problem description when post does not pass any data, the backend will throw a HttpMessageNotWritableException exception. handles the exception of HttpMessageNotWritableException in the global exception handler. Normally, the result object PlatforRes...
the dubbo service of the project is deployed on 4 servers. There is a problem that I call the dubbo interface in controller, and the interface will insert some data, but I found in the background that 2 dubbo servers executed this interface in the same s...
because multiple provider are registered on two zookeeper, when using spring before, it uses dubbo configuration file and defines multiple registry, which can be distinguished by id. <dubbo:registry id="test1" protocol="zookeeper"...
< html >-sharp-sharp-sharp Why didn t js s currentStyle work? related codes Please paste the code text below (do not replace the code with pictures) < html lang= "en " > < head > <meta charset="UTF-8"> <title>Titl...
I will maven a new project first. Select webapp, buildpath is changed from jdk1.5 to 1.8, modified org.eclipse.wst.common.project.facet.core.xml < installed facet= "jst.web " version= "4.0 " > < installed facet= " wst.jsdt.web "version= " 1....
problem description in Chapter 7 of "Java concurrent programming practice ", the author implements thread cancellation through newTaskFor method encapsulation. The demo given is as follows: public abstract class SocketUsingTask <T> implement...
where is the crash log for ie? ...
existing classes that are outside my control class A { public void test () {} } classes under my control class B extends An implements I { public void test () { how to directly execute the default test method of I } } interface I { default voi...
Thank you. is an ordinary website, server, web page and so on. ...
the service has been generated @ WebService public class HelloWorld { @WebMethod public String sayHello(String str){ System.out.println("get Message..."); String result = "Hello World, "+str; ret...
problem description kafka producer reports an error the environmental background of the problems and what methods you have tried the same code, many computers are good. Only one station reported an error 2019-01-24 1515 DEBUG 55.811 DEBUG 448-[k...
1. In the development process encountered the need to receive array parameters, found a lot of methods on the Internet or reported the problem of illegal characters, I urge you to solve the problem. 2. Since I am using STS and embedded tomcat9, I have...
I implemented a login interface in spring boot and wrote a handleException method. At the breakpoint, I found that I only entered the handleException, not the login method. is it caused by the cause? How should I solve this problem? the following ...
Yarn resource scheduler, there are few related materials. If you want to use yarn to build a resource scheduling, schedule and monitor kafka, zookeeper, mongo and other components, it is best to use python to implement the task submission of Yarn, but yo...
one way to resolve hash conflicts is called chain address, which is to string together value of the same key with a linked list. So, when you use these same key values, you get the linked list, but there are multiple values in the linked list, which valu...
the project uses the API of RestTemplate to request other projects. When requesting the upload interface, you need to do FileSystemResource resource = new FileSystemResource (new File (filePath)); convert the file to FileSystemResource. Now my file is ...
I want to generate it automatically with mybatis generator, which is as follows in pom: <build> <plugins> <plugin> <groupId>org.mybatis.generator< groupId> <artifa...
as shown in the picture, the parking fee is charged per second every day, regardless of holidays. Note: the billing period is 24 hours, and the end of the day at 21 o clock must be next to the night start time at 21:00 the variables are daytim...
In springcloud micro-service, the gateway needs to carry two parameters, one is accessToken and the other is version version number, but the backend service does not need these two parameters. for example, the back-end service is originally like this ...
how to deal with fields with unique indexes in the case of sub-tables? there is no guarantee of constraints when adding new ones ...
which is better? ...
my requirements are simply described as: chunkSizemongodb node.jsn(n) writeStream what to do now is problems encountered: <0><chunkSize-1> Node.jsfdC seek (downloadpromisePromise): function download(filedata,username,chu...
in "JavaScript you don t know ", there is a paragraph about the inherited mixin implementation. The code is as follows: function mixin( sourceObj, targetObj ) { sourceObjtargetObjkey,targetObj for (var key in sourceObj) { if (!(key i...
the requirement given by UCD is that the paging of this table is centered at the bottom of the table, and the text that jumps quickly is jump to . After seeing that api can only set pages at the top or bottom of the table or above and below, ther...
set up a site on a computer in the company s local area network, and there is no problem for local area network access. Now you want the public network to access this site, how to configure it? ps: has a domain name ...