Shikha Dhawan

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since Jun 07, 2011

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Recent posts by Shikha Dhawan

Data not get displayed in struts2 - jquery grid

I'm using struts2-jquery grid.

gridmodel in my action class is getting updated correctly. But, nothing is getting displayed on the grid.

struts.xml

userList.jsp

<%@ page contentType="text/html; charset=UTF-8"%> <%@ taglib prefix="s" uri="/struts-tags"%> <%@ taglib prefix="sj" uri="/struts-jquery-tags"%> <%@ taglib prefix="sjg" uri="/struts-jquery-grid-tags"%> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head> <sj:head jqueryui="true" jquerytheme="redmond"/>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Style-Type" content="text/css" />
</head> <body> <h3>Application Users</h3> <s:actionerror/> <s:actionmessage/> <s:url id="remoteurl" action="/searchAndUpdate/listUsers"/>
<sjg:grid
id="gridtable" caption="Application Users" dataType="json" href="%{remoteurl}" pager="true" gridModel="gridModel" rowList="10,15,20" rowNum="15" rownumbers="true" resizable="true" viewrecords="true"
>
<sjg:gridColumn name="id" index="id" title="Id" formatter="integer" sortable="false"/> <sjg:gridColumn name="userName" index="userName" title="User Name" sortable="true"/> <sjg:gridColumn name="fullName" index="fullName" title="Full Name" sortable="false"/> <sjg:gridColumn name="email" index="email" title="EMail" sortable="false"/>
</sjg:grid>
</body> </html>

ListUsers.java

package com.pilot.web.action;
import java.util.ArrayList?; import java.util.Collections; import java.util.List; import java.util.Map;
import com.opensymphony.xwork2.ActionSupport?; import com.oxxo.pilot.backend.jdbc.dao.impl.User;
public class ListUsers? extends ActionSupport? {
private static final long serialVersionUID = 1L; private List<User> gridModel; //get how many rows we want to have into the grid - rowNum attribute in the grid private Integer rows = 0; //Get the requested page. By default grid sets this to 1. private Integer page = 0; // Your Total Pages private Integer total = 0; // All Records private Integer records = 0; // sorting order - asc or desc private String sord; // get index row - i.e. user click to sort. private String sidx; public String getAllApplicationData() {
List<User> users = userListFromDb(); if (users != null && getSord() != null
&& getSord().equalsIgnoreCase("asc")) {
Collections.sort(users, null);
} if (getSord() != null && "desc".equalsIgnoreCase(getSord())) {
Collections.sort(users, null); Collections.reverse(users);
} setRecord(users.size()); int to = (getRows() getPage()); if (to > getRecord())
to = getRecord();
setGridModel(users); setTotal((int) Math.ceil((double) getRecord() / (double) getRows())); System.out.println("Total is : " + getTotal()); System.out.println("Record is : " + getRecord()); for(User user: users){
System.out.println(user.getUserName() + ", " + user.getFullName() + ", " + user.getEmail());
} if (hasActionMessages() || hasActionErrors()) {
return INPUT;
} return SUCCESS;
}
private List<User> userListFromDb() {
// MOCKED List for now
List<User> users = new ArrayList?<User>(); User user1 = new User(); user1.setId(1); user1.setUserName("user1"); user1.setFullName("User ABC"); user1.setEmail("user1@email.com");
User user2 = new User(); user2.setId(1); user2.setUserName("user2"); user2.setFullName("User DEF"); user2.setEmail("user2@email.com");
users.add(user1); users.add(user2); return users; // TODO FETCH LIST OF USERS FROM DB
}
public String getJSON() {
System.out.println("here in getJSON"); return getAllApplicationData();
}
public Integer getRows() {
return rows;
}
public void setRows(Integer rows) {
this.rows = rows;
}
public Integer getPage() {
return page;
}
public void setPage(Integer page) {
this.page = page;
}
public Integer getTotal() {
return total;
}
public void setTotal(Integer total) {
this.total = total;
}
public Integer getRecord() {
return records;
}
public void setRecord(Integer records) {
this.records = records; if (this.records > 0 && this.rows > 0) {
this.total = (int) Math.ceil((double) this.records
/ (double) this.rows);
} else {
this.total = 0;
}
} public List<User> getGridModel() {
return gridModel;
} public void setGridModel(List<User> gridModel) {
this.gridModel = gridModel;
} public String getSord() {
return sord;
} public void setSord(String sord) {
this.sord = sord;
} public String getSidx() {
return sidx;
} public void setSidx(String sidx) {
this.sidx = sidx;
} public void setSearchField(String searchField) { }
public void setSearchString(String searchString) { }
public void setSearchOper(String searchOper) { }
public void setLoadonce(boolean loadonce) { } public void setSession(Map<String, Object> session) { }
}

