Spring Getting Started sample

Spring Development Environment Construction

Spring is a development framework that runs in a Java environment, so the following related software needs to be prepared before development:

1, JDK7 or above version

2, Eclipse4 or above version

3. Spring Framework Package 3 or 3 or later

Introduction to the Spring development package

When creating a spring project, it is necessary to introduce the spring development package, otherwise it will not be possible to establish the spring development and running environment, the following is a brief introduction of the following spring's core development package basic Purpose :

Spring Core

Spring Beans

Spring AOP

Spring Context

The following development package files are not spring core development packages, but offer a variety of enterprise-class services:

Spring Aspect

Spring Context Support

Spring Expression

Spring Framework Bom

Spring instrument

Spring Instrument Tomcat

Spring JDBC

Spring JMS

Spring ORM

Spring OXM

Spring Struts

Spring Test

Spring TX

Spring Web

Spring WEBMVC

Spring Webmvc Portlet

Create a sample project

The steps to create a spring IOC-based applet are as follows :

Set up Spring Engineering

Writing Java files

Writing a configuration file

Running an instance project

Set up Spring Engineering

First, we need to build a common Java project in Eclipse, and then introduce spring's core jar file into the project.

Writing Java files

here, we build the Java files one by one in the project:

Ihellomessage: An interface for defining output greeting information

Hellowold: An implementation class for an interface that outputs "Hello everybody" to the user

Hellochina: Interface implementation class, output "Everyone good" to the user

Person: A character class that invokes the Ihellomessage interface to output greeting messages to the user

Main: The entry class for the program, which loads the configuration file and launches the IOC container, invokes the character class, and outputs the greeting message to the user.

Writing configuration information

Next, create the configuration file Hellomessage.xml file for the sample code, as shown in the following example:

<?xml version= "1.0" encoding= "UTF-8"? ><!    DOCTYPE beans Public "-//spring/dtd bean/en" "Http://www.springframework.org/dtd/spring-beans.dtd" ><beans> <bean id= "HelloWorld" class= "Com.jike.spring.chapter01.HelloWorld" ></bean> <bean id= "Hellochina" class= "Com.jike.spring.chapter01.HelloChina" ></bean> <bean id= "person" class= " Com.jike.spring.chapter01.Person "> <property name=" hellomessage "ref=" Hellochina "/> </bean></b Eans>

Run the sample project

Compile and run the sample project, view the output information in the console, and run the program output correctly.

Spring Getting Started sample