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Passing object from jsp page to action using model driven
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addstudent.jsp
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<%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Student Registration</title> </head> <body> <h1>Enter Student Details</h1> <s:form action="add-student" method="post"> <s:textfield name="name" label="Name" placeholder="Name of the student"/> <s:textfield name="rollNo" label="Roll No" placeholder="Roll no of the student"/> <s:textfield name="branch" label="Branch" placeholder="Branch of the student"/> <s:textfield name="semester" label="Semester " placeholder="Semester of the student"/> <s:submit value="Submit Detail"/> </s:form> </body> </html> |
struts.xml
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<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="default" extends="struts-default"> <action name="add-student" class="com.ebhor.StudentAction"> <result name="success">/pages/showstudent.jsp</result> </action> </package> </struts> |
StudentAction.java
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package com.ebhor; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.ModelDriven; public class StudentAction extends ActionSupport implements ModelDriven<Student> { private Student student=new Student(); public String execute() { System.out.println("Name " + getStudent().getName() + " RollNo " + getStudent().getRollNo() + " Branch " + getStudent().getBranch() + " Smester " + getStudent().getSemester()); return SUCCESS; } @Override public Student getModel() { return student; } public Student getStudent() { return student; } public void setStudent(Student student) { this.student = student; } } |
Student.java
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package com.ebhor; public class Student implements java.io.Serializable { private String name; private String rollNo; private String branch; private String semester; public Student() { } public Student(String name, String rollNo, String branch, String semester) { this.name = name; this.rollNo = rollNo; this.branch = branch; this.semester = semester; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getRollNo() { return rollNo; } public void setRollNo(String rollNo) { this.rollNo = rollNo; } public String getBranch() { return branch; } public void setBranch(String branch) { this.branch = branch; } public String getSemester() { return semester; } public void setSemester(String semester) { this.semester = semester; } } |
showstudent.jsp
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<%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Student Details</title> </head> <body> <h1>Student Detail</h1> Name: <s:property value="name"/><br/> Roll No: <s:property value="rollNo"/><br/> Branch: <s:property value="branch"/><br/> Semester: <s:property value="semester"/><br/> </body> </html> |
OUTPUT
Passing parameter from jsp page to action
Project Explorer
Library files
addstudent.jsp
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<%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Student Registration</title> </head> <body> <h1>Enter Student Details</h1> <s:form action="add-student" method="post"> <s:textfield name="name" label="Name" placeholder="Name of the student"/> <s:textfield name="rollNo" label="Roll No" placeholder="Roll no of the student"/> <s:textfield name="branch" label="Branch" placeholder="Branch of the student"/> <s:textfield name="semester" label="Semester " placeholder="Semester of the student"/> <s:submit value="Submit Detail"/> </s:form> </body> </html> |
struts.xml
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<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="default" extends="struts-default"> <action name="add-student" class="com.ebhor.StudentAction"> <result name="success">/pages/showstudent.jsp</result> </action> </package> </struts> |
StudentAction.java
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package com.ebhor; import com.opensymphony.xwork2.ActionSupport; public class Student extends ActionSupport { private String name; private String rollNo; private String branch; private String semester; public String execute() { System.out.println("Name " + getName() + " rollNo " + getRollNo() + " branch " + getBranch() + " smester " + getSemester()); return SUCCESS; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getRollNo() { return rollNo; } public void setRollNo(String rollNo) { this.rollNo = rollNo; } public String getBranch() { return branch; } public void setBranch(String branch) { this.branch = branch; } public String getSemester() { return semester; } public void setSemester(String semester) { this.semester = semester; } } |
showstudent.jsp
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<%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib prefix="s" uri="/struts-tags" %> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Student Details</title> </head> <body> <h1>Student Detail</h1> Name: <s:property value="name"/><br/> Roll No: <s:property value="rollNo"/><br/> Branch: <s:property value="branch"/><br/> Semester: <s:property value="semester"/><br/> </body> </html> |
web.xml
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<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <session-config> <session-timeout> 30 </session-timeout> </session-config> <welcome-file-list> <welcome-file>pages/addstudent.jsp</welcome-file> </welcome-file-list> </web-app> |
Output
Getting Ip address of client
When user submit a form along with form data we can get Ip address of client.
