项目架构经验之谈之SpringBoot单体应用架构分享(一)-项目框架篇

淡淡的烟草味﹌ 2023-06-27 15:58 123阅读 0赞

### 文章目录 ###

*  1.为什么要写这篇文章
 *  2.单体应用的好处与坏处
 *  3.技术选项
 *  4.框架架构实战
 *   *  4.1 pom文件
     *  4.2 启动类
     *   *  4.2.1 启动回调设置
     *  4.3 yml配置文件
     *  4.4 项目统一父Controoller
     *  4.5 项目统一返回结果
     *  4.6 全局主键生成器-UUID生成
     *  4.7 解决跨域问题
     *  4.8 解决静态资源映射问题
     *  4.9 swagger配置
     *  4.10 项目统一返回信息枚举
     *  4.11 mybatis 慢查询切面

# 1.为什么要写这篇文章 #

在这个java开发框架很多的年代里面，如何才能搭建一个易用的单体开发框架 (该文章只是本人的经验之谈，若感觉太菜，可以关闭本文)

# 2.单体应用的好处与坏处 #

好处

*  仅需要一个war或者jar，执行即可，无需再部署一个前端，例如现在java+vue，vue需要NGINX或APATHE去部署

坏处

*  不利于后期的版本递增，代码容易冗余
 *  不利于多人开发，易冲突
 *  一旦服务挂了，所有功能都无法使用

# 3.技术选项 #

本文的技术选项`暂时[后期文章会持续的升级技术栈]`使用如下技术栈

*  SpringBoot
 *  MyBatis Plus
 *  Druid
 *  MySql
 *  lombok
 *  swagger UI
 *  commons 工具插件
 *  hutool 工具插件

# 4.框架架构实战 #

## 4.1 pom文件 ##

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.2.2.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.cxl.fm</groupId>
        <artifactId>spring-boot-cxl-starter</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>spring-boot-cxl-starter</name>
        <description>【SpringBoot-CXL-快速开发脚手架】</description>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
            <junit.version>4.12</junit.version>
            <xstream.version>1.4.9</xstream.version>
            <fastjson.version>1.2.15</fastjson.version>
            <commons-io.version>2.5</commons-io.version>
            <commons-fileupload.version>1.3.3</commons-fileupload.version>
            <hibernate-validator.version>6.0.10.Final</hibernate-validator.version>
            <metadata-extractor.version>2.6.2</metadata-extractor.version>
        </properties>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-thymeleaf</artifactId>
                <version>2.1.6.RELEASE</version>
            </dependency>
    
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-aop</artifactId>
            </dependency>
    
            
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.6</version>
            </dependency>
            
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>3.1.2</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid-spring-boot-starter</artifactId>
                <version>1.1.9</version>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <scope>runtime</scope>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.integration</groupId>
                <artifactId>spring-integration-core</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-configuration-processor</artifactId>
                <optional>true</optional>
            </dependency>
    
            <dependency>
                <groupId>cn.hutool</groupId>
                <artifactId>hutool-all</artifactId>
                <version>4.6.1</version>
            </dependency>
            
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
            </dependency>
            <dependency>
                <groupId>io.netty</groupId>
                <artifactId>netty-all</artifactId>
                <version>4.1.25.Final</version>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.58</version>
            </dependency>
    
            
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger2</artifactId>
                <version>2.6.1</version>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger-ui</artifactId>
                <version>2.6.1</version>
            </dependency>
            <dependency>
                
                <groupId>org.reflections</groupId>
                <artifactId>reflections</artifactId>
                <version>0.9.11</version>
            </dependency>
    
            
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons-io.version}</version>
            </dependency>
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>${commons-fileupload.version}</version>
            </dependency>
            <dependency>
                <groupId>commons-codec</groupId>
                <artifactId>commons-codec</artifactId>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
            </dependency>
            <dependency>
                <groupId>commons-configuration</groupId>
                <artifactId>commons-configuration</artifactId>
                <version>1.10</version>
            </dependency>
            
