BlogJava-Skynet-随笔分类-JspTag

分页乱码问题（解决）

G_G — Tue, 01 Apr 2008 08:13:00 GMT

上一个blog中粗略的使用了下分页标签使用 pg
使用问题还是有很多如分页中乱码、多java代码块
下面用一个来解决这些问题。

    <jsp:include page="../jspUtil/page.jsp">
        <jsp:param name="count" value="<%=OrderServiceImp.getOrdersCount(beginTime,endTime,userName,companyName,productName,null,zq)%>"  />
            <jsp:param name="maxPageItems" value="10" />

            <jsp:param name="goUrl" value="/zhongqi/seleProduct.do" />

        <jsp:param name="params" value="beginTime" />
        <jsp:param name="params" value="endTime" />
        <jsp:param name="params" value="userName" />
        <jsp:param name="params" value="companyName"/>
        <jsp:param name="params" value="productName" />

    jsp:include>

page.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="java.net.URLEncoder"%>
<%@page import="java.net.URLDecoder"%>
<%@ taglib prefix="pg" uri="/WEB-INF/pager-taglib.tld" %>

<%
    int count = Integer.parseInt( request.getParameter("count") );
    int maxPageItems = Integer.parseInt( request.getParameter("maxPageItems")==null?"10":request.getParameter("maxPageItems") );

    //参数设置 ="params" value="xx"  />
    String[] params = (String[])request.getParameterMap().get("params");

    String goUrl = request.getParameter("goUrl");

%>
<div id="bgee">
<div align="center">
<pg:pager
  id="pager"
  url="<%=goUrl%>"
  items='<%=count%>'
  maxPageItems="<%=maxPageItems %>"
  export="offset,currentPageNumber=pageNumber"
  isOffset="false"
  scope="request">

   <%
    for( String str : params ) {
        if (request.getParameter(str) != null && !request.getParameter(str).equals("")) {%>
                <pg:param name="<%=str %>" value='<%= URLEncoder.encode( URLDecoder.decode(request.getParameter(str),"utf-8"),"utf-8")%>'/>
        <% }
    }%>

<pg:index>
<pg:prev ifnull="true">
<span>
      <% if (pageUrl != null) { %>
        <A HREF="<%= pageUrl %>">< 上一页A>
      <% } %>
span>
pg:prev>

  <pg:pages export="pageUrl, pageNumber">
<% if (pageNumber == currentPageNumber) { %>
<span><%= pageNumber %>span>
<%} else {%>
<a href='<%=pageUrl%>'><%= pageNumber %>a>
<%}%>
pg:pages>
<pg:next ifnull="true">
<% if (pageUrl != null) { %>
  <a href='<%=pageUrl%>'>下一页 >>
<%}%>
pg:next>
pg:index>
pg:pager>
    div>
div>

G_G 2008-04-01 16:13 发表评论

分页查询+hbn

G_G — Sun, 09 Mar 2008 04:13:00 GMT

使用标签这是以 get 提交

<%@ taglib uri="http://jsptags.com/tags/navigation/pager" prefix="pg" %>

<div align="center" id="bgee">
    <pg:pager id="pager"
              url='bonusdetailaction.do'
              items='<%=max%>'
              maxPageItems='10'
                export="offset,currentPageNumber=pageNumber"
                isOffset="false"
                scope="request">
        <pg:index>
            <pg:prev> <a href="<%= response.encodeURL(pageUrl.replaceAll("&", "&")) %>&method=paginationEnquiries&rId=<%=request.getAttribute("rId") %>">[上一页]a>pg:prev>
            <pg:pages export="pageUrl, pageNumber">
                <%
                      if (pageNumber == currentPageNumber) {
                %>
                    <b><%= pageNumber %>b>
                <%
                      } else {
                %>
                    <a href="<%= response.encodeURL(pageUrl.replaceAll("&", "&")) %>&method=paginationEnquiries&rId=<%=request.getAttribute("rId") %>"><%= pageNumber %>a>
                <%
                      }
                   %>
          pg:pages>
             <pg:next><a href="<%= response.encodeURL(pageUrl.replaceAll("&", "&")) %>&method=paginationEnquiries&rId=<%=request.getAttribute("rId") %>">[下一页]a>pg:next>
        pg:index>
    pg:pager>
div>

action

int startNum = getParam(request, "pageroffset", 0);
int itms = getParam(request, "maxPageItems", 10);

dao

            Query qu = session.createQuery(hql).setLong("rid", rw.getId());
            qu.setFirstResult(start);
            qu.setMaxResults(itms );

