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  • Struts Tutorial -- Code Examples

    Struts Tutorial - Struts Setup - First Struts Application Setup

    Follow the steps to setup struts.

    You can download First Struts Application Setup zip file - Login using facebook ..Code is ready..just download and run in tomcat..
    unzip the downloaded zip file into tomcat/webapps directory. Then restart tomcat.
    In the browser if you type :
    http://localhost:8080/testApp/EmpForm.jsp


    Step 1. Create folders like below.

    testApp    
         |    
    ----src     // Java Source Code folder
    ----WEB-INF //within folder    
              |    
    ---------web.xml //file   
    ---------struts-config.xml //file   
    ---------struts-bean.tld //file   
    ---------struts-html.tld //file   
    ---------struts-logic.tld //file   
    ---------struts-nested.tld //file   
    ---------struts-template.tld //file   
    ---------struts-tiles.tld //file   
    ---------classes //folder   
    ---------lib //within folder   
                  |    
    -------------struts.jar //jar file   
    -------------commons-beanutils.jar //jar file   
    -------------commons-collections.jar //jar file   
    -------------commons-digester.jar //jar file   
    -------------commons-fileupload.jar //jar file   
    -------------commons-lang.jar //jar file   
    -------------commons-logging.jar //jar file   
    -------------commons-validator.jar //jar file   

    Step 2. Add ActionServlet Entry into the web.xml file

    Any struts web application contain the ActionServlet configuration in web.xml file.
    On load-on-startup the servlet container Instantiate the ActionServlet .
    First Task by ActionServlet : The ActionServlet takes the Struts Config file name as an init-param.
    At startup, in the init() method, the ActionServlet reads the Struts Config file and load into memory.
    Second Task by ActionServlet : If the user types http://localhost:8080/testApp/submitForm.do in the browser URL bar, the URL will be intercepted and processed by the ActionServlet since the URL has a pattern *.do, with a suffix of "do". Because servlet-mapping is
    <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    Third Task by ActionServlet : Then ActionServlet delegates the request handling to another class called RequestProcessor by invoking its process() method.

    <?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">
    <web-app>
    <display-name>Struts</display-name>
    <description>
    Example app using struts
    </description>
    <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
    <param-name>config</param-name>
    <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    <taglib>
    <taglib-uri>/WEB-INF/struts-bean.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
    </taglib>
    <taglib>
    <taglib-uri>/WEB-INF/struts-nested.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-nested.tld</taglib-location>
    </taglib>
    <taglib>
    <taglib-uri>/WEB-INF/struts-html.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-html.tld</taglib-location>
    </taglib>
    <taglib>
    <taglib-uri>/WEB-INF/struts-template.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-template.tld</taglib-location>
    </taglib>
    <taglib>
    <taglib-uri>/WEB-INF/struts-tiles.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-tiles.tld</taglib-location>
    </taglib>
    <taglib>
    <taglib-uri>/WEB-INF/struts-logic.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
    </taglib>
    </web-app>

    Step 3. Add Action mapping and form entry into the stuts-confix.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN"
    "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
    <struts-config>
    <form-beans>
    <form-bean name="EmpForm" type="com.techfaq.form.EmpForm"> </form-bean>
    </form-beans>
    <action-mappings>
    <action path="/submitForm"
    type="com.techfaq.action.EmpAction"
    name="EmpForm"
    scope="request"
    validate="false"
    input="EmpForm.jsp">
    <forward name="success"
    path="success.jsp"/>
    <forward name="failure" path="failure.jsp" />
    </action>
    </action-mappings>
    </struts-config>

    Step 4. In the JSP page (EmpForm.jsp) - place into testApp folder

    <%@ taglib uri="/WEB-INF/struts-tiles.tld" prefix="tiles" %>
    <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
    <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
    <%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
    <html:form>
    <html:form action="/submitForm.do" method="post">
    <html:text property="firstName" size="20" maxlength="50"/>
    <html:submit >Save</html:submit>
    </html:form>

    Step 5. In the EmpForm

    package com.techfaq.form;
    public class EmpForm extends ActionForm {
    int empId;
    String firstName;
    public String getFirstName() {
    return firstName;
    }
    public void setFirstName(String firstName) {
    this.firstName = firstName;
    }
    public int getEmpId() {
    return empId;
    }
    public void setEmpId(int empId) {
    this.empId = empId;
    }
    }

    Step 5. In the Action class.

    package com.techfaq.action;
    public class EmpAction extends Action {
    public ActionForward execute(ActionMapping mapping,
    ActionForm form, HttpServletRequest request,
    HttpServletResponse response) throws Exception
    {
    //your logic
    EmpForm empform =(EmpForm)form;
    String empName = empform.getFirstName()// User entered data you can get like this.
    mapping.findForward("success");
    }
    }

    Step 6. In the JSP page (success.jsp) - place into testApp folder

    <%@ taglib uri="/WEB-INF/struts-tiles.tld" prefix="tiles" %>
    <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
    <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
    <%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
    <html>
    Emp Save Sucessfull.
    <html>

    In the browser if you type :
    http://localhost:8080/testApp/EmpForm.jsp
    Enter Emp name in the text box and submit the "Save" BUTTON. Based on mapping.findForward("success");
    it will return success.jsp. In the browser you can see.
    Emp Save Sucessfull.

    The information you are posting should be related to java and ORACLE technology. Not political.