zoukankan      html  css  js  c++  java
  • SSM项目下Druid连接池的配置及数据源监控的使用

    一,连接池的配置

    在pom.xml中添加,druid的maven信息

    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>1.1.21</version>
    </dependency>

    数据源设置:

    要在init-method设置init方法,才能在监控页面中查看数据源等操作 
    <!--使用druid数据源-->
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init">
            <!--注入连接属性-->
            <property name="driverClassName" value="${jdbc.driverClass}"/>
            <property name="url" value="${jdbc.url}"/>
            <property name="username" value="${jdbc.user}"/>
            <property name="password" value="${jdbc.password}"/>
            <!--初始化连接池大小-->
            <property name="initialSize" value="5"></property>
            <!--设置最大连接数-->
            <property name="maxActive" value="10"></property>
            <!--设置等待时间-->
            <property name="maxWait" value="5000"/>
            <!--配置数据源监控的filter-->
            <property name="filters" value="stat"></property>
        </bean>

    二,数据源监控的配置:

    druid数据源监控是通过其support包下的StatViewServlet来提供的,所以要在web.xml进行servlet的配置

     StatViewServlet的部分代码如下:

    public class StatViewServlet extends ResourceServlet {
        private static final Log LOG = LogFactory.getLog(StatViewServlet.class);
        private static final long serialVersionUID = 1L;
        public static final String PARAM_NAME_RESET_ENABLE = "resetEnable";
        public static final String PARAM_NAME_JMX_URL = "jmxUrl";
        public static final String PARAM_NAME_JMX_USERNAME = "jmxUsername";
        public static final String PARAM_NAME_JMX_PASSWORD = "jmxPassword";
        private DruidStatService statService = DruidStatService.getInstance();
        private String jmxUrl = null;
        private String jmxUsername = null;
        private String jmxPassword = null;
        private MBeanServerConnection conn = null;
    
        public StatViewServlet() {
            super("support/http/resources");
        }
    StatViewServlet

    其资源路径在

    "support/http/resources" 主要是一些静态的前端资源文件,所以要在filter中过滤

    web.xml配置

    <!-- druid的监控配置 -->
      <servlet>
        <servlet-name>StatViewServlet</servlet-name>
        <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
        <!--登陆名-->
        <init-param>
          <param-name>loginUsername</param-name>
          <param-value>admin</param-value>
        </init-param>
        <!-- 登录密码-->
        <init-param>
          <param-name>loginPassword</param-name>
          <param-value>root</param-value>
        </init-param>
        <!--白名单-->
        <init-param>
          <param-name>allow</param-name>
          <param-value></param-value>
        </init-param>
        <!--黑名单-->
        <init-param>
          <param-name>deny</param-name>
          <param-value></param-value>
        </init-param>
      </servlet>
      <servlet-mapping>
        <servlet-name>StatViewServlet</servlet-name>
        <url-pattern>/druid/*</url-pattern>
      </servlet-mapping>
    
    
      <filter>
        <filter-name>WebStatFilter</filter-name>
        <filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class>
        <!--过滤的样式-->
        <init-param>
          <param-name>exclusions</param-name>
          <param-value>*.js,*.gif,*.css,*.ico,*.jpg,*.png,/druid/*</param-value>
        </init-param>
      </filter>
      <filter-mapping>
        <filter-name>WebStatFilter</filter-name>
        <servlet-name>StatViewServlet</servlet-name>
      </filter-mapping>
      <!--druid监控配置结束-->

    配置完成访问项目路径下的 “/druid/就能进入监控页面,登入用户名和密码就是在servlet中配置的

  • 相关阅读:
    记录此刻的感受(2018年8月26日19:44)
    提高工作效率
    VS C++项目报错warning C4199: ……use /Zc:twoPhase-
    dll加载遇到的问题
    记录xerces使用(VS2017 C++)
    vs编译应用程序不依赖运行vs环境
    [Locked] Binary Tree Vertical Order Traversal
    [Locked] Group Shifted Strings
    [Locked] Graph Valid Tree
    [Locked] Flatten 2D Vector
  • 原文地址:https://www.cnblogs.com/flytree/p/12325560.html
Copyright © 2011-2022 走看看