曲靖网站网站建设,建站技术布局方式,如何注册天猫网店,商务推广hi 大家好,又见面了,今天继续讲解Spring Boot 文章目录 #x1f436;1.什么是Spring Boot?#x1f436;2.Spring Boot的优势#x1f436;3.Spring Boot项目创建#x1f33c;3.1使用ieda创建#x1f95d;3.1.1下载插件Spring Boot Helper#x1f95d;3.1.2创建项目 1.什么是Spring Boot?2.Spring Boot的优势3.Spring Boot项目创建3.1使用ieda创建3.1.1下载插件Spring Boot Helper3.1.2创建项目 3.2使用网页创建 4.Spring Boot目录工程介绍5.使用Spring Boot写一个最简单的程序6.Spring Boot和Spring做对比 1.什么是Spring Boot?
Spring 的诞⽣是为了简化 Java 程序的开发的⽽ Spring Boot 的诞⽣是为了简化 Spring 程序开发的。 Spring Boot是基于Spring框架的一个轻量级开发框架目的是让开发Spring应用变得更加简单快捷. Spring Boot是Spring脚手架,就是为了快速开发 Spring 框架⽽诞⽣的 比如盖房子用脚手架让盖房子更高效哈哈~
2.Spring Boot的优势
快速集成框架Spring Boot 提供了启动添加依赖的功能⽤于秒级集成各种框架。 内置运⾏容器⽆需配置 Tomcat 等 Web 容器直接运⾏和部署程序。 快速部署项⽬⽆需外部容器即可启动并运⾏项⽬。 可以完全抛弃繁琐的 XML使⽤注解和配置的⽅式进⾏开发。 ⽀持更多的监控的指标可以更好的了解项⽬的运⾏情况。
3.Spring Boot项目创建
3.1使用ieda创建
3.1.1下载插件Spring Boot Helper 3.1.2创建项目 添加依赖 第一次创建Spring Boot项目要加载很久,因为当前Spring Boot项目并没有在本地仓库,而且要保证在创建前配置了maven国内源,如果没有配置,下方为大家提供国内seetings.xml的信息
?xml version1.0 encodingUTF-8?!--
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--!--| This is the configuration file for Maven. It can be specified at two levels:|| 1. User Level. This settings.xml file provides configuration for a single user,| and is normally provided in ${user.home}/.m2/settings.xml.|| NOTE: This location can be overridden with the CLI option:|| -s /path/to/user/settings.xml|| 2. Global Level. This settings.xml file provides configuration for all Maven| users on a machine (assuming theyre all using the same Maven| installation). Its normally provided in| ${maven.conf}/settings.xml.|| NOTE: This location can be overridden with the CLI option:|| -gs /path/to/global/settings.xml|| The sections in this sample file are intended to give you a running start at| getting the most out of your Maven installation. Where appropriate, the default| values (values used when the setting is not specified) are provided.||--
settings xmlnshttp://maven.apache.org/SETTINGS/1.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd!-- localRepository| The path to the local repository maven will use to store artifacts.|| Default: ${user.home}/.m2/repositorylocalRepository/path/to/local/repo/localRepository--!-- interactiveMode| This will determine whether maven prompts you when it needs input. If set to false,| maven will use a sensible default value, perhaps based on some other setting, for| the parameter in question.|| Default: trueinteractiveModetrue/interactiveMode--!-- offline| Determines whether maven should attempt to connect to the network when executing a build.| This will have an effect on artifact downloads, artifact deployment, and others.|| Default: falseofflinefalse/offline--!-- pluginGroups| This is a list of additional group identifiers that will be searched when resolving plugins by their prefix, i.e.| when invoking a command line like mvn prefix:goal. Maven will automatically add the group identifiers| org.apache.maven.plugins and org.codehaus.mojo if these are not already contained in the list.|--pluginGroups!-- pluginGroup| Specifies a further group identifier to use for plugin lookup.pluginGroupcom.your.plugins/pluginGroup--/pluginGroups!-- proxies| This is a list of proxies which can be used on this machine to connect to the network.| Unless otherwise specified (by system property or command-line switch), the first proxy| specification in this list marked as active will be used.|--proxies!-- proxy| Specification for one proxy, to be used in connecting to the network.|proxyidoptional/idactivetrue/activeprotocolhttp/protocolusernameproxyuser/usernamepasswordproxypass/passwordhostproxy.host.net/hostport80/portnonProxyHostslocal.net|some.host.com/nonProxyHosts/proxy--/proxies!-- servers| This is a list of authentication profiles, keyed by the server-id used within the system.| Authentication profiles can be used whenever maven must make a connection to a remote server.|--servers!-- server| Specifies the authentication information to use when connecting to a particular server, identified by| a unique name within the system (referred to by the id attribute below).|| NOTE: You should either specify username/password OR privateKey/passphrase, since these pairings are| used together.|serveriddeploymentRepo/idusernamerepouser/usernamepasswordrepopwd/password/server--!-- Another sample, using keys to authenticate.serveridsiteServer/idprivateKey/path/to/private/key/privateKeypassphraseoptional; leave empty if not used./passphrase/server--/servers!-- mirrors| This is a list of mirrors to be used in downloading artifacts from remote repositories.|| It works like this: a POM may declare a repository to use in resolving certain artifacts.| However, this repository may have problems with heavy traffic at times, so people have mirrored| it to several places.|| That repository definition will have a unique id, so we can create a mirror reference for that| repository, to be used as an alternate download site. The mirror site will be the preferred| server for that repository.