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java - Filtering order when Servlet filter uses annotation to declare filtering address?

First of all, I know that configuring filters under web. Filter filter, and finally go to Servlet: Servlet configuration: @WebServlet(name...

高洛峰 2017-05-17 09:59:11 0  1  831

jsp, servlet, dao implement MVC architecture where generally everyone closes the database connection

There are two main problems with a model like JSP+Servlet+Dao without using various frameworks. 1. In theory, Dao is responsible for the database, so all operations with the database (including closing connections, statements, and resultssets) should be completed within dao. . But sometimes in a ser...

為情所困 2017-05-16 17:06:07 0  1  653

When a servlet is called, a page is loaded from a JSP file

Can I call a servlet from a JSP file without using an HTML form? For example, display results from a database in an HTML table during page load.

P粉289775043 2023-08-24 12:47:14 0  2  841

java - What is the difference between the init method of servlet and the init method of selecting Filter to load the configuration file?

springMVC chooses the init method of servlet to load the configuration file, while jfinal chooses the init method of Filter to load the configuration file. What is the difference between the two? What are the reasons or advantages for this choice?

僅有的幸福 2017-05-17 10:07:44 0  2  1007

java - ssm integration gives an error when accessing the presentation layer. .

嚴(yán)重: Servlet.service() for servlet [tour-manager] in context with path [] threw exception [Handler processing failed; nested exception is java.lang.NoSuchMethodError: org.springframework.core.Meth...

phpcn_u1582 2017-05-18 10:44:03 0  1  947

java - error when adding cookie in servlet

1. An error is reported when adding cookies: {code...} I checked some error reports on the Internet, most of them are [32], [44], which is said to be caused by adding "," or spaces in the cookie. The code for login processing is as follows: {code...} The error occurs in addCookie.

滿天的星座 2017-06-15 09:22:04 0  1  1223

java - Partial thread SessionException: Session is closed! when Hibernate adds operation under high concurrency conditions.

Servlet + hibernate will cause org.hibernate.SessionException: Session is closed! in some threads under high concurrency conditions, but it will not occur under single-threaded conditions. {code...} BaseDAO.java {code...}

我想大聲告訴你 2017-06-12 09:22:23 0  2  1194

javascript - uploadify3.2 error when uploading files

uploadify3.2 error when uploading files. When uploading files, JS reports an error Cannot read property 'queueData' of undefined. The following is the code. There is only one System.out.println("aaa"); {code...} in the Servlet.

高洛峰 2017-07-05 10:47:18 0  1  1270

The difference between Nginx/Apache and Apache Tomcat

Nginx/Apache is a Web Server, and Apache Tomact is a servlet container. I would like to ask, what are the specific differences? Because if you use Apache Tomact, you already have the function of responding to http requests.

PHP中文網(wǎng) 2017-05-16 17:04:06 0  2  813

java-web - Java WEB: What kind of jar package must be placed under WEB-INF? If some packages are placed outside, tomcat will not be able to start.

There are two jar packages commons-fileupload-1.3.2.jar and commons-io-2.5.jar. I initially put these two packages outside like other packages, that is, after writing the relevant classes in External Libraries, web.xml configures servlet and mapping {code...} Then Tomcat cannot...

phpcn_u1582 2017-05-17 09:58:05 0  5  1247

jsp - javaweb about MVC framework

For example, on a user registration page, how to obtain the information submitted by the form for processing. After doGet and doPost are obtained, how to connect to the database to query whether the username (unique) is registered. Do I need to write the database connection code in the servlet? If w...

PHP中文網(wǎng) 2017-05-16 17:06:11 0  2  834

java - dubbo distributed call passing parameters

Background: The existing code is being modified. The original structure is to directly complete all business logic through the service() method of the servlet. Now the structure is modified, the service() method is split into several services, and the services are assembled through the dubbo framewo...

給我你的懷抱 2017-06-14 10:51:38 0  1  1031

The java servlet background exports tens of thousands of data to excel, which is too slow! Solve

Any good ideas? ?

黃舟 2017-05-17 10:09:22 0  1  843

java - When submitting a form, why does the action sometimes need to write the project name, and sometimes it only needs to write the servlet?

Why do we need to write the project name in the action? day08-request is the project name. Sometimes just write eservlet.

ringa_lee 2017-05-17 10:09:08 0  4  940

java - Why when accessing files through servlet, b.exe is converted to download, and a.png is opened with a browser? How to convert a.png to download?

How to convert a.png to download?

巴扎黑 2017-05-17 10:09:15 0  1  685

There is a little doubt about how the servlet filter in Java solves the problem of Chinese garbled characters. Is it necessary to use entrySet traversal here?

The filter code found on the Internet about solving the problem of Chinese garbled characters has a paragraph similar to the following: {Code...} This only modifies the value set in the map. This value set is a collection of String arrays. It is actually just modified. The elements in the String arr...

習(xí)慣沉默 2017-05-27 17:41:44 0  2  1208

Laravel Modal does not return data

I don't know why I'm not getting the value from the modal in my Laravel controller. Please check it for me. However, I use the same code for other modes and controllers. It's working and returning the value from the property without any issues. I'm using Laravel8 and php8.1; below is my code. app\Ht...

P粉174151913 2024-03-29 10:31:31 0  1  608

Can I use the automatic generation module of thinkphp5 in Windows 7 system? How to configure and use

明民 2017-10-10 17:04:14 0  2  1408

After installing the PHP toolbox, all the mysql tables in phpstudy that I installed before are gone. What should I do?

After installing the PHP toolbox, all the mysql tables in phpstudy that I installed before are gone. What should I do?

劉袁銘 2017-10-10 19:25:59 0  4  2965

mcrypt_get_key_size()

To use mcrypt_get_key_size() in php study, how to enable mcrypt_

劉袁銘 2017-10-10 19:47:34 0  1  1192