搭建簡易的springboot項目

我對springboot也是初學者，把自己搭建的過程整理下來，本質原理自己還沒有弄明白
工具：eclipse maven，默認工具已經準備好，開始搭建springboot項目
1、點擊New-Other-Maven，就會出現下面的圖
2、點擊簡易搭建選項，點擊next

3、輸入maven所需的group id，artifact id version …最後點擊finish

4、修改pom.xml文件

添加springboot所需要的依賴，修改後的pom文件如下，其中添加了日誌，json常用依賴（可以不加）

<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.demo</groupId>
  <artifactId>springboot_demo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>springboot_demo</name>
  <description>springboot_demo</description>
<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.4.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>
	<repositories>
		<repository>
			<id>cloudera</id>
			<url>https://repository.cloudera.com/artifactory/cloudera-repos/</url>
		</repository>
	</repositories>
	<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>
		<!-- 支持web的模塊： -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.16</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>1.7.5</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>1.7.5</version>
		</dependency>
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.47</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
			<version>4.5.2</version>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
</project>

5、update Maven 依賴
添加完上述的pom文件之後，出現了下面的錯誤

6、鼠標右鍵項目，選擇Maven-update project 上面的紅叉就沒了
7、至此簡易的maven工程就搭建好了，下面添加springboot的相關代碼
8、在src/main.resources下新建一個配置文件New-Other-file，命名爲application.properties，裏面填寫server.port=8080

9、添加controller類，注意紅框部分需要加上


10、上面兩個類的代碼

package com.demo.controller;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@SpringBootApplication
@RequestMapping(value = "demo/v1/")
public class Controller {

	@RequestMapping(value = "test", method = RequestMethod.GET)
	public String test(@RequestParam(value = "name", required = false) String name) {
		if(name==null){
			name = "friend";
		}
		return String.format("Hello %s ! Glad to see you !", name);

	}
}

package com.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class RestAPIMain {

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

}

11、啓動RestAPIMain 這個類
12、在瀏覽器中輸入：
http://localhost:8080/demo/v1/test
返回

帶參數的：輸入
http://localhost:8080/demo/v1/test?name=henry

示例代碼鏈接
鏈接：https://pan.baidu.com/s/1i2K9yixZhxQexFADiGwL8A
提取碼：93or
複製這段內容後打開百度網盤手機App，操作更方便哦