项目结构

整体项目结构与环境搭建,我使用gradle开发，视频中是maven。且我使用的各种jar版本是spring boot2的

刚开始这里项目结构没有认真看视频，在开发完demo项目之后
发现依赖browser项目，定义的安全配置完全不生效。
这里重新来认真学习下分模块。
所以如果在demo里面的笔记有关依赖相关的以这里为主。问题也不大

spring-security # 根目录
security-app # app相关特定代码
spring-browser # 浏览器完全特定代码
spring-core # 核心业务逻辑
security-demo # 用来写例子，最开始的restfull相关的几节课程都是在该项目中编写讲解的；引用core的依赖配置

依赖关系为：
demo 依赖 browser和app
browser和app 依赖core

这里提前说下：使用idea或则spring.io界面话创建项目的话会自动创建下面的所说的内容。
这里只是记录这个内容从哪里来的

依赖基础知识

spring https://platform.spring.io/platform/#quick-start

该页面start处，会给出一个示例如下所示,这个是针对gradle的；
该配置的作用是：管理版本依赖，在写spring相关jar包依赖的时候可以不用写版本号，防止冲突，由这个配置来管理

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'io.spring.gradle:dependency-management-plugin:1.0.0.RELEASE'
    }
}

apply plugin: 'io.spring.dependency-management'

dependencyManagement {
    imports {
        mavenBom 'io.spring.platform:platform-bom:Cairo-SR3'
    }
}

spring cloud : https://projects.spring.io/spring-cloud/#quick-start

buildscript {
    ext {
        springBootVersion = '2.0.1.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'spring-boot'

dependencyManagement {
  imports {
    mavenBom ':spring-cloud-dependencies:Finchley.SR1'
  }
}

dependencies {
    compile ':spring-cloud-starter-config'
    compile ':spring-cloud-starter-eureka'
}

开始项目配置

spring-security/settings.gradle

rootProject.name = 'spring-security'
include 'security-app'
include 'security-browser'
include 'security-core'
include 'security-demo'

spring-security/build.gradle

buildscript {
    ext {
        springBootVersion = '2.0.3.RELEASE'
    }
    repositories {
        maven { url 'https://repo.spring.io/libs-snapshot' }
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

// 所有项目都配置
allprojects {
    apply plugin: 'java'
    apply plugin: 'idea'
    apply plugin: 'eclipse'
    apply plugin: 'io.spring.dependency-management'

    group = 'cn.mrcode.imooc.springsecurity'
    version = '0.0.1-SNAPSHOT'
    sourceCompatibility = 1.8
}

// 所有子项目都配置
subprojects {
    buildscript {
        ext {
            springBootVersion = '2.0.3.RELEASE'
        }
        repositories {
            mavenCentral()
        }
        dependencies {
            classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
        }
    }

    apply plugin: 'org.springframework.boot'


    repositories {
        // 增加n多数据源，加快下载速度
        maven { url "http://maven.aliyun.com/nexus/content/groups/public" }
        maven { url 'https://repo.spring.io/libs-snapshot' }
        maven { url "https://maven.repository.redhat.com/ga/" }
        maven { url "http://maven.nuiton.org/nexus/content/groups/releases/" }
        maven { url "https://repository.cloudera.com/artifactory/cloudera-repos/" }
        mavenCentral()
    }


    ext {
        springCloudVersion = 'Finchley.RELEASE'
    }

    dependencies {
        testCompile('org.springframework.boot:spring-boot-starter-test')
    }

    dependencyManagement {
        // 这个可能是一个补充还是第三方的依赖版本管理，在配置core的时候会用到这个配置
        imports {
            mavenBom 'io.spring.platform:platform-bom:Cairo-SR3'
        }
        // 管理spring大部分配置的依赖版本
        imports {
            mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
        }
    }
}

security-core/build.gradle

dependencies {
    testCompile('org.springframework.boot:spring-boot-starter-test')
    // security自动配置
    // 以及包含了 security 、spring-security-oauth2-autoconfigure 、spring-boot-starter-actuator
    // 包含了  spring-boot-starter-web
    // security 5+ 去掉了可以在配置文件中关闭security的配置，所以这里在视频中配置关闭的时候
    // 我们在这里注释掉依赖就可以了
    // compile('org.springframework.cloud:spring-cloud-starter-security')
    // redis自动配置
    compile('org.springframework.boot:spring-boot-starter-data-redis')
    // jdbc数据库数据库
    compile('org.springframework.boot:spring-boot-starter-jdbc')
    // 在本环境中会引用 5.1.46这个包
    runtime('mysql:mysql-connector-java')

