2. Servlet

  • 2.1. Servlet tutorial

    Servlet provides a component-based, platform-independent approach to creating web-based applications that is not limit...
    2023-12-08 23:00:02 UTC
  • 2.2. Servlet introduction

    2.2.1. What is Servlet? ¶ Java Servlet is a program that runs on a Web ...
    2023-12-11 23:00:02 UTC
  • 2.3. Servlet environment settings

    The development environment is where you can develop, test, and run Servlet. Like any other Java program, you...
    2023-12-11 23:00:02 UTC
  • 2.4. Servlet lifecycle

    The Servlet life cycle can be defined as the whole process from creation to destruction. The following is the process ...
    2023-12-11 23:00:02 UTC
  • 2.5. Servlet instance

    Servlet is the service HTTP request and implementation javax.servlet.Servlet the Java class ...
    2023-12-11 23:00:02 UTC
  • 2.6. Servlet form data

    In many cases, you need to pass some information, from the browser to the Web server, and eventually to the daemon. Br...
    2023-12-11 23:00:02 UTC
  • 2.7. Servlet client HTTP request

    When a browser requests a web page, it sends specific information to the Webserver that cannot be read directly becaus...
    2023-12-15 23:00:02 UTC
  • 2.8. Servlet server HTTP response

    As discussed in the previous section, when an Web server responds to an HTTPrequest, the response usually includes a s...
    2023-12-12 23:00:02 UTC
  • 2.9. Servlet HTTP status code

    The format of the HTTP request and HTTP response message is similar, and thestructure is as follows: ...
    2023-12-12 23:00:02 UTC
  • 2.10. Servlet authoring filter

    Servlet filters can dynamically intercept requests and responses to transform or use the information contained in the ...
    2023-12-14 23:00:02 UTC
  • 2.12. Servlet Cookie processing

    Cookie is a text file stored on the client computer and retains a variety oftracking information. Java Servlet clearly...
    2023-12-13 23:00:02 UTC
  • 2.13. Servlet Session tracking

    HTTP is a “stateless” protocol, which means that every time a client retrieves a web page, the client opens a separate...
    2023-12-14 23:00:02 UTC
  • 2.14. Servlet database access

    This tutorial assumes that you already know how JDBC applications work. Before you begin to learn Servlet database acc...
    2023-12-13 23:00:02 UTC
  • 2.15. Servlet file upload

    Servlet can be used with the HTML form tag to allow users to upload files tothe server. The uploaded file can be a tex...
    2023-12-13 23:00:02 UTC
  • 2.16. Servlet processing date

    One of the most important advantages of using Servlet is that you can use most of the methods available in the core Ja...
    2023-12-13 23:00:02 UTC
  • 2.17. Servlet web page redirection

    When the document is moved to a new location and we need to send this new location to the client, we need to use web p...
    2023-12-14 23:00:02 UTC
  • 2.19. Servlet automatically refreshes the page

    Suppose there is a web page that shows on-the-spot competition results or stock market conditions or currency exchange...
    2023-12-14 23:00:02 UTC
  • 2.21. Servlet package

    The Web application structure involving WEB-INF subdirectories is the standard for all Java web applications and is sp...
    2024-03-05 23:37:47 UTC
  • 2.22. Servlet debugging

    Testing / debugging Servlet is always a difficult point in the process of development and use. Servlet often involves ...
    2023-12-18 23:00:02 UTC
  • 2.23. Servlet internationalization

    Before we begin, let’s take a look at three important terms: Internationalization (i18n): this mea...
    2023-12-15 23:00:02 UTC
  • 2.24. Useful resources for Servlet

    This chapter lists the Servlet website, books, and articles. 2.24.1. Useful websites for ...
    2023-12-15 23:00:02 UTC
Principles, Technologies, and Methods of Geographic Information Systems  102

In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.