applets servlets and java server pages

... methods Now compile the PureJSPBase servlet to the <SERVER_ROOT>/purejsp/WEB-INF/classes directory and move the SubclassJSP.jsp to the <SERVER_ROOT>/purejsp/ directory You should then ... not often used directly in a JavaServer Page The exception to this is in the creation of custom tags session The implicit session object holds a reference to a javax.servlet.http.HttpSession ... ServletContext is a great place to share objects between JSPs and servlets In the following example, we use the application object to store and access our application's specific information We will

Ngày tải lên: 03/07/2014, 06:20

... Listing 10.6: Applet1.java import java.awt.*; import java.awt.event.*; import java.applet.*; import javax.swing.*; public class Applet1 extends JApplet { boolean isStandalone = false; TextArea ... JSP, copy the compiled Applet1.class and dt.jar files to the <SERVER_ROOT>/purejsp/TestApplet directory and copy the UseJSPPlugin.jsp file to the <SERVER_ROOT>/purejsp directory Now ... they are implemented and how you can use them In Chapter 11, we cover the scope differences when using JavaBeans in a JSP Overview As we discussed in Chapter 3, "JavaBeans and JSP Concepts,"

Ngày tải lên: 03/07/2014, 06:20

... Parameters  java.lang.String Returns  java.lang.String getServer Info() Method public java.lang.String getServerInfo() The getServerInfo() method returns a String representing the name and version ... http, https, and ftp. getScheme() has no parameters and throws no exceptions. Returns  java.lang.String getServerName() Method public java.lang.String getServerName() The getServerName() ... returns no value and throws no exceptions. Parameters  java.lang.String log(java.lang.String msg, java.lang.Throwable throwable) Method public void log(java.lang.String msg, java.lang.Throwable

Ngày tải lên: 03/07/2014, 06:20

... servlet and writes them to a log file. The location of the log is server specific. log() returns no value and throws no exceptions. Parameters  java.lang.String log(java.lang.String message, java.lang.Throwable ... the servlet and writes them to a log file. The location of the log is server specific. log() returns no value and throws no exceptions. Parameters  java.lang.String - 218 - log(java.lang.String ... log(java.lang.String message, java.lang.Throwable t) Method public void log(java.lang.String message, java.lang.Throwable t) This log() method takes the passed in message and Throwable object and logs the

Ngày tải lên: 03/07/2014, 06:20

... Overview The java.servlet.http package contains the interfaces and classes that are implemented and extended, respectively, to create HTTP-specific servlets Figure 21.1 contains the javax.servlet.http ... Trang 2Figure 21.1: The javax.servlet.http object model Interfaces Interfaces for the java.servlet.http package are HttpServletRequest, HttpServletResponse, HttpSession, and HttpSessionBindingListener ... public void addHeader(java.lang.String name, java.lang.String value) The addHeader() method adds another value to the response for the given header addHeader() returns no value and throws no exceptions

Ngày tải lên: 03/07/2014, 06:20

... collection of Enterprise Java tools: JavaServer Pages (JSP) JavaServer Pages are built on top of Java servlets and are designed to increase the efficiency in which programmers, and even nonprogrammers, ... page authors can use in the web pages, such as JSP custom actions and JavaBeans, and how to combine JSP with other Java server-side technologies, such as servlets and EJB The book is structured ... how to develop your own custom actions and JavaBeans, and how to combine JSP with other Java server-side technologies, such as servlets and Enterprise JavaBeans (EJB) This portion of the book

Ngày tải lên: 13/08/2014, 21:21

... grouped into three categories: standard, custom, and JSP Standard Tag Library Standard actions are the few actions defined by the JSP specification itself All JSP standard actions (Table 5-1) use ... what Java type it represents Trang 16Chapter 7 Using Custom Tag Libraries and the JSP Standard Tag Library So far we've covered the JSP basics the primary parts of a page and installation and ... to install and use it, and what the JSP Standard Tag Library (JSTL) brings to the table 7.1 What Is a Custom Tag Library? The JSP standard actions, such as the <jsp:useBean> and <jsp:getProperty>

Ngày tải lên: 13/08/2014, 21:21

... declaration and use (color.jsp) <%@ page language="java" contentType="text/html" %> <%! String randomColor( ) { java.util.Random random = new java.util.Random( ); ... requires that the classes in the java.lang, javax.servlet, javax.servlet.jsp, and the javax.servlet.http packages are available by default to scripting elements when Java is used as the scripting ... including Java code in web pages If so, you may wonder why you haven't seen any Java code in the examples so far That's because there's really no reason to embed raw Java code in JSP pages anymore

