Code examples: https://github.com/SFRJ/vavrExamples
"Javing" is the present continuous form of "to program in Java". Here you will find: code snippets, examples, tips, tricks, tutorials, best practices, miscellaneous and much more. Enjoy your Javing!
Showing posts with label example. Show all posts
Showing posts with label example. Show all posts
Sunday, June 16, 2019
Enhance your functional java experience with VAVR
In this video I briefly show some features that Vavr has and Java-8 doesn't.
Code examples: https://github.com/SFRJ/vavrExamples
Code examples: https://github.com/SFRJ/vavrExamples
Sunday, March 17, 2013
PrimePush in Jboss AS 7
It toke me a while to make PrimePush work in JBoss AS 7.
In this post I will just paste the codes of a simple hello world like program that uses PrimePush libraries to submit an String to a web socket.
The requirement for this exercise, is that you know to create a new JSF project with maven and deploy it into the JBoss 7 AS application server. All the steps to do that can be found in one of my previous post:
http://javing.blogspot.ie/2013/01/how-to-create-new-jsf-21-project-and.html
Once you have your project ready, lets make the following changes in the configuration files:
pom.xml
faces-config.xml
web.xml
Now that everything should be configured, lets write a very simple JSF 2 program to show a primepush.
index.xhtml
MyCommentBean.java
So now that we have the application, compile and deploy it in JBoss.
Run it on your browser by just accessing the URL:
http://localhost:8080/pushcomment/
Open a few browsers and see how all the clients listening to the socket will get the updates:
Download this project from:
http://www.2shared.com/file/Vy8ZSkUQ/pushcomment.html
In this post I will just paste the codes of a simple hello world like program that uses PrimePush libraries to submit an String to a web socket.
The requirement for this exercise, is that you know to create a new JSF project with maven and deploy it into the JBoss 7 AS application server. All the steps to do that can be found in one of my previous post:
http://javing.blogspot.ie/2013/01/how-to-create-new-jsf-21-project-and.html
Once you have your project ready, lets make the following changes in the configuration files:
pom.xml
1: <?xml version="1.0" encoding="UTF-8"?>
2: <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3: xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
4: <modelVersion>4.0.0</modelVersion>
5: <groupId>my.test.project</groupId>
6: <artifactId>my.test.project</artifactId>
7: <version>0.0.1-SNAPSHOT</version>
8: <packaging>war</packaging>
9: <name>Java EE 6 webapp project</name>
10: <properties>
11: <jboss.bom.version>1.0.0.Final</jboss.bom.version>
12: <version.faces.mojarra>2.1.7</version.faces.mojarra>
13: <version.primefaces>3.4.2</version.primefaces>
14: <version.atmosphere>1.0.8</version.atmosphere>
15: </properties>
16: <dependencyManagement>
17: <dependencies>
18: <dependency>
19: <groupId>org.jboss.bom</groupId>
20: <artifactId>jboss-javaee-6.0-with-tools</artifactId>
21: <version>${jboss.bom.version}</version>
22: <type>pom</type>
23: <scope>import</scope>
24: </dependency>
25: <dependency>
26: <groupId>junit</groupId>
27: <artifactId>junit</artifactId>
28: <version>4.10</version>
29: <type>jar</type>
30: <scope>test</scope>
31: </dependency>
32: </dependencies>
33: </dependencyManagement>
34: <dependencies>
35: <dependency>
36: <groupId>javax.enterprise</groupId>
37: <artifactId>cdi-api</artifactId>
38: <scope>provided</scope>
39: </dependency>
40: <dependency>
41: <groupId>org.jboss.spec.javax.servlet</groupId>
42: <artifactId>jboss-servlet-api_3.0_spec</artifactId>
43: <scope>provided</scope>
44: </dependency>
45: <dependency>
46: <groupId>org.jboss.spec.javax.faces</groupId>
47: <artifactId>jboss-jsf-api_2.1_spec</artifactId>
48: <scope>provided</scope>
49: </dependency>
50: <dependency>
51: <groupId>org.jboss.spec.javax.el</groupId>
52: <artifactId>jboss-el-api_2.2_spec</artifactId>
53: <scope>provided</scope>
54: </dependency>
55: <dependency>
56: <groupId>com.sun.faces</groupId>
57: <artifactId>jsf-impl</artifactId>
58: <version>${version.faces.mojarra}</version>
59: <scope>provided</scope>
60: </dependency>
61: <dependency>
62: <groupId>org.primefaces</groupId>
