				break;
			}
		}
		CommFunc.freeObj(aList);
		return bExist;
	}

	public static HashMap getValues(String str){
		if(str==null) return null;
		HashMap aHash = null;
		int       iPos1  = 0;
		int       iPos   = 0;
		String    f_name = null;
		String    f_value=null;
		str = "`" + str;
		while(!str.equals("")){
			iPos  = str.indexOf("`");
			if(iPos<0) {
				f_name = str;
				str    = "";
			}else{
				f_name = str.substring(0,iPos);
				str    = str.substring( iPos+1 );
			}
			iPos   = f_name.indexOf("=");
			if(iPos<0 || f_name.trim().equals("")) continue;

			f_value= f_name.substring(iPos+1);
			f_name = f_name.substring(0,iPos);
			f_name = f_name.trim().toLowerCase();
			if(aHash==null) aHash = new HashMap();
			aHash.put(f_name , f_value);
		}
		return aHash;
	}
}