mybatis怎么去遍历集合?

1.使用<foreach>标签遍历List集合

  案例：   1)查询出代码在List<String> accountCodes列表中的所有值

mapper文件:

 List<JournalLineAgeDTO> listGeneralLineAging(
RowBounds page,
 @Param("ew") Wrapper<GeneralLedgerJournalLineDTO> wrapper,
List<String> accountCodes);

xml文件:

<select id="listGeneralLineAging" resultType="com.hand.hcf.app.accounting.web.dto.JournalLineAgeDTO">

        select
        l.*
        from(
        select
        T.*,
        IF (T.days &gt;=0 and T.days &lt;=90,T.days,"")day1,
        IF (T.days &gt;=91 and T.days&lt;=180,T.days,"")day2,
        IF (T.days &gt;=181 and T.days&lt;=360,T.days,"")day3,
        IF (T.days &gt;=361 and T.days&lt;=720,T.days,"")day4,
        IF (T.days &gt;=721,T.days,"")day5
        from(
        select
        g.transaction_number,STR_TO_DATE(g.accounting_date,"%Y-%m-%d")accounting_date,g.accounting_period,g.attribute2,CONCAT(g.account_code,"-",(select a.account_desc from fec_mdata.sys_accounts a where g.account_code=a.account_code))accountName,
        g.entered_amount_dr,
        g.entered_amount_cr,
        g.account_code,
        r.company_id,
        DATEDIFF(now(),g.accounting_date)days
        from gl_journal_line g,fec_expense.exp_report_header r
        where g.transaction_number=r.requisition_number and r.status="1004"  and g.entered_amount_dr is not null
        <if test="accountCodes!=null and accountCodes.size()>0">
            and g.account_code in
            <foreach collection="accountCodes" item="item" separator="," open="(" close=")">
                #{item}
            </foreach>
        </if>

        union all

        select
        g.transaction_number,STR_TO_DATE(g.accounting_date,"%Y-%m-%d")accounting_date,g.accounting_period,g.attribute2,CONCAT(g.account_code,"-",(select a.account_desc from fec_mdata.sys_accounts a where g.account_code=a.account_code))accountName,
        g.entered_amount_dr,
        g.entered_amount_cr,
        h.company_id,
        g.account_code,
        DATEDIFF(now(),g.accounting_date)days
        from gl_journal_line g,fec_prepayment.csh_payment_requisition_head h
        where g.transaction_number=h.requisition_number and h.status="1004"  and g.entered_amount_dr is not null


        union all

        select
        g.transaction_number,STR_TO_DATE(g.accounting_date,"%Y-%m-%d")accounting_date,g.accounting_period,g.attribute2,CONCAT(g.account_code,"-",(select a.account_desc from fec_mdata.sys_accounts a where g.account_code=a.account_code))accountName,
        g.entered_amount_dr,
        g.entered_amount_cr,
        r.company_id,
        g.account_code,
        DATEDIFF(now(),g.accounting_date)days
        from
        gl_journal_line g,fec_expense.exp_report_header r
        where g.transaction_number=r.requisition_number and
        not EXISTS(select o.* from fec_payment.csh_write_off o where o.document_header_id=r.id)
        and  g.entered_amount_cr is not null
        )T
        )l

        <where>
            ${ew.sqlSegment}
        </where>
        order by l.transaction_number asc
    </select>