Export Crystal Report to PDF by using Java Program

Here I am using some crystal report which will connect to database and fetch the data to create report.
It will expect username and password from the calling function.
Also it will expect some parameter(Name) from the calling function. Below is the code
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Date;
import com.crystaldecisions.sdk.occa.report.application.ReportClientDocument;
import com.crystaldecisions.*;
import com.crystaldecisions.sdk.occa.report.data.Connections;
import com.crystaldecisions.sdk.occa.report.data.Fields;
import com.crystaldecisions.sdk.occa.report.data.IConnection;
import com.crystaldecisions.sdk.occa.report.data.ParameterField;
import com.crystaldecisions.sdk.occa.report.exportoptions.ReportExportFormat;
public [...]

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Difference between Struts and Spring Framework,

Sl. No

Struts

Spring

1

Struts is a web framework

Spring is an application
framework

2

Using MVC pattern

spring MVC is one of the
modules

3

Hard code to use applications
like hibernate, JDBC

Inbuilt hibernate, JDBC etc

4

Struts allows only JSP

Support JSPs, Velocity,
Free maker etc.,

5

Struts is heavy weight

Spring is light weight

6

Struts is tightly coupled

Spring is loosely coupled.

7

Excellent support for
Tag Library

Not that Much

8

Easy to integrate with other
client side technologies

Not [...]

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Spring Framework

Spring is standard in lightweight enterprise application framework. Layered architecture, which allows you to be selective about which of its components you use there are seven modules in Spring Frame work
I>  Spring Core:
Uses IOC pattern to separate the application configuration with dependency specification from the actual application code.
IOC (Inversion of control)

No creation of object but [...]

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Groovy and Grails

Groovy…

is an agile and dynamic language for the Java Virtual Machine
builds upon the strengths of Java but has additional power features inspired by languages like Python, Ruby and Smalltalk
makes modern programming features available to Java [...]

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Example : MultiActionController in Spring

1> Controller Contains
public class testController extends MultiActionController {
public ModelAndView action_name1(HttpServletRequest          httpServletRequest,HttpServletResponse httpServletResponse) {
System.out.println(“In Action1″);
return new ModelAndView(“view1″, “date”,”date”);

}

public ModelAndView action_name2(HttpServletRequest httpServletRequest,HttpServletResponse httpServletResponse) {
System.out.println(“In Action 2″);
return new ModelAndView(“view2″, “date”,”date”);

}
}

2> View contains
<a href=”test.htm?action=action_name1″ >Go to Action1 </a> |
<a href=”test.htm?action=action_name2″ >Go to Action2 </a>
3> Change in Application-servlet.xml
<bean name=”/test.htm” class=”testController”>
<property name=”methodNameResolver”>
<ref bean=”paramResolver”/>
</property>
</bean>
<bean id=”paramResolver” class=”org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver”>
<property name=”paramName”><value>action</value></property>
</bean>
Simple Way:
1> Controller Contains
same as above

2> [...]

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