【作者】 段英杰；

【导师】 张耀民；

【作者基本信息】 西安科技大学 ， 大地测量学与测量工程， 2004， 硕士

【摘要】 地图浏览器是Web GIS的客户端核心软件，广泛应用于地理空间信息的发布、浏览和查询。SVG（Scalable Vector Graphics，可缩放矢量图形）是一种基于互联网第二代交互语言XML（Extensible Markup Language，可扩展标记语言）的开放标准的矢量图形描述语言。SVG能够彻底满足Web开发者对动态、可缩放和与平台无关的矢量图形的要求，是解决目前网络带宽严重不足的一种有效的解决方案，对地学工作者来说无疑给空间数据的发布、交换、表达带来了极大的便利。Java是一种分布式的，具有跨平台特性的程序设计语言，具有很多面向网络应用的优良特性。Batik是Apache组织开发项目里最重要的SVG开放源代码软件计划之一，是一个基于Java技术的SVG工具集，适用于可缩放矢量图形（SVG）格式的各种应用。通过Batik提供的核心模块，开发人员可以在其应用程序中集成SVG的各种应用。在本文撰写过程中，作者利用Java语言结合Batik核心模块开发了专用于SVG地图数据发布的地图浏览器，并实现了地图浏览器的基本功能，如地图的缩放、漫游、属性查询和图层控制等，为进一步开发基于SVG的网络地理信息系统进行了有益的尝试。本文首先分析了SVG的技术特点和文档结构；然后根据空间数据的地理实体模型，采用层和层组的数据组织方式，运用SVG对地理空间数据进行了编码，并介绍了SVG矢量地图制作与编码的一般过程；接下来阐述了Java语言和Batik的设计思想，并介绍了利用Jbuilder可视化Java开发工具进行编程的方法；最后阐述了浏览器的设计思想和关键技术，诸如：界面设计、功能设计、模块和类、接口设计模型，并利用面向对象的方法，从静态和动态方面分析了浏览器的部件结构、运行状态和事件交互过程，并给出了一些关键性程序代码。更多还原

【Abstract】 The map browser is the client-side core software of Web GIS,and it is extensively used to released,look through and inquired about geographic spatical information.Scalable Vector Graphics (SVG) is an XML language for describing two-dimensional graphics.The SVG can thoroughly meet the Web developer’s appeal to vector graphic which is dynamic,scalable and platform independent,and is a resolvent to the bandwidth which is seriously insufficient at this time,and it undoubtedly brings extremely facilitating for physiography worker to the spatial data’s release,exchange and representation.Java is a kind of programme language which has the distribute,platform independent property and has a lot of good property to the network application.Batik is a Java(tm) technology based toolkit for applications or applets that want to use images in the Scalable Vector Graphics(SVG) format for various purposes,such as viewing,generation or manipulation. The project’s ambition is to give developers a set of core modules which can be used together or individually to support specific SVG solutions. In process of writing this thesis,the author try developing a special map browser by Java language and Batik and already realize its basic function such as zoom、pan、query that the map browser ought to have , and give the useful attempt to Web-GIS based on SVG.Firstly,This thesis analyses the feature of SVG and it’s document constructure. Afterwards give an account of the encoding process and means which based on the geography physicals model,adopt the means of layer and grouped layer,utilize SVG to encode and group the data of vector map. And then elaborated the design idea of Java language and Batik, and introduce how to use the Jbuilder to carry on the concrete means of programming. In the end,the Browser design idea and its key technique were elaborated,such as the interface design、function design、the module、class and the pattern of interface design,and analyse its unit architecture、running state、and event mutually process,from static state and dynamic state,and present some main codes.更多还原