            <dependency>
                <groupId>io.nervous</groupId>
                <artifactId>juint</artifactId>
                <version>0.1.0</version>
            </dependency>
    
    
    
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-redis</artifactId>
            </dependency>
    
    
    
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

## 4.2 启动类 ##

@SpringBootApplication
    @EnableAutoConfiguration
    @EnableWebMvc
    @ServletComponentScan(basePackages = "com.cxl.fm")
    public class SpringBootCxlStarterMain  implements ApplicationRunner { 
    
        @Value("${server.port}")
        private String serverPort;
    
        public static void main(String[] args) { 
            SpringApplication.run(SpringBootCxlStarterMain.class, args);
        }
    
        @Override
        public void run(ApplicationArguments args) throws Exception { 
            System.out.println("api 接口启动完成 = http://localhost:"+serverPort);
        }
    }

### 4.2.1 启动回调设置 ###

通过在启动类中，实现`ApplicationRunner`接口，将会重写`run`方法，该run方法即为启动后执行的方法

## 4.3 yml配置文件 ##

# ================== server config ==================
    server:
      port: 8088
      tomcat:
        max-threads: 50000
        max-connections: 50000000
        uri-encoding: UTF-8
    
    
    # =====================================================
    
    
    
    
    # ================ spring datasource config
    
    sql:
      sqlIp: 127.0.0.1
      sqlPort: 3306
      sqlDbName: test
      sqlUserName: root
      sqlPassWord: root
    
    
    spring:
      datasource:
        driverClassName: com.mysql.jdbc.Driver
        url: jdbc:mysql://${ sql.sqlIp}:${ sql.sqlPort}/${ sql.sqlDbName}?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true
        username: ${ sql.sqlUserName}
        password: ${ sql.sqlPassWord}
        type: com.alibaba.druid.pool.DruidDataSource
        druid:
          stat-view-servlet:
            url-pattern: /druid/*
            reset-enable: true
            login-username: admin
            login-password: admin
          validation-query: SELECT 'x'
      main:
        allow-bean-definition-overriding: true
    
      # hymeleaf
      thymeleaf:
        mode: LEGACYHTML5
        cache: false
    
      redis:
        host: 127.0.0.1
        port: 6379
        password:
        jedis:
          pool:
            max-active: 8
            max-wait: -1
            max-idle: 500
            min-idle: 0
        lettuce:
          shutdown-timeout: 0
    
    
    
    
      # http
      http:
        encoding:
          force: true
          charset: UTF-8
          enabled: true
    
    
    
    
    mybatis-plus:
    
      # MyBatis 配置文件位置，如果您有单独的 MyBatis 配置，请将其路径配置到 configLocation 中。
      # config-location: classpath:mybatis-config.xml
      # MyBatis Mapper 所对应的 XML 文件位置，如果您在 Mapper 中有自定义方法
      mapper-locations: classpath:mapper/*.xml
      # MyBaits 别名包扫描路径，通过该属性可以给包中的类注册别名 实体扫描，多个package用逗号或者分号分隔
      type-aliases-package:  com.zqg.zhuzhu.po
      # # 配置扫描通用枚举 # 支持统配符 * 或者 ; 分割
      #type-enums-package: com.abbottliu.sys.enums,com.abbottliu.enums
      # 启动时是否检查 MyBatis XML 文件的存在，默认不检查
      check-config-location: true
      # ExecutorType.SIMPLE：该执行器类型不做特殊的事情，为每个语句的执行创建一个新的预处理语句（PreparedStatement）
      # ExecutorType.REUSE：该执行器类型会复用预处理语句（PreparedStatement）
      # ExecutorType.BATCH：该执行器类型会批量执行所有的更新语句
      executor-type: simple
      configuration:
        # 是否开启自动驼峰命名规则（camel case）映射
        map-underscore-to-camel-case: true
        #配置JdbcTypeForNull, oracle数据库必须配置
        jdbc-type-for-null: null
        #log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
    
      global-config:
        db-config:
          # 数据库类型,默认值为未知的数据库类型
          logic-delete-value: close #逻辑删除
          logic-not-delete-value: open # 逻辑打开
        banner: false
    
