java分页工具源码.doc

package mon.util.web;import java.io.IOException;import java.util.Enumeration;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.jsp.JspException;import javax.servlet.jsp.JspWriter;import javax.servlet.jsp.PageContext;import javax.servlet.jsp.tagext.TagSupport;public class PageUtilTag extends TagSupport private int rscount = 0; / 一共有多少行private int pagesize = 20; / 每页有多少行默认为20行private int type = 1;/ 默认值为1private String url = ;/* * 下面这些参数不需要页面传递 */private int pageCount = 0;private int currentPage = 1;private HttpServletRequest request;public String getUrl() return url;public void setUrl(String url) this.url = url;public int getType() return type;public void setType(int type) this.type = type;public int getRscount() return rscount;public void setRscount(int rscount) this.rscount = rscount;public int getPagesize() return pagesize;public void setPagesize(int pagesize) this.pagesize = pagesize;Overridepublic int doEndTag() throws JspException PageContext pageContext = this.pageContext;HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();this.request = request;HttpServletResponse response = (HttpServletResponse) pageContext.getResponse();JspWriter out = pageContext.getOut();/ 获取总记录数int rsCount = this.getRscount();/ 获取每页显示多少条int pageSize = this.getPagesize();/ 获取总记录数int pageCount = this.getpageCount();/ 获取当前页int currentPage = this.getcurrentPage(request);/ 创建工具条String pageTool = this.createPageTool(this.type);try out.println(pageTool); catch (IOException e) e.printStackTrace();return super.doEndTag();/* * 获取总页数 * * return int */private int getpageCount() try this.pageCount = (this.rscount - 1) / this.pagesize) + 1; catch (Exception ex) ex.printStackTrace();this.pageCount = 0;return this.pageCount;/* * 获取当前页码的设置 * * return int */private int getcurrentPage(HttpServletRequest request) try if (request.getParameter(currentPage) != null& Integer.parseInt(request.getParameter(currentPage) 1) this.currentPage = Integer.parseInt(request.getParameter(currentPage); else this.currentPage = 1; catch (Exception ex) ex.printStackTrace();this.currentPage = 1;return this.currentPage;/* * 分页工具条 * * param fileName * String * return String */private String createPageTool(int type) StringBuffer str = new StringBuffer();String temp = ;String url = this.getParamUrl();int ProPage = this.currentPage - 1;int Nextpage = this.currentPage + 1;/ 文字的分页if (type = 1) str.append();str.append();str.append();str.append( );str.append();str.append(共有记录 + this.rscount + 条   );str.append(共 + this.pageCount + 页   );str.append(每页 + this.pagesize + 记录   );str.append(现在 + this.currentPage + / + this.pageCount + 页);str.append();if (this.currentPage 1) str.append(首页);str.append(   );str.append(上一页);str.append(   ); else str.append(首页);str.append(   );str.append(上一页);str.append(   );if (this.currentPage this.pageCount) str.append(下一页);str.append(   ); else str.append(下一页);str.append(   );if (this.pageCount 1 & this.currentPage != this.pageCount) str.append(尾页);str.append(   ); else str.append(尾页);str.append(   );str.append(转到);str.append();for (int j = 1; j = pageCount; j+) str.append();str.append( + j + );str.append();str.append(页);str.append( );str.append();str.append(function ChangePage(testpage);str.append(document.pageform.action= + url+ ¤tPage=+testpage+;);str.append(document.pageform.submit(););str.append();str.append();str.append(); else if (type = 2) /* * 论坛形式的分页直接以数字方式体现 */str.append();str.append();str.append( );str.append();str.append(记录 + this.rscount + 条  );str.append(共 + this.pageCount + 页  );str.append(每页 + this.pagesize + 记录  );str.append(现在 + this.currentPage + / + this.pageCount + 页);str.append();/ 设定是否有首页的链接if (this.currentPage 1) str.append(首页);str.append(  );/ 设定是否有上一页的链接if (this.currentPage 1) str.append(上一页);str.append(   );/ 如果总页数只有10的话if (this.pageCount = 10) for (int i = 1; i = this.pageCount; i+) if (this.currentPage = i) str.append( + i+   ); else str.append( + i +   ); else / 说明总数有超过10页/ 制定特环的开始页和结束页int endPage = this.currentPage + 4;if (endPage this.pageCount) endPage = this.pageCount;int startPage = 0;if (this.pageCount = 8 & this.currentPage = 8) startPage = this.currentPage - 5; else / 表示从第一页开始算startPage = 1;System.out.println(startPage);System.out.println(endPage);for (int i = startPage; i = endPage; i+) if (this.currentPage = i) str.append( + i+   ); else str.append( + i +   );/ 设定是否有下一页的链接if (this.currentPage this.pageCount) str.append(下一页);str.append(  );/ 设定是否有尾页的链接if (this.pageCount 1 & this.currentPage != this.pageCount) str.append(尾页);str.append(  );str.append( ); else if (type = 3) /* * 论坛形式的分页以图片的方式体现 */ 设定分页显示的CSSstr.append();str.append(BODY FONT-SIZE: 12px;FONT-FAMILY:宋体;WIDTH: 60%; PADDING-LEFT: 25px;);str.append(DIV.meneame PADDING-RIGHT: 3px; PADDING-LEFT: 3px; FONT-SIZE: 80%; PADDING-BOTTOM: 3px; MARGIN: 3px; COLOR: #ff6500; PADDING-TOP: 3px; TEXT-ALIGN: center);str.append(DIV.meneame A BORDER-RIGHT: #ff9600 1px solid; PADDING-RIGHT: 7px; BACKGROUND-POSITION: 50% bottom; BORDER-TOP: #ff9600 1px solid; PADDING-LEFT: 7px; BACKGROUND-IMAGE: url(+ this.request.getContextPath()+ /meneame.jpg); PADDING-BOTTOM: 5px; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ff9600 1px solid; TEXT-DECORATION: none);str.append(DIV.meneame A:hover BORDER-RIGHT: #ff9600 1px solid; BORDER-TOP: #ff9600 1px solid; BACKGROUND-IMAGE: none; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; BORDER-BOTTOM: #ff9600 1px solid; BACKGROUND-COLOR: #ffc794);str.append(DIV.meneame SPAN.current BORDER-RIGHT: #ff6500 1px solid; PADDING-RIGHT: 7px; BORDER-TOP: #ff6500 1px solid; PADDING-LEFT: 7px; FONT-WEIGHT: bold; PADDING-BOTTOM: 5px; BORDER-LEFT: #ff6500 1px solid; COLOR: #ff6500; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ff6500 1px solid; BACKGROUND-COLOR: #ffbe94);str.append(DIV.meneame SPAN.disabled BORDER-RIGHT: #ffe3c6 1px solid; PADDING-RIGHT: 7px; BORDER-TOP: #ffe3c6 1px solid; PADDING-LEFT: 7px; PADDING-BOTTOM: 5px; BORDER-LEFT: #ffe3c6 1px solid; COLOR: #ffe3c6; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ffe3c6 1px solid);str.append();str.append();/ 判定是否有上一页if (this.currentPage 1) str.append(首页);str.append(   );str.append(上一页);str.append(   ); else str.append(首页);str.append(  );str.append(上一页);str.append(  );/ 显示中间的图片if (this.pageCount = 10) for (int i = 1; i = this.pageCount; i+) if (this.currentPage = i) str.append( + i + ); else str.append( + i+   ); else / 说明总数有超过10页/ 制定特环的开始页和结束页int endPage = this.currentPage + 4;if (endPage this.pageCount) endPage = this.pageCount;int startPage = 0;if (this.pageCount = 8 & this.currentPage = 8) startPage = this.currentPage - 5; else / 表示从第一页开始算startPage = 1;System.out.println(startPage);System.out.println(endPage);for (int i = startPage; i = endPage; i+) if (this.currentPage = i) str.append( + i + ); else str.append( + i+   );/ 判断下一页和尾页if (this.currentPage this.pageCount) if (this.currentPage this.pageCount - 10) str.append(.);str.append(+ (this.pageCount - 1) +   );str.append(+ this.pageCount +   );str.append(下一页);str.append(  ); else str.append(下一页);str.append(  );if (this.pageCount 1 & this.currentPage != this.pageCount) str.append(尾页);str.append(  ); else str.append(尾页);str.append(  );str.append();return str.toString();public String getParamUrl() String url = ;url = this.request.getContextPath() + / + this.getUrl();if (url.indexOf(?) = -1) url = url + ?;String totalParams = ;Enumeration params = this.request.getParameterNames();/ 得到所有参数名while (params.hasMoreElements() String tempName = params.nextElement().toString();String tempValue = this.request.getParameter(tempName);if (tempValue != null & !tempValue.equals()& !tempName.equals(currentPage) if (totalParams.equals() totalParams = totalParams + tempName + = + tempValue; else totalParams = totalParams + & + tempName + =+ tempValue;String totalUrl = url + totalParams;return totalUrl;public static void main(String args) / 调用方式/ Servlet中/ 定义每页显示多少条/ int pageSize = 13;/ 获取总记录数/ String sql = Select count(itemid) from t_iteminfo;/ int rsCount = ConnOracle.getCount(sql);/ request.setAttribute(rsCount, rsCount);/ int current