Druid来自于阿里的一个开源连接池能够提供强大的监控和扩展功能，Spring Boot默认不支持Druid和jpa，需要引入依赖。
1、引入依赖包
<!--druid-->
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.22</version>
</dependency>
<!--jpa-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>2、配置application.properties
#druid配置-MYSQL
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test1?characterEncoding=utf8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true
spring.datasource.username=root
spring.datasource.password=123456
# 初始化大小，最小，最大
spring.datasource.initialSize=5
spring.datasource.maxActive=20
spring.datasource.minIdle=5
# 配置获取连接等待超时的时间
spring.datasource.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
spring.datasource.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
spring.datasource.min-evictable-idle-time-millis=300000
#检测连接是否有效的sql,要求是一个查询语句，常用select 'x'.如果validationQuery为null,testOnBorrow,testOnBorrow,testOnReturn,testWhileIdle都不会起作用。这个可以不配置
spring.datasource.validation-query=SELECT 'x'
#检测连接是否有效的超时时间。
spring.datasource.validation-query-timeout=60000
spring.datasource.test-while-idle=true
spring.datasource.test-on-borrow=false
spring.datasource.test-on-return=false
# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.pool-prepared-statements=true
spring.datasource.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，#别名方式，扩展插件，监控统计用的filter:stat，日志用的filter:log4j，防御sql注入的filter:wall
spring.datasource.filters=stat,wall,slf4j3、Druid配置信息定制
@Configuration
public class DruidConfig {
@Autowired
private DruidDataSourceProperties properties;
@Bean(name = "druidDataSource", initMethod = "init", destroyMethod = "close")
@Qualifier("druidDataSource")
public DataSource dataSource() throws Exception {
DruidDataSource druidDataSource = new DruidDataSource();
druidDataSource.setUrl(properties.getUrl());
druidDataSource.setUsername(properties.getUsername());
druidDataSource.setPassword(properties.getPassword());
druidDataSource.setDriverClassName(properties.getDriverClassName());
druidDataSource.setInitialSize(properties.getInitialSize());
druidDataSource.setMaxActive(properties.getMaxActive());
druidDataSource.setMinIdle(properties.getMinIdle());
druidDataSource.setMaxWait(properties.getMaxWait());
druidDataSource.setTimeBetweenEvictionRunsMillis(properties
.getTimeBetweenEvictionRunsMillis());
druidDataSource.setMinEvictableIdleTimeMillis(properties
.getMinEvictableIdleTimeMillis());
druidDataSource.setValidationQuery(properties.getValidationQuery());
druidDataSource.setTestWhileIdle(properties.isTestWhileIdle());
druidDataSource.setTestOnBorrow(properties.isTestOnBorrow());
druidDataSource.setTestOnReturn(properties.isTestOnReturn());
druidDataSource.setPoolPreparedStatements(properties
.isPoolPreparedStatements());
druidDataSource.setMaxPoolPreparedStatementPerConnectionSize(properties
.getMaxPoolPreparedStatementPerConnectionSize());
druidDataSource.setFilters(properties.getFilters());
try {
if (null != druidDataSource) {
druidDataSource.setFilters("wall,stat");
druidDataSource.setUseGlobalDataSourceStat(true);
// Properties properties = new Properties();
// properties.setProperty("decrypt", "true");
// druidDataSource.setConnectProperties(properties);
druidDataSource.init();
}
} catch (Exception e) {
throw new RuntimeException(
"load datasource error, dbProperties is :", e);
}
return druidDataSource;
}
}3、获取Properties中配置信息
@Configuration
@ConfigurationProperties(prefix = "spring.datasource")
public class DruidDataSourceProperties {
private String url;
private String username;
private String password;
private String driverClassName;
private int initialSize;
private int maxActive;
private int minIdle;
private int maxWait;
private long timeBetweenEvictionRunsMillis;
private long minEvictableIdleTimeMillis;
private String validationQuery;
private boolean testWhileIdle;
private boolean testOnBorrow;
private boolean testOnReturn;
private boolean poolPreparedStatements;
private int maxPoolPreparedStatementPerConnectionSize;
private String filters;
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 int getInitialSize() {
return initialSize;
}
public void setInitialSize(int initialSize) {
