1. Recently, when I was learning hibernate, a question suddenly occurred to me: can I use hibernate instead of a database to store data? Can it cooperate with hibernate with simple file access? 2. In order to answer this question, I think we should fi...
learn the problems encountered when the converter: now the time to convert the String format sent from the foreground into the date format, the converter only specifies the format before conversion string and the format after conversion date, but the fo...
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spring mvc uses the @ PostMapping,url path similar to this: xxx yyy {uid} runs using the jetty container. when postman simulates a request, the path must be xxx yyy {uid} ? uid=11111 to get the request; but using tomcat only needs xxx yyy 11...
data stores a field type (as an enumeration). When querying, it needs to be processed separately by using ifelse or switch, for example, 1 is converted to normal. I ve implemented it with the MongoDB statement, but how do I handle it in the springboot ...
by default loginPage is login No matter what url path you enter, it will automatically jump to the login page for example, typing: localhost:9090 login 123 in the URL column of the browser will automatically jump to localhost:9090 login, becau...
Import project prompt error: log4j:ERROR setFile (null,true) call failed. java.io.FileNotFoundException: d:classnet.log (the system cannot find the specified path.) ask for the guidance of the gods! ^ _ ^ ...
as a general practice, permissions have been assigned to the corresponding method in the controller layer, for example: PreAuthorize Secured RolesAllowed however, this way to change the code when adjusting permissions, the most annoying, while...
use mybatis to configure custom secondary cache. Using xml annotation can use < cache type= "com.test.dao.MybatisRedisCache " > to successfully use custom cache, but using @ CacheNamespace (implementation = MybatisRedisCache.class) on the dao i...
Front-end proxy server interface controlleraxios postaxiosgetoption tried to implement the filter interface in the background, but it didn t work. Later, I deleted it. Anyway, I have tried many methods that can be found on the Internet . ...
excuse me: String SCOPED_TARGET_NAME_PREFIX = "scopedTarget. "; under what circumstances will this prefix be used? public abstract class AbstractHandlerMethodMapping<T> extends AbstractHandlerMapping implements InitializingBean { ** ...
Why did spring fail to automatically match fields? Wechat s front end reads as follows: Java: ...
the error report is as follows: [ERROR] Failed to execute goal org.mortbay.jetty:jetty-maven-plugin:8.1.16.v20140903:run (default-cli) on project tccglxt4j: Failure: Address already in use: bind-> [Help 1] [ERROR] [ERROR] To see the full stack trace ...
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder alipay.app_id in value "${alipay.app_id}" Project structure I wrote it in application.properties before it was not configured. I can get the value by using...
Why should first get the LocaleContext and RequestAttributes, of the last request saved in the processRequest method of FrameworkServlet in springmvc and finally restore LocaleContext and RequestAttributes in finally ? What s the point of doing this? ...
now I want to get a content-type=application json callback data. Oddly enough, I can t get the data using @ RequestBody, as shown in the following code: @Data public class BaiduDocNofityResponse { private String messageId; private String messa...
such as title: requirement is: adapt to desktop phone tablet question: develop three sets of code or adapt? If you want to adapt, do you want to set a meta tag on the phone or something that contradicts the desktop and tablet? ...
I know you can Symbol (), but you can t new Symbol (), but how do you do that? or can I write a function that can only be called simply, without new, and report an error as soon as I add new ...
create-react-app my-app error operation not permitted ...
how to get the class type of the parameter list of the current method inside the method achieve the same effect as method.getParameterTypes (); inside the method; ...
create 3 bridges on the linux server (centos7.x) configure [root@Node1 ~]-sharp ip a 1: lo: < LOOPBACK,UP,LOWER_UP > mtu 65536 qdisc noqueue state UNKNOWN qlen 1 link loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1 8 scope host lo ...