连接池报错 Proxool Provider unable to load JAXP configurator file: proxool.xml

上篇博文讲到简易配置 proxool 连接池:http://www.cnblogs.com/linnuo/p/7232380.html

由于把说明注释留在了 proxool.xml 配置文件里导致配置后报错,原因如下:

hibernate.cfg.xml 代码片段:

<session-factory>
<property name="show_sql">true</property>
<property name="generate_statistics">false</property>
<property name="connection.useUnicode">true</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property> <property name="hibernate.connection.provider_class">org.hibernate.connection.ProxoolConnectionProvider</property>
<property name="hibernate.proxool.xml">proxool.xml</property>
<property name="hibernate.proxool.pool_alias">mysqldb</property>
</session-factory>

proxool.xml 完整代码:

<?xml version="1.0" encoding="UTF-8"?>
<!-- the proxool configuration can be embedded within your own application's.
Anything outside the "proxool" tag is ignored. -->
<something-else-entirely>
<proxool>
<!--连接池的别名-->
<alias>mysqldb</alias>
<!--proxool只能管理由自己产生的连接-->
<driver-url>jdbc:mysql://127.0.0.1:3306/ucom?useUnicode=true&amp;characterEncoding=UTF8</driver-url>
<!-- JDBC驱动程序 -->
<driver-class>com.mysql.jdbc.Driver</driver-class>
<driver-properties>
<property name="user" value="root"/>
<property name="password" value="gdyl2017"/>
</driver-properties>
<!-- proxool自动侦察各个连接状态的时间间隔(毫秒),侦察到空闲的连接就马上回收,超时的销毁-->
<house-keeping-sleep-time>90000</house-keeping-sleep-time>
<!-- 指因未有空闲连接可以分配而在队列中等候的最大请求数,超过这个请求数的用户连接就不会被接受-->
<maximum-new-connections>20</maximum-new-connections>
<!-- 最少保持的空闲连接数-->
<prototype-count>5</prototype-count>
<!-- 允许最大连接数,超过了这个连接,再有请求时,就排在队列中等候,最大的等待请求数由maximum-new-connections决定-->
<maximum-connection-count>100</maximum-connection-count>
<!-- 最小连接数-->
<minimum-connection-count>10</minimum-connection-count>
<!-- 在分配连接前后是否进行有效性测试,这个是解决本问题的关键 -->
<test-before-use>true</test-before-use>
<test-after-use>true</test-after-use>
<!-- 用于测试的SQL语句 一定要写(不知道问什么) -->
<house-keeping-test-sql>SELECT CURRENT_USER</house-keeping-test-sql>
</proxool>
</something-else-entirely>

    以上代码放在本地运行没问题,但是放到服务器报错

连接池报错 Proxool Provider unable to load JAXP configurator file: proxool.xml

  找了许久终于发现了问题:proxool.xml 文件里不能存在中文,包括注释

  

  解决方案:

    将 proxool.xml 的中文去掉即可,如下:

    

<?xml version="1.0" encoding="UTF-8"?>
<!-- the proxool configuration can be embedded within your own application's.
Anything outside the "proxool" tag is ignored. -->
<something-else-entirely>
  <proxool>
    <alias>mysqldb</alias>
    <driver-url>jdbc:mysql://127.0.0.1:3306/ucom?useUnicode=true&amp;characterEncoding=UTF8</driver-url>
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <driver-properties>
      <property name="user" value="root"/>
      <property name="password" value="gdyl2017"/>
    </driver-properties>
    <house-keeping-sleep-time>90000</house-keeping-sleep-time>
    <maximum-new-connections>20</maximum-new-connections>
    <prototype-count>5</prototype-count>
    <maximum-connection-count>100</maximum-connection-count>
    <minimum-connection-count>10</minimum-connection-count>
    <test-before-use>true</test-before-use>
    <test-after-use>true</test-after-use>
    <house-keeping-test-sql>SELECT CURRENT_USER</house-keeping-test-sql>
  </proxool>
</something-else-entirely>

  

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