prasad chowdary

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since Feb 18, 2012
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Recent posts by prasad chowdary

htmlform

<body>
<form name="customerform" action="/Customer/cs">
customerid:<input type="text" name="cid"/>
customerName:<input type="text" name="cname"/>
<input type="submit" value="store"/>
</form>
</body>

Servlet

import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.io.*;

public class CustomerServlet extends HttpServlet{

public void Service(HttpServletRequest req,HttpServletResponse res){
try{
System.out.println("1");
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","prasad","abc");
Statement stmt = conn.createStatement();
String id = req.getParameter("cid");
String name = req.getParameter("cname");
int result=stmt.executeUpdate("insert into customer values('"+id+"','"+name+"')");
PrintWriter out = res.getWriter();
out.write(id);
out.write(name);
conn.close();
}catch(Exception e){}
}
}


web.xml


<web-app>
<servlet>
<servlet-name>csservlet</servlet-name>
<servlet-class>CustomerServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>csservlet</servlet-name>
<url-pattern>/cs</url-pattern>
</servlet-mapping>
</web-app>
11 years ago
hi experts,

how to reverse a string without using built in methods.

eg)"john is a boy" and print "yob a si nhoj".



Thanks in advance, please send me the code its useful to me.
13 years ago
thanks piyush,

iam not getting any exception.
this is my main program go through it.



MyApp.java



package info.spring.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyApp {

public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
Student student = (Student)context.getBean("std");

student.details();
}

}
13 years ago
hi experts,

In my application im getting same results in autowiring(byname and byType) .please see my code.



Address.java

package info.spring.test;

public class Address {
private String city;
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
private String state;
}


Student.java

package info.spring.test;

public class Student {

private String name;
private Address address1;
private Address address2;
private int roll_No;


public int getRoll_No() {
return roll_No;
}

public void setRoll_No(int rollNo) {
roll_No = rollNo;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Address getAddress1() {
return address1;
}

public void setAddress1(Address address1) {
this.address1 = address1;
}

public Address getAddress2() {
return address2;
}

public void setAddress2(Address address2) {
this.address2 = address2;
}


public void details(){

System.out.println("student roll_no:"+roll_No);
System.out.println("Student name:"+name);
System.out.println("Temparary address:"+address1.getCity()+'\t'+address1.getState());
System.out.println("paramenent Address:"+address2.getCity()+'\t'+address2.getState());
}

}


config.xml

<bean id="std" class="info.spring.test.Student" autowire="byType">
<property name="name" value="sachin"></property>
<property name="roll_No" value="99"></property>

</bean>

<bean id="address1" class="info.spring.test.Address" >
<property name="city" value="hyd"></property>
<property name="state" value="ap"></property>
</bean>

<bean id="address2" class="info.spring.test.Address">
<property name="city" value="banglr"></property>
<property name="state" value="karnataka"></property>
</bean>
</beans>

output

getting both address objects


Thanks in Advance.


13 years ago
hi experts,

How do improve the performance of an Application.




Thanks in advance.
13 years ago
thanks mark,

i know thants work fine , why idref attribute is not working.
13 years ago
Thanks Maru,
now, i got a new exception

Exception:

Failed to convert property value of type 'java.lang.String' to required type 'info.spring.test.Address' for property 'address2'; nested exception is java.lang.IllegalStateException:
13 years ago
hello experts,


i am trying to inject objects through idref tag i got an exception

config.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

<bean id="std" class="info.spring.test.Student">
<property name="name" value="sachin"></property>
<property name="roll_No" value="99"></property>
<property name="address1" ref="addr1"></property>
<property name="address2" >
<idref="addr2"/>
</property>
</bean>

<bean id="addr2" class="info.spring.test.Address" name="addr2_alias">
<property name="city" value="hyd"></property>
<property name="state" value="ap"></property>
</bean>

<bean id="addr1" class="info.spring.test.Address">
<property name="city" value="banglr"></property>
<property name="state" value="karnataka"></property>
</bean>
</beans>

Exception

Element type "idref" must be followed by either attribute specifications, ">" or "/>"
13 years ago
hello experts,

In springs the terms Inversion of Control (ioc) and Dependency Injection are same.


thanks in advance.
13 years ago
thanks mangal,
13 years ago
























hi experts,

When will we go for autowiring in spring. I have a doubt in a spring bean if we have more no of objects its recomended.




Thanks in advance, Feedback me ASAP.









13 years ago
Thanks for reply,

In framework they mentioned, tell me both are acting as FrontControl.
13 years ago
hi experts,

i have a doubt in Struts2 They are saying Filter is a FrontControl Design pattern, i think Filter is also a servlet.
Struts1 ActionServlet is a FrontControl design pattern.

Thanks inAdvance,
13 years ago
hi, send your login page code.
13 years ago
hi Stefen,
thanks for your valuable suggestion.
13 years ago
JSP