spring第一个小例子（Spring_xjs1）

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第一个spring小例子（使用Spring4.0版本）

Spring-HelloWord

**导入核心jar包：

spring-beans

spring-context

spring-core

spring-aop

spring-expression

spring-logging

 步骤：1

在项目名上右键选择properties-->Project Facets/Runtimes进行配置。

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pom.xml文件：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.oracle.dwp</groupId>
  <artifactId>Spring_first</artifactId>
  <version>1.0.0</version>
  
  <dependencies>
      <!-- aop -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>4.0.0.RELEASE</version>
    </dependency>

    <!-- 上下文 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.0.0.RELEASE</version>
    </dependency>

    <!-- junit单元测试 -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.10</version>
        <scope>test</scope>
    </dependency>

  </dependencies>
</project>

Students.java实体类：

package com.entity;

import java.io.Serializable;
import java.util.Date;

public class Students implements Serializable{
    private String sid;//学号
    private String name;//姓名
    private String gender;//性别
    private Date birthday;//生日
    private String address;//住址
    
    public Students(String sid, String name, String gender, Date birthday,
            String address) {
        this.sid = sid;
        this.name = name;
        this.gender = gender;
        this.birthday = birthday;
        this.address = address;
    }
    public Students() {
    }
    public String getSid() {
        return sid;
    }
    public void setSid(String sid) {
        this.sid = sid;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    public Date getBirthday() {
        return birthday;
    }
    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public String toString() {
        return "Students [sid=" + sid + ", name=" + name + ", gender=" + gender
                + ", birthday=" + birthday + ", address=" + address + "]";
    }

}

applicationContext.xml配置文件---Spring的配置文件

注意：里面有日期转换的问题***

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
                      http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
        
    <bean id="dateFormat" class="java.text.SimpleDateFormat">
        <constructor-arg value="yyyy-MM-dd"/>
    </bean>
                      
    <bean id="stu" class="com.entity.Students">
        <property name="sid" value="s0001"></property>
        <property name="name" value="谢军帅"></property>
        <property name="gender" value="男"></property>
        <property name="birthday">
            <bean factory-bean="dateFormat" factory-method="parse">
                <constructor-arg value="1998-07-15"></constructor-arg>
            </bean>
        </property>
        <property name="address" value="安阳"></property>
    </bean>
</beans>

测试类StudentsTest.java：

package com.entity;

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

public class StudentsTest {
    
    @Test
    public void fun1(){
        //获得上下文对象
        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
        //获得名字叫stu的学生对象。通过IOC容器获得
        //这个学生对象是通过IOC容器注入给你的，无需用new.---利用反射
        //两大核心技术：1.XML解析2.反射
        Students s = (Students) ctx.getBean("stu");
        System.out.println(s);        
    }
}

测试结果：

Students [sid=s0001, name=谢军帅, gender=男, birthday=Wed Jul 15 00:00:00 GMT+08:00 1998, address=安阳]