Spring配置Bean，为属性赋值

SayHello的实体类：

package com.langchao;

/**
 * @ClassName: SayHello
 * @description:
 * @author: ZhangYawei
 * @Date: 2019\2\23 15:59
 **/
public class SayHello
{
    private String name;

    private int age;

    private char sex;

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public int getAge()
    {
        return age;
    }

    public void setAge(int age)
    {
        this.age = age;
    }

    public char getSex()
    {
        return sex;
    }

    public void setSex(char sex)
    {
        this.sex = sex;
    }

    public void hellowSpring()
    {
        System.out.println("HellowSpring" + name+"  " +age+"  "+sex);
    }

    @Override
    public String toString()
    {
        final StringBuilder sb = new StringBuilder("SayHello{");
        sb.append("name='").append(name).append('\'');
        sb.append(", age=").append(age);
        sb.append(", sex=").append(sex);
        sb.append('}');
        return sb.toString();
    }
}

Spring配置文件applicationContext.xml里配置SayHello的Bean：

 <!--创建Bean：
    class：类的全类名；通过反射在IOC容器里面创建Bean，所以必须有一个默认的无参构造
    id：标识容器中的Bean，id唯一-->
    <bean id="sayHello" class="com.langchao.SayHello">
        <property name="name" value="赵丽颖"></property>
        <property name="age" value="11"></property>
        <property name="sex" value="女"></property>
    </bean>

获取Bean：

   ApplicationContext ctx= new
        ClassPathXmlApplicationContext("applicationContext.xml");
        SayHello sayHello1 = (SayHello)ctx.getBean("sayHello");
        sayHello1.hellowSpring();

打印结果：

Car的实体类：

package com.langchao;

/**
 * @ClassName: Car
 * @description: 车辆信息的Bean
 * @author: ZhangYawei
 * @Date: 2019\2\24 10:26
 **/
public class Car
{
    private String brand;
    private String corp;
    private double prize;
    private int speed;

    public String getBrand()
    {
        return brand;
    }

    public void setBrand(String brand)
    {
        this.brand = brand;
    }

    public String getCorp()
    {
        return corp;
    }

    public void setCorp(String corp)
    {
        this.corp = corp;
    }

    public double getPrize()
    {
        return prize;
    }

    public void setPrize(double prize)
    {
        this.prize = prize;
    }

    public int getSpeed()
    {
        return speed;
    }

    public void setSpeed(int speed)
    {
        this.speed = speed;
    }

    public Car(String brand, String corp, double prize)
    {
        this.brand = brand;
        this.corp = corp;
        this.prize = prize;
    }

    public Car(String brand, String corp, int speed)
    {
        this.brand = brand;
        this.corp = corp;
        this.speed = speed;
    }

    public Car(String brand, String corp, double prize, int speed)
    {
        this.brand = brand;
        this.corp = corp;
        this.prize = prize;
        this.speed = speed;
    }

    public Car()
    {
    }

    @Override
    public String toString()
    {
        final StringBuilder sb = new StringBuilder("Car{");
        sb.append("brand='").append(brand).append('\'');
        sb.append(", corp='").append(corp).append('\'');
        sb.append(", prize=").append(prize);
        sb.append(", speed=").append(speed);
        sb.append('}');
        return sb.toString();
    }
}

Spring配置文件applicationContext.xml里配置Car的Bean：

<!--通过构造器的方式配置Bean：通过index下标-->
<bean id="car" class="com.langchao.Car">
    <constructor-arg value="Baoma" index="0"></constructor-arg>
    <constructor-arg value="Shanghai" index="1"></constructor-arg>
    <constructor-arg value="4000000" index="2"></constructor-arg>
    <constructor-arg value="250" index="3"></constructor-arg>
</bean>

获取Car：

  Car car = (Car)ctx.getBean("car");
        System.out.println(car);

打印结果：

通过name赋值（如果赋的值里面有特殊符号：用<![CDATA[]]>包裹起来）：

 <!--通过构造器配置Bean：通过name赋值-->
    <bean id="car1" class="com.langchao.Car">
        <constructor-arg value="Audi" name="brand"></constructor-arg>
        <!--如果value值里面包含特殊符号：使用<![CDATA[]]>包裹起来-->
        <constructor-arg name="corp">
            <value><![CDATA[<上海热的很啊>]]></value>
        </constructor-arg>
        <constructor-arg value="240" name="speed"></constructor-arg>
    </bean>