    
    # ================== ?????????? ==================
    management:
      security:
        enabled: false
    # ===================================================
    
    
    
    
    # ================== mvc config ==================
    mvc:
      static-path-pattern: /**
    
    # ===================================================
    
    
    
    # =================== project info ================
    project:
      info:
        name:
        server:
          port: ${ server.port}
    # ===================================================

在这个里面，配置了端口等属性，单独把sql的参数抽取出来，方便后期维护

## 4.4 项目统一父Controoller ##

/** * 构造器父类 * @author * */
    public class BaseController { 
    
    	/** * 返回成功消息 * @param obj 返回空的消息内容 * @return */
    	@SuppressWarnings({  "unchecked", "rawtypes" })
    	public HttpFmResult sendSuccessMsg(){ 
    		return new HttpFmResult(HttpResultEnums.BUS_ENUM.SUCCESS.KEY, HttpResultEnums.BUS_ENUM.SUCCESS.VALUE,null);
    	}
    	
    	/** * 返回成功消息 * @param obj 消息内容 * @return */
    	@SuppressWarnings({  "unchecked", "rawtypes" })
    	public HttpFmResult sendSuccessMsg(Object obj){ 
    		return new HttpFmResult(HttpResultEnums.BUS_ENUM.SUCCESS.KEY, HttpResultEnums.BUS_ENUM.SUCCESS.VALUE,obj);
    	}
    
    
    
    	/** * 返回接口调用失败消息 * @return */
    	@SuppressWarnings({  "unchecked", "rawtypes" })
    	public HttpFmResult sendFailedMsg(){ 
    		return new HttpFmResult(HttpResultEnums.BUS_ENUM.API_ERROR.KEY, HttpResultEnums.BUS_ENUM.API_ERROR.VALUE);
    	}
    	/** * 返回失败消息 * @param key 消息枚举key * @param obj 消息内容 * @return */
    	@SuppressWarnings({  "unchecked", "rawtypes" })
    	public HttpFmResult sendFailedMsg(String key, Object obj){ 
    		return new HttpFmResult(key, HttpResultEnums.BUS_ENUM.get(key).VALUE,obj);
    	}
    	@SuppressWarnings({  "unchecked", "rawtypes" })
    	public HttpFmResult sendFailedMsg(String key){ 
    		return new HttpFmResult(key, HttpResultEnums.BUS_ENUM.get(key).VALUE,null);
    	}
    
    }

## 4.5 项目统一返回结果 ##

@ApiModel(value="公共输出对象",description="公共输出对象")
    @Getter
    @Setter
    @JsonIgnoreProperties(ignoreUnknown = true)
    @ToString
    public class HttpFmResult<T>{ 
    
    	@ApiModelProperty(value="输出编码，如：0000",name="code",example="0000")
        private String code;
    	
    	@ApiModelProperty(value="输出消息(String)",name="msg",example="操作成功")
        private String msg;
    	
    	@ApiModelProperty(value="输出对象(Object)",name="data")
        private T data;
    	
    	
        public HttpFmResult(String code, String msg, T data) { 
            this.code = code;
            this.msg = msg;
            this.data = data;
        }
        public HttpFmResult(HttpResultEnums.BUS_ENUM  bus_enum, T data) { 
            this.code = bus_enum.KEY;
            this.msg = bus_enum.VALUE;
            this.data = data;
        }
        
        public HttpFmResult(String code, String msg) { 
            this.code = code;
            this.msg = msg;
        }
    }

## 4.6 全局主键生成器-UUID生成 ##

public class UuidGenderUtils { 
        /** * 获得指定数目的UUID * @param number int 需要获得的UUID数量 * @return String[] UUID数组 */
        public static String[] getUUID(int number){ 
            if(number < 1){ 
                return null;
            }
            String[] retArray = new String[number];
            for(int i=0;i<number;i++){ 
                retArray[i] = getUUID();
            }
            return retArray;
        }
    
