[Java] springboot配置druid连接池的方法示例

<dependency>
  <groupid>com.alibaba</groupid>
  <artifactid>druid</artifactid>
  <version>1.1.12</version>
</dependency>

@configuration//在项目启动时可以初始化配置
public class druidconfiguration {
  @bean
  public servletregistrationbean staviewservlet(){
  servletregistrationbean servletregistrationbean = new servletregistrationbean(new statviewservlet(),
    "/druid/*");
  //白名单为空允许任何ip访问
  servletregistrationbean.addinitparameter("allow","127.0.0.1");
  //ip黑名单(存在共同时，deny优先于allow)：如果满足deny的即提示：sorry you are not permitted...
  servletregistrationbean.addinitparameter("deny","127.0.0.2");
  //登录查看信息的账号密码
  servletregistrationbean.addinitparameter("loginusername","druid");
  servletregistrationbean.addinitparameter("loginpassword","druid");
  //是否能够重置数据
  servletregistrationbean.addinitparameter("resetenable","true");
  return servletregistrationbean;
  }
 
  @bean
  public filterregistrationbean statfilter(){
  filterregistrationbean filterregistrationbean = new filterregistrationbean(new webstatfilter());
  //添加过滤规则
  filterregistrationbean.addurlpatterns("/*");
  //添加不需要忽略的格式信息
  filterregistrationbean.addinitparameter("exclusions","*.js,*.gif,*.jpn,*.png,*.css,*.ico,/druid/*");
  return filterregistrationbean;
  }
 
  //配置数据库的基本连接信息
  @bean
  @primary
  @configurationproperties(prefix = "spring.datasource")//在application.properties中读取配置信息注入到druiddatasource里
  public datasource datasource(){
  druiddatasource druiddatasource = datasourcebuilder.create().type(druiddatasource.class).build();
  druiddatasource.setinitialsize(3);//初始化物理连接的数量
  try {
    druiddatasource.addfilters("stat,wall");//stat是sql监控，wall是防火墙(如果不添加则监控无效)，不能添加log4j不然会出错
  } catch (sqlexception e) {
    e.printstacktrace();
  }
  return druiddatasource;
  }
 
}

spring.datasource.type=com.alibaba.druid.pool.druiddatasource
 
spring.datasource.driver-class-name=com.mysql.jdbc.driver
spring.datasource.url=jdbc:mysql://localhost:3306/mrbshiro?characterencoding=utf-8
spring.datasource.username=root
spring.datasource.password=123456