控制台：

通过idex和数据类型（type）赋值，走的是brand，corp，speed的有参构造：

<!--通过构造器配置Bean：通过下标和数据类型赋值-->
    <bean id="car2" class="com.langchao.Car">
        <constructor-arg value="FentTian" index="0"></constructor-arg>
        <constructor-arg value="Shanghai" type="java.lang.String"></constructor-arg>
        <constructor-arg value="22222" type="int"></constructor-arg>
    </bean>

控制台：

Person的实体类：

package com.langchao;

/**
 * @ClassName: Person
 * @description: 人的实体Bean
 * @author: ZhangYawei
 * @Date: 2019\2\24 11:01
 **/
public class Person
{
    private String name;
    private int age;
    private char sex;
    private Car car;

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public int getAge()
    {
        return age;
    }

    public void setAge(int age)
    {
        this.age = age;
    }

    public char getSex()
    {
        return sex;
    }

    public void setSex(char sex)
    {
        this.sex = sex;
    }

    public Car getCar()
    {
        return car;
    }

    public void setCar(Car car)
    {
        this.car = car;
    }

    @Override
    public String toString()
    {
        final StringBuilder sb = new StringBuilder("Person{");
        sb.append("name='").append(name).append('\'');
        sb.append(", age=").append(age);
        sb.append(", sex=").append(sex);
        sb.append(", car=").append(car);
        sb.append('}');
        return sb.toString();
    }
}

把Car引入到Person中：

<!--配置人的Bean：引用car的实体-->
    <bean id="person" class="com.langchao.Person">
        <property name="name" value="Tomo"></property>
        <property name="age" value="21"></property>
        <property name="sex" value="男"></property>
        <property name="car" ref="car1"></property>
        <property name="car.prize" value="323232"></property>
        <!--内部Bean，不能被外部引用，只能在内部使用
        <property name="car">
            <bean id="car3" class="com.langchao.Car">
                <property name="brand" value="Jery"></property>
                <property name="corp" value="Tesila"></property>
                <property name="prize" value="2122"> </property>
                <property name="speed" value="250"></property>
            </bean>
        </property>-->
    </bean>

控制台：

Map配置Bean的方法：

package com.langchao;

import java.util.Map;

/**
 * @ClassName: NewPerson
 * @description: 新人的实体Bean
 * @author: ZhangYawei
 * @Date: 2019\2\24 11:59
 **/
public class  NewPerson
{
    private String name;
    private int age;
    private Map<String,Car> cars;

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public int getAge()
    {
        return age;
    }

    public void setAge(int age)
    {
        this.age = age;
    }

    public Map<String, Car> getCars()
    {
        return cars;
    }

    public void setCars(Map<String, Car> cars)
    {
        this.cars = cars;
    }

    @Override
    public String toString()
    {
        final StringBuilder sb = new StringBuilder("NewPerson{");
        sb.append("name='").append(name).append('\'');
        sb.append(", age=").append(age);
        sb.append(", cars=").append(cars);
        sb.append('}');
        return sb.toString();
    }
}

Spring配置文件applicationContext.xml里配置信息：

<bean id="newPerson" class="com.langchao.NewPerson">
        <property name="name" value="大头儿子"></property>
        <property name="age" value="21"></property>
        <property name="cars">
            <map>
                <entry key="AA" value-ref="car"></entry>
                <entry key="BB">
                    <bean class="com.langchao.Car">
                        <property name="brand" value="小头爸爸"></property>
                        <property name="corp" value="Modole2"></property>
                        <property name="prize" value="322222"></property>
                        <property name="speed" value="250"></property>
                    </bean>
                </entry>
            </map>
        </property>
    </bean>

控制台信息：

通过util：map（把map单独提取出来，可供多个Bean引用）命名空间和p命名空间配置，要导入util包和p命名空间的包：

<!--单独把map提取出来可供多个Bean引用-->

<util:map id="cars">
    <entry key="AA" value-ref="car"/>
    <entry key="BB" value-ref="car1"/>
    <entry key="CC" value-ref="car2"/>
</util:map>

