mapper中设置typeHander
<resultMap id="BaseResultMap" type="jp.co.xxx.dto.CommunicationHistoryDetailDto">
<result column="photoTemplates" jdbcType="ARRAY" property="photoTemplates" typeHandler="jp.co.xxx.dao.common.ArrayTypeHandler"/>
</resultMap>
SQL片段
select
array_agg(t2.photo_template) as photoTemplates
from
...
自定义typeHander
public class ArrayTypeHandler extends BaseTypeHandler<Object[]> {
private static final String TYPE_NAME_VARCHAR = "varchar";
private static final String TYPE_NAME_INTEGER = "integer";
private static final String TYPE_NAME_BOOLEAN = "boolean";
private static final String TYPE_NAME_NUMERIC = "numeric";
@Override
public void setNonNullParameter(PreparedStatement ps, int i, Object[] parameter, JdbcType jdbcType) throws SQLException {
String typeName = null;
if (parameter instanceof Integer[]) {
typeName = TYPE_NAME_INTEGER;
} else if (parameter instanceof String[]) {
typeName = TYPE_NAME_VARCHAR;
} else if (parameter instanceof Boolean[]) {
typeName = TYPE_NAME_BOOLEAN;
} else if (parameter instanceof Double[]) {
typeName = TYPE_NAME_NUMERIC;
}
if (typeName == null) {
throw new TypeException("ArrayTypeHandler parameter typeName error, your type is " + parameter.getClass().getName());
}
Connection conn = ps.getConnection();
Array array = conn.createArrayOf(typeName, parameter);
ps.setArray(i, array);
}
@Override
public Object[] getNullableResult(ResultSet resultSet, String s) throws SQLException {
return getArray(resultSet.getArray(s));
}
@Override
public Object[] getNullableResult(ResultSet resultSet, int i) throws SQLException {
return getArray(resultSet.getArray(i));
}
@Override
public Object[] getNullableResult(CallableStatement callableStatement, int i) throws SQLException {
return getArray(callableStatement.getArray(i));
}
private Object[] getArray(Array array) {
if (array == null) {
return null;
}
try {
return (Object[]) array.getArray();
} catch (Exception e) {
}
return null;
}
}
实体类CommunicationHistoryDetailDto片段
private ...
private String[] photoTemplates;
private ...