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