简体繁体 English

Java Web应用程序中的Ajax和复杂的图形

[英]Ajax and sophisticated graphics in Java web-app

原文 2010-04-18 06:16:30 4 2 java/ web-applications/ jsf/ spring-mvc

In my opinion WWW will sooner or later come to full-blown AJAX web-sites, so that we wouldn't have page reloads every time you click somewhere. 在我看来，WWW迟早会进入成熟的AJAX网站，这样，每次单击某个位置时，我们就不会重新加载页面。

Now I want you to ask this. 现在我要你问这个。

What tools and frameworks can one use to make a Java Web-application running on Tomcat 可以使用哪些工具和框架来使Java Web应用程序在Tomcat上运行

have AJAX functionality like "in-place, with no page reloading" table sorting by 具有AJAX功能，例如“就地，无需重新加载页面”

clicking on its column header, multi-tabs that enable opening at once the new screen to the user without reloading a page, saving data in the database without reloading a page, and other similar things that we do not usually see on web pages. 单击其列标题，多个选项卡，这些选项卡可立即向用户打开新屏幕，而无需重新加载页面，无需重新加载页面即可将数据保存在数据库中，以及其他通常在网页上看不到的类似内容。

That's all should probably be based on AJAX. 这一切都应该基于AJAX。

But how to integrate this AJAX functionality with existing java web-frameworks, let's say Spring MVC? 但是如何将这种AJAX功能与现有的Java Web框架集成在一起，比如说Spring MVC？

Or maybe there are other frameworks that better suit such needs but that can be integrated with core Spring? 也许还有其他框架可以更好地满足此类需求，但可以与Spring核心集成？

2 个解决方案

Your question is rather confusing--AJAX calls are all client-side, any server-side technology can return data to the client. 您的问题相当令人困惑-AJAX调用都是客户端，任何服务器端技术都可以将数据返回给客户端。

That being said, you may try taking a look at Google Web Toolkit . 话虽如此，您可以尝试看看Google Web Toolkit 。

With the GWT SDK, you write your AJAX front-end in the Java programming language which GWT then cross-compiles into optimized JavaScript that automatically works across all major browsers. 使用GWT SDK，您可以使用Java编程语言编写AJAX前端，然后GWT将其交叉编译为可在所有主要浏览器上自动运行的优化JavaScript。 During development, you can iterate quickly in the same "edit - refresh - view" cycle you're accustomed to with JavaScript, with the added benefit of being able to debug and step through your Java code line by line. 在开发过程中，您可以按照您习惯使用JavaScript的相同“编辑-刷新-视图”循环快速进行迭代，其附加好处是能够逐行调试和逐步执行Java代码。 When you're ready to deploy, the GWT compiler compiles your Java source code into optimized, standalone JavaScript files. 准备部署时，GWT编译器会将Java源代码编译为优化的独立JavaScript文件。

Among other things, GWT supports built-in serialization of objects for transfer to your Java servlets, allowing for crazy-easy (the technical term) integration of your GWT client and existing Java technologies. 除其他外，GWT支持对象的内置序列化以传输到Java servlet，从而允许您将GWT客户端和现有Java技术轻松地（技术术语）集成。

Homebrewed/3rd-party Ajax stuff with JSF isn't that easy since you have to take its lifecycle and component tree into account. 使用JSF进行自制/第三方Ajax的东西并不是那么容易，因为您必须考虑其生命周期和组件树。 You would need to write your own ViewHandler . 您将需要编写自己的ViewHandler 。 Rather look for what's already available. 而是寻找已经可用的东西。 To start, JSF2 already provides builtin Ajax functionality with under each <f:ajax> . 首先，JSF2已经在每个<f:ajax>下提供了内置的Ajax功能。 There are further also a lot of Ajaxical JSF component libraries, like RichFaces ( showcase here ). 还有许多Ajaxical JSF组件库，例如RichFaces （在此处展示）。