SpringWeb入门（一）

最新推荐文章于 2024-07-05 20:19:23 发布

Heavy_Dream

最新推荐文章于 2024-07-05 20:19:23 发布

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分类专栏： Spring框架文章标签： spring springWeb

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本文通过一个具体的例子展示了如何使用Spring框架搭建项目的结构，包括配置文件、控制器、服务层、DAO层以及实体Bean的设计，并给出了测试代码。

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项目结构：

核心配置文件applicationContext.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"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">

<context:component-scan base-package="edu.cloud"></context:component-scan>

</beans>

控制器Action:

package edu.cloud.action;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;

import edu.cloud.service.UserService;

@Controller("userAction")
public class UserAction {
@Resource(name="userService")
private UserService userService;

public String addUser() {
userService.save();
return null;
}

}

服务层Service:

package edu.cloud.service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import edu.cloud.dao.UserDao;

@Service("userService")
public class UserService {
@Resource(name="userDao")
private UserDao userDao;

public void save() {
userDao.save();
}

}

Dao层：

package edu.cloud.dao;

import org.springframework.stereotype.Repository;

@Repository("userDao")
public class UserDao {

public void save() {
System.out.println("连接数据库进行保存");
}

}

实体Bean:

/**
*
*/
package edu.cloud.entity;

/**
* @author huangbaida
* @description
* @date 2018�?1�?21�?
*/
public class User {
private Integer id;
private String name;
private Integer age;

public User() {
}

public User(int id, String name) {
this.id = id;
this.name = name;
}

public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
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;
}

public void init_user() {
System.out.println("对象初始化调用?");
}
public void destroy_user() {
System.out.println("对象销毁调用?");
}

@Override
public String toString() {
return "User [id=" + id + ", name=" + name + ", age=" + age + "]";
}

}

测试：

package edu.cloud.entity;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import edu.cloud.action.UserAction;

public class Test {
public static void main(String[] args) {
//获取IOC容器
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("bean.xml");

UserAction userAction = (UserAction) applicationContext.getBean("userAction");
userAction.addUser();
}
}