@ CachePut public Result updateUser (User user) { } @ Cacheable public Result getUserList () { } query the (getUserList) of all users and store it in the cache. After modifying the individual user information (updateUser), how to update the cache o...
I have changed the database configuration file and changed the database table and field code to utf8-mb4, and restarted the database. Why do you still not support emoj emoticons? Using the ssm development framework, the error Incorrect string value: ...
recently I listened to a lecture on spring source code, in which I didn t quite understand the delegation mode. The delegation model that I understand is an intermediary. Class An encapsulates the method of class B, so that other classes just need to t...
just started the SpringMVC, development tool for IDEA, to write according to the sample code, the code should be no problem run the program: 404: the jre configured by tomcat is consistent with the jre in the system environment I really don t know...
cglib dynamic proxy, why does a () call the b (), of the current class this b () is the b (), of the parent class and not the b () of the subclass generated by cglib? @Component public class MyTest { public void a() { System.out.println(&qu...
problem description feign infinite retry, the circuit breaker is triggered repeatedly, the circuit breaker method will still enter, and the exception can also be caught, but for some reason, feign is my infinite request. the environmental backgroun...
now insert data into a table in mysql, and the primary key will be duplicated. The data sent will have a timestamp. When the data is repeated, the nearest one needs to be stored according to the timestamp. At a later stage, there will be millions of pie...
problem description use the Spring framework, start a new thread in Service, and use RequestAttributes ra = RequestContextHolder.getRequestAttributes (); in the new thread to get null,. Is there any way to solve it? the environmental background of...
(English) the consumer with integrated ribbon+RestTemplate invokes the server interface, and the ribbon.ReadTimeout,ribbon.ReadTimeout configuration does not work. If the caller configures the timeout of hystrix, a circuit breaker returns an error messa...
problem description how does the webflux, of spring5 return custom json data? related codes Please paste the code text below (do not replace the code with pictures) when webflux is not available on the server, my service is written like this ...
problem description the system has a way to increase the user s balance. Use mysql to increase the balance field update table set column = column + n . The database uses the rds, version of aws MySQL 5.6.27 . the environmental background of the p...
Environment: Spring3 SpringMvc Hiberate4 SqlServer2005 Oracle11g now it s time to replace the sqlServer database with the oracle database. After changing the database configuration, the project can start normally, but an error will be reported as soo...
I now have a requirement that applications containing multiple Spring Boot module are merged and packaged into a single war, each module is a separate business and has its own context path. the production environment of customers is their own Paas pla...
spring transaction problem, in a method, you need to update the data of a table and use the latest data. How should you write annotations using things? ...
BeanPostProcessor defines two methods, postProcessBeforeInitialization and postProcessorAfterInitilazation, while InstantiationAwareBeanPostProcessor defines another pair of post-processing methods. Are postProcessBeforeInstantiation and postProcessAfter...
problem description currently, I am learning a micro-service project, which uses Zuul service gateway and uses ZuulFilter filter of pre type to implement Token login authentication. However, during junit testing under Spring Boot Test, there is an err...
problem description after reading the official brief guidebook and some blog posts, there is no mention of the method of caching specified redis data structures in an annotated manner. all want to ask whether it is not possible to cache specified red...
problem description js page error the environmental background of the problems and what methods you have tried this is a new editing page. The springMvc, used to return ModelAndView, did not return data, so it was wrong. I wanted to judge whether ...
< H2 > Spring source code about PostProcessorRegistrationDelegate? < H2 > Spring4.0 and above about PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors() A question of : in this method, we can see that it calls the following method se...
2018-10-09 1926 Freight 29.495 WARN 9942-[ost-startStop-1] ationConfigEmbeddedWebApplicationContext: Exception encountered during context initialization-cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error ...
problem description formmultipleselect the environmental background of the problems and what methods you have tried js related codes Please paste the code text below (do not replace the code with pictures) $( - sharpmultiselect ) .change...
I wonder if it s good to do this. I think generally module is divided into Controller service dao for example, a device monitoring system based on Web based on different types of devices (less than 10 expected) to build Module each Module will write...
both git merge and git rebase can be used to merge branches. Merge is to merge commit into a new commit . The operation of git rebase is also merging. For example, I want to merge the A branch into the master branch. The merge operation is as follows: ...
after looking at the DocBlockr plug-in, you can only add instructions to variables and function parameters . find a plug-in that can add comments to the attribute and method of the JS class ? ...
writes a class that wants to read the data from a file and then store the data in the database. saver.connectMongo() .then(async () => { const data = await saver.getFileContent(filename); console.log(data); saver.saveCodeToMongo1(data...