pages.java

java开发的经典框架assh,做的一个系统！

package com.caolulu.assh.comm;

import java.util.Locale;
import org.apache.commons.lang.builder.ToStringBuilder;


public class Pages {

  String filename = ""; //文件吿
  int page = 1; //页号
  long totals = -1; //记录总数
  int perpagenum = 20; //每页显示记录敿
  int style = 0; //分页字串样式
  int allpage = 1; //总页敿
  int cpage = 1; //当前顿
  int spage = 1; //弿始记录数
  String listPageBreak = "";
  String[] pagesign = null;
  Locale locale = Locale.getDefault();

  public Pages() {
    this.pagesign = this.getPagesign();
  }

  public Pages(Locale locale) {
    this.locale = locale;
    this.pagesign = this.getPagesign();
  }

  public String getFileName() {
    return this.filename;
  }

  public void setFileName(String aFileName) {
    this.filename = aFileName;
  }

  public int getPage() {
    return this.page;
  }

  public void setPage(int aPage) {
    if (aPage < 1) {
      this.page = 1;
    }
    this.page = aPage;
  }

  public long getTotals() {
    return this.totals;
  }

  public void setTotals(long aTotals) {
    this.totals = aTotals;
  }

  public int getPerPageNum() {
    return this.perpagenum;
  }

  public void setPerPageNum(int aperpagenum) {
    this.perpagenum = aperpagenum;
  }

  public int getStyle() {
    return this.style;
  }

  public void setStyle(int aStyle) {
    this.style = aStyle;
  }

  public void setPagesign(String[] apagesign) {
    this.pagesign = apagesign;
  }

  public int getSpage() {
    return this.spage;
  }

  public void doPageBreak() {
    this.allpage = (int) Math.ceil( (this.totals + this.perpagenum - 1) /
                                   this.perpagenum);
    int intPage = this.page;
    if (intPage > this.allpage) { // pages == 0
      this.cpage = 1;
    }
    else {
      this.cpage = intPage;
    }
    this.spage = (this.cpage - 1) * this.perpagenum;
    getPageBreakStr();
  }

  public String getListPageBreak() {
    return this.listPageBreak;
  }

  private void getPageBreakStr() {
    //System.out.println(filename + " " + filename.endsWith(Constant.FILEPREFIX));
    if (this.filename.indexOf("?") == -1 &&
        (this.filename.endsWith(".do"))) {
      //System.out.println("---------");
      this.filename = this.filename + "?";
    }
    else {
      if (!this.filename.endsWith("&")) {
        this.filename = this.filename + "&";
      }
    }

    StringBuffer sb = new StringBuffer();

    
    //------------------6
    if (this.style == 6) {
        //丿行显示页敿
        int pagesep = 5;
        //总行敿
        int allpagesep = (int) Math.ceil( (allpage + pagesep - 1) / pagesep);
        //当前行数
        int cpagesep = (int) Math.ceil( (cpage + pagesep - 1) / pagesep);
        //当前丿行显示页敿
        int cnum;
        if (allpage > 0) {
          //在页丿
          if (cpagesep != allpagesep) {
            cnum = pagesep;
          }
          //页末
          else {
            cnum = allpage % pagesep;
            //正好整除
            if (cnum == 0) {
              cnum = pagesep;
            }
          }
        }
        else {
          cnum = 0;
        }
        System.out.println("cpage:" + cpage + " cpagesep:" + cpagesep + " allpagesep:" + allpagesep);
        /**
         * previous butten ,append to
         * <a href='xxx.lt?page=x&t=x'><img></a>
         */

        sb.append("<a href='");
        sb.append("javascript:loadMessagesList(");
        //徿前一衿
        int previous;
        if (cpage <= 1) {
          previous = 1;
        }
        else {
          previous = cpage - 1;
        }
        sb.append(previous);

        sb.append(");'>");
        sb.append(Constant.MESSAGE.getMessage(this.locale,
                                              "comm.pages.previous"));
        sb.append("</a>");
        /**
         * middle butten ,append to
         * <a href='xxx.lt?page=x&t=x'><img></a>
         */
        for (int i = 0; i < cnum; i++) {
          sb.append(" <span class='kk2'><a href='");
          sb.append("javascript:loadMessagesList(");
          sb.append( ( (i + 1) + ( (cpagesep - 1) * pagesep)));

          sb.append(");'>");
          if (cpage == (i + 1) + ( (cpagesep - 1) * pagesep)) {
            sb.append("<font color='red'>" + ( (i + 1) + ( (cpagesep - 1) * pagesep)) + "</font>");
          }
          else {
            sb.append( ( (i + 1) + ( (cpagesep - 1) * pagesep)));
          }
          sb.append("</a></span>");
        }
        /**
         * next butten ,append to
         * <a href='xxx.lt?page=x&t=x'><img></a>
         */
        sb.append(" <a href='");
        sb.append("javascript:loadMessagesList(");
        int next;
        if (cpage >= allpage) {
          next = (int) allpage;
        }
        else {
          next = cpage + 1;
        }
        sb.append(next);

        sb.append(");'>");
        sb.append(Constant.MESSAGE.getMessage(this.locale,
                                              "comm.pages.next"));
        sb.append("</a> ");

        int _cpage = 0;
        if (this.allpage == 0) {
          _cpage = 0;
        }
        else {
          _cpage = cpage;
        }
        this.listPageBreak = sb.toString();
        return;
      }
    
    
    
    //-------------------6

  }

  public String[] getPagesign() {
    String[] pagessign = {
        Constant.MESSAGE.getMessage(this.locale, "comm.pages.first"),
        Constant.MESSAGE.getMessage(this.locale, "comm.pages.previous"),
        Constant.MESSAGE.getMessage(this.locale, "comm.pages.next"),
        Constant.MESSAGE.getMessage(this.locale, "comm.pages.end")};
    return pagessign;
  }

  public static void main(String args[]) {
    int allpagesep = (int) 1 % 2;

    int cpage = 1;
    int pagesep = 2;
    System.out.println(Math.ceil( (1 + 5 - 1) / 5));
  }

/**
 * @see java.lang.Object#toString()
 */
public String toString() {
	return new ToStringBuilder(this).append("pagesign", this.pagesign)
			.append("page", this.page).append("listPageBreak",
					this.listPageBreak).append("perPageNum",
					this.getPerPageNum()).append("spage", this.spage)
			.append("totals", this.totals).append("fileName",
					this.getFileName()).append("style", this.style)
			.toString();
}
  
  

}