Skip to content

Commit d17fba6

Browse files
JamesZBLJamesZBL
committed
完成 观察者模式 Sample
1 parent f293353 commit d17fba6

File tree

7 files changed

+302
-2
lines changed

7 files changed

+302
-2
lines changed

‎decorator/README.md‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -111,9 +111,9 @@ public class HammerSmithOperation implements Operation {
111111
/**
112112
* Decorator
113113
*/
114-
public class Application {
114+
public class me.zbl.ovserver.Application {
115115
116-
private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
116+
private static final Logger LOGGER = LoggerFactory.getLogger(me.zbl.ovserver.Application.class);
117117
118118
public static void main(String[] args) {
119119
LOGGER.info("仅由木匠制作锤把");

‎observer/src/main/java/me/zbl/observer/Application.java‎

Lines changed: 46 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,46 @@
1+
/**
2+
* MIT License
3+
* <p>
4+
* Copyright (c) 2017 James
5+
* <p>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
23+
*/
24+
package me.zbl.observer;
25+
26+
/**
27+
* Observer
28+
*/
29+
public class Application {
30+
31+
public static void main(String[] args) {
32+
Time time = new Time();
33+
time.addObserver(new Northern());
34+
time.addObserver(new Southern());
35+
36+
time.passing();
37+
time.passing();
38+
time.passing();
39+
time.passing();
40+
time.passing();
41+
time.passing();
42+
time.passing();
43+
time.passing();
44+
time.passing();
45+
}
46+
}

‎observer/src/main/java/me/zbl/observer/Northern.java‎

Lines changed: 57 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,57 @@
1+
/**
2+
* MIT License
3+
* <p>
4+
* Copyright (c) 2017 James
5+
* <p>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
23+
*/
24+
package me.zbl.observer;
25+
26+
import org.slf4j.Logger;
27+
import org.slf4j.LoggerFactory;
28+
29+
/**
30+
* 北方人
31+
*/
32+
public class Northern implements TimeObserver {
33+
34+
private static final Logger LOGGER = LoggerFactory.getLogger(Northern.class);
35+
36+
@Override
37+
public void update(TimePoint time) {
38+
39+
LOGGER.info("北方人吃饭了");
40+
switch (time) {
41+
case MORNING:
42+
LOGGER.info("煎饼果子");
43+
break;
44+
case NOON:
45+
LOGGER.info("炸酱面");
46+
break;
47+
case AFTERNOON:
48+
LOGGER.info("牛奶");
49+
break;
50+
case EVENING:
51+
LOGGER.info("包子");
52+
break;
53+
default:
54+
break;
55+
}
56+
}
57+
}

‎observer/src/main/java/me/zbl/observer/Southern.java‎

Lines changed: 57 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,57 @@
1+
/**
2+
* MIT License
3+
* <p>
4+
* Copyright (c) 2017 James
5+
* <p>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
23+
*/
24+
package me.zbl.observer;
25+
26+
import org.slf4j.Logger;
27+
import org.slf4j.LoggerFactory;
28+
29+
/**
30+
* 南方人
31+
*/
32+
public class Southern implements TimeObserver {
33+
34+
private static final Logger LOGGER = LoggerFactory.getLogger(Southern.class);
35+
36+
@Override
37+
public void update(TimePoint time) {
38+
39+
LOGGER.info("南方人吃饭了");
40+
switch (time) {
41+
case MORNING:
42+
LOGGER.info("热干面");
43+
break;
44+
case NOON:
45+
LOGGER.info("米饭");
46+
break;
47+
case AFTERNOON:
48+
LOGGER.info("茶");
49+
break;
50+
case EVENING:
51+
LOGGER.info("鱼");
52+
break;
53+
default:
54+
break;
55+
}
56+
}
57+
}

‎observer/src/main/java/me/zbl/observer/Time.java‎

Lines changed: 67 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,67 @@
1+
/**
2+
* MIT License
3+
* <p>
4+
* Copyright (c) 2017 James
5+
* <p>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
23+
*/
24+
package me.zbl.observer;
25+
26+
import org.slf4j.Logger;
27+
import org.slf4j.LoggerFactory;
28+
29+
import java.util.ArrayList;
30+
import java.util.List;
31+
32+
/**
33+
* 时间
34+
*/
35+
public class Time {
36+
37+
private static final Logger LOGGER = LoggerFactory.getLogger(Time.class);
38+
39+
private TimePoint point;
40+
private List<TimeObserver> observers;
41+
42+
public Time() {
43+
this.point = TimePoint.MORNING;
44+
observers = new ArrayList<>();
45+
}
46+
47+
public void addObserver(TimeObserver observer) {
48+
observers.add(observer);
49+
}
50+
51+
public void removeObserver(TimeObserver observer) {
52+
observers.remove(observer);
53+
}
54+
55+
public void passing() {
56+
TimePoint[] points = TimePoint.values();
57+
point = points[(point.ordinal() + 1) % points.length];
58+
LOGGER.info("时间来到了{}", point);
59+
notifyObservers();
60+
}
61+
62+
public void notifyObservers() {
63+
for (TimeObserver observer : observers) {
64+
observer.update(point);
65+
}
66+
}
67+
}

‎observer/src/main/java/me/zbl/observer/TimeObserver.java‎

Lines changed: 32 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,32 @@
1+
/**
2+
* MIT License
3+
* <p>
4+
* Copyright (c) 2017 James
5+
* <p>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
23+
*/
24+
package me.zbl.observer;
25+
26+
/**
27+
* 时间观察者接口
28+
*/
29+
public interface TimeObserver {
30+
31+
void update(TimePoint time);
32+
}

‎observer/src/main/java/me/zbl/observer/TimePoint.java‎

Lines changed: 41 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,41 @@
1+
/**
2+
* MIT License
3+
* <p>
4+
* Copyright (c) 2017 James
5+
* <p>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+
* SOFTWARE.
23+
*/
24+
package me.zbl.observer;
25+
26+
/**
27+
* 一天中的几个时间点
28+
*/
29+
public enum TimePoint {
30+
MORNING("早晨"), NOON("中午"), AFTERNOON("下午"), EVENING("晚上");
31+
private String name;
32+
33+
TimePoint(String name) {
34+
this.name = name;
35+
}
36+
37+
@Override
38+
public String toString() {
39+
return name;
40+
}
41+
}

0 commit comments

Comments
 (0)