I did refer to the solution on http://stackoverflow.com/questions/6411589/struts2-jquery-grid-data-not-load?answertab=active#tab-top

But that solution did not work. Instead of data getting displayed on the grid, it prompted to save the file & that file contained the following info:

{"JSON":"success","gridModel":[{"email":"user1@email.com","fullName":"User ABC","id":1,"userName":"user1"},{"email":"user2@email.com","fullName":"User DEF","id":1,"userName":"user2"}],"page":0,"record":2,"rows":0,"sidx":null,"sord":null,"total":2147483647}

As per my understanding row & page are automatically handled by the plugin. But as per the json data above they are not getting incremented. Hard-coded them to the size of the gridmodel and the json data I got is:

{"JSON":"success","allApplicationData":"success","gridModel":[{"email":"user1@email.com","fullName":"User ABC","id":1,"userName":"user1"},{"email":"user2@email.com","fullName":"User DEF","id":1,"userName":"user2"}],"page":1,"record":2,"rows":2,"sidx":null,"sord":null,"total":1}

Thanks,
Shikha

12 years ago

Struts

Struts2 iterator

debraj mallick wrote:since i am having text boxes of same name, so in action i will get a String array with same name.

Hi,
Your solution worked. But got a better way around.

While declaring the iterator :

Try . It worked.

Thanks Shikha

12 years ago

Struts

Issue in struts-jquery tag

Hi,

I'm using <sj:datepicker> tag as follows :

My pom.xml declares the related dependency as:

But, the calender/date picker is not getting displayed. Instead it is being displayed as a textfield on the browser.

What could be the issue?

Thanks,
Shikha

12 years ago

Struts

Null Pointer Exception in StrutsActionProxy on running application

Hi,

When I run my web application (struts2) , the index page is displayed correctly. When I click the button on the index page, the following error occurs:

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

java.lang.NullPointerException
org.apache.struts2.impl.StrutsActionProxy.getErrorMessage(StrutsActionProxy.java:69)
com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39)
com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:500)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:434)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.35 logs.

I'm not able to understand the reason. I'm new to web app development, please help..

Struts.xml :

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

<constant name="struts.i18n.reload" value="true" />
<constant name="struts.devMode" value="true" />
<constant name="struts.configuration.xml.reload" value="false" />
<constant name="struts.custom.i18n.resources" value="global" />
<constant name="struts.action.extension" value="action" />
<constant name="struts.serve.static" value="true" />
<constant name="struts.serve.static.browserCache" value="false" />
<constant name="actionPackages" value="com.oxxo.pilot.web.action" />
<package name="default" namespace = "/" extends="struts-default">
<action name="test" class="com.oxxo.pilot.web.action.SearchProductAction" method="getProductsList">
<result name = "input">/jsp/fail.jsp</result>
<result name = "success">/jsp/input.jsp</result>
</action>
<action name="search" class="com.oxxo.pilot.web.action.SearchProductAction" method="searchProductPromotionsList">
<result name = "input">/jsp/fail.jsp</result>
<result name = "success">/jsp/input.jsp</result>
</action>
<action name="update" class="com.oxxo.pilot.web.action.SearchProductAction" method="updateProductPromotions">
<result name = "input">/jsp/fail.jsp</result>
<result name = "success">/jsp/input.jsp</result>
</action>
</package>
</struts>

POM.xml:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>oxxo</groupId>
<artifactId>pilot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>pilot</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.3.1.1</version>
</dependency>
<dependency>
<groupId>com.jgeppert.struts2.jquery</groupId>
<artifactId>struts2-jquery-plugin</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-junit-plugin</artifactId>
<version>2.3.1.1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<type>jar</type>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>

Thanks,
Shikha

12 years ago

Struts

Not able to start Tomcat

William Brogden wrote:The information you need is in the window that opened and then closed when an error was thrown.

