How t send multiple parameters to mybatis xml mapper file?

Problem

Using a single parameter is very easy. The example on page 30 of the user guide shows this (see below). But How do we use multiple parameters?
UserMapper.xml:

<select id=”selectUser” parameterType=”int” resultType=”User”>
  select id, username, hashedPassword
  from some_table
  where id = #{id}</sql>

UserMapper.java:

public interface UserMapper{
  User selectUser(int id);
}

Solution

1. Add the @Param("name") to your Mapper.java
2. Change the parameterType in Mapper.xml to "map"

1. Add the @Param("name") to your Mapper.java

UserMapper.java:

import org.apache.ibatis.annotations.Param;
public interface UserMapper{
   User selectUser(@Param("username") String usrename, 

                   @Param("hashedPassword") String hashedPassword);
}

2. Change the parameterType in Mapper.xml to "map"

UserMapper.xml:

<select id=”selectUser” parameterType=”map” resultType=”User”>
  select id, username, hashedPassword
  from some_table
  where username = #{username}
  and hashedPassword = #{hashedPassword}</sql>

see :

http://code.google.com/p/mybatis/wiki/HowToSelectMultipleParams