问题描述
最近在做项目的过程中,遇到了一个让我觉得很困扰的问题,到这里来问一下各位! public String doQuery2() throws Exception {contractReviewInfo.setPopedom(getPopedom());if(!"1".equals(contractReviewInfo.getReadOnly())){contractReviewInfo.setErrorMessage(Message.MES_NO_POPEDOM);return "recordList2";}ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(ServletActionContext.getServletContext());BaseDao baseDao = (BaseDao) ctx.getBean("baseDao");contractReviewInfo.setContractClass(baseDao.getLovMappingValue("contract_class_contract"));String hql = "select a from ArchiveContractDraft a,ReviewInfo r where a.archiveContractCode = r.archiveContractNo and a.contractType = '2' and r.examineResults = '0' and r.reviewClass = '1'";String queryKey1 = contractReviewInfo.getQueryKey1();String queryKey2 = contractReviewInfo.getQueryKey2();if(queryKey1 != null && !"".equals(queryKey1)){hql = hql + " and a.contractDraftName like '%" + queryKey1 + "%'";}if(queryKey2 != null && !"".equals(queryKey2)){hql = hql + " and a.isUrgent = '" + queryKey2 + "'";}List<ArchiveContractDraft> draftlist = baseDao.find(hql);PaginationSupport paginationSupport = new PaginationSupport(draftlist,draftlist.size()/20,20,0);contractReviewInfo.setPaginationSupport(paginationSupport);contractReviewInfo.setStartIndex(0);return "recordList2";} 以上代码,如果queryKey都为空的话,可以正常查出相应信息,如果选择了queryKey2,也可正常查出,但是当选择了queryKey1时,在plsql中可以查出的数据在程序中却查不出.不知道问题出在了那里,请大家帮忙看一下吧.下面我贴一下语句中涉及到的表的映射文件内容. <?xml version = '1.0'?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping><class name="com.yzwb.cctv.domain.ReviewInfo" table="REVIEW_INFO" schema="CCTV"><id name="ID" column="ID" type="string"><generator class="sequence"><param name="sequence">REVIEW_INFO_SEQ</param></generator></id><property name="submissionDate" column="SUBMISSION_DATE" type="date"></property><property name="censorsCertificate" column="CENSORS_CERTIFICATE" type="string"></property><property name="reviewTimes" column="REVIEW_TIMES" type="integer"></property><property name="accraditationDate" column="ACCRADITATION_DATE" type="date"></property><property name="examineResults" column="EXAMINE_RESULTS" type="string"></property><property name="alterReason" column="ALTER_REASON" type="string"></property><property name="firstExaminer" column="FIRST_EXAMINER" type="string"></property><property name="secondExaminer" column="SECOND_EXAMINER" type="string"></property><property name="comments" column="COMMENTS" type="string"></property><property name="reviewClass" column="REVIEW_CLASS" type="string"></property><property name="archiveAgreementNo" column="ARCHIVE_AGREEMENT_NO" type="string"></property><property name="archiveContractNo" column="ARCHIVE_CONTRACT_NO" type="string"></property><property name="creatDate" column="CREAT_DATE" type="date"></property><property name="creatPerson" column="CREAT_PERSON" type="string"></property><property name="giveUpReason" column="GIVEUP_REASON" type="string"></property></class></hibernate-mapping> 以上为ReviewInfo <?xml version = '1.0'?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping><class name="com.yzwb.cctv.domain.ArchiveContractDraft" table="ARCHIVE_CONTRACT_DRAFT" schema="cctv"><id name="archiveContractCode" column="ARCHIVE_CONTRACT_CODE" type="string"><generator class="assigned"></generator></id><property name="contractDraftName" column="CONTRACT_DRAFT_NAME" type="string"/><property name="archiveContractClass" column="ARCHIVE_CONTRACT_CLASS" type="string"/><property name="isUrgent" column="IS_URGENT" type="string"/><property name="createDate" column="CREATE_DATE" type="date"/><property name="createPerson" column="CREATE_PERSON" type="string"/><property name="createDepartment" column="CREATE_DEPARTMENT" type="string"/><property name="auditStatus" column="AUDIT_STATUS" type="string"/><property name="auditPerson" column="AUDIT_PERSON" type="string"/><property name="auditDate" column="AUDIT_DATE" type="date"/><property name="submissionStatus" column="SUBMISSION_STATUS" type="string"/><property name="filingStatus" column="FILING_STATUS" type="string"/><property name="contractType" column="CONTRACT_STATUS" type="string"/></class></hibernate-mapping> 以上为ArchiveContractDraftPS:我已经把映射文件配置在applicationContext文件中了,其他地方该配置的我也配置好了
解决方案
1、检查是否queryKey1 前后是否有空格，2、查看数据库是否只有一条记录是否满足queryKey1的查询条件，如果是的话，检查分页是否对了3、是否乱码，查看queryKey1的字符编码 打印出SQL debug的时候，copy生成的SQL放数据库里面执行PS:写个简单的单元测试吧，直接run下
解决方案二：
写的太乱，你自己调试下
解决方案三：
检查contractReviewInfo的queryKey1是否带空格。
解决方案四：
感觉说的有些乱，不知道是不是你这里写的有问题：if(queryKey1 != null && !"".equals(queryKey1)){ hql = hql + " and a.contractDraftName like '%" + queryKey1 + "%'"; } if(queryKey2 != null && !"".equals(queryKey2)){ hql = hql + " and a.isUrgent = '" + queryKey2 + "'"; } queryKey1和queryKey2都不为空的话，不知道你的组成的条件是不是你想要的。不过有一个办法，肯定可以找到问题：把sql打印出来，对比hibernate生成的sql和你写的sql的查询条件有什么不同