CSC305 Lecture 04

Individual Software Design and Development
Maven
(202501)

Transcript

1. Dr. Javier Gonzalez-Sanchez javiergs@calpoly.edu www.javiergs.info o ffi ce: 14 -227 CSC 305 Individual Software Design and Development Lecture 04. Dependency Management
2. Previously … 2
3. Previously …
4. Previously … 4
5. Dependencies
6. Library • A collection of resources (cl a sses) • A J a v a Archive, or JAR f ile, cont a ins a ll of the v a rious components th a t m a ke up a self- cont a ined, execut a ble J a v a a pplic a tion or, most commonly, a J a v a libr a ry to which a J a v a Runtime Environment c a n link. 6
7. jar-download.com 7
8. • Build m a n a gement tool • M a ven a utom a tes dependency m a n a gement by a utom a tic a lly downlo a ding required libr a ries a nd their dependencies, ensuring consistent builds with speci f ied versions. • In contr a st, m a nu a lly downlo a ding JARs is l a bor-intensive a nd error-prone. 8
9. • The project object model (POM) f ile describes a project a nd its dependencies. • A st a nd a rdized directory form a t. • Repositories where third-p a rty softw a re is stored a nd discovered. 9
10. Maven File and Directories 10
11. Maven
12. Create a project with Maven support 12
13. POM.xml 13
14. Maven Repository 14
15. Adding a New Dependency 15
16. Right-Click POM.xml 16
17. Jsoup Java HTML Parser
18. Jsoup • A J a v a libr a ry th a t simpli f ies working with HTML a nd XML. • O ff ers URL fetching, d a t a p a rsing, extr a ction, a nd m a nipul a tion. • https://jsoup.org/ 18
19. MVN Repository 19
20. Load Maven Changes 20
21. Jsoup Example 21
22. https://github.com/CSC3100/Maven 22 https://github.com/CSC3100/Tool-Maven
23. We need to talk about the Factory Pattern Pattern 23
24. JavaParser A Parser for Java Code
25. JavaParser • A J a v a libr a ry to a n a lyze, tr a nsform, a nd gener a te J a v a code. • https://j a v a p a rser.org/ 25
26. MVN Repository 26
27. Load Maven Changes 27
28. JavaParser Example 28
29. https://github.com/CSC3100/Maven 29 https://github.com/CSC3100/Tool-Maven
30. We need to talk about the Null Object Pattern Pattern 30
31. JFreeChart Display Charts
32. JFreeChart • https://www.jfree.org/jfreech a rt/ • JFreeCh a rt is a libr a ry to displ a y profession a l-qu a lity ch a rts. 32
33. MVN Repository 33
34. Load Maven Changes 34
35. JFreeChart Example 35
36. https://github.com/CSC3100/Maven 36 https://github.com/CSC3100/Tool-Maven
37. Another appearance of the Factory Pattern Pattern 37
38. Weka Machine Learning
39. Weka • Wek a is a collection of m a chine le a rning a nd d a t a a n a lysis • W a ik a to Environment for Knowledge An a lysis (Wek a ) • developed a t the University of W a ik a to, New Ze a l a nd • https://ml.cms.w a ik a to. a c.nz/wek a • 39
40. MVN Repository 40
41. Load Maven Changes 41
42. Step 1: Create Instances 42
43. Step 1: Or Load Instances 43
44. Step 2. Clustering 44
45. https://github.com/CSC3100/Maven 45 https://github.com/CSC3100/Tool-Maven
46. MQTT Message Queuing
47. Pong 47 https://github.com/CSC3100/Pong-Game
48. Eclipse Paho for Java Wh a t is Eclipse P a ho? • A set of MQTT client libr a ries developed by the Eclipse Found a tion. • It supports multiple l a ngu a ges, such a s J a v a , Python, J a v a Script, etc. J a v a Dependency (M a ven) <dependency> <groupId>org.eclipse.paho</groupId> <artifactId>org.eclipse.paho.client.mqttv3</artifactId> <version>1.2.5</version> </dependency> 48
49. https://github.com/CSC3100/MQTT
50. https://github.com/CSC3100/MQTT