G_G 2008-03-09 12:13 发表评论

分页标签使用 pg

G_G — Tue, 29 Jan 2008 07:57:00 GMT

使用：pager-taglib-2.0
官方：http://jsptags.com/tags/navigation/pager

使用页面：

<%@ taglib prefix="pg" uri="/WEB-INF/pager-taglib.tld" %>
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'pg.jsp' starting pagetitle>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">

<%!
private static final String getParam(ServletRequest request, String name,
    String defval)
{
    String param = request.getParameter(name);
    return (param != null ? param : defval);
}

private static final int getParam(ServletRequest request, String name,
    int defval)
{
    String param = request.getParameter(name);
    int value = defval;
    if (param != null) {
    try { value = Integer.parseInt(param); }
    catch (NumberFormatException ignore) { }
    }
    return value;
}
%><%
   String style = getParam(request,"style", "simple");
    String position = getParam(request, "position", "top");
    String index = getParam(request, "index", "center");
    int maxPageItems = getParam(request, "maxPageItems", 10);
    int maxIndexPages = getParam(request, "maxIndexPages", 10);

    List list = new ArrayList();
    for(int i=0;i<1000;i++){
        list.add(i);
    } %>
  head>

  <body>
<form action="<%= request.getRequestURI() %>" method="get">
<center>

<pg:pager
    items="<%= list.size() %>"
    index="<%= index %>"
    maxPageItems="<%= maxPageItems %>"
    maxIndexPages="<%= maxIndexPages %>"
    isOffset="<%= true %>"
    export="offset,currentPageNumber=pageNumber"
    scope="request">



    <pg:index>

      <jsp:include page="../jsp/texticon.jsp" flush="true"/>
    pg:index>

///////////////////////////////////////////////////////////////////////////////////////////////////////////////
  <hr>
  <table width="90%" cellspacing="4" cellpadding="4">

  <%for (int i = offset.intValue(),
             l = Math.min(i + maxPageItems, list.size());
         i < l; i++)
    {%>

    <pg:item>
                <tr>
                    <th>
                        <font color="<%= list.get(i) %>"><%= i + 1 %>font>
                    th>
                tr>
    pg:item>
    <%}%>
  table>
  <hr>

pg:pager>

  body>
html>

定义分页标签样式页：

<%@ page session="false" %>
<%@ taglib uri="http://jsptags.com/tags/navigation/pager" prefix="pg" %>
<jsp:useBean id="currentPageNumber" type="java.lang.Integer" scope="request"/>
<font face="fixed">
<pg:first export="firstPageUrl=pageUrl" unless="current">
  <a href="<%= firstPageUrl %>">|<a>
pg:first>
<pg:skip export="skipBackPageUrl=pageUrl" pages="<%= -10 %>">
  <a href="<%= skipBackPageUrl %>"><<<a>
pg:skip>
<pg:prev export="prevPageUrl=pageUrl">
  <a href="<%= prevPageUrl %>"><<a>
pg:prev>
<pg:pages><%
  if (pageNumber == currentPageNumber) {
    %> <b><%= pageNumber %>b> <%
  } else {
    %> <a href="<%= pageUrl %>"><%= pageNumber %>a> <%
  }
%>pg:pages>
<pg:next export="nextPageUrl=pageUrl">
  <a href="<%= nextPageUrl %>">>>a>
pg:next>
<pg:skip export="skipForwardPageUrl=pageUrl" pages="<%= 10 %>">
  <a href="<%= skipForwardPageUrl %>">>>>a>
pg:skip>
<pg:last export="lastPageUrl=pageUrl" unless="current">
  <a href="<%= lastPageUrl %>">>|a>
pg:last>
font>