Ngày tải lên: 13/08/2014, 21:21

... <ora:addCookie> action has two mandatory attributes, name and value, and one optional attribute, maxAge Each attribute is represented by an instance variable and a standard property setter method: ... efficient handling of iteration actions that don't need access to their element body A tag handler that implements the IterationTag interface is at first handled the same way as a tag handler implementing ... value and the body content as the link text The most interesting part of this tag handler is how it reads the body content and writes its output to the current response stream Both tasks are handled

Ngày tải lên: 13/08/2014, 21:21

... such as which driver class and JDBC URL to use, the number of initial and maximum number of pooled connections, and the database account name and password, are set by a server administrator The ... http://industry.java.sun.com/products/jdbc/drivers Figure 23-1 shows how the main interfaces and classes are related Trang 3Figure 23-1 Main JDBC interfaces and classes All JDBC core classes and interfaces ... contains a number of Connection objects shared by all servlets and JSP pages For each request, one Connection is checked out from the pool, used, and checked back in Using a pool solves the problems

Ngày tải lên: 13/08/2014, 21:21

... for handling exceptions thrown while evaluating the body of an action element and can be implemented a tag handler in addition to one of the main tag handler interfaces: Tag, IterationTag, and ... wrap them D.3 Tag Handler Types The JSP specification defines a number of classes and interfaces in the javax.servlet.jsp.tagext package These classes are used to develop tag handler classes for ... corresponding tag handler implements the BodyTaginterface The container makes the BodyContent instance available to the tag handler by calling the setBodyContent( ) method, so the tag handler can process

Ngày tải lên: 13/08/2014, 21:21

... Trang 1Thành viên trong nhóm:Trang 2JSP (Java Server Pages)& Custom Tags Trang 3JAVA SERVER PAGESTrang 41 Khái niệm JSPJSP là một nền tảng Java cho phép tạo nội dung động cho các trong ... thực thi của từng thẻ Các class thực thi được gọi là các tag handler, có 2 loại class handler: - Simple tag handler - Classic tag handler Khi một trang JSP có chứa custom tag được chuyển đổi sang ... giữa client & server Trang 18HttpSession Object-Do server sinh ra -The servlet container dùng interface này để tạo ra một phiên làm việc (session) giữa HTTP Client & HTTP server. -Các biến

Ngày tải lên: 31/08/2016, 09:54

... supports noattributes result in the download of the Java Plug-in software (ifrequired) and subsequent execution of the specified Javaapplet or JavaBeans™ component The body of the actioncan contain ... the web container This method allows servletsand JSP pages to gain access to contexts other than their own.The URI path must be absolute (beginning with “/”) and isinterpreted based on the containers’ ... futureversion of the Java Servlet API public Enumeration getServlets() of all the servlets known to this servlet context As of theServlet 2.1 API, this method always returns an empty Enumeration and remains

Ngày tải lên: 26/03/2019, 11:29

... Server-side Web Programming Lecture 4: Java Server Pages for Complex Forms Parsing Numeric Input • getParameter method returns ... complex handling – Will truly complex handling in multipage servlet structures Example Result Checkbox HTML • Basic form: Camera Scanner 20 List JSP • Sent in form …name= value… to server –

Ngày tải lên: 29/03/2021, 10:55

... request for somepage.jsp Tomcat server somepage.jsp html html Java html Java html html html html resulting html page html html html html html html Trang 5Java Server PagesTrang 6JSP Syntax• Basic ... Trang 1Server-side Web ProgrammingLecture 3: Introduction to Java Server Pages Trang 2Form Handling• Form data appended to request string Generates ... • Modify or query database Trang 4Server Page Model• Html document with executable code interspersed • When page requested: – Code executed – Html generated and inserted in its place – Final

Ngày tải lên: 29/03/2021, 10:55

... usual to use Java Server Pages Networking documents and databases - Dynamic websites: Java Server Pages (JSPs) and Servlets - page Java Server Pages Technologies such as CGI and Servlets make ... different Java technologies that allow us to build dynamic web pages: Servlets, Java Server Pages (JSPs) and JavaScript • Servlets are Java programs that run on a web server and build web pages dynamically; ... websites: Java Server Pages (JSPs) and Servlets - page Java Server Pages Embedding bits of Java code into JSPs is quite easy However, when we have a lot of Java codes in the HTML, identifying the Java...

Ngày tải lên: 31/03/2014, 20:20

... Microsystems, the Sun logo, Java, Jini, JavaServer Pages, Enterprise JavaBeans, Java Compatible, JDK, JDBC, JAVASCRIPT, JavaBeans, JavaMail, Write Once, Run Anywhere, and Java Naming and Directory Interface ... Overview This chapter provides an overview of the JavaServer Pages technology 1.1 The JavaServer Pages Technology JavaServer Pages technology is the Java platform technology for building applications ... Components and Containers The JavaServer Pages technology builds on the Servlet standard extension JavaServer Pages is a Standard Extension that is defined extending the concepts in the Servlet Standard...

Ngày tải lên: 21/08/2013, 09:26