https://github.com/zq2599/blog_demos
内容:所有原创文章分类汇总及配套源码,涉及Java、Docker、Kubernetes、DevOPS等;
本文是《MyBatis初级实战》系列的第三篇,我们将实战springboot、mybatis、druid的集成,并验证;
本文由以下内容组成:
名称 | 链接 | 备注 |
---|---|---|
项目主页 | https://github.com/zq2599/blog_demos | 该项目在GitHub上的主页 |
git仓库地址(https) | https://github.com/zq2599/blog_demos.git | 该项目源码的仓库地址,https协议 |
git仓库地址(ssh) | [email protected]:zq2599/blog_demos.git | 该项目源码的仓库地址,ssh协议 |
将整个集成所需步骤列举如下,避免遗漏:
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druid-spring-boot-starterartifactId>
<version>1.1.17version>
dependency>
<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>4.0.0modelVersion>
<parent>
<groupId>com.bolingcavalrygroupId>
<artifactId>mybatisartifactId>
<version>1.0-SNAPSHOTversion>
<relativePath>../pom.xmlrelativePath>
parent>
<groupId>com.bolingcavalrygroupId>
<artifactId>druidonesourceartifactId>
<version>0.0.1-SNAPSHOTversion>
<name>druidonesourcename>
<description>Demo project for Mybatis Druid (one datasource) in Spring Bootdescription>
<properties>
<java.version>1.8java.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<scope>runtimescope>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
<exclusions>
<exclusion>
<groupId>org.junit.vintagegroupId>
<artifactId>junit-vintage-engineartifactId>
exclusion>
exclusions>
dependency>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger2artifactId>
dependency>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger-uiartifactId>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druid-spring-boot-starterartifactId>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<scope>testscope>
dependency>
<dependency>
<groupId>com.google.code.gsongroupId>
<artifactId>gsonartifactId>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
plugin>
plugins>
build>
project>
<configuration>
<typeAliases>
<package name="com.bolingcavalry.druidonesource.entity"/>
typeAliases>
configuration>
server:
port: 8080
spring:
#1.JDBC数据源
datasource:
username: root
password: 123456
url: jdbc:mysql://192.168.50.43:3306/mybatis?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
driver-class-name: com.mysql.cj.jdbc.Driver
#2.连接池配置
druid:
#初始化连接池的连接数量 大小,最小,最大
initial-size: 5
min-idle: 5
max-active: 20
#配置获取连接等待超时的时间
max-wait: 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
time-between-eviction-runs-millis: 60000
# 配置一个连接在池中最小生存的时间,单位是毫秒
min-evictable-idle-time-millis: 30000
# 配置一个连接在池中最大生存的时间,单位是毫秒
max-evictable-idle-time-millis: 300000
validation-query: SELECT 1 FROM user
test-while-idle: true
test-on-borrow: true
test-on-return: false
# 是否缓存preparedStatement,也就是PSCache 官方建议MySQL下建议关闭 个人建议如果想用SQL防火墙 建议打开
pool-prepared-statements: true
max-pool-prepared-statement-per-connection-size: 20
# 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,slf4j
filter:
stat:
merge-sql: true
slow-sql-millis: 5000
#3.基础监控配置
web-stat-filter:
enabled: true
url-pattern: /*
#设置不统计哪些URL
exclusions: "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"
session-stat-enable: true
session-stat-max-count: 100
stat-view-servlet:
enabled: true
url-pattern: /druid/*
reset-enable: true
#设置监控页面的登录名和密码
login-username: admin
login-password: admin
allow: 127.0.0.1
#deny: 192.168.1.100
# mybatis配置
mybatis:
# 配置文件所在位置
config-location: classpath:mybatis-config.xml
# 映射文件所在位置
mapper-locations: classpath:mappers/*Mapper.xml
# 日志配置
logging:
level:
root: INFO
com:
bolingcavalry:
druidonesource:
mapper: debug
package com.bolingcavalry.druidonesource;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.bolingcavalry.druidonesource.mapper")
public class DuridOneSourceApplication {
public static void main(String[] args) {
SpringApplication.run(DuridOneSourceApplication.class, args);
}
}
package com.bolingcavalry.druidonesource;
import springfox.documentation.service.Contact;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Tag;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
/**
* @Description: swagger配置类
* @author: willzhao E-mail: [email protected]
* @date: 2020/8/11 7:54
*/