this.initialSize = initialSize;
}
public int getMaxActive() {
return maxActive;
}
public void setMaxActive(int maxActive) {
this.maxActive = maxActive;
}
public int getMinIdle() {
return minIdle;
}
public void setMinIdle(int minIdle) {
this.minIdle = minIdle;
}
public int getMaxWait() {
return maxWait;
}
public void setMaxWait(int maxWait) {
this.maxWait = maxWait;
}
public long getTimeBetweenEvictionRunsMillis() {
return timeBetweenEvictionRunsMillis;
}
public void setTimeBetweenEvictionRunsMillis(long timeBetweenEvictionRunsMillis) {
this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
}
public long getMinEvictableIdleTimeMillis() {
return minEvictableIdleTimeMillis;
}
public void setMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis) {
this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
}
public String getValidationQuery() {
return validationQuery;
}
public void setValidationQuery(String validationQuery) {
this.validationQuery = validationQuery;
}
public boolean isTestWhileIdle() {
return testWhileIdle;
}
public void setTestWhileIdle(boolean testWhileIdle) {
this.testWhileIdle = testWhileIdle;
}
public boolean isTestOnBorrow() {
return testOnBorrow;
}
public void setTestOnBorrow(boolean testOnBorrow) {
this.testOnBorrow = testOnBorrow;
}
public boolean isTestOnReturn() {
return testOnReturn;
}
public void setTestOnReturn(boolean testOnReturn) {
this.testOnReturn = testOnReturn;
}
public boolean isPoolPreparedStatements() {
return poolPreparedStatements;
}
public void setPoolPreparedStatements(boolean poolPreparedStatements) {
this.poolPreparedStatements = poolPreparedStatements;
}
public int getMaxPoolPreparedStatementPerConnectionSize() {
return maxPoolPreparedStatementPerConnectionSize;
}
public void setMaxPoolPreparedStatementPerConnectionSize(
int maxPoolPreparedStatementPerConnectionSize) {
this.maxPoolPreparedStatementPerConnectionSize = maxPoolPreparedStatementPerConnectionSize;
}
public String getFilters() {
return filters;
}
public void setFilters(String filters) {
this.filters = filters;
}
public DruidDataSourceProperties() {
// TODO Auto-generated constructor stub
}
public DruidDataSourceProperties(String url, String username,
String password, String driverClassName, int initialSize,
int maxActive, int minIdle, int maxWait,
long timeBetweenEvictionRunsMillis,
long minEvictableIdleTimeMillis, String validationQuery,
boolean testWhileIdle, boolean testOnBorrow, boolean testOnReturn,
boolean poolPreparedStatements,
int maxPoolPreparedStatementPerConnectionSize, String filters) {
this.url = url;
this.username = username;
this.password = password;
this.driverClassName = driverClassName;
this.initialSize = initialSize;
this.maxActive = maxActive;
this.minIdle = minIdle;
this.maxWait = maxWait;
this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
this.validationQuery = validationQuery;
this.testWhileIdle = testWhileIdle;
this.testOnBorrow = testOnBorrow;
this.testOnReturn = testOnReturn;
this.poolPreparedStatements = poolPreparedStatements;
this.maxPoolPreparedStatementPerConnectionSize = maxPoolPreparedStatementPerConnectionSize;
this.filters = filters;
}
}如果需要Druid的监控统计功能在配置代码中加入以下代码：
@Bean
public ServletRegistrationBean druidServlet() {
ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid
@Bean(name = "entityManagerFactory")
@Primary
public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder) {
return builder
.dataSource(druidDataSource)
.properties(getVendorProperties(druidDataSource))
.packages("*.entity")//指定需要扫描的entity所在包
.build();
}
private Map<String, String> getVendorProperties(DataSource dataSource) {
Map<String, String> map = jpaProperties.getProperties();
map.put("hibernate.dialect", "org.hibernate.dialect.MySQL8Dialect");
map.put("hibernate.show_sql", "true");
return map;
}
@Bean(name = "transactionManager")
@Primary
PlatformTransactionManager transactionManager(EntityManagerFactoryBuilder builder) {
return new JpaTransactionManager(entityManagerFactory(builder).getObject());
}
}到此这篇关于springboot 中 druid+jpa+MYSQL数据库配置的文章就介绍到这了,更多相关springboot druid+jpa+MYSQL配置内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！
