Several Methods for downloading files using JSP

1 window. Pen () Advantage: simple. Method: (1) 2 content-Disposition Advantages: Content-disposition is an extension of the mime protocol. The mime protocol instructs the mime user agent how to display additional files. When

Two JSP jump Methods

// Note: Chinese file names such as "target page. jsp" are not recommended.// Jump with session, without requestResponse.Sendredirect("Target page. jsp ");// Jump with session and request// You need to add the parameter request. setattribute ("myvar"

Differences between JSP and Servlet page jumps

  Servlet: Of course, in servlet, the jump usually occurs in methods such as doget and dopost.1) Redirect ModeResponse. sendredirect ("/a. jsp ");The path of the page is relative. Sendredirect can jump the page to any page, which may not be

How to obtain parameters of JSP pages by using actions in struts2

Instance: Now, a parameter named username is passed to the action on the JSP page. URL: http: // localhost: 8080/studentsystem/role_list.action? Username = qk12333.com 1. Get it through the Get Set Method Define a variable with the same name

JSP executes External commands

Here is an example: Runtime runtime = runtime. getruntime (); Process = NULL; String line = NULL; Inputstream is = NULL; Inputstreamreader ISR = NULL; Bufferedreader BR = NULL; String IP = "add the IP address you want to ping here "; //

JSP Chinese display Solution

I. garbled characters on the JSP page ii. garbled characters when the form is submitted to Chinese. III. Database Connection Chinese garbled characters often occur during JSP development, which may affect you, I am writing out the Chinese garbled

JSP automatic submission form

Response. setheader ("cache-control", "No-Cache "); Response. setheader ("cache-control", "must-revalidate "); Response. setdateheader ("expires", 0 ); %>        

Notes for introducing JS files in JSP page scripts

Sometimes, we have a lot of repeated code in the script code on multiple JSP pages, so we will think about how to reuse them. When using it, we need to pay attention to several issues:For example, there are two files: toolbar. js and Main.

Select Association in JSP

Problem: TableCode nameCompany 1, 0001Company 2, 0002Table BMaincode subcode subname0001 1001 department 10001 1002 Department 20002 2001 Department 30002 2002 Department 4 Two select statements. If Company 1 is selected as the first select

Question about access to struts2 value stack through El expressions on JSP pages

Previously, using the SSH framework, the queried data is always stored in the session or request in the action, and then transmitted to the foreground for display; but then I saw some code declare a list or other member variables in the action, and

Obtain the database from textarea in JSP, and then display the format Control

This format control and editing works with FCKeditor, Which is perfect. The use of FCKeditor is briefly introduced in other blog posts. When reading data from textarea and then reading data from the database, the simplest way to display the data to

JSP web application development questions and answers

1. Which of the following methods are generally implemented during servlet execution? A: Which of the following methods are generally implemented during servlet execution? (1) Public void Init (servletconfig config) (2) Public servletconfig

Paging Technology for JSP Database Query

Package bean; Public class page {Private int totalpage; // the total number of pages.Private int currentpage; // the current page number.Private int totalrecord; // The total number of recordsPrivate int currentrecord; // number of current

JSP and El expressions

I. Several Action elements of JSP: Three (custom tags embedded in JSP for the server) 1. jsp: include: Implement Dynamic include attribute: page. the URL of the target component. Starting with "/", it indicates the absolute path. 2. jsp: forward:

How to get the current system time on the JSP page

From: http://hi.baidu.com/itfuck_/item/803662469cdf7baa61d7b945 1: Import java. util .*; Int y, M, D, H, mm;Calendar c = calendar. getinstance ();Y = C. Get (calendar. year); // yearM = C. Get (calendar. month) + 1; // monthD = C. Get (calendar. day_

JSP standard tag Library

tld

The standard tag Library (jstl) is a set of custom tags that implement many common web site functions in standardized formats. In the JSP Best Practices Section, Brett McLaughlin will introduce you to jstl and explain how to change JSP pages to use

JSP redirection and forwarding

After you log on to the system, you need to provide literature search, that is, directly go to the nutch search interface, and then connect to the page. One is personal space management, and the other is global document analysis, so how can we

JSP Chinese problems

I. garbled characters are displayed on the JSP page. II. garbled characters occur when the form is submitted to Chinese. III. Database ConnectionChinese garbled characters often occur during JSP development, which may affect you, I am writing out

Necessity of JSP database connection pool

Recently I have made frequent connections to the database JSP, and the necessity of the database connection pool is given here. For JSP, a good J2EE server is necessary. jboos and WebLogic are both good solutions. In general, when developing

Use cos in JSP to upload Web files (Modified Version)

cos

1. download the latest cos package (http://www.servlets.com/cos/cos-05Nov2002.zip), decompress the COs. Jar under the lib directory to add to classpath. 2. Compile a JSP file to be uploaded. For convenience, you can use a simple HTM file. on this

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