Spring学习日志

Spring学习日志

目录

• Spring快速入门
• 1.实体类User
• • 1.1方法一：applicationContext.xml
  • 1.2方法二：注解
• 2.测试执行

Spring快速入门

要求：有jsp+servlet和JavaBean的项目经验。

1.实体类User

代码com.xxx.pojo.Users.java

package com.xxx.pojo;

import org.springframework.stereotype.Component;

public class Users {
    private String id;
    private String name;
    private String sex;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

    public String getSex() {
        return sex;
    }

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

1.1方法一：applicationContext.xml

applicationContext.xml

1.2方法二：注解

applicationContext.xml

在代码com.xxx.pojo.Users类前添加注解

package com.xxx.pojo;

import org.springframework.stereotype.Component;
//
@Component("Users")
public class Users {
	//通过注解声明的bean要在代码中初始化属性
    private String id = "id";
    private String name = "user";
    private String sex = "sex";

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

    public String getSex() {
        return sex;
    }

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

2.测试执行

package com.xxx.test;

import org.junit.jupiter.api.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.xxx.pojo.Users;

public class SpringTest {
    @Test
    public void test() {
        ApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml"});
        Users user = (Users) context.getBean("Users");
        System.out.println(user.getName());
    }
}