G_G 2008-01-29 15:57 发表评论

EL 标签小例

G_G — Thu, 02 Aug 2007 02:13:00 GMT

问题： jsp 的简化与统一性
解决： EL 标签

jsp.页面

<%@ taglib prefix="fn" uri="/WEB-INF/fn.tld" %>
<%@ taglib prefix="c" uri="/WEB-INF/c-1_0-rt.tld" %>
<%@ taglib prefix="x" uri="/WEB-INF/x-1_0-rt.tld" %>
<%@ page isELIgnored="false" %>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'MyJsp.jsp' starting pagetitle>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">


  head>

  <body>
     <c:set var="url"><%=basePath%>/xmlc:set>
    <c:import var="xmlDoc" url="${url}"/>
    <x:parse xml="${xmlDoc}" var="doc" />                                     //xml解析
    <c:set var="bookName" ><x:out select="$doc/xml-body/books/book[@id='1']"/>c:set> //xml 定位
    ${fn:substring(bookName,"0", fn:length(bookName)-2 ) }
                          //字符substring

            //迭带




  body>
html>

结果得到是:   book1_goog
            book1_google
            book2_baidu
            book3_tiancai
/xml 路径是

package Servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class XmlServlet extends HttpServlet {
    /**
     *
     */
    private static final String CONTENT_TYPE = "text/html; charset=GBK";
    public void init() throws ServletException{}
    public void doGet(     HttpServletRequest request,
                        HttpServletResponse response )
                        throws ServletException,IOException{
        PrintWriter out = response.getWriter();

        response.setContentType(CONTENT_TYPE);
        response.setCharacterEncoding("GBK");


        out.print("");
        out.print("

");
                out.print("RW");
                out.print("123456");
                out.print("28");
                out.print("");
                        out.print("book1_google"); //jsp 定位得到的字符
                        out.print("book2_baidu");
                        out.print("book3_tiancai");
                        out.print("");
        out.print("");
    }
    public void doPost( HttpServletRequest request,
                        HttpServletResponse response )
                        throws ServletException,IOException{
        doGet(request,response);
    }
}

心得：写EL心情就是好

G_G 2007-08-02 10:13 发表评论

JSP 自定义标签笔记

G_G — Mon, 30 Jul 2007 03:52:00 GMT

JSP 自定义标签
1. pass 的建立是(1)tld文件加 (2).java加 private String pass gget() gset()
2. 要有 Body .java 就继承 BodyTagSupport 不要就 TagSupport
3. doStartTag() 中输出是 pageContext.getOut().print("hello."+this.pass);
4. doAfterBody() 中输出是 BodyContent bc = super.getBodyContent();
                            String bStr = bc.getString(); // body 中的 string
                              bc.getEnclosingWriter().print(...); // out to jsp
5.
             //会先运行得到 String 再在 bc.getString()得到 String
            XX


4. .java 中通过是 doStartTag()
                        return SKIP_BODY 跳向 doEndTag()
                      return EVAL_BODY_INCLUDE 跳过主体 doBodyContent()
                      return EVAL_BODY_BUFFERED 调用doInitBody()
5. .java 中 doAfterBody()
                      return SKIP_BODY 跳出循环到 doEndTag()
                      return EVAL_BODY_AGAIN 再次 doAfterBody()
6. .java 中 doEndTag()
                      retrun EVAL_PAGE 继续剩余
                      return SKIP_PAGE 跳出

Tag 自定义标签
1. <%@ taglib prefix="my" tagdir="/WEB-INF/tags" %> 倒入并在 tags 文件中建 XXX.tag
2. 使用 EG:
3. 在文件.tag中加入 <%@ attribute name="items"%>
                                 并在 body中${items}就可以使用
4. body加标签同 JSP 自定义标签 5
5.
        //添加body模块
            ..<>..


       在 .tag 中 <%@ attribute name="list" fragment="true" required="true" %> 取得
       使用中的 String

G_G 2007-07-30 11:52 发表评论

extremecomponents 初使用

G_G — Tue, 24 Apr 2007 07:51:00 GMT

摘要: 阅读全文

G_G 2007-04-24 15:51 发表评论