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View Code? Open in Web Editor NEWLearning Jakarta Faces for Jakarta EE 10
Learning Jakarta Faces for Jakarta EE 10
<context-param>
entries in web.xml
web.xml
<context-param>
<param-name>
jakarta.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL
</param-name>
<param-value>true</param-value>
</context-param>
web
project.failOnMissingWebXml
property to false, Older versions of Jakarta EE required the /WEB-INF/web.xml
to be presentjakarta.platform:jakarta.jakartaee-api:10.0.0 provided
which also makes sure all Jakarta EE types like FacesServlet
, @Named
, and @Entity
are known to the compiler.maven-war-plugin:3.3.2
to overrides the Eclipse built-in default version of the Maven WAR plug-in. It is not necessary if you’re not facing the error message Could not initialize class WebappStructureSerializer in your Eclipse version.Project Facets
sectionServlet API
is represented by the Dynamic Web Module
entry and needs to be set to version 6.0
, which matches the Jakarta EE 10 specification.Jakarta Faces
and Jakarta Persistence
entries need to be selected and set to versions 4.0 and 3.1
, respectively, matching the Jakarta EE 10 specification.Java facet
is indeed 17 or whatever version is set in pom.xml
Servlet 5.0, Faces 2.3, and Persistence 2.2
, it's not a big problemModify Faceted Project wizard
.Jakarta Persistence
facet, choose Disable Library Configuration
option in the Jakarta Persistence implementation field to instruct Eclipse that the Jakarta Persistence implementation is already provided by the target runtime.WildFly-provided Hibernate
as the actual Jakarta Persistence implementation, which supports automatically discovering of @Entity
annotated classes. To instruct Eclipse to do the same, choose the Discover annotated classes automatically
option in Persistent class management fieldJakarta Faces capabilities
. Also here, instruct Eclipse that the Jakarta Faces implementation is already provided by the target runtime. Choose Disable Library Configuration
option in the Jakarta Faces Implementation Library field.FacesServlet
to match the fictive instance variable name: facesServlet
. Last, change the URL mapping pattern from the Jurassic /faces/*
to the modern *.xhtml
.Unfortunately, the Jakarta Persistence plug-in of the current Eclipse version only puts the generated
persistence.xml
in the wrong place. The plug-in blindly puts the generatedpersistence.xml
file in thesrc/main/java/META-INF
folder which is wrong. Move it intosrc/main/resources/META-INF
to conform to the rules of a Maven project.
<dependencies>
section of the pom.xml
.<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>2.1.210</version>
</dependency>
web.xml
.<data-source>
<name>java:global/DataSourceName</name>
<class-name>org.h2.jdbcx.JdbcDataSource</class-name>
<url>jdbc:h2:mem:test;MODE=LEGACY;DB_CLOSE_DELAY=-1</url>
</data-source>
<name>
of the data source represents the JNDI (Java Naming and Directory Interface) name.java:global/
part is mandatory. The DataSourceName part is free to your choice.persistence.xml
later on.<class-name>
represents the fully qualified name of the javax.sql.DataSource
implementation of the JDBC driver.<url>
represents the JDBC driver–specific URL format.jdbc:h2:mem:test
.MODE=LEGACY
path parameter is basically a work around for Hibernate incompatibility with SQL IDENTITY
type, you could try removing this part in a newer Hibernate version.DB_CLOSE_DELAY=-1
path parameter basically instructs its JDBC driver not to automatically shut down the database when it hasn’t been accessed for some time, even though the application server is still running.javax.sql.DataSource
can now be injected in any servlet container managed artifact such as a servlet or filter as follows:@Resource
private DataSource dataSource;
DataSource#getConnection()
for the plain old JDBC work.persistence.xml
as follows:<persistence-unit name="PersistenceUnitName" transaction-type="JTA">
<jta-data-source>java:global/DataSourceName</jta-data-source>
<properties>
<property name="jakarta.persistence.schema-generation.database.action" value="drop-and-create" />
</properties>
</persistence-unit>
drop-and-create
which basically means that the web application should automatically drop and create all SQL tables based on Jakarta Persistence entities.create or none
(which is the default). Or better yet, a real data base server such as PostgreSQL
instead of an in-memory database.http://localhost:8080/<artifactId>.<version>
, which you can also find in the /standalone/deployments
folder of the WildFly installation.pom.xml
<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin></plugin>
........
</plugins>
</build>
/
, the deployed web application will then end up in the domain root.jboss-web.xml
as src/main/webapp/WEB-INF/jboss-web.xml
then add<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE jboss-web PUBLIC
"-//JBoss//DTD JBOSS 5.0//EN"
"http://www.jboss.org/j2ee/dtd/jboss-web_5_0.dtd"
>
<jboss-web>
<context-root>/</context-root>
</jboss-web>
.xhtml
extension in the URL.web.xml
<context-param>
<param-name>
jakarta.faces.AUTOMATIC_EXTENSIONLESS_MAPPING
</param-name>
<param-value>true</param-value>
</context-param>
.xhtml
the default landing file so you don't specify in the URL. Add the following to the web.xml
<welcome-file-list>
<welcome-file>hello.xhtml</welcome-file>
</welcome-file-list>
@Named
and @RequestScoped
annotations on the class so that it becomes a CDI managed bean@Named:
gives the bean a name, which is used to reference it via EL in the view. Without any attributes, this name defaults to the simple class name with the first letter in lowercase.@RequestScoped:
gives the bean a scope, which means the same bean instance is used throughout the given life span. In this case, that life span is the duration of an HTTP request. When the scope ends, the bean is automatically destroyed.A declarative, efficient, and flexible JavaScript library for building user interfaces.
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