CSE446 Software Quality Management

CSE446 Software Quality Management Orhan Başar Evren Spring 2014 Yazılım ve Uyguluma Geliştirme Yöneticisi

Today’s Overview • Quick Review of HTTP and Servlets • JSP and JSTL • JSP Overview • Code Samples • JSP Lifecycle • Common JSTL Tags • JSF – (Part 1) • JSF Overview • JSF Components • JSF Lifecycle CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSPJava Server Pages CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSP – Java Server Pages • JSP is a technology for developing dynamic and static web pages. • <% Java Code %> in HTML page • High level abstraction of Java Servlets • A servlet for each JSP at runtime CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSP – Sample Code <html> <body> <h1> Hello <% java.util.Date date = new java.util.Date(); out.print("from JSP"); %> </h1> Current date is : <%= date %> </body> </html> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSP – Java Server Pages CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSP – Auto generated Servlet Code out.write("<html>\n"); out.write(" <body>\n"); out.write(" <h1>\n"); out.write(" Hello \n"); java.util.Datedate = new java.util.Date(); out.print("from JSP"); out.write(" </h1>\n"); out.write(" </br>\n"); out.write(" Current date is : "); out.print( date ); out.write("\n"); out.write(" </body>\n"); out.write("</html>\n"); CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSTL – JSP Standard Tag Library • Java ServerPages Standard Tag Library • Extends the JSP Specification for adding tab library for common tags : • Data access • Data Process • Logical conditions and loops • Internationalization • Many other <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSTL – JSP Standard Tag Library • Some Core Tags : • <c:set></c:set> • <c:if> </c:if> • <c:forEach> </c:forEach> • <c:catch></c:catch> • <c:import></c:import> • Usage Examples: • <c:setvar="foo" scope="session" value="..."/> • <c:if test="${!empty param.Add}"> …. </c:if> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSTL – JSP Standard Tag Library • Some InternationalizationTags : • <fmt:formatNumber/> • <fmt:formatDate/> • <fmt:setLocale/> • <fmt:message> • </fmt:message> • Usage Examples: • <fmt:message key=“username_label"/> • <fmt:formatNumber value="${book.price}" type="currency"/> • <fmt:formatDate value="${now}" type="date“/> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSTL – JSP Standard Tag Library • Some SQL Tags : • <sql:setDataSource/> • <sql:query/> • <sql:transaction/> • <sql:update> • Usage Examples: • <sql:setDataSourcedataSource="jdbc/BookDB" /> • <sql:queryvar="books" > select * from books</sql:query> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSTL – JSP Standard Tag Library • Some Functions : • <fn:length/> • <fn:toUpperCase/> • <fn:substring/> • <fn:replace/> • Usage Examples: • <c:if test="${fn:length(param.username) > 0}" > … • <c:setvar=“str2" value="${fn:substring(str1, 5, 15)}" /> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSP – Custom Tags public class HelloTag extends SimpleTagSupport{ public void doTag() throws JspException, IOException { JspWriterout = getJspContext().getOut(); out.println("Hello Custom Tag!"); } } • Define TDL file (XML defination file not listed here) • Usage Examples: • <%@ taglib prefix="ex" uri="WEB-INF/custom.tld"%> • <ex:Hello> </ex:Hello> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSP - deprecated ? JSP is considered "deprecated" as of the Java Enterprise Edition and replaced by JSF. However, it is still commonly used: • Default view technology of Spring MVC • Google cloud App Engine: JSP interface support • Possible to combine with JSF • Many other applications exists Because it is supported with all Java Web Servers, while JSF is supported by Java EE compliant web servers. CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSFJava Server Faces CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF - Java Server Faces • Server side user interface component framework • JSF is specification for a web application development framework • MVC based pattern : Better separation of behavior and presentation • Built-in component model • Facelets: reusable and extendable CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF - Java Server Faces CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF - Java Server Faces • API Specification: JSF 2.2 (contains standard components) • Major Implementations: • Oracle Mojarra • Apache MyFaces • Major Componenet Libraries: • RichFaces, PrimeFaces, ICEFaces, etc. CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF - Java Server Faces • Primefaces’ component examples CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF - Life Cycle • Handling incoming requests • Decoding parameters • Modifying and saving state • Rendering web pages to the browser JSF framework manages lifecycle phases automatically, however it also allows to monitor and manage phases manually CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF - Life Cycle CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF - Life Cycle • Restore View Phase :builds the view of the page, wires events and components and saves the view in FacesContext • Apply Request Values Phase:new (local) values of the components are set by request parameters • Process Validations Phase: values of the components are validated by rules • Update Model Values Phase:Sets local values of the components to server-side object • Invoke Application Phase:handling application level events like form submitting, linking, redirecting etc. • Render Response Phase:building the view and rendering the page CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

JSF - Life Cycle - Monitor public class LifeCycleListener implements PhaseListener{ public PhaseIdgetPhaseId() { return PhaseId.ANY_PHASE; } public void beforePhase(PhaseEvent event) { System.out.println(“BEFORE " + event.getPhaseId()); } public void afterPhase(PhaseEvent event) { System.out.println(“AFTER " + event.getPhaseId()); } } faces-config file: <lifecycle> <phase-listener>package.LifeCycleListener</phase-listener> </lifecycle> CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

Images are referenced from http://docs.oracle.com/javaee/7/tutorial/doc/home.htm CSE446 Software Quality Management Spring 2014 – Orhan Başar Evren - Netaş

CSE446 Software Quality Management