java+spring+bean+ Injection method

1. Prepare to share files first
Call method Client Side Client.java:

import org.springframework.context.support.ClassPathXmlApplicationContext;public class Client {    public static void main(String[] args) {        //创建容器        ClassPathXmlApplicationContext cac = new ClassPathXmlApplicationContext("service.xml");        //获取bean对象        CustomerServiceImpl cs = (CustomerServiceImpl) cac.getBean("CustomerServiceImpl");        //调用方法        cs.saveCustomer();    }}

Interface file Customerservice.java:

public interface CustomerService {    void saveCustomer();}

2. Constructor Mode injection:
Spring configuration file, Service.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">    <bean id="CustomerServiceImpl" class="CustomerServiceImpl">        <constructor-arg name="name" value="zhangsan"></constructor-arg>        <constructor-arg name="age" value="3"></constructor-arg>    </bean></beans>

Inject Bean class file: Customerserviceimpl.java

public class CustomerServiceImpl implements CustomerService {    private String name ;    private Integer age;    public CustomerServiceImpl(String name, Integer age) {        this.name = name;        this.age = age;    }    @Override    public void saveCustomer() {        System.out.println("CustomerServiceImpl-saveCustomer-" + name + "-" + age);    }}

3. Set Method Injection
Spring configuration file, Service.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"><bean id="CustomerServiceImpl" class="CustomerServiceImpl">    <property name="name" value="李四"></property>    <property name="age" value="10"></property></bean></beans>

Inject Bean class file: Customerserviceimpl.java:

public class CustomerServiceImpl implements CustomerService {    private String name ;    private Integer age;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public Integer getAge() {        return age;    }    public void setAge(Integer age) {        this.age = age;    }    @Override    public void saveCustomer() {        System.out.println("CustomerServiceImpl-saveCustomer-" + name + "-" + age);    }}

java+spring+bean+ Injection method