IDEA搭建SpringBoot多模块聚合工程过程详解(多模块聚合工程)

  4.0.0app-spbootcom.gitee.appapp-spboot1.0.0 UTF-81.81.8 org.springframework.bootspring-boot-starter-parent2.6.5 

  4.0.0 com.gitee.appapp-spboot1.0.0app-commonapp-common1.0.0 

  4.0.0pomapp-spboot app-commonapp-pojoapp-mapperapp-serviceapp-webcom.gitee.appapp-spboot1.0.0 org.springframework.bootspring-boot-starter-parent2.6.5 UTF-81.81.81.0.0   com.gitee.appapp-common${app.spboot.version}app-pojoapp-mapperapp-serviceapp-web

  4.0.0 com.gitee.appapp-spboot1.0.0app-webapp-web1.0.0  org.springframework.bootspring-boot-starter-web

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

@RestController public class TestController { @GetMapping("/") public String demo() { return "
恭喜你，聚合工程创建成功（别高兴，还没完事呢）
"; } }

server: port: 6250 # 项目启动端口

  com.gitee.appapp-pojo

  com.gitee.appapp-mapper

  com.gitee.appapp-service

  org.springframework.bootspring-boot-starter-web com.gitee.appapp-mapper

public interface TestService { String findAll(); }

@Service public class TestServiceImpl implements TestService { @Override public String findAll() { return "调用app-service子工程中的findAll()方法"; } }

@RestController public class TestController { @Autowired private TestService testService; @GetMapping("/findAll") public String findAll() { return testService.findAll(); } }

     2.2.2   org.mybatis.spring.bootmybatis-spring-boot-starter${mybatis.version}

  org.mybatis.spring.bootmybatis-spring-boot-starter mysqlmysql-connector-java

public class TestUser implements Serializable { private Integer id; private String name; private Integer age; // setter and getter }

public interface TestUserMapper { List findAll(); }

   select * from mybatis_test 

server: port: 6250 # 项目启动端口 # 配置 mysql 数据源 spring: datasource: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/mybatis_test?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8 username: root password: root # mybatis 配置 mybatis: mapper-locations: classpath:mapper/**/*.xml # 指定mapper映射文件位置

@Service public class TestServiceImpl implements TestService { @Autowired private TestUserMapper testUserMapper; @Override public List getAll() { return testUserMapper.findAll(); } }

@MapperScan(value = "com.gitee.app.mapper.*") // 扫描mapper接口 @SpringBootApplication public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }

@RestController public class TestController { @Autowired private TestService testService; @GetMapping("/") public String demo() { return "
恭喜你，聚合工程创建成功（别高兴，还没完事呢）
"; } @GetMapping("/findAll") public String findAll() { return testService.findAll(); } @GetMapping("/query") public List query() { List list = testService.getAll(); // 访问不报错,映射文件存在方法 System.out.println(list); return list; } }

 1.2.6   com.alibabadruid-spring-boot-starter${druid.version}

  com.alibabadruid-spring-boot-starter

server: port: 6250 # 项目启动端口 # 配置 mysql 数据源 spring: datasource: # druid 相关配置 type: com.alibaba.druid.pool.DruidDataSource druid: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/zblog_test?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&useSSL=false username: root password: root initial-size: 5 # 初始化连接数量 min-idle: 5 # 最小数量 max-active: 20 # 最多数量 max-wait: 60000 # 获取连接最大超时等待时间，单位毫秒ms time-between-eviction-runs-millis: 60000 # 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒ms min-evictable-idle-time-millis: 300000 # 配置一个连接在池中最小生存的时间，单位是毫秒ms # 如果validationQuery为null，testOnBorrow、testOnReturn、testWhileIdle都不会起作用 validation-query: SELECT 1 FROM DUAL # 用来检测连接是否有效的sql，要求是一个查询语句 # 建议配置为true，不影响性能，并且保证安全性。 # 获取连接的时候检测，若空闲时间大于timeBetweenEvictionRunsMillis，执行validationQuery检测连接是否有效。 test-while-idle: true # 申请连接时执行validationQuery检测连接是否有效，做了这个配置会降低性能 test-on-borrow: true # 归还连接时执行validationQuery检测连接是否有效，做了这个配置会降低性能 test-on-return: true # 打开PSCache，并且指定每个连接上PSCache的大小 pool-prepared-statements: true max-pool-prepared-statement-per-connection-size: 20 # configuration of druid plugin # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙 filters: stat,wall use-global-data-source-stat: true # 通过connectProperties属性来打开mergeSql功能；慢SQL记录 connection-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 # configuration of druid control server stat-view-servlet: enabled: true # 开启druid监控页面,false则访问出现404 login-username: root # druid监控登录用户 login-password: root # druid监控登录密码 reset-enable: false url-pattern: /druid/* # druid监控界面访问路径 web-stat-filter: url-pattern: /* # 添加过滤规则 # 对以下类型，忽略过滤格式 exclusions: '*.js,*.gif,*.jpg-600,*.png-600,*.css,*.ico,/druid/*' # mybatis 配置 mybatis: mapper-locations: classpath:mapper/**/*.xml # 指定mapper映射文件位置

 org.springframework.bootspring-boot-starter-web  org.springframework.bootspring-boot-starter-logging org.springframework.bootspring-boot-starter-log4j2

# 日志配置 logging: config: classpath:log4j2.xml # 指定log4j2配置文件

@RestController public class TestController { // 日志输出对象 private static final Logger LOG = LoggerFactory.getLogger(TestController.class); @Autowired private TestService testService; @GetMapping("/query") public List query() { LOG.info("======>>>: 开始查询数据库"); List list = testService.getAll(); LOG.info("======>>>: 数据库查询完成"); System.out.println(list); return list; } }

import org.slf4j.Logger; import org.slf4j.LoggerFactory;