数据的装配

为bean的属性注入值，称为数据的装配，可装配不同类型的值

简单类型(共19中)

八种基本类型 使用value注入值

byte,short,int,long,float,double,char,boolean

String Class Resource
先添加jar包

<dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><scope>test</scope></dependency><!--spring-core--><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId></dependency><!--spring-bean--><!-- https://mvnrepository.com/artifact/org.springframework/spring-beans --><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId></dependency><!--spring-context--><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId></dependency><!--spring-expression--><dependency><groupId>org.springframework</groupId><artifactId>spring-expression</artifactId></dependency></dependencies>

第二步创建配置文件spring.xml

<?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.xsd"></beans>

第三步书写一个类Hello

package com.ioc05.entity;/*** package_name:com.ioc05.entity* Author:徐亚远* Date:2020/1/19 18:44* 项目名:springDemo01* Desription:**/
public class Hello {private Integer age;private Byte sex;private String username;@Overridepublic String toString() {return "Hello{" +"age=" + age +", sex=" + sex +", username='" + username + '\'' +", price=" + price +", aClass=" + aClass +'}';}private Double price;private Class aClass;public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}public Byte getSex() {return sex;}public void setSex(Byte sex) {this.sex = sex;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public Double getPrice() {return price;}public void setPrice(Double price) {this.price = price;}public Class getaClass() {return aClass;}public void setaClass(Class aClass) {this.aClass = aClass;}
}

第四步 配置spring.xmll文件

<?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.xsd"><bean id="hello" class="com.ioc05.entity.Hello"><property name="age" value="21"/><property name="price" value="1.23"/><property name="sex" value="4"/><property name="username" value="admin"/><property name="aClass" value="java.lang.String"/></bean>
</beans>

第五步书写测试方法HelloController

package com.ioc05.controller;import com.ioc05.entity.Hello;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;/*** package_name:com.ioc05.controller* Author:徐亚远* Date:2020/1/19 18:47* 项目名:springDemo01* Desription:**/
public class HelloController {public static void main(String args[]) {ApplicationContext ac = new ClassPathXmlApplicationContext("ioc05/spring.xml");Hello helloOne = (Hello) ac.getBean("hello");System.out.println("hello: "+helloOne);}
}

执行结果如图