    // 切面依赖
    compile("org.springframework.boot:spring-boot-starter-aop")

    // ~commons工具包==========================
    compile('org.apache.commons:commons-lang3')
    // 打开idea 右侧的gradle面板可以看到默认依赖了collections 3.2.2
    // 在maven仓库页面看到依赖可以升级为collections4:4.2
    compile('commons-beanutils:commons-beanutils')
    compile('commons-io:commons-io')
    // 这个配置没有版本号被之前引入的spring的依赖插件管理，所以需要自己手动增加
    compile('org.apache.commons:commons-collections4:4.2')

    // ~ org.springframework.social 第三方登录qq登录，微信登录等==========================
    compile('org.springframework.social:spring-social-config')
    compile('org.springframework.social:spring-social-security')
    compile('org.springframework.social:spring-social-web')
}

security-browser/build.gradle

dependencies {
    compile project(':security-core')
    // 该项目用来做浏览器端的所以需要有session
    // 提供集群环境下的session管理,也没有被管理到，需要自己添加
    //如果在启动的时候报错，可以通过配置 yml文件中 spring: session: store-type: none 关闭
//    compile('org.springframework.session:spring-session:1.3.3.RELEASE')
}

security-app/build.gradle

dependencies {
    compile project(':security-core')
}

security-demo/build.gradle

dependencies {
    compile project(':security-browser')
}

Hello Word

编写入口启动类

com.example.demo.DemoApplication

@SpringBootApplication
@RestController
public class DemoApplication {

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

    @GetMapping("/hello")
    public String hello() {
        return "hello spring security";
    }
}

启动会发现报错了。


***************************
APPLICATION FAILED TO START
***************************

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class


Action:

Consider the following:
    If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
    If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

发现报错的是 datasource的错误

这是因为在 core项目中添加了 compile('org.springframework.boot:spring-boot-starter-jdbc') jdbc的自动配置依赖

配置好数据源

application.yml

spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/imooc-demo?useUnicode=yes&characterEncode=utf-8
    username: root
    password: 123456

因为这篇笔记中的项目依赖重新看视频弄过，如果报错以下类容;看消息最下面的也会发现是因为数据库相关的配置不存在；
* 即使是在core中application.yml中配置了数据源，也不会被demo所继承使用*

Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.health.HealthEndpoint]: Factory method 'healthEndpoint' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration': Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorAutoConfiguration$$EnhancerBySpringCGLIB$$80a065e2]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource': Post-processing of FactoryBean's singleton object failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class

关于依赖项目没有被扫描到的问题

该问题在讲解security-browser项目的时候会遇到
比如demo的依赖的browser的项目，启动demo后，发现security-browser中配置的MyUserDetailsService没有被扫描到，包括定义的测试api都没有生效

目前百度了下这样解决

@SpringBootApplication
@RestController
@EnableSwagger2
public class DemoApplication {

    public static void main(String[] args) {
        Class[] applications = new Class[2];
        // 把SecurityBrowserApplication也加入运行配置
        applications[0] = SecurityBrowserApplication.class;
        applications[1] = DemoApplication.class;
        SpringApplication.run(applications, args);
    }

对所有项目增加该配置，解决依赖模块项目打包失败的问题
如果在上面那样写了依赖别的项目的启动类，如果没有配置下面的配置，那么打包会提示找不到符号

//这里一定得要。在多模块下，不然编译失败，因为不会把信赖模块给打包。
// 解决依赖模块项目打包失败的问题
jar {
    enabled = true
}

不能扫描子包问题解决方案二：

// 参考资料：https://blog.csdn.net/l1h2l3/article/details/73484806
// 写上你要扫描的子包路径
@SpringBootApplication(scanBasePackages={"com.example.demo","cn.mrcode.imooc.springsecurity.securitybrowser"})

【Spring Security OAuth2笔记系列】- 项目结构

项目结构

依赖基础知识

开始项目配置

Hello Word

关于依赖项目没有被扫描到的问题

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