Spring Boot is a new framework provided by the Pivotal team. It is designed to simplify the initial construction and development process of new Spring applications. The framework uses an ad hoc approach to configuration, eliminating the need for developers to define boilerplate configurations.

The operating environment of this tutorial: windows7 system, java10 version, DELL G3 computer.

1. Origin

Spring Boot is a new framework provided by the Pivotal team. It is designed to simplify the initial construction and development process of new Spring applications. The framework uses an ad hoc approach to configuration, eliminating the need for developers to define boilerplate configurations. To understand it in my own words, Spring Boot is actually not a new framework. It configures the use of many frameworks by default, just like Maven integrates all Jar packages and Spring Boot integrates all frameworks.

2. Solve the problem

Build services faster and more conveniently, greatly saving workload, as follows:

• 1) Configure web.xml and load it Spring and Spring mvc

• 2) Configure database connection and configure Spring transaction

• 3) Configure reading of loaded configuration files and enable annotations

• 4) Configuration log file

• ...

• After the configuration is completed, deploy Tomcat for debugging. It may be necessary for even a small function, so it is really troublesome to do it all over again! ! !

• The introduction of springboot will make it a thing of the past

3. Getting started with springBoot

There are many ways to build it, with Idea Introduction to building a project

• 1. Select File -> New —> Project... A box to create a new project will pop up

• ##2. Select Spring Initializr, Next will also have a configuration interface similar to the above. Idea helped us with the integration

• 3. After filling in the relevant content, click Next, select the dependent package and click Next, and finally confirm Click Finish if the information is correct.

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
 </dependency>

@RestController
public class HelloWorldController {
    @RequestMapping("/hello")
    public String index() {
        return "Hello World";
    }
}

@RunWith(SpringRunner.class)
   @SpringBootTest

public class HelloWorldControlerTests {
    private MockMvc mvc;
    @Before
    public void setUp() throws Exception {
        mvc = MockMvcBuilders.standaloneSetup(new HelloWorldController()).build();
    }
    @Test
    public void getHello() throws Exception {
    mvc.perform(MockMvcRequestBuilders.get("/hello").accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andDo(MockMvcResultHandlers.print())
                .andReturn();
    }
}

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
   </dependency>
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <fork>true</fork>
            </configuration>
        </plugin>
   </plugins>
</build>

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