Lets see one simple program to demonstrate this
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public class Post extends ActionSupport{ public String execute(){ HttpServletRequest request = ServletActionContext.getRequest(); String ipAdd = request.getHeader("X-FORWARDED-FOR"); if (ipAdd == null) { ipAdd = request.getRemoteAddr(); } System.out.pritln("Ip address of requested client is "+ipAdd); return SUCCESS; } } |
Redirect action to another Url
We want to redirect a action to another website or url.
for that syntax is used
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<result name="success" type="redirect">${url}</result> |
type=”redirect” is used to redirect this action to specified url.
here url is a variable in action class with getter and setter methods.
We are getting url value from jsp page.to get url value in struts.xml we used ${url}.
First.jsp
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<%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib uri="/struts-tags" prefix="s" %> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>First JSP Page</title> </head> <body> <h1>Redirect To Other Web site</h1> <s:form action="SendRedirect"> <s:select name="url" list="#{'http://www.facebook.com':'facebook', 'http://www.google.com':'Google', 'http://www.tumblr.com':'Tumblr', 'http://www.twitter.com':'Twitter'}"/> <s:submit value="Click to Redirect"/> </s:form> </body> </html> |
Struts.xml
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<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="default" extends="struts-default"> <action name="SendRedirect" class="com.ebhor.RedirectAction" method="redirect"> <result name="success" type="redirect">${url}</result> </action> </package> </struts> |
RedirectAction.java
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package com.ebhor; import com.opensymphony.xwork2.ActionSupport; public class RedirectAction extends ActionSupport { private String url; public String redirect() { System.out.println("Redirect to "+getUrl()); return SUCCESS; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } } |
Output
html/jsp page response in ajax get method
We want to get an entire page as ajax response by using jquery get method.
Steps:
1) First create pages(FirstJsp.jsp and SecondJsp.jsp)
2) call jquery get method to get ajax response in one page(here FirstJsp.jsp to get SecondJsp.jsp)
3)Configure struts.xml file
Lets start with page creating
FirstJsp.jsp
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<%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib uri="/struts-tags" prefix="s" %> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>First JSP Page</title> <script type='text/javascript' src="js/jquery.min.js"></script> </head> <body> <h1>Get Html Page As Responser</h1> <s:submit id="fetch" value="fetch" /> <div id="content"></div> <script> $(document).ready(function() { $(document).on("click", "#fetch", function(f) { f.preventDefault(); $.get("getContent", function(data) { $("#content").html(data); }); }); }); </script> </body> </html> |
SecondJsp.jsp
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This is Second Jsp Page</h1> <p> <ol> <li>Create jsp/html files</li> <li>Call ajax method to get response</li> <li>Set configuration file and respond with html/jsp file which you want to get on success</li> </ol> </p> |
Struts.xml
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<package name="default" extends="struts-default"> <action name="getContent"> <result name="success">SecondJsp.jsp</result> </action> </package> |
Output
Flying saucer with struts2
Flying Saucer takes XML or XHTML and applies CSS 2.1-compliant stylesheets to it, in order to render to PDF (via iText), images, and on-screen using Swing or SWT. The library implements (basically) the entirety of CSS 2.1 and aims to be fully compliant with the W3C specification; it includes a small handful of CSS 3 features.[source]
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package com.ebhor; import static com.opensymphony.xwork2.Action.SUCCESS; import com.opensymphony.xwork2.ActionSupport; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.io.StringBufferInputStream; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.xhtmlrenderer.pdf.ITextRenderer; public class PdfAction extends ActionSupport { private InputStream inputStream = null; public String DownloadPdf() { Document doc = null; try { DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); doc = builder.parse(new StringBufferInputStream(new HtmlFormats().htmlContent().toString())); ITextRenderer renderer = new ITextRenderer(); renderer.setDocument(doc, null); ByteArrayOutputStream bos = new ByteArrayOutputStream(); renderer.layout(); renderer.createPDF(bos); setInputStream(new ByteArrayInputStream(bos.toByteArray())); } catch (Exception e) { System.out.println("Exception " + e); } return SUCCESS; } public InputStream getInputStream() { return inputStream; } public void setInputStream(InputStream inputStream) { this.inputStream = inputStream; } } public class HtmlFormats { public StringBuffer htmlContent() { StringBuffer sb = new StringBuffer("<html><body> " + "<h2>Hello Friends</h2>" + "</body></html>"); return sb; } |