63: <artifactId>primefaces</artifactId>
64: <version>${version.primefaces}</version>
65: </dependency>
66: <dependency>
67: <groupId>org.atmosphere</groupId>
68: <artifactId>atmosphere-runtime</artifactId>
69: <version>${version.atmosphere}</version>
70: <exclusions>
71: <exclusion>
72: <artifactId>slf4j-api</artifactId>
73: <groupId>org.slf4j</groupId>
74: </exclusion>
75: </exclusions>
76: </dependency>
77: <dependency>
78: <groupId>junit</groupId>
79: <artifactId>junit</artifactId>
80: <scope>test</scope>
81: </dependency>
82: </dependencies>
83: <build>
84: <finalName>pushcomment</finalName>
85: <plugins>
86: <plugin>
87: <artifactId>maven-compiler-plugin</artifactId>
88: <version>2.3.1</version>
89: <configuration>
90: <source>1.6</source>
91: <target>1.6</target>
92: </configuration>
93: </plugin>
94: <plugin>
95: <artifactId>maven-war-plugin</artifactId>
96: <version>2.1.1</version>
97: <configuration>
98: <failOnMissingWebXml>false</failOnMissingWebXml>
99: </configuration>
100: </plugin>
101: </plugins>
102: </build>
103: <repositories>
104: <repository>
105: <id>prime-repo</id>
106: <name>PrimeFaces Maven Repository</name>
107: <url>http://repository.primefaces.org</url>
108: <layout>default</layout>
109: </repository>
110: </repositories>
111: </project>
faces-config.xml
1: <?xml version="1.0" encoding="UTF-8"?>
2: <!-- This file is not required if you don't need any extra configuration. -->
3: <faces-config version="2.0" xmlns="http://java.sun.com/xml/ns/javaee"
4: xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
5: xsi:schemaLocation="
6: http://java.sun.com/xml/ns/javaee
7: http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd">
8: </faces-config>
web.xml
1: <?xml version="1.0" encoding="UTF-8"?>
2: <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3: xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
4: xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
5: version="3.0">
6: <display-name>push-comment</display-name>
7: <welcome-file-list>
8: <welcome-file>index.html</welcome-file>
9: </welcome-file-list>
10: <context-param>
11: <param-name>javax.faces.PROJECT_STAGE</param-name>
12: <param-value>Development</param-value>
13: </context-param>
14: <context-param>
15: <param-name>javax.faces.FACELETS_REFRESH_PERIOD</param-name>
16: <param-value>2</param-value>
17: </context-param>
18: <context-param>
19: <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
20: <param-value>.xhtml</param-value>
21: </context-param>
22: <context-param>
23: <param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
24: <param-value>true</param-value>
25: </context-param>
26: <context-param>
27: <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
28: <param-value>server</param-value>
29: </context-param>
30: <context-param>
31: <param-name>javax.faces.PARTIAL_STATE_SAVING</param-name>
32: <param-value>true</param-value>
33: </context-param>
34: <context-param>
35: <param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
36: <param-value>true</param-value>
37: </context-param>
38: <context-param>
39: <param-name>com.sun.faces.numberOfLogicalViews</param-name>
40: <param-value>5</param-value>
41: </context-param>
42: <context-param>
43: <param-name>com.sun.faces.numberOfViewsInSession</param-name>
44: <param-value>3</param-value>
45: </context-param>
46: <context-param>
47: <param-name>com.sun.faces.compressViewState</param-name>
48: <param-value>true</param-value>
49: </context-param>
50: <context-param>
51: <param-name>com.sun.faces.serializeServerState</param-name>
52: <param-value>false</param-value>
53: </context-param>
54: <context-param>
55: <param-name>com.sun.faces.preferXHTML</param-name>
56: <param-value>true</param-value>
57: </context-param>
58: <context-param>
59: <param-name>com.sun.faces.disableVersionTracking</param-name>
60: <param-value>true</param-value>
61: </context-param>
62: <context-param>
63: <param-name>primefaces.THEME</param-name>
64: <param-value>aristo</param-value>
65: </context-param>
66: <security-constraint>
67: <display-name>Restrict direct access to XHTML documents.</display-name>
68: <web-resource-collection>
69: <web-resource-name>XHTML</web-resource-name>
70: <url-pattern>*.xhtml</url-pattern>
71: </web-resource-collection>
72: <auth-constraint>