        /** * 获取系统用户id * @return */
        public static String getUUID(){ 
            String uuid = UUID.randomUUID().toString();
            return uuid.replaceAll("-", "");
        }
    
    }

这里至于为什么要使用UUID，就不说了

## 4.7 解决跨域问题 ##

@Configuration
    public class ClassCorsConfig { 
        private CorsConfiguration buildConfig() { 
            CorsConfiguration corsConfiguration =new CorsConfiguration();
           corsConfiguration.addAllowedOrigin("*"); // 1
           corsConfiguration.addAllowedHeader("*"); // 2
           corsConfiguration.addAllowedMethod("*"); // 3
            return corsConfiguration;
        }
     
        @Bean
        public CorsFilter corsFilter() { 
    // UrlBasedCorsConfigurationSource source= new UrlBasedCorsConfigurationSource();
    // source.registerCorsConfiguration("/**", buildConfig()); // 4
           final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
           final CorsConfiguration config = new CorsConfiguration(); config.setAllowCredentials(true);
     	  //允许cookies跨域 
     	  config.addAllowedOrigin("*");
     	 // 允许向该服务器提交请求的URI，*表示全部允许。。这里尽量限制来源域，比如http://xxxx:8080 ,以降低安全风险。。
     	  config.addAllowedHeader("*");
     	  // 允许访问的头信息,*表示全部 config.setMaxAge(18000L);
     	 
     	  //预检请求的缓存时间（秒），即在这个时间段里，对于相同的跨域请求不会再预检了
     	  config.addAllowedMethod("*");
     	  //允许提交请求的方法，*表示全部允许，也可以单独设置GET、PUT等 config.addAllowedMethod("HEAD");
     	  config.addAllowedMethod("GET");
     	  // 允许Get的请求方法
     	  config.addAllowedMethod("PUT");
     	  config.addAllowedMethod("POST");
     	  config.addAllowedMethod("DELETE");
     	  config.addAllowedMethod("PATCH"); 
     	  source.registerCorsConfiguration("/**",config); 
     	  return new CorsFilter(source);
            
        }
    }

记住也把下面的类帖进去

/** * spring boot 方式--全局 * 我认为比较优雅的解决方案 * 针对对某个Controller类或者方法可使用@CrossOrigin注解 */
    @Configuration
    public class WebConfig implements WebMvcConfigurer { 
        @Override
        public void addCorsMappings(CorsRegistry registry) { 
            registry.addMapping("/**")
            .allowedOrigins("*")
            .allowedMethods("GET,POST,PUT,DELETE,HEAD,OPTIONS")
            .allowedHeaders("*")
            .allowCredentials(false).maxAge(3600);
        }
    }

## 4.8 解决静态资源映射问题 ##

@Configuration
    public class ServletContextConfig extends WebMvcConfigurationSupport { 
     
    	  /** * 发现如果继承了WebMvcConfigurationSupport，则在yml中配置的相关内容会失效。 * 需要重新指定静态资源 * @param registry */
        @Override
        public void addResourceHandlers(ResourceHandlerRegistry registry) { 
            registry.addResourceHandler("/**").addResourceLocations("classpath:/static/");
            registry.addResourceHandler("swagger-ui.html")
            .addResourceLocations("classpath:/META-INF/resources/");
            registry.addResourceHandler("/webjars/**")
            .addResourceLocations("classpath:/META-INF/resources/webjars/");
            super.addResourceHandlers(registry);
        }
     
     
        /** * 配置servlet处理 */
        @Override
        public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { 
            configurer.enable();
        }
    }

## 4.9 swagger配置 ##

@EnableSwagger2
    @Configuration
    public class Swagger2Config implements WebMvcConfigurer { 
    
        /** * 添加资源文件映射 * * @param registry */
        @Override
        public void addResourceHandlers(ResourceHandlerRegistry registry) { 
            registry.addResourceHandler("/webjars/**")
                    .addResourceLocations("classpath:/META-INF/resources/webjars/");
            registry.addResourceHandler("swagger-ui.html")
                    .addResourceLocations("classpath:/META-INF/resources/");
        }
    
