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gopal krishnan

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since Dec 17, 2007

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Recent posts by gopal krishnan

localhost not being resolved after tomcat startup, displays weird glassfish error

I tried to locate "http://localhost:8080" in the browser, but i am getting the message the server is start up using glass fisher, i had stopped it, event uninstalled it restarted the PC, but still getting the below message. any help on this.. i am getting this problem today, i was using it on last Friday and it was working without any issues.

Actually there seems no glass fish server, but it pretends to be the server.

message

Glass Fish Server 3.1.2 Your server is now running

12 years ago

database connection Spring framework unresolved

hey the problem got resovled, after i had modified, the following..

1) applicationContext with mapping for the bean "productManager" with ref productDao
2) ProductManager interface with new method call getProducts(), then implemenent in the SimpleProductManager and which call the ProductDao.getProducts(), where the sql query is being defined.

12 years ago

database connection Spring framework unresolved

thanks, i had changed the getter method now, but still getting the same error...

error
----
Error occurred during deployment: Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.ExceptionInInitializerError. Please see server.log for more details.

also i had modified the Controller and springapp-servlet.xml as below..

springapp-servlet.xml
---------------------------

<bean name="/hello.htm" class="HelloController">
<property name="simpleProductManager" ref="simpleProductManager"/>
</bean>

HelloController.java
-------------------------

12 years ago

database connection Spring framework unresolved

i had earlier created the spring framework, then replaced with the database connection, but there is problem in creating the beans.

also receiving the below error during the deployment.

Error

deploy?DEFAULT=C:\Users\gopc\Documents\NetBeansPro jects\HelloSpringJDBC\build\web&name=HelloSpringJD BC&contextroot=/HelloSpringJDBC&force=true failed on GlassFish Server 3.1.2 Error occurred during deployment: Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'productManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyExcep tion: Invalid property 'productDao' of bean class [SimpleProductManager]: Bean property 'productDao' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?. Please see server.log for more details. C:\Users\gopc\Documents\NetBeansProjects\HelloSpri ngJDBC\nbproject\build-impl.xml:1029: The module has not been deployed. See the server log for details.

Source

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<bean id="externalDataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource" scope="singleton" destroy-method="close">
<property name="driverClassName" value="sun.jdbc.odbc.JdbcOdbcDriver"/>
<property name="url" value="jdbc:odbc:;
DRIVER=Microsoft Access Driver (*.mdb, *.accdb);DBQ=C://Users//gopc//Documents//odbc_sql.accdb"/>
<property name="username" value=""/>
<property name="password" value=""/>
</bean>
<bean id="productManager" class="SimpleProductManager">
<property name="productDao" ref="productDao"/>
</bean>
<bean id="productDao" class="JdbcProductDao">
<property name="dataSource" ref="externalDataSource"/>
</bean>
</beans>

spirngapp-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basename" value="messages"/>
</bean>
<bean name="/hello.htm" class="HelloController">
<property name="productManager" ref="productManager"/>
</bean>

<bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
<property name="defaultLocale" value="en_US"/>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:viewClass="org.springframework.web.servlet.view.JstlView"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
</beans>

JdbcProductDao.java

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
import org.springframework.jdbc.core.simple.ParameterizedRowMapper;
import org.springframework.jdbc.core.simple.SimpleJdbcDaoSupport;
public class JdbcProductDao extends SimpleJdbcDaoSupport implements ProductDao {
protected final Log logger = LogFactory.getLog(getClass());
public List<Product> getProductList() {
logger.info("Getting products!");
List<Product> products = getSimpleJdbcTemplate().query(
"select id, description, price from products",
new ProductMapper());
return products;
}
public void saveProduct(Product prod) {
logger.info("Saving product: " + prod.getDescription());
int count = getSimpleJdbcTemplate().update(
"update products set description = :description, price = :price where id = :id",
new MapSqlParameterSource().addValue("description", prod.getDescription())
.addValue("price", prod.getPrice())
.addValue("id", prod.getId()));
logger.info("Rows affected: " + count);
}
private static class ProductMapper implements ParameterizedRowMapper<Product> {
public Product mapRow(ResultSet rs, int rowNum) throws SQLException {
Product prod = new Product();
prod.setId(rs.getInt("id"));
prod.setDescription(rs.getString("description"));
prod.setPrice(new Double(rs.getDouble("price")));
return prod;
}
}
}