<!--p命名空间配置Bean：--> <bean id="person1" class="com.langchao.NewPerson" p:name="Rose" p:age="23" p:cars-ref="cars"></bean>

对应的car，car1，car2配置：

 <!--通过构造器的方式配置Bean：通过index下标-->
    <bean id="car" class="com.langchao.Car">
        <constructor-arg value="Baoma" index="0"></constructor-arg>
        <constructor-arg value="Shanghai" index="1"></constructor-arg>
        <constructor-arg value="4000000" index="2"></constructor-arg>
        <constructor-arg value="250" index="3"></constructor-arg>
    </bean>

  <!--通过构造器配置Bean：通过name赋值-->
    <bean id="car1" class="com.langchao.Car">
        <constructor-arg value="Audi" name="brand"></constructor-arg>
        <!--如果value值里面包含特殊符号：使用<![CDATA[]]包裹起来-->
        <constructor-arg name="corp">
            <value><![CDATA[<上海热的很啊>]]></value>
        </constructor-arg>
        <constructor-arg value="240" name="speed"></constructor-arg>
    </bean>

 <!--通过构造器配置Bean：通过下标和数据类型赋值-->
    <bean id="car2" class="com.langchao.Car">
        <constructor-arg value="FentTian" index="0"></constructor-arg>
        <constructor-arg value="Shanghai" type="java.lang.String"></constructor-arg>
        <constructor-arg value="22222" type="int"></constructor-arg>
    </bean>

Person对象：

 NewPerson newPerson = (NewPerson)cxt.getBean("person1");
        System.out.println(newPerson);

控制台信息：

集合Bean的配置，HeyMan的实体类；

package com.langchao;

import java.util.List;

/**
 * @ClassName: HeyMan
 * @description:
 * @author: ZhangYawei
 * @Date: 2019\2\25 10:11
 **/
public class HeyMan
{
    private String name;
    private int age;
    private List<Car> carss;

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public int getAge()
    {
        return age;
    }

    public void setAge(int age)
    {
        this.age = age;
    }

    public List<Car> getCarss()
    {
        return carss;
    }

    public void setCarss(List<Car> carss)
    {
        this.carss = carss;
    }

    @Override
    public String toString()
    {
        final StringBuilder sb = new StringBuilder("HeyMan{");
        sb.append("name='").append(name).append('\'');
        sb.append(", age=").append(age);
        sb.append(", carss=").append(carss);
        sb.append('}');
        return sb.toString();
    }
}

Spring配置文件applicationContext.xml里配置信息：

<!--单独把list提取出来可供多个Bean引用-->
        <util:list id="carss">
            <ref bean="car"/>
            <ref bean="car1"/>
            <ref bean="car2"/>
        </util:list>
    <!--p命名空间配置Bean：-->
    <bean id="heyMan" class="com.langchao.HeyMan" p:name="倚天屠龙" p:age="24" p:carss-ref="carss"></bean>

控制台信息：

Properties配置属性值，DataSource实体类：

package com.langchao;

import java.util.Properties;

/**
 * @ClassName: DataSource
 * @description:
 * @author: ZhangYawei
 * @Date: 2019\2\25 10:18
 **/
public class DataSource
{
    private Properties properties;

    public Properties getProperties()
    {
        return properties;
    }

    public void setProperties(Properties properties)
    {
        this.properties = properties;
    }

    @Override
    public String toString()
    {
        final StringBuilder sb = new StringBuilder("DataSource{");
        sb.append("properties=").append(properties);
        sb.append('}');
        return sb.toString();
    }
}

Spring配置文件applicationContext.xml里配置信息：

 <!--对Properties配置的Bean，进行赋值：-->
    <bean id="dataSource" class="com.langchao.DataSource">
        <property name="properties">
            <props>
                <prop key="url">www.baidu.com</prop>
                <prop key="username">root</prop>
                <prop key="password">root</prop>
                <prop key="driver">mysql:dreiver.com</prop>
            </props>
        </property>
    </bean>

控制台信息：