jsputil.java

JAVA E拍网上购物业务管理 使用CRM业务流程

package org.ch02zf.comm;

/*
 * 拼写Jsp页面中字符串的工具类
 * 每个字符串在内存中只有一个实例，请求时直接返回

*/
import java.util.ArrayList;
import java.util.List;

import javax.servlet.jsp.jstl.sql.Result;

import org.ch02zf.dao.JDDao;
import org.ch02zf.dao.QXDao;
import org.ch02zf.dao.daoImpl.FWLXDaoImpl;
import org.ch02zf.dao.daoImpl.JDDaoImpl;
import org.ch02zf.dao.daoImpl.QXDaoImpl;
import org.ch02zf.entity.FWLX;





public class JspUtil {

    private static StringBuffer arrayStr = null;

    private static StringBuffer qxOptionsStr = null;

    private static StringBuffer fwlxOptionsStr = null;

    /**
     * 街道信息的两个二维数组字符串，放置于javascript中，为空时到新建一个实例，有内容时直接返回
     * 
     * @return 返回二级select使用的数组，字符串形式
     */
    public static StringBuffer getArrayStr() {// synchronized
        if (arrayStr == null) {
            arrayStr = new StringBuffer();
            QXDao qxProcess = new QXDaoImpl();
            JDDao jdProcess = new JDDaoImpl();

            List jdNum = new ArrayList();
            jdNum = jdProcess.getJDNums();
            
            Result qxResult = qxProcess.getQX();
            Result jdResult = jdProcess.getJD();
            
            int qxLength = qxResult.getRowCount();
            // int jdLength = jdList.size();
            // int jdNumLength = jdNum.size();
            int pointer = 0;// 指示
            arrayStr.append("var v = new Array(" + qxLength + ");\n");// option的value
            arrayStr.append("var n = new Array(" + qxLength + ");\n");// option的显示值

            for (int i = 0; i < qxLength; i++) {
                //int qxid = ((QX) qxList.get(i)).getQxid();
                int qxid = (Integer)qxResult.getRows()[i].get("qxid");
                arrayStr.append("v[" + qxid + "] = new Array(");
                int l = 0;
                try {
                    l = ((Integer) jdNum.get(i)).intValue();
                } catch (Exception e) {
                    // e.printStackTrace();
                    System.out.println("========无此区县("
                            + (String)qxResult.getRows()[i].get("qx") + ")的街道资料========");
                }
                for (int j = 0; j < l; j++) {
                   // int value = ((JD) jdList.get(pointer + j)).getJdid();
                    int value = (Integer)jdResult.getRows()[pointer + j].get("jdid");
                    arrayStr.append("'" + value + "'");
                    if (j != l - 1) {
                        arrayStr.append(",");
                    }
                }
                arrayStr.append(");\n");
                arrayStr.append("n[" + qxid + "] = new Array(");
                for (int j = 0; j < l; j++) {
                  //  String name = ((JD) jdList.get(pointer + j)).getJd();
                    String name = (String)jdResult.getRows()[pointer + j].get("jd");
                    arrayStr.append("'" + name + "'");
                    if (j != l - 1) {
                        arrayStr.append(",");
                    }
                }
                arrayStr.append(");\n");

                pointer += l;
            }
        }
        return arrayStr;
    }

    /**
     * 区县下拉框选项的字符串，为空时到新建一个实例，有内容时直接返回
     * 
     * @return 得到区县的option，字符串形式
     */
    public static StringBuffer getQxOptions() {
        if (qxOptionsStr == null) {
            qxOptionsStr = new StringBuffer();
            
            QXDao qxProcess = new QXDaoImpl();
            //ArrayList qxList = qxProcess.getQXList();
            Result qxResult = qxProcess.getQX();
            for (int i = 1; i <= qxResult.getRowCount(); i++) {

                qxOptionsStr.append("<option value='"
                        + (Integer)qxResult.getRows()[i-1].get("qxid") + "'>"
                        + (String)qxResult.getRows()[i-1].get("qx") + "</option>\n");

            }
        }
        return qxOptionsStr;
    }

    /**
     * 房屋类型下拉框选项的字符串，为空时到新建一个实例，有内容时直接返回
     * 
     * @return 得到房屋类型的option，字符串形式
     */
   
    public static StringBuffer getFwlxOptions() {
        if (fwlxOptionsStr == null) {
            fwlxOptionsStr = new StringBuffer();
            FWLXDaoImpl fwlxProcess = new FWLXDaoImpl();

            Result fwlxResult = fwlxProcess.getFxlx();
            for (int i = 1; i <= fwlxResult.getRowCount(); i++) {

                fwlxOptionsStr.append("<option value='"
                        + (Integer)fwlxResult.getRows()[i-1].get("fwid") + "'>"
                        + (String)fwlxResult.getRows()[i-1].get("fwlx")
                        + "</option>\n");

            }
        }
        return fwlxOptionsStr;
    }
    /**
     * 将长度超过35个字的房屋信息分成多行
     * @param fwxx
     * @return
     */
    public static StringBuffer getFwxxStr(String fwxx){
        StringBuffer fwxxRes = new StringBuffer();
        if(fwxx.length()>35){
            int rows = fwxx.length()/35 + 1;
            for(int i=0;i<rows-1;i++){
                fwxxRes.append(fwxx.subSequence(35*i,35*(i+1))+"<br/>");
                
            }
            fwxxRes.append(fwxx.subSequence(35*(rows-1), fwxx.length()-1));
        } else {
            fwxxRes.append(fwxx);
        }

        return fwxxRes;
    }

}