SimpleProductManager.java

HelloController.java

import java.util.Date;
import java.util.Map;
import java.util.HashMap;
import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.io.IOException;
public class HelloController implements Controller {
private ProductManager productManager;
protected final Log logger = LogFactory.getLog(getClass());
/*
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
logger.info("Returning hello view");
String now = ( new Date().toString());
logger.info("time now:"+ now);
//return new ModelAndView("hello");
//return new ModelAndView("WEB-INF/jsp/hello","now",now);
//decouple the view from the controller
return new ModelAndView("hello","now",now);
}
*/
//Writing some business logic in the controller
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
String now = (new java.util.Date()).toString();
logger.info("returning hello view with " + now);
Map<String, Object> myModel = new HashMap<String, Object>();
myModel.put("now", now);
myModel.put("products", this.productManager.getProductDao());
return new ModelAndView("hello", "model", myModel);
}
public void setProductManager(ProductManager productManager)
{
this.productManager = productManager;
}
}

12 years ago

could not convert the xml to json using java

yes the problem is resolved.

12 years ago

XML and Related Technologies

could not convert the xml to json using java

Thanks for your reply, it's just the order of parsing in the xml to json being changed..

12 years ago

XML and Related Technologies

Warnings with message resource

i got the problem being resolved..

following are the step's i did it..

1) in the springapp-context.xml (dispacher ), i add the below

<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basename" value="messages"/>
</bean>

2) second, i placed the messages.properties file inside the /WEB-INF/classes. make sure that after clean and deploy the file stills exits.

12 years ago

could not convert the xml to json using java

i have the xml file, i need to convert into the json. the json output is the partial convert of the xml, not whole xml is converted..

Reason you can find the output of the json, only partial is being converted. remaining portion is omitted.

OUTPUT
============

INPUT XML FILE
=============

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package javasample1;
//import net.sf.json.JSON;
//import net.sf.json.JSONObject;
//import net.sf.json.xml.XMLSerializer;
import org.json.JSONObject;
import org.json.JSONException;
import org.json.XML;
import java.io.*;
/**
*
* @author gopc
*/
public class ConvertXMLtoJSON{
public static void main(String[] args) throws Exception
{
try
{
File file = new File ("C:\\Users\\gopc\\Documents\\NetBeansProjects\\JavaSample1\\src\\javasample1\\Sample1.xml");
InputStream inputStream = new FileInputStream(file);
StringBuilder builder = new StringBuilder();
int ptr = 0;
while ((ptr = inputStream.read()) != -1 )
{
builder.append((char) ptr);
}
String xml = builder.toString();
JSONObject jsonObj = XML.toJSONObject(xml);
System.out.println(jsonObj);
/*
String xmlString = "<?xml version=\"1.0\"?><ASF_Service_ResponseVO id=\"1\"><service type=\"String\">OnboardingV2</service><operation type=\"String\">start_onboarding_session</operation><requested_version type=\"String\">1.0</requested_version><actual_version type=\"String\">1.0</actual_version><server_info type=\"String\">onboardingv2serv:start_onboarding_session&CalThreadId=85&TopLevelTxnStartTime=13b40fe91c4&Host=L-BLR-00438534&pid=3564</server_info><result type=\"Onboarding::StartOnboardingSessionResponse\" id=\"2\"><onboarding_id type=\"String\">137</onboarding_id><success type=\"bool\">true</success></result></ASF_Service_ResponseVO>";
JSONObject jsonObj = XML.toJSONObject(xmlString);
System.out.println(jsonObj.toString());
*/
}
catch(Exception e)
{
e.printStackTrace();
}
}
}

12 years ago

XML and Related Technologies

could not able to set the property from the springapp-servlet.xml throws Failed to convert property

Thanks the ref has worked..

