mybatis中foreach遍历报错not iterable问题解决方法

Xrina

4972人浏览 · 2020-04-14 14:50:38

Xrina · 2020-04-14 14:50:38 发布

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression ‘deptIds’. Return value (1,939,956,961,964,966,969,972,975,978,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,691,692,693,928,929,930,941,942,946,948,949,950,951,954,957,960,962,965,967,970,973,976,979,984,985,1071,1074,694,696,705,713,724,726,741,759,782,794,804,818,826,833,840,935,697,706,714,725,727,742,760,783,795,805,819,827,834,841,934,698,707,715,728,743,761,784,796,806,820,828,835,842,699,708,716,729,744,762,785,797,807,821,829,836,843,700,709,717,730,745,763,786,798,808,822,830,837,701,710,718,731,746,764,787,799,809,823,831,838,702,711,719,732,747,765,788,800,810,824,832,839,703,712,720,733,748,766,789,801,811,825,932,704,721,734,749,767,790,802,812,931,722,735,750,768,791,803,813,936,723,736,751,769,792,814,737,752,770,793,815,738,753,771,816,739,754,772,817,740,755,773,756,774,757,775,758,776,777,778,779,780,781,1008,959,963,968,971,974,977,980,981,982,983,987,988,989,990,991,992,993,994,995,996,997,998,999,1000,1001,1002,1003,1004,1005,1006,1007,1009,1010,1011,1012,1013,1014,1015,1016,1017,1018,1019,1020,1021,1022,1023,1024,1025,1026,1027,1028,1029,1030,1031,1032,1033,1034,1035,1036,1037,1038,1039,1040,1041,1042,1043,1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,1056,1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,1072,1073,1075,844,845,849,850,857,859,860,864,871,872,874,875,876,877,878,879,885,887,888,896,903,913,918,921,925,933,695,846,851,858,861,865,873,880,886,889,897,904,914,919,922,926,847,852,862,866,881,890,898,905,915,920,923,927,848,853,863,867,882,891,899,906,916,924,854,868,883,892,900,907,917,937,938,855,869,884,893,901,908,856,870,894,902,909,895,910,911,912) was not iterable.
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
at org.mybatis.spring.SqlSessionTemplate $S q l S e s s i o n I n t e r c e p t o r . i n v o k e (S q l S e s s i o n T e m p l a t e . j a v a : 446) a t c o m . s u n . p r o x y .$ Proxy83.selectList(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230)
at com.baomidou.mybatisplus.core.override.PageMapperMethod.executeForMany(PageMapperMethod.java:173)
at com.baomidou.mybatisplus.core.override.PageMapperMethod.execute(PageMapperMethod.java:86)
at com.baomidou.mybatisplus.core.override.PageMapperProxy.invoke(PageMapperProxy.java:64)
at com.sun.proxy.$Proxy225.getDisposalResultList(Unknown Source)
at com.xxgk.modules.statistic.service.impl.DisposeQualityStatisticsServiceImpl.disposeSituation(DisposeQualityStatisticsServiceImpl.java:326)
at com.xxgk.modules.statistic.ReportServiceImpl.getDisposeQuality(ReportServiceImpl.java:1350)
at com.xxgk.modules.statistic.ReportServiceImpl.genReport(ReportServiceImpl.java:229)
at com.xxgk.modules.statistic.ReportController.genReport(ReportController.java:130)
at sun.reflect.GeneratedMethodAccessor1642.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:45005)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:112)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.xxgk.common.xss.XssFilter.doFilter(XssFilter.java:31)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.apache.shiro.web.servlet.AbstractShiroFilter $KaTeX parse error: Expected group after '_' at position 2612: \dotsrdContextValve._̲_invoke(Standar\dots$ ConnectionHandler.process(AbstractProtocol.java:834)
at org.apache.tomcat.util.net.NioEndpoint $S o c k e t P r o c e s s o r . d o R u n (N i o E n d p o i n t . j a v a : 1415) a t o r g . a p a c h e . t o m c a t . u t i l . n e t . S o c k e t P r o c e s s o r B a s e . r u n (S o c k e t P r o c e s s o r B a s e . j a v a : 49) a t j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r . r u n W o r k e r (T h r e a d P o o l E x e c u t o r . j a v a : 1149) a t j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r$ Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThreadSqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
… 86 more
程序中报错遇见这个问题,首先先检查一下传入的值是否为一个List,以下参数明显为一个用逗号拼接的String,但是在程序中当作了list进行处理

(1,939,956,961,964,966,969,972,975,978,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,691,692,693,928,929,930,941,942,946,948,949,950,951,954,957,960,962,965,967,970,973,976,979,984,985,1071,1074,694,696,705,713,724,726,741,759,782,794,804,818,826,833,840,935,697,706,714,725,727,742,760,783,795,805,819,827,834,841,934,698,707,715,728,743,761,784,796,806,820,828,835,842,699,708,716,729,744,762,785,797,807,821,829,836,843,700,709,717,730,745,763,786,798,808,822,830,837,701,710,718,731,746,764,787,799,809,823,831,838,702,711,719,732,747,765,788,800,810,824,832,839,703,712,720,733,748,766,789,801,811,825,932,704,721,734,749,767,790,802,812,931,722,735,750,768,791,803,813,936,723,736,751,769,792,814,737,752,770,793,815,738,753,771,816,739,754,772,817,740,755,773,756,774,757,775,758,776,777,778,779,780,781,1008,959,963,968,971,974,977,980,981,982,983,987,988,989,990,991,992,993,994,995,996,997,998,999,1000,1001,1002,1003,1004,1005,1006,1007,1009,1010,1011,1012,1013,1014,1015,1016,1017,1018,1019,1020,1021,1022,1023,1024,1025,1026,1027,1028,1029,1030,1031,1032,1033,1034,1035,1036,1037,1038,1039,1040,1041,1042,1043,1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,1056,1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,1072,1073,1075,844,845,849,850,857,859,860,864,871,872,874,875,876,877,878,879,885,887,888,896,903,913,918,921,925,933,695,846,851,858,861,865,873,880,886,889,897,904,914,919,922,926,847,852,862,866,881,890,898,905,915,920,923,927,848,853,863,867,882,891,899,906,916,924,854,868,883,892,900,907,917,937,938,855,869,884,893,901,908,856,870,894,902,909,895,910,911,912)

<select id="getDisposalResultList" resultType="java.util.Map">
        SELECT
           a.disposal_result_id as 'disposalResultId',
           a.id AS 'reportId'
        FROM
        <include refid="allListJoins" />
        <where>
            <include refid="commonCondition" /> 
            <if test="deptIds!=null ">
                AND dis.dept_id
                IN (
                <foreach collection="deptIds" separator="," item="tempDeptId">
                    #{tempDeptId}
                </foreach>
                )
            </if>
        </where>
    </select>

修改mybatis的xml文件为以下代码即可正常运行

   <if test="deptIds!=null ">
        AND dis.dept_id
        IN  ${deptIds} 
    </if>

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Xrina

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