如上所示，这就是全部默认的typeHandler了，注意一下46，47行可以看到默认有一个ArrayTypeHandler，顺便看一下它的源码：
/* * Copyright 2009-2012 The MyBatis Team * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.ibatis.type; import java.sql.Array; import java.sql.CallableStatement; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class ArrayTypeHandler extends BaseTypeHandler<Object> { public ArrayTypeHandler() { super(); } @Override public void setNonNullParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException { ps.setArray(i, (Array) parameter); } @Override public Object getNullableResult(ResultSet rs, String columnName) throws SQLException { Array array = rs.getArray(columnName); return array == null ? null : array.getArray(); } @Override public Object getNullableResult(ResultSet rs, int columnIndex) throws SQLException { Array array = rs.getArray(columnIndex); return array == null ? null : array.getArray(); } @Override public Object getNullableResult(CallableStatement cs, int columnIndex) throws SQLException { Array array = cs.getArray(columnIndex); return array == null ? null : array.getArray(); } }