我的原因是:创建session 的时候加入了拦截器Interceptor, 但在拦截器的实现类内的public String onPrepareStatement(String sql)方法返回了一个null值,所以出现了上面的异常. public class ForumInterceptor implements Interceptor, Serializable{ ... ... @Override public String onPrepareStatement(String arg0) { // TOD...
需要安装https://www.microsoft.com/en-us/download/details.aspx?id=40762 xuxu_dragon 粉丝-1关注 -11 +加关注 0 0 升级成为会员
我们可以在SQL标签的resultMap属性中配置多个// <resultMap>标签的id,它们之间通过","分隔,实现对多个结果集的映射List<ResultMap> resultMaps = mappedStatement.getResultMaps();intresultMapCount = resultMaps.size(); validateResultMapsCount(rsw, resultMapCount);while(rsw !=null&& resultMapCount > resultSet...
org.apache.ibatis.exceptions.TooManyResultsException是MyBatis框架中的一个异常,用于指示在执行查询时,selectOne()方法期望返回单个结果(或null),但实际上返回了多个结果。这个异常表明查询条件不够具体,导致数据库返回了多于一个的匹配记录。 2. 分析为什么selectOne()方法会抛出TooManyResultsException异常 selectOne()...
Consequently, one always ends up resorting to writing defensive utility functions that check if a string is null or empty where the difference is irrelevant. Such simple things really make life and code unnecessarily complicated. With the addition of Nullable<T>, things could even [get] stranger...
;-) When you have a null date in the table, and therefore return an empty string to .NET, how does .NET translate it? Does it give you the DateTime.MinValue? Isn't it something like 1900-01-01? If so, then I'd recommend at the very least to use that date in your query ...
Current is null Atleast one checkbox is compulsory to be checked Attempt by method 'Microsoft.VisualBasic.CompilerServices.Symbols+Container.InvokeMethod(Method, System.Object[], Boolean[], System.Reflection.BindingFlags)' to access method 'System.Data.Common.DataRecordInternal.get_Item(System.String)...
string to System.Management.Automation.ScriptBlock Cannot use Set-Acl properly despite being file owner and being a member of Administrators Group. Cannot validate argument on parameter 'Name'. The argument is null or empty. Provide an argument that is not null or empty, and then try the ...
Null value consistently returned by Laravel .env variable, Concurrent Requests Cause Laravel 5.0's env() Function to Return Null, Storing an Empty String as 'null' in the Laravel 5 .env File, Null value returned by Laravel's fill method
CatalogEmpty field CellStorageGetResponseItemCatchUnknownException field CentralAdministrationDisplayName field CentralAdminSiteTitle field CentralAdminTemplateMisMatch field Cert_CertificateAuthorityNotFound field Cert_CertificateChainNullOrEmpty field Cert_CertificateFoundMultiple field Cert_CertificateNotFound field Ce...