SpringBoot的配置文件和注解

SpringBoot

创建maven工程

在pom.xml中导入相应的依赖

4.0.0 com.shan ShanOneZzzfSSHBoot 1.0-SNAPSHOT jar org.springframework.boot spring-boot-starter-parent 2.1.0.RELEASE   org.springframework.boot spring-boot-starter-web   org.springframework.boot spring-boot-starter-logging org.springframework.boot spring-boot-starter-data-redis org.springframework.boot spring-boot-starter-log4j2   org.mybatis.spring.boot mybatis-spring-boot-starter 2.0.1 mysql mysql-connector-java 8.0.15   com.github.pagehelper pagehelper-spring-boot-starter 1.2.12 com.alibaba druid 1.1.17 org.springframework.boot spring-boot-starter-data-redis org.springframework.session spring-session-data-redis org.projectlombok lombok 1.18.2   com.alibaba fastjson 1.2.60 org.mybatis.generator mybatis-generator-core 1.3.5 io.springfox springfox-swagger2 2.9.1 io.springfox springfox-swagger-ui 2.9.1 org.mybatis.generator mybatis-generator-maven-plugin 1.3.5 true true

添加application.yml或者application.properties全局配置文件

              application.yml的简单配置

#格式要正确，不能有多余的空格或缩进 #配置tomcat端口号、和虚拟路径 server: port: 8080 servlet: context-path: /boot #配置SpringMVC，下面配置多个数据库需要添加 --- 用于标识不同的配置 spring: mvc: servlet: load-on-startup: 1 application: name: springbootdemo profiles: active: local aop: auto: true proxy-target-class: false #配置数据源 datasource: driverClassName: com.mysql.cj.jdbc.Driver type: com.alibaba.druid.pool.DruidDataSource initialSize: 5 minIdle: 5 maxActive: 20 maxWait: 60000 timeBetweenEvictionRunsMillis: 60000 minEvictableIdleTimeMillis: 300000 validationQuery: SELECT 1 FROM DUAL testWhileIdle: true testOnBorrow: true testOnReturn: false poolPreparedStatements: true maxPoolPreparedStatementPerConnectionSize: 20 filters: stat,wall,log4j2 connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 useGlobalDataSourceStat: true #配置mybatis mybatis: type-aliases-package: com.pro.conf.domain.* mapper-locations: classpath:/mapper/**/*.xml configuration: map-underscore-to-camel-case: true use-generated-keys: true default-fetch-size: 100 default-statement-timeout: 60 --- spring: profiles: local datasource: ddyj: username: root password: 123456 url: jdbc:mysql://localhost:3306/ddyj?serverTimezone=Asia/Shanghai&useSSL=false test: username: root password: 123456 url: jdbc:mysql://localhost:3306/test?serverTimezone=Asia/Shanghai&useSSL=false redis: database: 0 host: 127.0.0.1 port: 6379 pass: --- spring: profiles: staging datasource: ddyj: username: root password: 123456 url: jdbc:mysql://localhost:3306/ddyj?serverTimezone=Asia/Shanghai&useSSL=false test: username: root password: 123456 url: jdbc:mysql://localhost:3306/test?serverTimezone=Asia/Shanghai&useSSL=false redis: database: 3 host: 127.0.0.1 port: 6379 pass: --- spring: profiles: prod datasource: ddyj: username: root password: 123456 url: jdbc:mysql://localhost:3306/ddyj?serverTimezone=Asia/Shanghai&useSSL=false test: username: root password: 123456 url: jdbc:mysql://localhost:3306/test?serverTimezone=Asia/Shanghai&useSSL=false redis: database: 3 host: 127.0.0.1 port: 6379 pass:

log4j2和逆向工程的配置文件

log4j2.xml配置

/data/serviceLogs/boot-service info error debug

逆向工程配置文件 generatorConfig.xml

配置文件的位置

1、启动器代码

package com.pro;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

@SpringBootApplication  //开启SpringBootApplication
@EnableRedisHttpSession  //开启Redis共享
@MapperScan("com.pro.mapper")  //扫描mapper包
public class StartPro {
    public static void main(String[] args) {
        SpringApplication.run(StartPro.class,args);  //启动
    }
}

2、控制层Controller层的一般配置

import com.pro.request.LoginParams;
import com.pro.result.ResponseData;
import com.pro.result.ResponseResult;
import com.pro.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpSession;

@Controller
@RequestMapping("/loginController")
public class LoginController {
    @Autowired
    private IUserService userService;

    @RequestMapping("/userLogin")
    @ResponseBody
    public ResponseResult userLogin(LoginParams params, HttpSession session){
        ResponseResult responseResult = userService.userLogin(params);
        Integer code = responseResult.getCode();
        if (code == 200){
            session.setAttribute("userInfo", responseResult.getData());
            return ResponseResult.success("登陆成功");
        }
        return ResponseResult.fail(1001,"登陆失败");
    }
}

3、服务层service.impl层的配置

import com.alibaba.fastjson.JSONObject;
import com.pro.conf.database.DatabaseType;
import com.pro.conf.database.DynamicDataSource;
import com.pro.domain.Student;
import com.pro.domain.User;
import com.pro.mapper.StudentMapper;
import com.pro.mapper.UserMapper;
import com.pro.result.ResponseResult;
import com.pro.service.IDataSourceService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
@Component
public class DataSourceServiceImpl implements IDataSourceService {
    private Logger log = LoggerFactory.getLogger(this.getClass());
    @Resource
    private UserMapper userMapper;
    @Resource
    private StudentMapper studentMapper;

    @Override
    public ResponseResult dataSourceSwitch() {
        //在默认数据源下，查询当前数据
        User user = userMapper.selectByPrimaryKey(5);
        log.info("dataSourceSwitch::::{}", JSONObject.toJSONString(user));
        //查询test下的student信息
        DynamicDataSource.setDataSourceType(DatabaseType.test);
        Student student = studentMapper.selectByPrimaryKey(4);
        log.info("dataSource(Student):{}",JSONObject.toJSONString(student));
        DynamicDataSource.setDataSourceType(DatabaseType.ddyj);
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("user",user);
        jsonObject.put("student",student);
        return ResponseResult.success(jsonObject);
    }
}

4、domain层和mapper层不用添加注解