Mybook. jsp
The original session. currentPage can be implemented in jsp mode or in the event message HttpSessionListener.
<% @ Page Language = "Java" contenttype = "text/html; charset = UTF-8 "<br/> pageencoding =" UTF-8 "%> <br/> <% @ taglib uri ="/WEB-INF/why. TLD "prefix =" myexample "%> <br/> <! Doctype HTML public "-// W3C // dtd html 4.01 transitional // en" "http://www.w3.org/TR/html4/loose.dtd"> <br/> <HTML> <br/> <pead> <br/> <MCE: script Type = "text/JavaScript" src = "http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" mce_src = "http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"> </MCE: SCRIPT> <br/> <MCE: script Type = "text/JavaScript" src = "http: // localhost/show/JS/you. JS" Mce_src = "http: // localhost/show/JS/you. JS "> </MCE: SCRIPT> <br/> <LINK rel =" stylesheet "<br/> href =" http: // localhost/show/CSS/you.css "mce_href =" http: // localhost/show/CSS/you.css "<br/> type =" text/CSS "/> <br/> <meta http-equiv =" Content-Type "content = "text/html; charset = UTF-8 "> <br/> <title> insert title here </title> <br/> </pead> <br/> <body> <br/> <myexample: to here = "Do I"/> <br/> <Div class = "change"> <br /> <Myexample: Query table = "book" page = "$ {sessionscope. currentpage = NULL? 1: sessionscope. currentpage} "/> <br/> </div> <br/> </body> <br/> </ptml>
You. js
$ (Document ). ready (function () {<br/> $ ("span. click "). click (function () {<br/> var XMLHTTP; <br/> If (window. XMLHttpRequest) <br/>{// code for IE7 +, Firefox, chrome, opera, Safari <br/> XMLHTTP = new XMLHttpRequest (); <br/>}< br/> else <br/> {// code for IE6, ie5 <br/> XMLHTTP = new activexobject ("Microsoft. XMLHTTP "); <br/>}< br/> XMLHTTP. onreadystatechange = function () <br/>{< br/> If (XMLHTTP. readysta Te = 4 & XMLHTTP. status = 200) <br/>{< br/> location. reload (); <br/>}< br/>}; <br/> XMLHTTP. open ("get ",". /change? Page = "commandid (this).html (), true); <br/> XMLHTTP. send (); </P> <p >}); <br/>
Implemented Using custom tags,
Tag
Package my; <br/> import java. io. IOException; <br/> import java. SQL. *; <br/> import javax. servlet. jsp. tagext. *; <br/> public class Query extends SimpleTagSupport {<br/> private Statement statement; <br/> private String table = null; <br/> private int page, number = 2; <br/> private ResultSet resultSet; <br/> private String follow = ""; <br/> public void doTag () {<br/> String querySql = "SELECT name, price FROM" + tabl E; <br/> try {<br/> statement = MySql. getStatement ("why", "root", "root"); <br/> resultSet=statement.exe cuteQuery (querySql); <br/> this. getJspContext (). getOut (). println ("<br/>" + "<br/>" + getResult (); <br/>} catch (Exception e) {<br/> // TODO Auto-generated catch block <br/> e. printStackTrace (); <br/>}< br/> private String getResult () throws Exception {<br/> int totalRow, totalPage; <br/> String s Tr = null; <br/> if (page-1) = 0 | resultSet. absolute (page-1) * number) & resultSet. last () {<br/> totalRow = resultSet. getRow (); <br/> totalPage = totalRow/number + (totalRow % number = 0? 0: 1); <br/> if (page-1> 0) <br/> resultSet. absolute (page-1) * number); <br/> else <br/> resultSet. beforeFirst (); <br/>}else {<br/> follow + = "null"; <br/> return null; <br/>}</p> <p> for (int I = 0; I <number & resultSet. next (); ++ I) {<br/> str + = "<div class =/" red/">" + resultSet. getString ("name") + "<br/>" + resultSet. getDouble ("price") + "</div> <br/>"; <br/> follow + = resultSet. getString ("name") + resultSet. getDouble ("price"); <br/>}< br/> for (int I = 1; I <= totalPage; ++ I) {<br/> if (I = page) {<br/> str + = "<span style ="/"mce_style ="/"" color: red/">" + I + "</span>"; <br/> continue; <br/>}< br/> str + = "<span class =/" click/">" + I + "</span> "; <br/>}< br/> return str; <br/>}< br/> public void setTable (String table) {<br/> this. table = table; <br/>}< br/> public void setPage (int page) {<br/> this. page = page; <br/>}< br/> public void setNumber (int number) {<br/> this. number = number; <br/>}< br/>}
Why. tld
<? XML version = "1.0" encoding = "UTF-8"?> <Br/> <taglib xmlns = "http://java.sun.com/xml/ns/j2ee" <br/> xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" <br/> xsi: schemalocation = "http://java.sun.com/xml/ns/j2ee <br/> http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd" <br/> Version = "2.0"> </P> <p> <tlib-version> 1.0 </tlib-version> <br/> <short-Name> Why </short-Name> <! -- My. example declaration name example --> <br/> <tag> <br/> <Name> to </Name> <br/> <tag-class> my. example </Tag-class> <br/> <body-content> Empty </body-content> <br/> <attribute> <br/> <Name> here </ name> <br/> </attribute> <br/> </Tag> <br/> <tag> <br/> <Name> query </Name> <br/> <tag-class> my. query </Tag-class> <br/> <body-content> Empty </body-content> <br/> <attribute> <br/> <Name> table </ name> <br/> <required> true </required> <br/> </attribute> <br/> <Name> page </Name> <br/> <required> true </required> <br/> <rtexprvalue> true </rtexprvalue> <br/> </attribute> <br/> <attribute> <br/> <name> Number </Name> <br/> </attribute> <br/> </Tag> </P> <p> </taglib>
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