spring boot gradle项目搭建

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使用idea创建gradle工程

    操作大致为：file->new->project->gradle(在左侧选项栏中)

    创建常规以后生成的工程目录如下：

• build
• gradle
  • wrapper
    • gradle-wrapper.jar
    • gradle-wrapper.properties
• src
  • java
  • resources
• test
  • java
  • resources
• build.gradle
• gradlew
• gradlew.bat
• settings.gradle

配置spring boot

    下面需要对两个文件进行编辑：

    build.gradle文件修改后的内容如下,依赖一般是前面是groupid，中间是artifactid，第三个一般是版本。在repositories配置使用阿里云的仓库，避免下载过慢。

plugins {
    id 'java'
    id 'com.gradle.build-scan' version '2.0.2'
    id 'org.springframework.boot' version '2.0.5.release'
    id 'io.spring.dependency-management' version '1.0.7.release'
}

group 'seckill'
version '1.0-snapshot'

sourcecompatibility = 1.8

repositories {
    maven { url "http://maven.aliyun.com/nexus/content/groups/public/" }
    mavencentral()
}

dependencies {
    testcompile group: 'junit', name: 'junit', version: '4.12'

    implementation 'org.springframework.boot:spring-boot-dependencies:2.0.5.release'
    implementation 'org.springframework.boot:spring-boot-starter-web'

    testimplementation 'org.springframework.boot:spring-boot-starter-test'

    components {
        withmodule('org.springframework:spring-beans') {
            allvariants {
                withdependencyconstraints {
                    // need to patch constraints because snakeyaml is an optional dependency
                    it.findall { it.name == 'snakeyaml' }.each { it.version { strictly '1.19' } }
                }
            }
        }
    }
}

buildscan {

    // always accept the terms of service
    termsofserviceurl = 'https://gradle.com/terms-of-service'
    termsofserviceagree = 'yes'

    // always publish a build scan
    publishalways()
}

    setting.gradle文件修改后的内容如下：

rootproject.name = 'seckill'
enablefeaturepreview('improved_pom_support')

编写类

    首先在src/java下生成源码目录com.seckill.spring(相当于com/seckill/spring)

    在src/java下创建程序入口类application.java,其内容如下：

package com.seckill.spring;

import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;

@springbootapplication
public class application {
    public static void main(string[] args) {
        springapplication.run(application.class, args);
    }
}

    在src/java/com.seckill.spring下创建目录controllers，并在controllers目录创建类：helloworld，在其中定义根路由并返回hello world，其代码如下：

package com.seckill.spring.controllers;

import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.requestmethod;
import org.springframework.web.bind.annotation.restcontroller;

import java.util.hashmap;
import java.util.map;

@restcontroller
public class helloworld {
    @requestmapping(value = "/", method = requestmethod.get)
    public map helloworld() {
        map<string, object> ret = new hashmap<>();
        ret.put("ret", "hello world");
        return ret;
    }
}

运行访问

• 运行application类，可以在控制台看到起默认监听在8080端口
• 浏览器访问:localhost:8080,可以看到返回字符串hello world

参考链接

• 1.building spring boot 2 applications with gradle
• 2.learn spring boot
• 3.building a restful web service
• gradle配置阿里云maven镜像仓库地址