主要区别就是#带双引号,$不带 例如:#{id}代表'id',${id}代表id 下面是Mybatis @Select注解方式的sql @Select("select id,name from user where id=#{id}") public User getUser(@Param("id")long id); @Select("select id,name from user where id=${id}")public User ge
1.下载Qrcode库源码,下载地址:http://www.codeproject.com/Articles/20574/Open-Source-QRCode-Library 2.打开源码时,部分类库可能会加载失败,不用理会,只需正常加载 QRCodeLib.QRCodeSampleApp 即可. 3.生成时,会提示编译出错,Error'ThoughtWorks.QRCode.Properties.Resources' does not contain a definition for 'Get