一個簡單的spring-boot例子

weixin_34402408發表於2018-02-25
Springboot

1.下載Maven：

https://maven.apache.org/download.cgi

2.解壓放入Idea外掛目錄

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配置外掛

3.配置Maven環境變數

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環境變數

4.建立專案

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新建專案

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配置專案

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配置專案

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配置專案

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專案結構

5.預設配置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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.chao.spring</groupId>
    <artifactId>spring-boot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>spring-boot</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.10.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </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>

6.編寫測試程式碼：

@RestController
@SpringBootApplication
public class Application {

    @RequestMapping("/")
    String index() {
        return "Hello Spring Boot";
    }

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

7.配置application.properties：

server.port=8000
server.tomcat.uri-encoding=utf-8
#MySQL
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=root

8.執行專案：

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啟動專案

9.訪問專案：

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執行示例

10.配置jar：

    <build>
        <finalName>spring-boot</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                    <mainClass>com.chao.spring.Application</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

11.終端執行打包：

mvn package
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打包

12.打包出錯時（二選一）：

  • 跳過測試打包：
mvn clean package -Dmaven.test.skip=true
  • 新增外掛：
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.12.4</version>
                <configuration>
                    <skipTests>true</skipTests>
                </configuration>
            </plugin>

13.執行jar專案：

java -jar target\spring-boot.jar

附完整pox.xml配置：

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.chao.spring</groupId>
    <artifactId>spring-boot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>spring-boot</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.10.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>

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

    <build>
        <finalName>spring-boot</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                    <mainClass>com.chao.spring.Application</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

附完整application.properties配置：

server.port=8000
server.tomcat.uri-encoding=utf-8
#MySQL
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=root
#Spring Data JPA
spring.jpa.database=MYSQL
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
# Naming strategy
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
# stripped before adding them to the entity manager)
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
#檢視層控制
spring.mvc.view.prefix=classpath:/templates/
spring.mvc.view.suffix=.html
spring.mvc.static-path-pattern=/static/**

專案後臺執行：

上面的執行方式，只要控制檯關閉，服務就不能訪問了。下面我們使得 jar 包在後臺執行。

java -jar target\spring-boot.jar > log.file 2>&1 &
對於上面的命令的解釋：

bash 中 0、1、2 三個數字分別代表 STDIN_FILENO 、 STDOUT_FILENO 、STDERR_FILENO ，即標準輸入（一般是鍵盤），標準輸出（一般是螢幕，準確的說是使用者終端控制檯），標準錯誤（出錯資訊輸出）。

關掉後臺執行的 Spring Boot 的服務：

ps aux | grep spring | xargs kill -9

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