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Spring Framework |
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You will get the message ‘Query OK, 0
rows affected’.
Now we have created a table in mysql
database with two fields: Name and City.
Setting up the environment variables: As the entire Spring Framework is included
in spring.jar. We use it to run our
examples.
1 Copy spring.jar from spring1.2.9\dist
folder to the working folder
(springdemo) , mysql-connectorjava-
3.1.6-bin.jar, also copy
commons-logging.jar from apachetomcat-
6.0.10 to the working
directory.
2 Set path for jdk1.4.2 and above
versions only
3. Now set the classpath as shown:
D:\>springdemo >set
classpath=D:\springdemo;
D:\springdemo\spring.jar;
D:\springdemo\commons-logging.jar;
D:\springdemo\ mysql-connector-java-
3.1.6-bin.jar;
4. For a typical Spring Application we need
the following files:
i. An interface that defines the
functions.
ii. An Implementation that contains
properties, its setter and getter
methods, functions etc.,
iii. A XML file called Spring
configuration file.
iv. Client program that uses the function.
Create the following files
1. datacon.java
2. dataconimpl.java
3. datacon.xml
4. helloclient.java |
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1. D:\springdemo\ datacon.java
import javax.sql.*;
public interface datacon{
public DataSource dbcon();
}
2. D:\springdemo\ dataconimpl.java
import
org.springframework.jdbc.core.*;
import
org.springframework.jdbc.datasource.*;
import org.springframework.jdbc.object.*;
import
org.springframework.jdbc.support.*;
import javax.sql.*;
public class dataconimpl implements
datacon{
private DataSource dataSource;
public void setDataSource(DataSource ds)
{
dataSource = ds;
}
public DataSource dbcon() {
return dataSource;
}}
3. D:\springdemo\datacon.xml
<? xml version=”1.0" encoding=”UTF-
8"?><!DOCTYPE beans PUBLIC “-//
SPRING//DTD BEAN//EN””http://
www.springframework.org/dtd/springbeans.
dtd”><beans><bean
id=”dataSource”
class=”org.springframework.jdbc.datasource.
DriverManagerDataSource”>
<property name=”driverClassName”>
<value>com.mysql.jdbc.Driver</value>
</property>
<property name=”url”>
<value>
jdbc:mysql://localhost:3333/test
</value>
</property>
<property name=”username”>
<value>root</value>
</property> |
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Sept 2007 | Java Jazz Up | 56 |
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