Liferay portal simple demo

Create a simple web project in myeclipse:

 

(1) create a class under SRC and inherit from genericportlet. The Code is as follows:

Package COM. portlet; </P> <p> Import Java. io. ioexception; </P> <p> Import javax. portlet. actionrequest; <br/> Import javax. portlet. actionresponse; <br/> Import javax. portlet. genericportlet; <br/> Import javax. portlet. portletexception; <br/> Import javax. portlet. renderrequest; <br/> Import javax. portlet. renderresponse; </P> <p> public class mytableportlet extends genericportlet {</P> <p> @ override <br/> protected voi D doview (renderrequest request, renderresponse response) <br/> throws portletexception, ioexception {<br/> string name = request. getparameter ("name"); </P> <p> If (name = NULL | "". equals (name) {<br/> This. getportletcontext (). getrequestdispatcher ("/table. JSP "). include (request, response); </P> <p >}< br/> else {<br/> This. getportletcontext (). getrequestdispatcher ("/display. JSP? Username = "+ name ). include (request, response); <br/>}</P> <p> @ override <br/> protected void doedit (renderrequest request, renderresponse response) <br/> throws portletexception, ioexception {<br/> This. getportletcontext (). getrequestdispatcher ("/table. JSP "). include (request, response); <br/>}</P> <p> @ override <br/> Public void processaction (actionrequest arg0, actionresponse arg1) <br/> throws portletexception, ioexception {<br/> system. out. println ("processaction method"); <br/>}</P> <p> @ override <br/> Public void render (renderrequest request, renderresponse response) <br/> throws portletexception, ioexception {<br/> This. doview (request, response); <br/>}< br/>}

 

 

(2) Create Table. jsp and the display. jsp codes are as follows:

1. Table. jsp:

<% @ Page import = "javax. portlet. portleturl "%> <br/> <% @ page import =" javax. portlet. renderresponse "%> <br/> <% @ taglib uri =" http://java.sun.com/portlet "prefix =" Portlet "%> <br/> <% @ page Language =" Java "contenttype =" text/html; charset = GBK "%> <br/> <Portlet: defineobjects/> <br/> <% <br/> // an error is reported, but no object is found, but don't worry about it (like this) <br/> portleturl Pu = renderresponse. createrenderurl (); <br/> Pu. setparameter ("AAA", "BBB"); <br/> // portleturl Pu = (renderresponse) response ). createactionurl (); <br/>%> <br/> <form method = "Post" Action = "<% = Pu. tostring () %> "> <br/> <Table border =" 1 "> <br/> <tr> <br/> <TD> Username: </TD> <br/> <TD> <input type = "text" name = "name"/> </TD> <br/> </tr> <br/> <tr align = "center"> <br/> <TD colspan = "2"> <input type = "Submit"/> </TD> <br/> </ tr> <br/> </table> <br/> </form>

 

2. display. jsp:

<% @ Taglib uri = "http://java.sun.com/portlet" prefix = "Portlet" %> <br/> <% @ page Language = "Java" contenttype = "text/html; charset = GBK "%> </P> <p> <Portlet: defineobjects/> <br/> <% <br/> string name = request. getparameter ("username"); <br/>%> <br/> <p> welcome, <% = Name %> </P>

 

(3) download the liferay-portal-tomcat-4.2.1.zip and decompress it to the F:/liferay/tomcat directory (this is what I did on my machine)

 

(4) To F:/liferay/tomcat/webapps/root/WEB-INF directory to configure three XML files

1. Add in the portlet-ext.xml file:

<Portlet> <br/> <Portlet-Name> mytableportlet </Portlet-Name> <br/> <display-Name> mytableportlet </display-Name> <br/> <portlet-class> COM. portlet. mytableportlet </Portlet-class> <br/> <expiration-Cache> 0 </expiration-Cache> <br/> <supports> <br/> <mime-type> text /html </mime-type> <br/> </supports> <br/> <mime-type> text/html </mime-type> <br/> <Portlet-mode> edit </Portlet-mode> <br/> </supports> <br/> <Portlet-Info> <br/> <title> mytableportlet </title> <br/> <short-title> mytableportlet </short-title> <br/> <keywords> mytableportlet </keywords> <br/> </ portlet-Info> <br/> <Portlet-preferences> <br/> <preference> <br/> <Name> Portlet-title </Name> <br/> <Value> </value> <br/> </preference> <br/> <Name> show-Portlet-borders </Name> <br/> <value> true </value> <br/> </preference> <br/> </Portlet-preferences> <br/> <security-role-ref> <br/> <role-Name> guest </role-Name> <br/> </security-role-ref> <br/> <security-role-ref> <br/> <role-Name> power user </role-Name> <br/> </security-role-ref> <br/> <security-role-ref> <br/> <role-Name> User </role-Name> <br/> </security-role-ref> <br/> </Portlet>

 

2. Add in the liferay-portlet-ext.xml file:

<Portlet> <br/> <Portlet-Name> mytableportlet </Portlet-Name> <br/> <use-default-template> true </use-default-template> <br/> <instanceable> true </instanceable> <br/> </Portlet>

 

3. Add:

<Category name = "category. Test"> <br/> <Portlet id = "mytableportlet"/> <br/> </Category>

 

 

(5) copy the. Class file to the corresponding F:/liferay/tomcat/webapps/root/WEB-INF/classes directory

 

 

(6) Start the startup. Bat service under F:/liferay/tomcat/bin, and the program can run.