Spring Tutorials

Spring Tutorial

Introduction of Spring Framework

Advantages and Disadvantages of Spring Framework

Features of Spring Framework

Basic concept of Spring Framework

Architecture of Spring Framework

Modules of Spring Framework

Goal of Spring Framework

Create Application of Spring without any IDE

Create Application of Spring in Eclipse IDE

Create Application of Spring in MYEclipse IDE

Important JAR of Spring Framework

IOC container in Spring Framework

Bean and Applicationcontext container in Spring Framework

Example of Spring BeanFactory Container in Spring Framework

Example of Spring ApplicationContext Container in Spring Framework

Bean in Spring Framework

Lifecycle of Bean in Spring Framework

Scope of Bean in Spring Framework

Autowiring in Spring Framework

Dependency Injection in Spring Framework

Constructor-based Dependency Injection Example in Spring Framework

Setter-based Dependency Injection Example in Spring Framework

Introduction of AOP in Spring Framework

Core concept and Goal of AOP in Spring Framework

AOP Proxies in Spring framework

XML Schema Based AOP in Spring Framework

AOP Xml based Configuration Example in Spring Framework

Example of Declaring AOP Advices in Spring Framework

AOP AspectJ Annotation with Example in Spring Framework

Declaring an aspect and pointcut using Annotation in Spring Framework

Declaring AOP Advices using Annotation Example in Spring Framework

DAO support in Spring Framework

Introduction of Spring JDBC Framework in Spring Framework

Introduction of Spring JdbcTemplate in Spring Framework

Example of Spring JdbcTemplate class in Spring framework

Example of Executing SQL statements in Spring Framework

Example of Executing DDL statements in Spring Framework

SQL Stored Procedure in Spring Framework

Example of NamedParameterJdbcTemplate in Spring Framework

Example of RowMapperJdbcTemplate in Spring Framework

Introduction of ORM Framework in Spring Framework

Integration of Spring with Hibernate in Spring Framework

Integration of Spring with JPA in Spring Framework

Introduction of Spring Expression Language (SpEL) in Spring Framework

Example of Spring Expression Language (SpEL) in Spring framework

Example of Spring EL in XML and Annotation in Spring Framework

Language Reference with SpEL in Spring Framework

Operators in Spring Expression Language(SpEL) in Spring Framework

Variable in Spring Expression Language(SpEL) in Spring Framework

Introduction of Spring Framework Transaction Management in Spring Framework

Spring Framework Transaction Abstraction

Spring Declarative Transaction Management in Spring Framework

Spring Programmatic Transaction Management in Spring Framework

Introduction of Spring OXM (Object XML Mapping) in Spring Framework

Integration of Spring with Jaxb Example in Spring framework

Example of Spring with Xstream in Spring Framework

Example of Spring with Castor in Spring Framework

Remote Method Invocation(RMI) in Spring Framework

Spring and RMI Integration with Example in Spring Framework

Example of Spring and Httpinvoker in Spring Framework

Example of Spring and Hessian in Spring Framework

Integration of Spring with JMS in Spring Framework

Introduction of Webservice in Spring Framework

Spring Web Services in Spring Framework

Web Services with Jax-WS in Spring framework

Exposing and Exporting servlet-based Web Services using JAX-WS in Spring Framework

Accessing Web Services using JAX-WS in Spring Framework

Introduction of JMS in Spring Framework

JMS Messaging Models in Spring Framework

Using Spring JMS in Spring Framework

Sending and Receiving a Message Using JMS API in Spring Framework

Introduction of JMX (Java Management Extension) in Spring Framework

Integrating Beans with JMX in Spring Framework

Creating a MBeanServer in Spring Framework

Introduction Java Mail with Spring in Spring Framework

Example of Java Mail with spring in Spring Framework

Introduction of EJB(Enterprise JavaBeans) in Spring Framework

Introduction of EJB(Enterprise JavaBeans) Integration in Spring Framework

Integration of Spring With Struts 2 Example in Spring Framework

Spring MVC

Spring MVC

DAO support in Spring
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Introduction of DAO

DAO stands for (Data access object) which is commonly used for database interaction.The Data Access Object (DAO) support in Spring is aimed at making it easy to work with data access technologies like JDBC, Hibernate, JPA or JDO in a consistent way.

This allows one to switch between the aforementioned persistence technologies fairly easily and it also allows one to code without worrying about catching exceptions that are specific to each technology.

DAOs exist to provide a means to read and write data to the database and they should expose this functionality through an interface by which the rest of the application will access them.

Setting up a DataSource in Spring

There are a number of ways to configure Spring to use DataSources. A simple method is to use spring beans to create a DataSource and inject it into a DAO / POJO class.

<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/Test"/>
<property name="username" value=""/>
<property name="password" value=""/>
</bean>
<bean id="empDao" class="com.r4r.EmployeeDao">
<property name="dataSource" ref="myDataSource" />
</bean>
EmployeeDao.java

The basic structure of EmployeeDao as given below.

package com.r4r
public class EmloyeeDao {
    DataSource ds;
    SimpleJdbcTemplate jdbcTemplate;
    public void setDataSource(DataSource ds) 
		{
        this.ds = ds;
        jdbcTemplate = new SimpleJdbcTemplate(ds);
        }
    /* DAO methods go here */
}

 

MainApp.java

The Spring DAO class can be instantiated using the following code

BeanFactory bf = new XmlBeanFactory( new ClassPathResource("config.xml") );
return (EmployeeDao) bf.getBean( "empDao" );
Running Query

The Spring DAO JDBC Template class provides an graceful method of running SQL queries and mapping the result set to Java objects with a less coding.

public Employee getEmployee(int id) throws SQLException {
return jdbcTemplate.queryForObject(
 "SELECT id, name FROM emp WHERE id = ?",
 new ParameterizedRowMapper<Company>() {
public Employee mapRow(ResultSet rs, int i) throws SQLException {
return new Employee( rs.getInt(1), rs.getString(2) );
}
},
id
);
}
Annotations used for configuring DAO

Data Access Objects (DAOs) or repositories provide exception translation is to use the @Repository annotation. This annotation also allows the component scanning support to find and configure your DAOs and repositories without having to provide XML configuration entries for them.

@Repository
public class SomeMovieFinder implements MovieFinder {
// ...
}

Any DAO or repository implementation will need to access to a persistence resource, depending on the persistence technology used, for example, a JDBC-based repository will need access to a JDBC DataSource, a JPA-based repository will need access to an EntityManager. The easiest way to accomplish this is to have this resource dependency injected using one of the @Autowired, @Inject, @Resource or @PersistenceContext annotations.

Below Example show for JDBC support. You would have the DataSource injected into an initialization method where you would create a JdbcTemplate and other data access support classes like SimpleJdbcCall etc using this DataSource.

@Repository
public class JdbcMovieFinder implements MovieFinder {
private JdbcTemplate jdbcTemplate;
@Autowired
public void init(DataSource ds) {
this.jdbcTemplate = new JdbcTemplate(ds);
}
// ...
}
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