Description: The bean 'userService' could not be injected as a 'com.phy.hemanresoruce.service.UserService' because it is a JDK dynamic proxy that implements: Action: Consider injecting the bean as one of its interfaces or forcing the use of CGLib-bas
当项目结构正常(spring管理的Bean在SrpingBoot启动类平级或下级,支持spring扫描时),实现类上加 @Service注解,在实现类中注入dao层的Bean时,项目无法启动,无法找到注入dao层的Bean,会报如下错: Description:Field businessInfoBelongRepository in com.example.test.service.impl.QueryHouseListImpl required a bean of type 'com.exa
问题根源: @Value("${wx.app.config.appid}") public Object appid; 异常信息: Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'wx.app.config.appid' in string value "${wx.app.config.appid}" at org.springframework.util.P
相关知识: 可以通过字符串的拼接来构造一个SQL命令字符串,但是SQL命令字符串的拼接确是造成“SQL注入攻击”的重要原因. 考虑下列例子:从ProductCategory表中检索出Name为“Bikes”的类别信息.(示例数据库采用红皮书的数据库:AdventureWorks_WroxSSRS2012) 如果要凭借字符串,将写成: string name = "Bikes"; string strCmd = "SELECT ProductCategoryID, Name F