51. We need to talk about the Publisher-Subscriber Pattern Pattern 51
52. JDBC SQL Database
53. Key Idea 53 ⚙
54. www.freesqldatabase.com 54
55. Dependencies 55
56. Connection 56
57. SQL Statements 57
58. We need to talk about Standard Solutions Pattern 58
59. Logging
60. Problem 60
61. Problem 61
62. Bad Idea System.out.println 62 Messages
63. Logging • Recording events, a ctions, or mess a ges th a t occur during the execution of a progr a m. • Proper logging is essenti a l for m a int a ining a nd troubleshooting a pplic a tions e ff ectively throughout their lifecycle. 63
64. Good Idea 64 message 01 message 02 message 03 message 04 message 05
65. SLF4J Logback • St a nds for Simple Logging F a c a de for J a v a • It provides a uni f ied interf a ce for logging oper a tions, a llowing developers to write logging code without binding their a pplic a tion to a speci f ic logging implement a tion. • We need to t a lk a bout the F a c a de P a ttern 65
66. Getting Started
67. SLF4J Logback | Add the dependency 67 https://github.com/CSC3100/Tool-Logging
68. SLF4J Logback | Logging 68 https://github.com/CSC3100/Tool-Logging
69. SLF4J Logback | Logging 69 https://github.com/CSC3100/Tool-Logging
70. Severity Level 70 TRACE DEBUG INFO WARN ERROR Severity
71. We want this 71 message 01 message 02 message 03 message 04 message 05 trace() debug() info () warn () error() Logger 71
72. To be continued…
73. Maven File and Directories 73
74. Resources Folder • The resources folder in a M a ven project stores non-source-code f iles th a t your a pplic a tion needs, such a s con f igur a tion f iles, property f iles, im a ges, a nd other resources. • These f iles a re included in the f in a l build output a nd a v a il a ble on the cl a ssp a th a t runtime. 74
75. src/main/resources/logback.xml • logb a ck.xml is a con f igur a tion f ile for SLF4J Logb a ck. • It de f ines how logging should be h a ndled, including log levels, a ppenders (where logs a re written), a nd log form a ts. • When your a pplic a tion st a rts, SLF4J Logb a ck a utom a tic a lly looks for this con f igur a tion f ile. 75
76. ConsoleAppender 76 message 01 message 02 message 03 message 04 message 05 trace() debug() info () warn () error() Logger 76 Appender
77. src/main/resources/logback.xml 77 https://github.com/CSC3100/Tool-Logging
78. SLF4J Logback | Logging 78
79. ConsoleAppender 79 message 01 message 02 message 03 message 04 message 05 trace() debug() info () warn () error() Logger 79 Appender
80. Encoder
81. Logstash Logback Encoder | POM.xml • Let’s use a nother libr a ry to t a ke a dv a nt a ge of extr a encoders • form a t Spring Boot logs in JSON form a t 81 https://github.com/CSC3100/Tool-Logging
82. src/main/resources/logback.xml 82 https://github.com/CSC3100/Tool-Logging
83. SLF4J Logback | Logging 83
84. FileAppender
85. Next 85 trace() debug() info () warn () error() message 01 message 02 message 03 message 04 message 05 Logger Appender Appender
86. src/main/resources/logback.xml 86 https://github.com/CSC3100/Tool-Logging
87. SLF4J Logback | Logging 87
88. Questions 88
89. Lab 04. Maven
90. Create a Maven Project on your IDE Lab 90
91. Download and Run on Your computer: https://github.com/CSC3100/Tool-Maven Lab 91
92. CSC 305 Individual Software Design and Development Javier Gonzalez-Sanchez, Ph.D. javiergs@calpoly.edu Summer 2024 Copyright. These slides can only be used as study material for the class CSC305 at Cal Poly. They cannot be distributed or used for another purpose.