12 years ago

could not able to set the property from the springapp-servlet.xml throws Failed to convert property

i am trying to set the value from the springapp-servlet.xml and it fails to set the property by giving error message

Failed to convert property value of type [java.lang.String] to required type [ProductManager] for property 'productManager'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [java.lang.String] to required type [ProductManager] for property 'productManager': no matching editors or conversion strategy found

my code
---------

springapp-servlet.xml
---------------------------------

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<bean id="productManager" class="SimpleProductManager">
<property name="products">
<list>
<ref bean="product1"/>
<ref bean="product2"/>
</list>
</property>
</bean>
<bean id="product1" class="Product">
<property name="description" value="Chair"/>
</bean>
<bean id="product2" class="Product">
<property name="description" value="Desk"/>
</bean>
<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basename" value="messages"/>
</bean>
<bean name="/hello.htm" class="HelloController">
<property name="productManager" value="productManager"/>
</bean>

<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
</beans>
HelloController
-----------------

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author gopc
*/
import java.util.Date;
import java.util.Map;
import java.util.HashMap;
import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.io.IOException;
public class HelloController implements Controller {
private ProductManager productManager;
protected final Log logger = LogFactory.getLog(getClass());
//Writing some business logic in the controller
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
String now = (new java.util.Date()).toString();
logger.info("returning hello view with " + now);
Map<String, Object> myModel = new HashMap<String, Object>();
myModel.put("now", now);
myModel.put("products", this.productManager.getProducts());
return new ModelAndView("hello", "model", myModel);
}
public void setProductManager(ProductManager productManager)
{
this.productManager = productManager;
}
}

SimpleProductManager
------------------------------

12 years ago

org.springframework.beans.factory.CannotLoadBeanCl assException:

i am closing this, since i got after moving inside the WEB-INF/jsp with redirect.jsp and accessing using the http://localhost:8080/SpringApp/Redirect.htm

12 years ago

org.springframework.beans.factory.CannotLoadBeanCl assException:

Thanks for your email..

i created the webapplication project using the NETBEANS IDE..

when i tried to create the java file, it creates in the source package.. means (src/java).

12 years ago

org.springframework.beans.factory.CannotLoadBeanCl assException:

I had created the simple spring MVC controller, when i tried to execute i am getting the error.

Error Message:

org.springframework.beans.factory.CannotLoadBeanCl assException: Cannot find class [SpringApp.web.java.HelloController] for bean with name 'Redirect.jsp' defined in ServletContext resource [/WEB-INF/springapp-servlet.xml]; nested exception is java.lang.ClassNotFoundException: SpringApp.web.java.HelloController

This is my application structure.

SpringApp
----Web Pages
----META-INF
----WEB-INF
----springapp-servlet.xml
----web.xml
----Redirect.jsp
----index1.jsp
----Source Packages
----java
----HelloController.java

web.xml
--------

springapp-servlet.xml
----------------------

index1.jsp
---------

Redirect.jsp
------------

HelloController.java
-------------------

12 years ago

Default WebApplication development using beans not useful

Hi,

I tried with the web application development using the java beans, jsp , jdbc and it seems it does not seems to be useful.

reason: i need to create the java page and need to load the property and use it for the page...

Please find my codes attached for my simple application...

simple application name: log entry
brief: it updates the daily comments, and tracks the status completed or not, you can update and insert.. it..

Can you Please advice me the new, robust technology i can follow futher...

12 years ago

JDBC and Relational Databases

jdbc compilation error too weird

i'm not defining it.. using the existing..

12 years ago

JDBC and Relational Databases