idea spring boot build

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Spring Boot can easily create a separate Spring-based production-level applications can run. We Spring platform and third-party libraries, a self-righteous point of view, so that you can easily get started. Most Spring Boot application requires very little Spring configuration.

You can create can use java -jar or more conventional war started deploying Java applications using Spring Boot. We also offer a command-line tool to run "spring Script" is.

The main objectives are:

Provide for all Spring developers radically faster experience and entry can be widely accessible.

Out of the box, but as demand begins to deviate from the default values ​​and quickly out of the woods.

Provide (such as embedded servers, security, metrics, health checks and externalizing configuration) common to a series of non-functional features large-scale projects.

Absolutely no code generation and does not require XML configuration.

new-project

Group: organize information, general domain inversion

Artifact: Project id

Name: Project name

Package: package name

 

Check the web

 

 

 

 

 

 pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

View Code

Project structure

 

Program starts entrance SpringBootApplication

 

 

 

 

 Startup project

 

 

 

 

 

 tomcat has been launched for the 8080 port

Open Address Access

 

 

 Adding controller

@RestController
public class TestController {
    @RequestMapping(value = "/test",method = RequestMethod.GET)
    public String test(){
        return "test";
    }
}

Open Address 127.0.0.1:8080/test

 

 Project Profiles

yml properties and exist simultaneously, properties onset

application.properties

 YML

How to create yml file https://www.cnblogs.com/ssjf/p/11445404.html

: Number must be spaces

server:
  servlet:
    context-path: /my
  port: 8081

 

 

 

 Get the value from a configuration file

 

 

 

 

 

 Bean can be used to create a way of getting more attributes

@Component
@ConfigurationProperties(prefix = "boy")
public class Boy {
    private String name;
    private Integer age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Boy{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

@RestController
public class TestController {
    @Autowired
    private Boy boy;

    @RequestMapping(value = "/test",method = RequestMethod.GET)
    public String test(){
        return "姓名"+boy.getName()+"年龄"+boy.getAge();
    }
}

 

 Calling multiple profiles