这个springboot集成druid和tk.mybatis是在之前Idea搭建多模块聚合maven项目的基础上完成的
https://segmentfault.com/a/1190000021385783
1.druid是什么?
Druid首先是一个数据库连接池。Druid是目前最好的数据库连接池，在功能、性能、扩展性方面，都超过其他数据库连接池。
2.tk.mybatis是什么?
通用Mapper，优点是可以缓存，全部针对单表操作，每个实体类都需要继承通用Mapper接口来获得通用方法,目前新版也可以针对多表进行操作,但是就不能使用二级缓存。
3.mybatis-genertor是什么?
是一款mybatis自动代码生成工具，可以通过配置，快速生成mapper和xml文件。
4.springboot集成mybatis-genertor生成dao层的实体和mapper,我把这个集成放到fire-common层
pom.xml
org.mybatis.generator
mybatis-generator-core
${mybatis-generator.version}
tk.mybatis
mapper
${tk-mybatis.version}
org.mybatis
mybatis
${mybatis.version}
org.freemarker
freemarker
${freemarker.version}
mysql
mysql-connector-java
${mysql-connector-java.version}
genertor.xml
Genertor.java
package cn.yskcoder.fire.generator;
import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
/**
* 自动生成Mybatis相关的代码和配置文件
*
* @author: yskcoder
* @createDate: 2019/12/25 18:59
* @version: 1.0
*/
public class Generator {
public static void main(String[] args) throws Exception {
List warnings = new ArrayList();
boolean overwrite = true;
ConfigurationParser cp = new ConfigurationParser(warnings);
InputStream stream = Class.class.getResourceAsStream("/mybatis-generator.xml");
Configuration config =
cp.parseConfiguration(stream);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
myBatisGenerator.generate(null);
for (String warning : warnings) {
System.out.println(warning);
}
System.out.println("恭喜你，生成Mybatis相关的代码完成！");
}
} 5.springboot集成druid和tk.mybatis
pom.xml,这里将spring-boot-starter-web放到了fire-service里面因为要用注解的原因
cn.yskcoder.fire
fire-service
v1.0
org.springframework.boot
spring-boot-starter-aop
org.springframework.boot
spring-boot-starter-test
test
com.alibaba
druid
${druid.version}
org.mybatis.spring.boot
mybatis-spring-boot-starter
${mybatis-spring-boot-starter.version}
tk.mybatis
mapper-spring-boot-starter
${mapper-spring-boot-tarter.version}
application.yml
##########################################################
################## Fire项目的配置 #######################
##########################################################
################### 项目启动端口 ########################
server:
port: 80
################### spring配置 #########################
spring:
profiles:
datasource:
url: jdbc:mysql://localhost:3306/fire?autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowMultiQueries=true&jdbcCompliantTruncation=false&serverTimezone=GMT%2B8
username: root
password: 123456
resources:
static-locations: classpath:/webapp/
mvc:
static-path-pattern: /static/**
view:
prefix: /WEB-INF/view/
################### tk.mybaties配置 #########################
mybatis:
type-aliases-package: cn.yskcoder.fire.model
mapper-locations: classpath*:mapper/*.xml
通过注解的方式配置数据库数据源DruidProperties
Component
@ConfigurationProperties(prefix = "spring.datasource")
public class DruidProperties {
private String url = "jdbc:mysql://127.0.0.1:3306/fire?autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull";
private String username = "root";
private String password = "123456";
private String driverClassName = "com.mysql.cj.jdbc.Driver";
private Integer initialSize = 4;
private Integer minIdle = 2;
private Integer maxActive = 30;
private Integer maxWait = 60000;
private Integer timeBetweenEvictionRunsMillis = 60000;
private Integer minEvictableIdleTimeMillis = 300000;
private String validationQuery = "SELECT 'x'";
private Boolean testWhileIdle = true;
private Boolean testOnBorrow = false;
private Boolean testOnReturn = false;
private Boolean poolPreparedStatements = true;
private Integer maxPoolPreparedStatementPerConnectionSize = 30;
private String filters = "stat";
public DataSource config(DruidDataSource dataSource){
dataSource.setUrl(url);
dataSource.setUsername(username);
dataSource.setPassword(password);
dataSource.setDriverClassName(driverClassName);
dataSource.setInitialSize(initialSize); //定义初始连接数
dataSource.setMinIdle(minIdle); //最小空闲
dataSource.setMaxActive(maxActive); //定义最大连接数
dataSource.setMaxWait(maxWait); //最长等待时间
// 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
dataSource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
// 配置一个连接在池中最小生存的时间，单位是毫秒
dataSource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
dataSource.setValidationQuery(validationQuery);
dataSource.setTestWhileIdle(testWhileIdle);
dataSource.setTestOnBorrow(testOnBorrow);
dataSource.setTestOnReturn(testOnReturn);
// 打开PSCache，并且指定每个连接上PSCache的大小
dataSource.setPoolPreparedStatements(poolPreparedStatements);
dataSource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
try {
dataSource.setFilters(filters);
} catch (SQLException e) {
e.printStackTrace();
}
return dataSource;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getDriverClassName() {
return driverClassName;
}
public void setDriverClassName(String driverClassName) {
this.driverClassName = driverClassName;
}
public Integer getInitialSize() {
return initialSize;
}
public void setInitialSize(Integer initialSize) {
this.initialSize = initialSize;
}
public Integer getMinIdle() {
return minIdle;
}
public void setMinIdle(Integer minIdle) {
this.minIdle = minIdle;
}
public Integer getMaxActive() {
return maxActive;
}
public void setMaxActive(Integer maxActive) {
this.maxActive = maxActive;
}
public Integer getMaxWait() {
return maxWait;
}
public void setMaxWait(Integer maxWait) {
this.maxWait = maxWait;
}
public Integer getTimeBetweenEvictionRunsMillis() {
return timeBetweenEvictionRunsMillis;
}
public void setTimeBetweenEvictionRunsMillis(Integer timeBetweenEvictionRunsMillis) {
this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
}
public Integer getMinEvictableIdleTimeMillis() {
return minEvictableIdleTimeMillis;
}
public void setMinEvictableIdleTimeMillis(Integer minEvictableIdleTimeMillis) {
this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
}
public String getValidationQuery() {
return validationQuery;
}
public void setValidationQuery(String validationQuery) {
this.validationQuery = validationQuery;
}
public Boolean getTestWhileIdle() {
return testWhileIdle;
}
public void setTestWhileIdle(Boolean testWhileIdle) {
this.testWhileIdle = testWhileIdle;
}
public Boolean getTestOnBorrow() {
return testOnBorrow;
}
public void setTestOnBorrow(Boolean testOnBorrow) {
this.testOnBorrow = testOnBorrow;
}
public Boolean getTestOnReturn() {
return testOnReturn;
}
public void setTestOnReturn(Boolean testOnReturn) {
this.testOnReturn = testOnReturn;
}
public Boolean getPoolPreparedStatements() {
return poolPreparedStatements;
}
public void setPoolPreparedStatements(Boolean poolPreparedStatements) {
this.poolPreparedStatements = poolPreparedStatements;
}
public Integer getMaxPoolPreparedStatementPerConnectionSize() {
return maxPoolPreparedStatementPerConnectionSize;
}
public void setMaxPoolPreparedStatementPerConnectionSize(Integer maxPoolPreparedStatementPerConnectionSize) {
this.maxPoolPreparedStatementPerConnectionSize = maxPoolPreparedStatementPerConnectionSize;
}
public String getFilters() {
return filters;
}
public void setFilters(String filters) {
this.filters = filters;
}
}配置mybatis通过注解类的方式MyBatisConfig
/**
* mybatisConfig配置类
*
* @author: yskcoder
* @createDate: 2019/12/25 16:20
* @version: 1.0
*/
@Configuration
public class MyBatisConfig {
@Autowired
DruidProperties druidProperties;
/**
* Fire数据源
*/
private DruidDataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
druidProperties.config(dataSource);
return dataSource;
}
@Bean
public DruidDataSource datasource() {
return dataSource();
}
}
6.具体的代码可以参考Fire
https://github.com/yskcoder/Fire