浏览器打开页面实现文件下载的程序代码(php/jsp/java)
浏览器打开页面实现文件下载的程序代码(php/jsp/java) 有需要学习的同学可参考一下。
tomcat中配置如下:
代码如下 | 复制代码 |
|
对于如上配置,当访问扩展名txt或jpg的资源时就出现下载提示框,如果只需要对某些提到的资源让其出现下载提示框,上述配置就不行了,解决的方法是在资源的response头中设置content-type即可,例如:
php 中
代码如下 | 复制代码 |
header("Content-type:application/octet-stream"); |
下载文件程序
代码如下 | 复制代码 |
header("content-type:text/html; charset=utf-8"); $file_name=$_GET['name']; //服务器的真实文件名 $file_realName=urldecode($_GET['real']); //数据库的文件名urlencode编码过的 $file_dir="upload/"; $file = fopen($file_dir . $file_name,"r"); // 打开文件 // 输入文件标签 header( "Pragma: public" ); header( "Expires: 0" ); Header("Content-type: application/octet-stream"); Header("Accept-Ranges: bytes"); Header("Accept-Length: ".filesize($file_dir . $file_name)); Header("Content-Disposition: attachment; filename=" . iconv("UTF-8","GB2312//TRANSLIT",$file_realName)); // 输出文件内容 echo fread($file,filesize($file_dir . $file_name)); fclose($file); exit; ?> |
java 中
代码如下 | 复制代码 |
response.setContentType("application/octet-stream"); resp.setHeader("Content-Disposition", "attachment;filename="downloaded.txt"); |
如果需要为下载设置一个保存的名字,可以用Content-Disposition属性来指定。
实例
代码如下 | 复制代码 |
response.reset();//可以加也可以不加 |

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

IIS and PHP are compatible and are implemented through FastCGI. 1.IIS forwards the .php file request to the FastCGI module through the configuration file. 2. The FastCGI module starts the PHP process to process requests to improve performance and stability. 3. In actual applications, you need to pay attention to configuration details, error debugging and performance optimization.

After the USDT transfer address is incorrect, first confirm that the transfer has occurred, and then take measures according to the error type. 1. Confirm the transfer: view the transaction history, obtain and query the transaction hash value on the blockchain browser. 2. Take measures: If the address does not exist, wait for the funds to be returned or contact customer service; if it is an invalid address, contact customer service and seek professional help; if it is transferred to someone else, try to contact the payee or seek legal help.

Binance is the overlord of the global digital asset trading ecosystem, and its characteristics include: 1. The average daily trading volume exceeds $150 billion, supports 500 trading pairs, covering 98% of mainstream currencies; 2. The innovation matrix covers the derivatives market, Web3 layout and education system; 3. The technical advantages are millisecond matching engines, with peak processing volumes of 1.4 million transactions per second; 4. Compliance progress holds 15-country licenses and establishes compliant entities in Europe and the United States.

Can. The two exchanges can transfer coins to each other as long as they support the same currency and network. The steps include: 1. Obtain the collection address, 2. Initiate a withdrawal request, 3. Wait for confirmation. Notes: 1. Select the correct transfer network, 2. Check the address carefully, 3. Understand the handling fee, 4. Pay attention to the account time, 5. Confirm that the exchange supports this currency, 6. Pay attention to the minimum withdrawal amount.

EU MiCA compliance certification, covering 50 fiat currency channels, cold storage ratio 95%, and zero security incident records. The US SEC licensed platform has convenient direct purchase of fiat currency, a ratio of 98% cold storage, institutional-level liquidity, supports large-scale OTC and custom orders, and multi-level clearing protection.

The steps to register an Ouyi account are as follows: 1. Prepare a valid email or mobile phone number and stabilize the network. 2. Visit Ouyi’s official website. 3. Enter the registration page. 4. Select email or mobile phone number to register and fill in the information. 5. Obtain and fill in the verification code. 6. Agree to the user agreement. 7. Complete registration and log in, carry out KYC and set up security measures.

Domestic user adaptation solutions include compliance channels and localization tools. 1. Compliance channels: Franchise currency exchange through OTC platforms such as Circle Trade, domestically, they need to go through Hong Kong or overseas platforms. 2. Localization tools: Use the currency circle network to obtain Chinese information, and Huobi Global Station provides a meta-universe trading terminal.

To safely download the Binance APP, you need to go through the official channels: 1. Visit the Binance official website, 2. Find and click the APP download portal, 3. Choose to scan the QR code, app store, or directly download the APK file to download to ensure that the link and developer information are authentic, and enable two-factor verification to protect the security of the account.