|--mirrorsmirroridalimaven/idnamealiyun maven/nameurlhttp://maven.aliyun.com/nexus/content/groups/public//urlmirrorOfcentral/mirrorOf /mirror!-- mirror| Specifies a repository mirror site to use instead of a given repository. The repository that| this mirror serves has an ID that matches the mirrorOf element of this mirror. IDs are used| for inheritance and direct lookup purposes, and must be unique across the set of mirrors.|mirroridmirrorId/idmirrorOfrepositoryId/mirrorOfnameHuman Readable Name for this Mirror./nameurlhttp://my.repository.com/repo/path/url/mirror--/mirrors!-- profiles| This is a list of profiles which can be activated in a variety of ways, and which can modify| the build process. Profiles provided in the settings.xml are intended to provide local machine-| specific paths and repository locations which allow the build to work in the local environment.|| For example, if you have an integration testing plugin - like cactus - that needs to know where| your Tomcat instance is installed, you can provide a variable here such that the variable is| dereferenced during the build process to configure the cactus plugin.|| As noted above, profiles can be activated in a variety of ways. One way - the activeProfiles| section of this document (settings.xml) - will be discussed later. Another way essentially| relies on the detection of a system property, either matching a particular value for the property,| or merely testing its existence. Profiles can also be activated by JDK version prefix, where a| value of 1.4 might activate a profile when the build is executed on a JDK version of 1.4.2_07.| Finally, the list of active profiles can be specified directly from the command line.|| NOTE: For profiles defined in the settings.xml, you are restricted to specifying only artifact| repositories, plugin repositories, and free-form properties to be used as configuration| variables for plugins in the POM.||--profiles!-- profile| Specifies a set of introductions to the build process, to be activated using one or more of the| mechanisms described above. For inheritance purposes, and to activate profiles via activatedProfiles/| or the command line, profiles have to have an ID that is unique.|| An encouraged best practice for profile identification is to use a consistent naming convention| for profiles, such as env-dev, env-test, env-production, user-jdcasey, user-brett, etc.| This will make it more intuitive to understand what the set of introduced profiles is attempting| to accomplish, particularly when you only have a list of profile ids for debug.|| This profile example uses the JDK version to trigger activation, and provides a JDK-specific repo.profileidjdk-1.4/idactivationjdk1.4/jdk/activationrepositoriesrepositoryidjdk14/idnameRepository for JDK 1.4 builds/nameurlhttp://www.myhost.com/maven/jdk14/urllayoutdefault/layoutsnapshotPolicyalways/snapshotPolicy/repository/repositories/profile--!--| Here is another profile, activated by the system property target-env with a value of dev,| which provides a specific path to the Tomcat instance. To use this, your plugin configuration| might hypothetically look like:|| ...| plugin| groupIdorg.myco.myplugins/groupId| artifactIdmyplugin/artifactId|| configuration| tomcatLocation${tomcatPath}/tomcatLocation| /configuration| /plugin| ...|| NOTE: If you just wanted to inject this configuration whenever someone set target-env to| anything, you could just leave off the value/ inside the activation-property.|profileidenv-dev/idactivationpropertynametarget-env/namevaluedev/value/property/activationpropertiestomcatPath/path/to/tomcat/instance/tomcatPath/properties/profile--/profiles!-- activeProfiles| List of profiles that are active for all builds.|activeProfilesactiveProfilealwaysActiveProfile/activeProfileactiveProfileanotherAlwaysActiveProfile/activeProfile/activeProfiles--
/settings这样就创建成功了!
3.2使用网页创建
我们不仅可以采用idea创建spring boot项目,还可以采用网页创建 在浏览器搜索页面写入start.spring.io 创建成功了,然后在idea打开就好了 创建好之后要删除无用目录
4.Spring Boot目录工程介绍 快速添加依赖的办法 使用edit starter插件 然后点击要添加的依赖,点击add即可添加依赖
5.使用Spring Boot写一个最简单的程序
package com.example.demo;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
RestController
RequestMapping(/user)
public class UserController {RequestMapping(/sayhi)public String sayHi(){return Hi,Spring Boot.;}
}点击运行 Spring Boot设计思想是约定⼤于配置类上标注 SpringBootApplication 就可以启动 Spring Boot 项⽬ (下期解释约定大于配置)
6.Spring Boot和Spring做对比
Spring Boot是基于Spring框架的一个轻量级开发框架目的是让开发Spring应用变得更加简单快捷。Spring是一个完整的框架包含了多个模块如Spring MVC、Spring Security等提供了广泛的功能支持。
Spring BootSpring开发难度Spring Boot简化了Spring应用的开发不需要配置大量的XML文件可以使用注解和自动配置。Spring需要使用XML和注解配置需要更多的配置和代码编写。项目依赖Spring Boot提供了一个项目启动器edit starter包含了应用开发所需的常用依赖可以快速构建应用Spring需要手动配置依赖需要更多的时间和精力。应用测试Spring Boot支持嵌入式服务器可以很方便地进行应用测试Spring需要手动启动服务器进行测试比较复杂。性能Spring Boot在性能方面与Spring的表现相似但Spring Boot可以更快地构建和运行应用。和Spring Boot 类似适用场景Spring Boot适合快速构建小型项目和原型应用Spring适合大型项目和需要更多功能支持的应用。
关于Spring Boot项目的创建和使用我们今天就讲解到这里,我们下期将继续深入学习它的其他知识,下期见咯