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<action name="DownloadPdf" class="com.ebhor.PdfAction" method="DownloadPdf"> <result name="success" type="stream"> <param name="contentDisposition">attachment;filename=Invoice.pdf</param> <param name="contentType">application/pdf</param> <param name="inputName">inputStream</param> <param name="bufferSize">1024</param> </result> <result name="input">/pages/reports/SingleBill.jsp</result> <result name="login">/pages/login.jsp</result> <result name="UNAUTHORIZED">/pages/Unautho.jsp</result> </action> |
In jsp page
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<a href="DownloadPdf">Download</a> |
Setting page theme simple
In particular jsp page we can set that page simple by including following tags
In jsp page
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<s:set name="theme" value="'simple'" scope="page" /> |
This will set page theme simple.
It will not generate struts2 tabular format user has to create his own format while using theme simple.
Example:
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<s:set name="theme" value="'simple'" scope="page" /> <%@taglib uri="/struts-tags" prefix="s"%> <!DOCTYPE html> <html> <head> <title>Test page</title> </head> <body> <s:textfield name="name" id="name"/> <s:textarea name="address" id="address"/> </body> </html> |
Excel file download in Struts2 using apache POI
Apache POI is project by Apache Software Foundation. It provides the Java API for Microsoft Documents.
You can find more about apache POI . You can also download apache POI from here.
Here we are explaining how to export data from struts2 action to xml file.
For that we are using apache poi.
We have included following jar files in lib folder
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import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Row; public class ProductDetailsAction extends ActionSupport { private long barCode;//bardoce private long productName; private ArrayList productList; private InputStream inputStream; /getter and setter of all fields public String Download() { ProductDetailsAction pda=new ProductDetailsAction(); pda.setBarCode(111); pda.setProductName("Lux"); setProductList(pda); pda.setBarCode(112); pda.setProductName("Liril"); setProductList(pda); pda.setBarCode(113); pda.setProductName("Hamam"); setProductList(pda); HSSFWorkbook myWorkBook = new HSSFWorkbook(); HSSFSheet mySheet = myWorkBook.createSheet(); HSSFRow myRow = null; int rowNum = 1; Row header = mySheet.createRow(0); header.createCell(0).setCellValue("BARCODE"); header.createCell(1).setCellValue("productName"); for (ProductDetailsAction s : getProductList()) { myRow = mySheet.createRow(rowNum++); Row dataRow = mySheet.createRow(rowNum++); dataRow.createCell(0).setCellValue(s.getBarCode()); dataRow.createCell(1).setCellValue(s.getProductName()); } try { ByteArrayOutputStream baos = new ByteArrayOutputStream(); myWorkBook.write(baos); setInputStream(new ByteArrayInputStream(boas.toByteArray())); } catch (Exception e) { e.printStackTrace(); } return SUCCESS; } |
In struts.xml
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attachment;filename=report.xlsapplication/vnd.ms-excelinputStream 1024 |
In jsp
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Download |
Showing Arraylist values using Struts2 Json and JQuery
I am having comment class, I want to show its property values to jsp page using json
Comments.java
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package example; import java.sql.Timestamp; public class Comments { private int id; private String name; private String pic; private String comment; private Timestamp commentDate; public String getComment() { return comment; } public void setComment(String comment) { this.comment = comment; } public Timestamp getCommentDate() { return commentDate; } public void setCommentDate(Timestamp commentDate) { this.commentDate = commentDate; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPic() { return pic; } public void setPic(String pic) { this.pic = pic; } } |
ListJson assigning values for comments.java. Here we fetch value of commentList and totalcomments value in our jsp page.
