Spring中Bean的配置

最新推荐文章于 2022-08-05 17:27:55 发布

原创最新推荐文章于 2022-08-05 17:27:55 发布 · 342 阅读

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#spring #bean #class

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本文介绍了Spring框架中Bean的基本配置方式，包括无参构造方法初始化Bean及通过带参数构造方法创建Bean的方法，并给出了具体的XML配置示例。

基本的Bean配置

package com.spring.test;

public class Student {
    private String name;
    private int age;
    private String 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 String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
}

Bean配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">

<beans>
    <bean id="student" name="student" class="com.spring.test.Student"/>
</beans>

2.类中有带参数的构造方法的Bean配置

package com.spring.test;

public class Student {
    private String name;
    private int age;
    private String sex;

    public Student(String name, int age, String sex) {
        super();
        this.name = name;
        this.age = age;
        this.sex = 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 String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
}

Bean配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
    <bean id="student" name="student" class="com.spring.test.Student">
        <constructor-arg index="0" value="xiaoming"></constructor-arg>
        <constructor-arg index="1" value="18"></constructor-arg>
        <constructor-arg index="2" value="男"></constructor-arg>
    </bean>
</beans>