after adding spring-boot-starter-data-jpa to your springboot project, when you unit test your repository with junit. There will be a lot of when starting the container through junit test case. The error of [Xlint:cantFindType] [AppClassLoader@xxxx] e...
problem description the environmental background of the problems and what methods you have tried related codes Please paste the code text below (do not replace the code with pictures) what result do you expect? What is the error message actu...
@ Scheduled timing (executed every three seconds) always takes a period of time and the timing will not be executed again. After restarting tomcat, the scheduled task will run again. What is the reason for ...
A string in this format: "["","",""]" how to convert to array format ["","",""] ...
novice to java, this may be a simple question for a veteran, but it really beats me as a novice to PHP. Recently, I am changing the springmvc framework used by a java project. Some of the query statements are as follows: public Predicate toPredicate(Ro...
problem description there is a doubt about the example code of learning rocketmq on the official website. The link: http: rocketmq.apache.org do... is the result of multiple if judgments in Subscription message sample code. What exactly does it mean...
I would like to ask you that when using mybatis, there is a need to replace some fields of dynamically generated sql according to a certain flag bit. For example, dao.query ( "dao.TestSettingMapper.qryData ", param) this method normally executes sql is...
our company is developed on the intranet, but cannot access the Internet. The company has its own maven private server, but it is still incomplete. I got the jar package outside through the coordinates, and then uploaded it to the company private server...
problem description java or PHP calls are supported first. It is best not to connect to the public network. You can customize the printed content for non-takeout or checkout use. ...
import java.util.EmptyStackException; import java.util.Stack; public class ArrayStack<E> implements TestStack<E>{ private E[] theArray; private int topOfStack; public static final int DEFAULT_CAPACITY = 20; public ArraySta...
the following is the document of Wechat handing out red packets https: pay.weixin.qq.com wik... the fourth parameter, merchant order number, I don t know what it is and where it comes from . Please check it manually. I can only take a screensho...
in the online springcloud tutorials, we often see the following code block under the root pom <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud< grou...
what I want to implement is a web service, and requests come in with a lot of filters tagged. My idea now is to make these filters into Vertical, and then communicate all through EventBus. Request to enter the first filter and throw it to the next one af...
if you want to do a voice broadcast function based on Java, the error mentioned above will occur at the step of new ActiveXComponent ( "Sapi.SpVoice "). You don t know what caused it, and you can t try the solution in other forums. ...
there is a main table that needs to load a child table, and a field in the child table is Lob to hold the picture. now the Lob field has data. When I query the main table data, I will report an exception Unable to access lob stream; nested exception ...
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Could not set property truckType of class com.cargopm.order.dto.OrderMainDto with value Cause: org.apache.ibatis.reflection.Refl...
@ PermitAll @ PreAuthorize ( "isAnonymous () ") @ PreAuthorize ( "permitAll ") all kinds of writing methods have been tried, but they are all invalid. It is impossible to request these authentication-free interfaces directly. < hr > all the writin...
previously saved a workplace folder with myecplise professional 2014 Learning web. Can I run the previous project with another version of myecplise now? I use ecplise to run and have the following picture error, so I am afraid that the wrong version o...
application.properties: spring.application.name=zookeeperserver server.port=8090 spring.cloud.zookeeper.connect-string=zookeeperIp:2181 spring.cloud.zookeeper.discovery.instance-host=localIp spring.cloud.zookeeper.discovery.instance-port=8090 Service ...
Let me ask you a question: A project uses ObjectOutputStream to serialize ClassA objects to save binaries. The B project deserializes this file, but ClassA is not in the same directory as the A project. Causes a Caused by: java.lang.ClassNotFoundExcept...
the following code , 2 , (workerstart,,) ...
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ask how to define the parent elements of h3PowerH4 as in the following cases: <div class="p1"> <h3>< h3> <h4>< h4> < div> <div class="p2"> <h3>< h3> <h4>< h4> < ...
as the title when writing a front-end page, the select 2 plug-in is used to achieve multiple selections, but the direction of the drop-down is uncontrollable. looking at the API document on the official website, we know that he can judge whether to e...
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