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package example; import com.opensymphony.xwork2.ActionSupport; import java.util.ArrayList; public class ListJson extends ActionSupport { private ArrayList commentList = new ArrayList<comments>(); private long totalComments; public String execute() { comments c = new comments(); c.setId(1); c.setName("Manish"); c.setComment("Hi how are you"); c.setPic("a.jpg"); c.setCommentDate(null); comments d = new comments(); d.setId(2); d.setName("Nita"); d.setComment("I am fine"); d.setPic("b.jpg"); d.setCommentDate(null); commentList.add(c); commentList.add(d); setTotalComments(commentList.size()); System.out.println("In action"); return SUCCESS; } public long getTotalComments() { return totalComments; } public void setTotalComments(long totalComments) { this.totalComments = totalComments; } public ArrayList getCommentList() { return commentList; } public void setCommentList(ArrayList commentList) { this.commentList = commentList; } } |
Struts.xml
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<package name="example1" extends="struts-default, json-default"> <action name="fetchComments" class="example.ListJson"> <result type="json"></result> </action> </package> |
In Jsp page
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<%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>JSP Page</title> <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script> </head> <body> <input type="button" id="button1" value="Submit"> <div class="total-comments"></div> <div class="allcomments"> </div> <script> $("#button1").click(function() { $.getJSON('fetchComments', function(data) { $(".total-comments").html("<h2>Total comments are "+data.totalComments+"</div>"); var msg; $.each(data.commentList, function(j) { msg='<div class="comment">'; msg+= '<div class="id">'+data.commentList[j].id+'</div>' msg+= '<div class="name">'+data.commentList[j].name+'</div>'; msg+= '<div class="image">'+data.commentList[j].pic+'</div>' msg+= '<div class="image">'+data.commentList[j].comment+'</div>' msg+= '<div class="commentDate">'+data.commentList[j].commentDate+'</div>' msg+='</div>'; $(".allcomments").append(msg); }); return false; }); }); </script> </body> </html> |
Struts2 Json and Jquery Example
Here we will fetch a action variable’s value in jsp page using JSON and jquery
Here I am using struts 2.3.4 for that we have to include struts-2-json-plugin-2.3.4.jar in class path or include it to your lib folder if you are using any IDE.
Action class
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package example; import com.opensymphony.xwork2.ActionSupport; public class HelloJSON extends ActionSupport { private String name; private String welcomeMessage; @Override public String execute() { System.out.println("Inside Action name is " + getName()); setWelcomeMessage("Welcome " + getName() + "!!"); System.out.println(getWelcomeMessage()); return SUCCESS; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getWelcomeMessage() { return welcomeMessage; } public void setWelcomeMessage(String welcomeMessage) { this.welcomeMessage = welcomeMessage; } } |
In struts.xml we have to extend json-default and result type shold be json. No need to specify path inside <result &rt;</result<
struts.xml
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<package name="example1" extends="json-default"> <action name="test" class="example.HelloJSON"> <result type="json"></result> </action> </package> |
Jsp page
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<%@ page contentType="text/html; charset=UTF-8" %> <html> <head> <title><s:text name="Hello JSON/></title> <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script> </head> <body> <form action="" id="myForm"> <label for="name">Enter Your Name</label> <input name="name" id="name"> <input type="button" id="button1" value="Submit"> </form> <div class="result"></div> <script> $("#button1").click(function() { var name1=$("#name").val(); $.getJSON('test', { name: name1}, function(data) { $('.result').html(data.welcomeMessage); return false; }); }); </script> </body> </html> |
Here we are using $.getJSON(‘test’, { name: name1}, function(data) method to fetch json data.