There is no statement named user.getUser in this SqlMap.

各位大侠，我快抓狂了。。　帮一下哈。谢谢了！！！！
sqlMapConfig.xml如下：<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE sqlMapConfig      
    PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"      
    "http://ibatis.apache.org/dtd/sql-map-config-2.dtd"><sqlMapConfig>  <!-- Configure a built-in transaction manager.  If you're using an 
       app server, you probably want to use its transaction manager 
       and a managed datasource -->
  <transactionManager type="JDBC" commitRequired="false">
    <dataSource type="SIMPLE">
      <property name="JDBC.Driver" value="oracle.jdbc.driver.OracleDriver"/>
      <property name="JDBC.ConnectionURL" value="jdbc:oracle:thin:@localhost:1521:orcl"/>
      <property name="JDBC.Username" value="cjq"/>
      <property name="JDBC.Password" value="cjq"/>
    </dataSource>
  </transactionManager>  <sqlMap resource="com/demo/hibernate/beans/user_SqlMap.xml"/>
  
</sqlMapConfig>
user_SqlMap.xml　如下　：<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE sqlMap      
    PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"      
    "http://ibatis.apache.org/dtd/sql-map-2.dtd"><sqlMap namespace="user">
<select id="getUser" resultClass="com.demo.hibernate.beans.User">
select * from t_user where username=#username#
</select>
</sqlMap>UserDAOImpl 类如下：public class UserDAOImpl implements UserDAO{

private SqlMapClient sqlMapClient; public User getUser(String username) throws SQLException {
User record=(User)sqlMapClient.queryForObject("user.getUser",username);
return record;
} public SqlMapClient getSqlMapClient() {
return sqlMapClient;
} public void setSqlMapClient(SqlMapClient sqlMapClient) {
this.sqlMapClient = sqlMapClient;
}

}