SpringSource Javax Servlet JSP JSTL Framework latest version and update content

SpringSource Javax Servlet JSP JSTL Framework latest version and update content Javax Servlet JSP JSTL is a commonly used framework in the development of Java Web. They provide developers with a wealth of label libraries to simplify the development process.Let's learn about their latest version and update content. The latest version of: -Javax Servlet: The latest version is version 4.0. -JSP: The latest version is version 2.3. -JSTL: The latest version is version 1.2. Update contents: 1. Javax Servlet 4.0: -Procked HTTP/2 protocol: Javax Servlet 4.0 introduces new features that allow developers to use the HTTP/2 protocol in the application. -A asynchronous Servlet: Developers can use the new asynchronous Servlet API to handle non -blocking requests and responses to improve the performance and scalability of the application. -Servlet security enhancement: The new Servlet API provides enhanced security functions, including Cookie Cookie and support HSTS (HTTP Strict Transport Security) heads. -In upgrade of the annotation support: The new version enhances the support for the annotation, so that developers can more conveniently use the annotations to configure the service and filter. 2. JSP 2.3: -Drive Java 8 features: JSP 2.3 version supports the new features of Java 8, such as Lambda expressions and function interfaces. -Buy EL 3.0: JSP 2.3 is built on Expression Language 3.0, which provides more powerful and flexible expression language functions. -An operation label: The new version adds an operating label, and you can use them to output the content into the response without using the script. 3. JSTL 1.2: -In enhanced EL support: JSTL 1.2 provides enhanced support for Expression Language (EL), including collection operations, conditional sentences and cycles. -Format label: The new version adds a formatting label, and developers can easily format the dates, numbers and messages such as them easily. -The new XML tag: JSTL 1.2 introduces a new XML tag, which can easily handle XML documents. The following is a Java code example using JSTL for database query: <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %> <sql:setDataSource var="dataSource" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/mydb" user="username" password="password"/> <sql:query dataSource="${dataSource}" var="result"> SELECT * FROM users; </sql:query> <table> <c:forEach var="row" items="${result.rows}"> <tr> <td>${row.username}</td> <td>${row.email}</td> </tr> </c:forEach> </table> The above is some introduction to the latest version and update content of SpringSource Javax Servlet JSP JSP JSTL framework.These updates provide more convenient and powerful functions for developers, making Java Web development more efficient and easy.