        @Bean
        public Docket createRestApi() { 
            return new Docket(DocumentationType.SWAGGER_2)
                    .apiInfo(apiInfo())
                    .select()
                    .apis(RequestHandlerSelectors.withClassAnnotation(Api.class))
                    .paths(PathSelectors.any()).build();
        }
    
        private ApiInfo apiInfo() { 
            return new ApiInfoBuilder()
                    .title("接口稳定")
                    .description("")
                    .contact("cxl")
                    .version("1.0").build();
        }
    
    }

## 4.10 项目统一返回信息枚举 ##

public class HttpResultEnums { 
    	
    	
    	/** * 业务代码枚举 * @author * */
    	public static enum BUS_ENUM { 
    	 	SUCCESS("0000", "success"),
    	 	LACK_PARAMETER("0001","缺少必要参数"),
    	 	INTERFACE_REEOR("9000","外部接口请求错误"),
    	 	DB_ERROR("9001","数据库异常"),
    	 	NET_ERROR("9002","内部网络异常"),
    	 	API_ERROR("9003","外部接口请求错误"),
    		//文件相关
    		FILE_NOTFONUD_ERROR("9004","文件未找到"),
    		FILE_TYPE_ERROR("9005","文件格式错误"),
    		//系统错误相关
    	 	SYSTEM_ERROR("9999","内部系统错误"),
    		LOGIN_ERROR("4001","用户账户密码输出错误")
    	 	;
    		public String KEY;
    		public String VALUE;
    		private BUS_ENUM(String key, String value) { 
    			this.KEY = key;
    			this.VALUE = value;
    		}
    		public static BUS_ENUM get(String key) { 
    			BUS_ENUM[] values = BUS_ENUM.values();
    			for (BUS_ENUM object : values) { 
    				if (object.KEY == key) { 
    					return object;
    				}
    			}
    			return null;
    		}
    	}
    }

这里可以自定义，这里说明下，为什么要用大写，因为在调用的时候，实现了大小写统一，如果自己有强迫症，自己改成小写

## 4.11 mybatis 慢查询切面 ##

@Aspect
    @Component
    @Slf4j
    public class MapperAspect { 
    
        @AfterReturning("execution(* com.cxl.fm.business.*.*.*Dao.*(..))")
        public void logServiceAccess(JoinPoint joinPoint) { 
            log.info("Completed: " + joinPoint);
        }
    
    
        /** * 监控com.cxl.fm.business..*Mapper包及其子包的所有public方法 */
        @Pointcut("execution(* com.cxl.fm.business.*.*.*Mapper.*(..))")
        private void pointCutMethod() { 
        }
    
        /** * 声明环绕通知 * * @param pjp * @return * @throws Throwable */
        @Around("pointCutMethod()")
        public Object doAround(ProceedingJoinPoint pjp) throws Throwable { 
            long begin = System.nanoTime();
            Object obj = pjp.proceed();
            long end = System.nanoTime();
            
            boolean slowFlag = false;
            String searchDesc = "正常";
            
            if(((end - begin) / 1000000) > 100) { 
            	slowFlag = true;
            	searchDesc = "慢查询";
            }
            
            String logData = 
            		""
            		+ " \n ==> 调用Mapper方法：["+ pjp.getSignature().toString()+"]"
            		+ " \n ==> 参数：["+ JSON.toJSONString(Arrays.toString(pjp.getArgs()))+"]"
            		+ " \n ==> 结果：["+ JSON.toJSONString(obj)+"] "
            		+ " \n ==> 耗时：["+ ((end - begin) / 1000000)+"]毫秒"
            		+ " \n ==> 运行状态：["+searchDesc+"]"+
            		"";
            System.out.println(logData);
            
            // 插入到日志表中(分慢查询和快查询)
            
            
            return obj;
        }
    }

项目结构如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQxMzE2MTc_size_16_color_FFFFFF_t_70]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQxMzE2MTc_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/202001071259450.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQxMzE2MTc=,size_16,color_FFFFFF,t_70