problem description writes a section to intercept methods that contain specified annotations. The runtime finds that if a subclass An inherits the abstract parent class B and implements the parent s abstract method, adding a specified comment to the...
the demo, database table on the reference network has been created automatically, but the following database errors were reported when the project started. Please ask the gods to give us some suggestions. Thank you . SQL: INSERT INTO ACT_GE_BYTEARRAY (...
in the process of development, because of the relationship between the calls of various micro-services, several micro-services need to be enabled locally, resulting in a computer memory utilization rate of more than 80%. Is there any way to share severa...
feels that the function of the api gateway is similar to that of springmvc s controller. the cluster of nginx+controller services can be load balanced controller can implement login and permission control controller can implement service routing ...
I remember that spring transaction management defaults to false, but there seems to be a conflict between many database pools, including druid, autocommit, which defaults to true,. In addition, autocommit, can also be configured in the configuration of ...
in the past, when I used JSP, I could save the information to session on the back end, and then directly use on the jsp page to get each of the information I want that represents the current user. Now I am using a pure html+ssm framework instead of a te...
in the spring container environment, does it ensure that the program is available by performing time-consuming logic through synchronized (this) locks? I tested that if there is no return value, the order can be guaranteed, and if there is a return val...
when using spring boot embedded server development, we all specify the port for web listening through server.port . Is there any way to enable a spring boot project to use multiple ports to listen for requests, for example, both 80 and 81 can receive re...
problem description: client consumption using kakfa0.9 locally, consumer groups are configured into the code, and each consumer group has one consumer. Just started the consumption, there is no problem with the code consumption. After two days suddenly...
problem description under the springboot environment, some classes in the jar package can be automatically assembled, while others can not. What s going on? ...
1. Use github source code to compile, package and run. github address: https: github.com apache incubator-dubbo.git uses 2.5.x branches. 2. After the packaging is completed, the tar.gz file in the target directory will be unzipped and published o...
I want to use apache as a reverse proxy, for example: ProxyPass ali app ...
how netty4.x acquires body: get ByteBuf through content () method and then readBytes to get byte [], ByteBuf byteBuf = reqMsg.content(); int length = byteBuf.readableBytes(); byte[] array = new byte[length]; ...
I used 1.x before, but I am not very proficient in transferring to java,1.x. Which is better to use for the new project? ...
configure concurrency spring.kafka.listener.concurrency=50 when a springboot program uses spring.kafka.consumer.group-id=orderGroup @ KafkaListener (topics = "orders "). if the program deploys two instances , are there 100 consumer threads that be...
how does intellij modify the source code of maven jar packages, what plug-ins or other ways do you use ...
entity 1 inherits another entity 2. Entity 2 is a public entity with id,createDate and other common attributes, so entity 1 does not need to write these fields, but the table cannot be built, and an error is reported: Error starting ApplicationContext....
this is to get List < PortfolioMemberView > at the Dao layer, and I am in the public List<PortfolioMemberView> getPortfolioMemberViewByPid(Integer pid){ portfolioId System.out.print(pid); try { Session sessi...
spring security, is used in the project and csrf is enabled template engine is freemarker added csrf token input to login.ftl so now I have a question. Why do newly opened pages also have the problem of csrf token invalidation ...
below is the form I use to update the broker data. There is a value of radio that I need to enter in the form. I take the value of the database and fill it into the input item. But only radio, the property of type, is not checked. So I wrote a paragraph...