【Druid】access denied for user ''@'ip'

今天在寫單元測試時，遇到一個很奇葩的問題，一直在報這樣的錯誤：

Caused by: java.sql.SQLException: Access denied for user ''@'183.134.103.169' (using password: YES)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3847)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3783)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:871)
	at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1665)
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1207)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2249)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2280)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2079)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:44)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:400)
	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:399)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:325)
	at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:148)
	at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:785)
	at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:142)
	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1423)
	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1477)
	at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:677)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1640)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1581)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1511)
	... 62 more

分析來分析去，總是找不到錯誤的原因。於是想到，難道是Druid的配置問題？

於是重新看了下spring的數據庫配置，

<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="url" value="${db.url}"/>
        <property name="name" value="${db.user}"/>
        <property name="password" value="${db.password}"/>
        <property name="initialSize" value="${db.initialSize}"/>
        <property name="minIdle" value="${db.maxIdle}"/>
        <property name="maxActive" value="${db.maxActive}"/>
        <property name="maxWait" value="${db.maxWait}"/>
        <!-- 配置間隔多久才進行一次檢測，檢測需要關閉的空閑連接，單位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000"/>
        <!-- 配置一個連接在池中最小生存的時間，單位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="60000"/>
        <property name="validationQuery" value="SELECT 'x'"/>
        <property name="testWhileIdle" value="true"/>
        <property name="testOnBorrow" value="false"/>
        <property name="testOnReturn" value="false"/>
        <property name="filters" value="config"/>
        <property name="connectionProperties" value="config.decrypt=true"/>
        <!-- 每隔5分鍾將監控日志輸出到日志文件中，單位是毫秒。 -->
        <property name="timeBetweenLogStatsMillis" value="300000"/>
    </bean>

發現name這個屬性感覺不太對勁，於是查閱文檔。

原來這邊配置的鏈接用戶名應該是userName，而不是name。改為userName立刻解決問題，於是mark一下。