Programming VIP

Use filtering to realize permission verification Train of thought analysis: 1. When the user is not logged in In addition to accessing the login interface and registration login interface and login You can't access other pages except do. If you visit other pages, you will enter the login interface 2. When the user logs in 1) There is use ...

catalogue 1 login 1.1 login interface  1.2 Servlet 2 index interface 3. Add function 3.1 add logic diagram 3.2 code modification  3.3 addUserServlet 4 delete function 4.1 delete logic diagram 4.2 delUserServlrt 5 modification function 5.1 modify logic diagram 5.2 findUserServlet 5.3 udate html page code 5.4 updateUserServlet 6 ...

1,enctype="multipart/form-data" <form method="post" action="route" enctype="multipart/form-data"> Set the enctype attribute in the form tag: enctype = "multipart / form data". enctype specifies the encoding type used by the browser when sending data back to the server. enctype is short for EncodeType. Attribute values are: a ...

Servlet (III) -- ServletContext, filter, JSP 1, ServletContext 1. ServletContext overview 2. Get ServletContext object 3. ServletContext function a. Get the real path of the project b. Get project context path c. Global container 4. ServletContext features 5. Above code 6. Small case - ServletContext counts the number of ...

1, Servlet basic usage   servlet is a Java application running on the web server. It is written in Java language and has the advantages of Java language. The difference between servlet and Java program is that servlet object mainly encapsulates the processing of HTTP requests, and its operation needs the support of servlet container ( ...

1, C/S and B/S   C/S is also called Client/Server or Client/Server mode. The server usually adopts high-performance PC, workstation or minicomputer, and adopts large database system, such as Oracle, Sybase, Informix or SQL Server. The client needs to install special client software, such as Youku client.   B/S is the abbreviatio ...

*In 2017, at the request of the company, responsible for research and development of intelligent analysis platform, using OLAP technology to analyze tax data from multiple dimensions, levels and cross-business domains, discover data characteristics, summarize tax laws, and support leadership decision-making. After nearly a year, it was finally ...

Simple Shopping System People often go online to get enough, so the so-called shopping cart on the Internet should not be unfamiliar, so today we use the MVC design mode of javaweb to implement a case of online shopping system. The results are as follows:   A brief introduction to the three-tier architecture 1. Development Steps ...

preface: Apache ActiveMQ is a set of open source message middleware developed by Apache Software Foundation in the United States. It supports Java message service, cluster, Spring Framework, etc. With the start of middleware, two ports will be opened, 61616 is the work port, where messages are deliver ...

Student management system (BS version) & file upload 1, Student management system (BS version) 1.1 environment construction Create project, create package, add jar package Four jsp pages Home page( index.jsp) Use the index.jsp Yes, provide a hyperlink to all student list pages All st ...