关于spring mvc3， mysql, setDataSource, AutoWired <2>

泪奔，两个小时，一个蛋疼的错误。。。
不说具体过程了，为了本地和sae测试，我配置了两个数据源
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://w.rdc.sae.sina.com.cn:3307/app_pianohero"></property>
        <property name="username" value="xxxx"></property>
        <property name="password" value="xxxx"></property>
        <property name="maxIdle" value="10"/> 
        <property name="timeBetweenEvictionRunsMillis" value="15000" />                
        <property name="minIdle" value="5"/>  
        <property name="maxActive" value="100"/>
        <property name="numTestsPerEvictionRun"  value="20" />        
        <property name="validationQuery"    value="SELECT 1 FROM DUAL" />  
        <property name="removeAbandoned" value="true"/>  
        <property name="maxWait" value="1000"></property>
        <property name="testWhileIdle" value="true" />
        <property name="removeAbandonedTimeout" value="180"/>
    </bean>
    
    <bean id="localDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/piano_db"></property>
        <property name="username" value="root"></property>
    </bean>

然后在java里我直接这么写的，

@Autowired
	public void setDataSource(DataSource dataSource)
	{
		
		JdbcTemplate template = new JdbcTemplate(dataSource);

@Autowired
	public void setLocalDataSource(DataSource dataSource)
	{
		
		JdbcTemplate template = new JdbcTemplate(dataSource);

　　以为他会根据名称自己来选那个，结果不是！！他数据类型对就OK了！！所以要这么写： 

@Autowired

@Qualifier("localDataSource")

public void setDataSource(DataSource dataSource)

引以为戒