JSP自定义分页标签 extends TagSupport

package com.util; import java.io.IOException; import java.util.Enumeration; import javax.servlet.http.HttpServletRequest; import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspWriter; import javax.servlet.jsp.tagext.TagSupport; /** * JSP自定义分页标签 * @author mushui.tu@kuwo.cn * */ public class PageTag extends TagSupport { private static final long serialVersionUID = 1L; private HttpServletRequest request; /** * 分页工具的样式，默认为Text */ private String style; /** * 当前页 */ private int currentpageInt = 1; /** * 每页记录数 */ private int pagesizeInt = 5; /** * 总记录数 */ private int rscountInt = 0; /** * 总页数 */ private int pagecountInt = 0; /** * 分页样式 */ public final String TEXT = "text"; public final String BBSTEXT = "bbstext"; public final String BBSIMAGE = "bbsimage"; /** * 分页工具条 * * @param fileName * String * @return String */ public String pagetool(String flag) { StringBuffer str = new StringBuffer(); String url = this.getParamUrl(); int ProPage = this.currentpageInt - 1; int Nextpage = this.currentpageInt + 1; if (flag.equals(TEXT)) { /** * 论坛形式的分页[直接以数字方式体现] */ str.append("<form method='post' name='pageform' action=''>"); str .append("<table width='100%' border='0' cellspacing='0' cellpadding='0'>"); str.append("<tr>"); str.append("<td width='3%'>&nbsp;</td>"); str.append("<td height='26'>"); str.append("记录" + this.rscountInt + "条&nbsp;&nbsp;"); str.append("共" + this.pagecountInt + "页&nbsp;&nbsp;"); str.append("每页" + this.pagesizeInt + "记录&nbsp;&nbsp;"); str.append("现在" + this.currentpageInt + "/" + this.pagecountInt + "页"); str.append("</td><td>"); // 设定是否有首页的链接 if (this.currentpageInt > 1) { str.append("<a href='" + url + "&currentpage=1'>首页</a>"); str.append("&nbsp;&nbsp;"); } // 设定是否有上一页的链接 if (this.currentpageInt > 1) { str.append("<a href='" + url + "&currentpage=" + ProPage + "'>上一页</a>"); str.append("&nbsp;&nbsp;&nbsp;"); } // 如果总页数只有10的话 if (this.pagecountInt <= 10) { for (int i = 1; i <= this.pagecountInt; i++) { if (this.currentpageInt == i) { str.append("<font color=red>[" + i + "]</font>&nbsp;&nbsp;"); } else { str.append("<a href='" + url + "&currentpage=" + i + "'>" + i + "</a>&nbsp;&nbsp;"); } } } 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.currentpageInt + 4; if (endPage > this.pagecountInt) { endPage = this.pagecountInt; } int startPage = 0; if (this.pagecountInt >= 8 && this.currentpageInt >= 8) { startPage = this.currentpageInt - 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.currentpageInt == i) { str.append("<font color=red>[" + i + "]</font>&nbsp;&nbsp;"); } else { str.append("<a href='" + url + "&currentpage=" + i + "'>" + i + "</a>&nbsp;&nbsp;"); } } } // 设定是否有下一页的链接 if (this.currentpageInt < this.pagecountInt) { str.append("<a href='" + url + "&currentpage=" + Nextpage + "'>下一页</a>"); str.append("&nbsp;&nbsp;"); } // 设定是否有尾页的链接 if (this.pagecountInt > 1 && this.currentpageInt != this.pagecountInt) { str.append("<a href='" + url + "&currentpage=" + pagecountInt + "'>尾页</a>"); str.append("&nbsp;&nbsp;"); } str.append("转到"); str .append("<select name='currentPage' onchange='javascript:ChangePage(this.value);'>"); for (int j = 1; j <= pagecountInt; j++) { str.append("<option value='" + j + "'"); if (currentpageInt == j) { str.append("selected"); } str.append(">"); str.append("" + j + ""); str.append("</option>"); } str.append("<select>页"); str.append("</td><td width='3%'>&nbsp;</td></tr></table>"); str.append("<script language='javascript'>"); str.append("function ChangePage(testpage){"); str.append("document.pageform.action='" + url + "&currentpage='+testpage+'';"); str.append("document.pageform.submit();"); str.append("}"); str.append("</script>"); str.append("</form>"); } else if (flag.equals(BBSTEXT)) { /** * 论坛形式的分页[直接以数字方式体现] */ str .append("<table width='100%' border='0' cellspacing='0' cellpadding='0'>"); str.append("<tr>"); str.append("<td width='3%'>&nbsp;</td>"); str.append("<td height='26'>"); str.append("记录" + this.rscountInt + "条&nbsp;&nbsp;"); str.append("共" + this.pagecountInt + "页&nbsp;&nbsp;"); str.append("每页" + this.pagesizeInt + "记录&nbsp;&nbsp;"); str.append("现在" + this.currentpageInt + "/" + this.pagecountInt + "页"); str.append("</td><td>"); // 设定是否有首页的链接 if (this.currentpageInt > 1) { str.append("<a href='" + url + "&currentpage=1'>首页</a>"); str.append("&nbsp;&nbsp;"); } // 设定是否有上一页的链接 if (this.currentpageInt > 1) { str.append("<a href='" + url + "&currentpage=" + ProPage + "'>上一页</a>"); str.append("&nbsp;&nbsp;&nbsp;"); } // 如果总页数只有10的话 if (this.pagecountInt <= 10) { for (int i = 1; i <= this.pagecountInt; i++) { if (this.currentpageInt == i) { str.append("<font color=red>[" + i + "]</font>&nbsp;&nbsp;"); } else { str.append("<a href='" + url + "&currentpage=" + i + "'>" + i + "</a>&nbsp;&nbsp;"); } } } 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.currentpageInt + 4; if (endPage > this.pagecountInt) { endPage = this.pagecountInt; } int startPage = 0; if (this.pagecountInt >= 8 && this.currentpageInt >= 8) { startPage = this.currentpageInt - 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.currentpageInt == i) { str.append("<font color=red>[" + i + "]</font>&nbsp;&nbsp;"); } else { str.append("<a href='" + url + "&currentpage=" + i + "'>" + i + "</a>&nbsp;&nbsp;"); } } } // 设定是否有下一页的链接 if (this.currentpageInt < this.pagecountInt) { str.append("<a href='" + url + "&currentpage=" + Nextpage + "'>下一页</a>"); str.append("&nbsp;&nbsp;"); } // 设定是否有尾页的链接 if (this.pagecountInt > 1 && this.currentpageInt != this.pagecountInt) { str.append("<a href='" + url + "&currentpage=" + pagecountInt + "'>尾页</a>"); str.append("&nbsp;&nbsp;"); } str.append("</td><td width='3%'>&nbsp;</td></tr></table>"); } else if (flag.equals(this.BBSIMAGE)) { /** * 论坛形式的分页[以图片的方式体现] */ // 设定分页显示的CSS str.append("<style>"); 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