随笔分类 - Java
摘要：If you were using Microservice with Spring Boot to build different REST API endpoints, context path might help you. For example, you have two endpoint
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摘要：Aspect-Oriented Programming (AOP) complements Object-Oriented Programming (OOP) by providing another way of thinking about program structure. The key
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摘要：Previously we use Application Context to get Bean and Dependenies injection. It is actually easier to use 'CommonLineRunner'. Main beneift is we can u
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摘要：It is recommened to write unit testing with Mockito in Spring framework, because it is much faster with Spring framework test. But in case you can doi
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摘要：For example, we want to test against a implemataion: We want to do the test with Java Context: 1. Bring in some dependencies: in pom.xml Create a new
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摘要：In this post, we are going to see more functionalities in Mockito. Mock a List interface: Call multi times: First call, return 10, second times return
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摘要：Previously we have seen how to do Unit testing with Mockito; In this post, we are going to see, using annotation from Mockito to make testing easier:
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摘要：We have the implemetion: And we want to test agaisnst it:
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摘要：Check the get started guid https://junit.org/junit5/docs/current/user-guide/#overview-getting-help
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摘要：Let's say we have a extral app.proporites file which contains some extra configuration: We can read the extra propoties by using @Value("${xxx}") As y
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摘要：Component Scan is important concept when we want to create Bean. Currently we know what, for the class, we want to create Bean from it, we need to add
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摘要：We have the following example: The idea is to understand in different cases, how those instanse are created. Currently when running the application, w
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摘要：When we use Bean to do autowired, it actually use singleton, so even we create multi instanses, they are the same: It print out: We can also tell Spri
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摘要：In the example we have currently: The way we do Autowired is by '@Primary' decorator. It is clear that one implementation detail is the best, then we
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摘要：Spring boot is really good for Dependencies injection by using Autowiring. Each class instancse in spring boot is called 'Bean', we can use 'Bean' to
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摘要：JPA is just like a helper class for providing data for Controller, has method like 'findOne', 'findAll', 'saveAndFlush', 'delete'. in repository/Shipw
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摘要：We need our data persistence with configuring our datasouce: In application.properties: " " tells to save the in memory data into a file called 'gs-sp
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摘要：In pom.xml add dependency: Then in application.properties: Now, in the broswer, we can access h2 database though url: localhost:8080/h2
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摘要：We can use different application properties application.properties: application-prod.properties: application-test.properties: We can setup different p
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