-
Gradle in the java project should uniformly manage the version of the jar package, and then how to refer to
ext {
springVersion = 4.3.10.RELEASE
}
compile(
org.springframework:spring-context: ,
)
...
-
Why does jpa one-way one-to-many association thymeleaf or stack overflow?
there is a set collection of tag classes in the user class;
maintain relationships only from the user class, one-to-many
@ OneToMany
@JoinTable(name="shuo_tag",
inverseJoinColumns=@JoinColumn(name="tag_id"),
jo...
-
Ready to learn distributed, I don't know where to start, ask the boss to give me an idea.
want to learn distributed preparation for job-hopping. I don t know where to start. Will zookeeper+dubbo only learn these two frameworks and ask the boss to show me the way? thank you ...
-
The project can't be opened by me.
before IDEA was updated, it was obviously adjusted not to delete the setting, but I don t know why the setting was restored. This is not the point. Today, the updated Javaweb project entered the project as it was after IDEA modified the code to open tom...
-
scan the @ RequestMapping annotation?">Will < context:component-scan base-package= "" / > scan the @ RequestMapping annotation?
,,Spring mvc:
<context:component-scan base-package="..." >
@Controller,@RequestMapping.
,<context:component-scan base-package="" >Spring,
Spring mvc,? ...
-
A small question about the usage of the MyBatis paging plug-in PageHelper
see the use of the PageHelper paging plug-in in a project
...
-
Can JAVA refactoring projects run independently?
in the learning web, section, it is said that some changes can be made based on the original project (project3) through refactoring. I have the supporting source code, so can those who directly import the newly refactored project (project4) run independ...
-
Java web operates on the files in the webcontent directory
Java web generates files dynamically if it is in the webcontent directory through sevlet. for example, 1) need to dynamically create a.txt under webontent 2) write to the a.txt file. 3) read the a.txt file. ...
-
There is an error in the forwarding address in Servlet. What is the matter?
webapp project of maven, after running, it was found that there was a problem with forwarding in Servlet. index.jsp:
<%
response.sendRedirect(request.getContextPath() + " bookServlet?method=getBooks");
%>
servlet:
public class Bo...
-
How to deal with the syntax of the jstl tag library (although it runs correctly) in IDEA?
uric:outJavaWeb,jstl1.2jarlib,.maven only those built with this selected one have these problems. I have also looked up some like https: stackoverflow.com que. like https: stackoverflow.com que. wow, I think it would be nice if it could be sol...
-
The concept of serialization
objects are transmitted in binary mode on the network. so for serialization, different serialization, the transferred object should be a binary stream. then why json and xml are also described as serialization. It is not very clear that both of them ha...
-
Java web request.getSession () source code
I want to look at the source code of HttpSession session = request.getSession (); and want to know how to get the of the current session....
-
Questions about Cookie and Session to enable users to log in-free?
normally, the validity time of the cookie should be the same as the destruction time of the session object. but if it is not the same, 1. The valid time for cookie is up, and the time for session destruction is not up. At this time, the jsessionid is ...
-
Refactoring-the same way to operate on different objects
description
trouble boss to point out how to reconstruct the operations of different objects with the same method?
At the bottom of is the code. The save methods here are all the same operation. The object is used as a reference here. I just want...
-
Why does Spring mvc need HandlerAdapter?
Spring mvc two components: HandlerMapping and HandlerAdapter; HandlerMapping can already help us match the specific controller (Controller)? then why do you need HandlerAdapter?? ...
-
The post request to get request parameter is missing.
there is a problem:
nginxsslhttpspostgetbodyparameter
postgetpostget
...
-
Project startup failed after java config class joined @ EnableWebMvc
1. I wanted to try spring mvc configuration without xml, but when I added @ EnableWebMvc to the java config class, the project failed to start. 2.HelloConfig:
@Configuration
@EnableWebMvc
@ComponentScan
public class HelloConfig implements WebMvcConf...
-
The problem of doGet method and doPost method in Java servlet
are these two methods called whenever an post request or a get request is encountered? then, if there are multiple requests in a web page, isn t it troublesome to call these two methods to solve ...
-
Why can't the resource be found when spring mvc sets the view suffix to html?
1. Files with suffixes jsp and html exist. When the suffix is set to jsp, access to the corresponding url can be accessed. When it is html, the access url cannot find resources. Why? I have guessed that it is because url-pattern is set to " ", but why...
-
Where should the Java thread pool be created?
problem description
where should the Java thread pool be created? Or whether a thread pool is used for one business, multiple businesses, or the whole project
...