请参看tapestry的官方文档,这里只是总结性的备忘录。
http://tapestry.apache.org/ajax-and-zones.html
http://www.w3cschool.cc/jquery/jquery-dom-set.html
相关内容:
t:zone组件: 决定ajax请求完成后,更新的区域。
触发ajax请求的方式:
1) 通过组件的的事件函数,返回局部更新的内容。
定义t:zone组件,组件参数 id 和 t:id
在下面的4个组件的事件处理方法中,返回更新的内容。component中添加zone属性,指向定义的t:zone组件。
EventLink ActionLink Select Form
page.tml //------------------------ <t:actionlink t:id="someLink" zone="myzone">update</t:actionlink> <t:zone t:id="myZone" id="myzone"> The current time is ${currentTime} </t:zone> page.java //------------------------ Object onActionFromSomeLink() { return request.isXHR() ? myZone.getBody() : null; }
可以一次更新多个zone (区域的内容)
@InjectComponent private Zone userInput; @InjectComponent private Zone helpPanel; @Inject private AjaxResponseRenderer ajaxResponseRenderer; void onActionFromRegister() { ajaxResponseRenderer.addRender("userInput", userInput).addRender("helpPanel", helpPanel); }
2) 通过调用javascript (jquery)的ajax方式来进行调用。(和其他框架一样,内容以后补充)
通过动态创建EventLink, 通过jquery的ajax调用,实现局部刷新功能。
1)META-INF/modules/ajaxjson.js (一定要注意路径,当初放在了assets/modules下面了,找不到js文件)
define(['jquery'], function($) { return { update : function(url) { $('#update').click(function() { $.getJSON(url,function(result){ $("#address").text(result.address); $("#id").text(result.id); $("#name").text(result.name); }); }); } }; });
2)AjaxJson.java
public class AjaxJson { @Property @Persist private int count; @Property private int id; @Property private String name; @Property private String address; @Property private Date now; @Inject private ComponentResources resources; @Inject private JavaScriptSupport javaScriptSupport; void setupRender() { now = new Date(); id = 42; name = "xxxxx"; address = "yyyyy"; } @Inject private Logger log; @AfterRender void afterRender() { Link link = resources.createEventLink("AjaxJson"); javaScriptSupport.require("ajaxjson").invoke("update").with(link.toAbsoluteURI()); } JSONObject onAjaxJson() { count++; JSONObject myData = new JSONObject(); myData.put("id", 100); myData.put("name", "lichunhua" + count); myData.put("address", "dalian" + count); return myData; } }
3) AjaxJson.tml
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd" xmlns:p="tapestry:parameter"> <table> <tr> <td>id</td> <td id="id">${id}</td> </tr> <tr> <td>name</td> <td id="name">${name}</td> </tr> <tr> <td>address</td> <td id="address">${address}</td> </tr> </table> <hr /> ${now} <input type="button" id="update" value="AjaxJson" /> </html>
3) eventlink返回block,实现局部更新的ajax功能
3.1)AjaxBlock.tml
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd" xmlns:p="tapestry:parameter"> <t:Zone t:id="br" id="br" /> <t:block id="detail"> ajax appliction from return Block ${count} </t:block> <hr />${now} <t:EventLink event="Ajax" zone="br">AjaxReturnBlock</t:EventLink> </html>
public class AjaxBlock { @Inject private Block detail; @Property @Persist private int count; @Property private Date now; @Inject private ComponentResources componentResource; void setupRender() { now = new Date(); } Block onAjax() { count++; return detail; } }