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File upload In order to upload the file successfully, you need to set the method attribute of the form to POST and the enctype to multipart / form data. Once it is set to multipart / form data, the browser will process the form data in binary. spring cannot process the file upload by default. You need to configure the MulipartResolver in the sp ...

When writing the front-end page, sometimes one or more lines of input boxes are added or reduced dynamically according to the business requirements. I saw that other people's writing is too complex before. I'll give you my simplified one for reference. To achieve the effect, click Add to add a new line of input box at the bott ...

There are many kinds of path jumps for servlets. Let's briefly list them today. The first is to use hyperlink path to access directly, which is divided into relative path and absolute path. public class RecServlet extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, ...

Syllabus 1. jsp form data change 2. Difference between form method get and post; 3. Character encoding Course notes 1, jsp form data change //First, query the database through id and display it in the form <% String id = request.getParameter("id"); String name =""; Class.forName("com.mysql.jdbc.Driver"); ...

After completing the configuration, take a simple example. Based on the quick start project, take a simple example to render a page through Thymeleaf. @Controller public class HelloController { @RequestMapping("/") public String index(ModelMap map) { // Add a property to read from the template map.addAttribute(" ...

Getting associated fields Sometimes a child page needs to get the value of the iframe page as the associated field between the child page and the parent yemi page. First obtain the html element of the parent page through parent.document, and then transfer the value of the parent page to the child page. The parent page adds th ...

Using pageoffice to realize document online editing and document flow 1: process Draft documents in the modified traceless mode, open them in the forced trace mode when leaders annotate their opinions, open them in the approval mode when the clerk cleans up the draft, and open the released official documents in the final read-only mode. Amon ...

1, Directory location 1. . / is the current directory. 2. / is the parent directory. 3. / is the root directory. The root directory refers to the top directory. It is relative to the subdirectory. Under the same level of directory <link rel="stylesheet" href="css/list_table.css"/> Get parent directory afvVoltage.js ...

1. Create project / module New empty project:springMvcStudy New module: type Maven webapp, name mvcStudy 2. Set Sources and Resources for module Create two new folders under mvcStudy/src/main: java,resourcesOpen File/Project Structure/Project Settings/Modules, select mvcStudy, and click the Sources tabSet the java folder to Sources and the ...

This article uses a project to explain the sql statement of creating table with mysql. jsp freshmen check in system to see how to analyze requirements and convert them into database statements. Pay attention to write notes when creating tables, and form a good habit. The super administrator table creation statement is as fol ...