@Configuration
@EnableSwagger2
public class SwaggerConfig {
@Bean
public Docket createRestApi() {
return new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
.tags(new Tag("UserController", "用户服务"), new Tag("LogController", "日志服务"))
.select()
// 当前包路径
.apis(RequestHandlerSelectors.basePackage("com.bolingcavalry.druidonesource.controller"))
.paths(PathSelectors.any())
.build();
}
//构建 api文档的详细信息函数,注意这里的注解引用的是哪个
private ApiInfo apiInfo() {
return new ApiInfoBuilder()
//页面标题
.title("MyBatis CURD操作")
//创建人
.contact(new Contact("程序员欣宸", "https://github.com/zq2599/blog_demos", "[email protected]"))
//版本号
.version("1.0")
//描述
.description("API 描述")
.build();
}
}
package com.bolingcavalry.druidonesource;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* @Description: druid配置类
* @author: willzhao E-mail: [email protected]
* @date: 2020/8/18 08:12
*/
@Configuration
public class DruidConfig {
private static final Logger logger = LoggerFactory.getLogger(DruidConfig.class);
@Value("${spring.datasource.url}")
private String dbUrl;
@Value("${spring.datasource.username}")
private String username;
@Value("${spring.datasource.password}")
private String password;
@Value("${spring.datasource.driver-class-name}")
private String driverClassName;
@Value("${spring.datasource.druid.initial-size}")
private int initialSize;
@Value("${spring.datasource.druid.max-active}")
private int maxActive;
@Value("${spring.datasource.druid.min-idle}")
private int minIdle;
@Value("${spring.datasource.druid.max-wait}")
private int maxWait;
@Value("${spring.datasource.druid.pool-prepared-statements}")
private boolean poolPreparedStatements;
@Value("${spring.datasource.druid.max-pool-prepared-statement-per-connection-size}")
private int maxPoolPreparedStatementPerConnectionSize;
@Value("${spring.datasource.druid.time-between-eviction-runs-millis}")
private int timeBetweenEvictionRunsMillis;
@Value("${spring.datasource.druid.min-evictable-idle-time-millis}")
private int minEvictableIdleTimeMillis;
@Value("${spring.datasource.druid.max-evictable-idle-time-millis}")
private int maxEvictableIdleTimeMillis;
@Value("${spring.datasource.druid.validation-query}")
private String validationQuery;
@Value("${spring.datasource.druid.test-while-idle}")
private boolean testWhileIdle;
@Value("${spring.datasource.druid.test-on-borrow}")
private boolean testOnBorrow;
@Value("${spring.datasource.druid.test-on-return}")
private boolean testOnReturn;
@Value("${spring.datasource.druid.filters}")
private String filters;
@Value("{spring.datasource.druid.connection-properties}")
private String connectionProperties;
/**
* Druid 连接池配置
*/
@Bean
public DruidDataSource dataSource() {
DruidDataSource datasource = new DruidDataSource();
datasource.setUrl(dbUrl);
datasource.setUsername(username);
datasource.setPassword(password);
datasource.setDriverClassName(driverClassName);
datasource.setInitialSize(initialSize);
datasource.setMinIdle(minIdle);
datasource.setMaxActive(maxActive);
datasource.setMaxWait(maxWait);
datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
datasource.setMaxEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
datasource.setValidationQuery(validationQuery);
datasource.setTestWhileIdle(testWhileIdle);
datasource.setTestOnBorrow(testOnBorrow);
datasource.setTestOnReturn(testOnReturn);
datasource.setPoolPreparedStatements(poolPreparedStatements);
datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
try {
datasource.setFilters(filters);
} catch (Exception e) {
logger.error("druid configuration initialization filter", e);
}
datasource.setConnectionProperties(connectionProperties);
return datasource;
}
}
单元测试时有个问题要特别注意,就是关闭监控功能,否则会导致单元测试失败;
新建名为application-test.yml的文件,内容和application.yml一样,仅下图红框中的值不同:
单元测试类UserControllerTest的内容与上一章《MyBatis初级实战之二:增删改查》一样,仅下图红框位置是新增的,用于指定使用application-test.yml配置文件:
运行DuridOneSourceApplication类启动应用;
其他接口也可以通过类似操作在swagger页面上完成;
执行DuridOneSourceApplication类启动应用;
浏览器访问:http://localhost:8080/druid ,如下图,账号密码都是admin(在application.yml中配置的):