73: <description>No roles defined for direct access to XHTML documents.</description>
74: </auth-constraint>
75: </security-constraint>
76: <session-config>
77: <session-timeout>20</session-timeout>
78: </session-config>
79: <error-page>
80: <exception-type>javax.faces.application.ViewExpiredException</exception-type>
81: <location>/index.jsf</location>
82: </error-page>
83: <servlet>
84: <servlet-name>Faces Servlet</servlet-name>
85: <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
86: <load-on-startup>1</load-on-startup>
87: <async-supported>true</async-supported>
88: </servlet>
89: <servlet-mapping>
90: <servlet-name>Faces Servlet</servlet-name>
91: <url-pattern>/faces/*</url-pattern>
92: </servlet-mapping>
93: <servlet-mapping>
94: <servlet-name>Faces Servlet</servlet-name>
95: <url-pattern>*.jsf</url-pattern>
96: </servlet-mapping>
97: <servlet>
98: <servlet-name>Push Servlet</servlet-name>
99: <servlet-class>org.primefaces.push.PushServlet</servlet-class>
100: <init-param>
101: <param-name>org.atmosphere.useWebSocket</param-name>
102: <param-value>false</param-value>
103: </init-param>
104: <init-param>
105: <param-name>org.atmosphere.cpr.sessionSupport</param-name>
106: <param-value>true</param-value>
107: </init-param>
108: <init-param>
109: <param-name>org.atmosphere.useNative</param-name>
110: <param-value>true</param-value>
111: </init-param>
112: <init-param>
113: <param-name>org.atmosphere.cpr.broadcasterCacheClass</param-name>
114: <param-value>org.atmosphere.cache.HeaderBroadcasterCache</param-value>
115: </init-param>
116: <init-param>
117: <param-name>org.atmosphere.cpr.broadcastFilterClasses</param-name>
118: <param-value>org.atmosphere.client.TrackMessageSizeFilter</param-value>
119: </init-param>
120: <init-param>
121: <param-name>org.atmosphere.resumeOnBroadcast</param-name>
122: <param-value>true</param-value>
123: </init-param>
124: <load-on-startup>1</load-on-startup>
125: <async-supported>true</async-supported>
126: </servlet>
127: <servlet-mapping>
128: <servlet-name>Push Servlet</servlet-name>
129: <url-pattern>/primepush/*</url-pattern>
130: </servlet-mapping>
131: </web-app>
Now that everything should be configured, lets write a very simple JSF 2 program to show a primepush.
index.xhtml
1: <!DOCTYPE html>
2: <html xmlns="http://www.w3.org/1999/xhtml"
3: xmlns:h="http://java.sun.com/jsf/html"
4: xmlns:f="http://java.sun.com/jsf/core"
5: xmlns:c="http://java.sun.com/jsp/jstl/core"
6: xmlns:ui="http://java.sun.com/jsf/facelets"
7: xmlns:p="http://primefaces.org/ui">
8: <f:view contentType="text/html" encoding="UTF-8">
9: <h:head>
10: <meta charset="utf-8" />
11: </h:head>
12: <h:body>
13: <h:form prependId="false">
14: <p:inputTextarea id="cmt" value="#{myCommentBean.comment}"></p:inputTextarea>
15: <p:commandButton actionListener="#{myCommentBean.publish}"
16: process="cmt @this" update="cmt" value="publish"></p:commandButton>
17: </h:form>
18: <span id="pushComment" />
19: <p:socket channel="/comment" onMessage="handleMessage"></p:socket>
20: <script type="text/javascript">
21: function handleMessage(data)
22: {
23: jQuery('#pushComment').text(data);
24: }
25: </script>
26: </h:body>
27: </f:view>
28: </html>
MyCommentBean.java
1: /**
2: * The JSF Backing bean that will push the messages into the socket.
3: */
4: package my.first.push.project;
5: import javax.faces.bean.ManagedBean;
6: import javax.faces.bean.RequestScoped;
7: import org.primefaces.push.PushContextFactory;
8: @ManagedBean(name = "myCommentBean")
9: @RequestScoped
10: public class MyCommentBean {
11: public static final String BROADCAST_CHANNEL = "/comment";
12: private String comment;
13: public String getComment() {return comment;}
14: public void setComment(String comment) {this.comment = comment;}
15: public void publish() {
16: PushContextFactory.getDefault().getPushContext().push(BROADCAST_CHANNEL, this.comment);
17: this.comment = "";
18: }
19: }
So now that we have the application, compile and deploy it in JBoss.
Run it on your browser by just accessing the URL:
http://localhost:8080/pushcomment/
Open a few browsers and see how all the clients listening to the socket will get the updates:
Download this project from:
http://www.2shared.com/file/Vy8ZSkUQ/pushcomment.html
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