Change the last executable line of startup bat to use "run" instead of "start" - this will execute the catalina.bat in the same window so you can see the error.

Bill

Hi Bill,

Thanks

I changed the exectable's last statement.

Got the following information:
java.util.logging.ErrorManager: 4: Unable to create [C:\apache-tomcat-7.0.23" -D
catalina.home=C:\apache-tomcat-7.0.23"\logs]
java.util.logging.ErrorManager: 4: Unable to create [C:\apache-tomcat-7.0.23" -D
catalina.home=C:\apache-tomcat-7.0.23"\logs]
java.util.logging.ErrorManager: 4: Unable to create [C:\apache-tomcat-7.0.23" -D
catalina.home=C:\apache-tomcat-7.0.23"\logs]
java.util.logging.ErrorManager: 4: Unable to create [C:\apache-tomcat-7.0.23" -D
catalina.home=C:\apache-tomcat-7.0.23"\logs]
Jan 21, 2012 11:09:59 AM org.apache.catalina.startup.Bootstrap initClassLoaders
SEVERE: Class loader creation threw exception
java.io.IOException: The filename, directory name, or volume label syntax is inc
orrect
at java.io.WinNTFileSystem.canonicalize0(Native Method)
at java.io.Win32FileSystem.canonicalize(Win32FileSystem.java:396)
at java.io.File.getCanonicalPath(File.java:559)
at java.io.File.getCanonicalFile(File.java:583)
at org.apache.catalina.startup.ClassLoaderFactory.createClassLoader(Clas
sLoaderFactory.java:171)
at org.apache.catalina.startup.Bootstrap.createClassLoader(Bootstrap.jav
a:150)
at org.apache.catalina.startup.Bootstrap.initClassLoaders(Bootstrap.java
:91)
at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:227)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)

Issue was CATALINA_HOME was set to C:\apache-tomcat-7.0.23\bin & not to C:\apache-tomcat-7.0.23.

Thanks.

//Shikha

12 years ago

Tomcat

Struts2 iterator

debraj mallick wrote:hi Shikha Dhawan,

i didn't find any good solution yet, at present what i am doing is - in action i have
private String[] name; private String[] address; private String[] age; private String[] mobile; getter and setters of the above
once the user hits the submit button, i am getting all the values which solves my problem but still don't know how to retrieve / get the lists bean.

HI Debraj,

You mean the name is of type String & an attribute of Student. Still it maps with the String[] name;

Thanks,
Shikha

12 years ago

Struts

Struts2 iterator

Hi,

I am also facing the same issue. Is there any other way of doing this?

Thanks,
Shikha

12 years ago

Struts

Not able to start Tomcat

Hi,

I'm using Windows 7 64 bit machine & having Java 1.6.

I am not able to start tomcat. I just downloaded the tomcat, unzipped the file & set the environment variables.

When I run startup.bat from command prompt, it shows the following on my command prompt:

C:\apache-tomcat-7.0.23\bin>startup.bat
Using CATALINA_BASE: "C:\apache-tomcat-7.0.23\"
Using CATALINA_HOME: "C:\apache-tomcat-7.0.23\"
Using CATALINA_TMPDIR: "C:\apache-tomcat-7.0.23\\temp"
Using JRE_HOME: "C:\Program Files\Java\jdk1.6.0_25\"
Using CLASSPATH: "C:\apache-tomcat-7.0.23\\bin\bootstrap.jar;C:\apache-tom
cat-7.0.23\\bin\tomcat-juli.jar"

The Tomcat window opens for a few milliseconds n get closed. No information is being logged.

Please guide me. I am not able to figure out whats missing. Let me know if any other information is required.

12 years ago

Tomcat

Difference between a web server & application server.

Thanks Mohamed !!

13 years ago

Servlets

Difference between a web server & application server.

Hi,

M new to web application development.

Could any1 please tell me d difference between a web-server & application server citing examples from real world?

13 years ago

Servlets