SpringBoot操作JDBC
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首先创建springBoot工程,选中web 和 mysql 以及jdbc
在配置文件中配置数据源:
spring:
datasource:
username: #{username}
password: #{password}
url: jdbc:mysql://#{ip}:#{port}/#{database_name} #指定地址
driver-class-name: com.mysql.jdbc.Driver #指定驱动
schema:
- classpath:department.sql #指定初始操作文件 ,可以用来初始化数据源
整合Druid数据源
从maven官网找到Druid的maven引入:
<!-- 引入druid数据源 https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.8</version>
</dependency>
在配置文件中修改默认数据源:
#基本配置
spring:
datasource:
username: #{username}
password: #{password}
url: jdbc:mysql://#{ip}:#{port}/#{database_name} #指定地址
driver-class-name: com.mysql.jdbc.Driver #指定
type: com.alibaba.druid.pool.DruidDataSource
其他高级配置如下:
# 数据源其他配置
initialSize: 5
minIdle: 5
maxActive: 20
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: SELECT 1 FROM DUAL
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
# 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
maxPoolPreparedStatementPerConnectionSize: 20
useGlobalDataSourceStat: true
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
然而发现,这些配置都是黄色的,因为springBoot默认的配置类中没有这些参数:
所以只有我们自己写一个配置类了
@Configuration
public class DruidConfig {
@ConfigurationProperties(prefix = "spring.datasource")
@Bean
public DataSource druid(){
return new DruidDataSource();
}
}
这样就可以成功配置Druid的高级功能了
接下来来配置Druid的监控
1、配置一个管理后台的servlet
//配置管理后台的servlet
@Bean
public ServletRegistrationBean statViewServlet(){
ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
Map<String,String > initParams = new HashMap<String,String>();
initParams.put("loginUsername","admin");
initParams.put("loginPassword","123456");
initParams.put("allow","localhost");//默认允许所有访问
initParams.put("deny","192.168.15.21");
bean.setInitParameters(initParams);
return bean;
}
2、配置一个监控的filter
//配置一个web监控的filter
@Bean
public FilterRegistrationBean webStatFilter(){
FilterRegistrationBean bean = new FilterRegistrationBean();
bean.setFilter(new WebStatFilter());
Map<String,String> initParams = new HashMap<>();
initParams.put("exclusions","*.js,*.css,/druid/*");
bean.setInitParameters(initParams);
bean.setUrlPatterns(Arrays.asList("/*"));
return bean;
}
通过localhost:8080/druid即可访问数据监控: