Spring学习（一）

发表于 更新于 分类于 ， ， 阅读次数：

入门Spring

1
2
3
4
5
6
package com.xiaoguan.dao;

public interface UserDao {
    void deleteById();
}

1
2
3
4
5
6
7
package com.xiaoguan.service;

public interface UserService {
    //删除用户信息
    void deleteUser();
}

1
2
3
4
5
6
7
8
9
10
11
12
package com.xiaoguan.web;

import com.xiaoguan.service.UserService;
import com.xiaoguan.service.impl.UserServiceImpl;

public class UserAction {
    private UserService userService ;
    public void deleteRequest(){
        userService.deleteUser();
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
package com.xiaoguan.test;

import com.xiaoguan.web.UserAction;
import org.junit.Test;

public class testUser {
    @Test
    public void testUser1(){
        UserAction userAction = new UserAction();
        userAction.deleteRequest();
    }
}

1
2
3
4
5
6
7
8
package com.xiaoguan.bean;

public class User {
    public User() {
        System.out.println("User无参数构造方法执行！uu");
    }
}

1
2
3
4
5
6
7
8
package com.xiaoguan.bean;

public class Vid {
    public Vid() {
        System.out.println("vid执行l");
    }
}

1
2
3
4
5
6
7
8
package com.xiaoguan.dao;

public class UserDaoImplForMySql {
    public void insert(){
        System.out.println("mysql正在insert");
    }
}

1
2
3
4
5
6
<?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="vidBean" class="com.xiaoguan.bean.Vid"/>
</beans>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
<?xml version="1.0" encoding="UTF-8"?>

<configuration>

    <loggers>
        <!--
            level指定日志级别，从低到高的优先级：
                ALL < TRACE < DEBUG < INFO < WARN < ERROR < FATAL < OFF
        -->
        <root level="ERROR">
            <appender-ref ref="spring6log"/>
        </root>
    </loggers>

    <appenders>
        <!--输出日志信息到控制台-->
        <console name="spring6log" target="SYSTEM_OUT">
            <!--控制日志输出的格式-->
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss SSS} [%t] %-3level %logger{1024} - %msg%n"/>
        </console>
    </appenders>

</configuration>
1
2
3
4
5
6
7
8
9
<?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="userBean" class="com.xiaoguan.bean.User"/>
    <bean id="mysqlDao" class="com.xiaoguan.dao.UserDaoImplForMySql"/>
    <bean id="nowTime" class="java.util.Date"/>
    <bean id="userDao" class="com.xiaoguan.dao.UserDaoImplForMySql"/>
</beans>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
package com.xiaoguan.test;
import com.xiaoguan.bean.User;
import com.xiaoguan.dao.UserDaoImplForMySql;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.text.SimpleDateFormat;
import java.util.Date;

public class FirstSpringTest {
    @Test
    public void testLog(){
        new ClassPathXmlApplicationContext("spring6.xml","beans.xml");
        Logger logger= LoggerFactory.getLogger(FirstSpringTest.class);
        logger.info("我是一条消息");
        logger.debug("我是一条调试信息");
        logger.error("我是一条错误信息");
    }
    @Test
    public void testBeanFactory(){
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("spring6.xml","beans.xml");
        User userBean = applicationContext.getBean("userBean", User.class);
        System.out.println(userBean);
    }
    @Test
    public void testFirstSringCode(){
        //文件没有在类路径下可以用FileSystemApplicationContext()里面写文件的绝对路径来读
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("spring6.xml","beans.xml");
        Object userBean = applicationContext.getBean("userBean");
        System.out.println(userBean);
        Object mysqlDao = applicationContext.getBean("mysqlDao");
        System.out.println(mysqlDao);
        Date time = applicationContext.getBean("nowTime", Date.class);
        System.out.println(time);

        SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SS");
        String formatTime = simpleDateFormat.format(time);
        System.out.println(formatTime);

        UserDaoImplForMySql userDao = applicationContext.getBean("userDao", UserDaoImplForMySql.class);
        userDao.insert();
    }
}