David Thornley f7d9d657e4 functional for existing URLs but 404 redirects are not fetched.... | vor 6 Jahren | |
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write a simple program that fetches a URL.
There is a Linux/Unic/Mac commandline tool named curl. It Fetches a url and prints it to the terminal output.
Write a simple tool `fido` that takes an argument from the commandline, and fetches the page at that address, printing it to standard out. (The terminal)
In InteeliJ, you will need to look for a Java library that can let you get the contents of a page from a given URL. There are several. Pick one that allows you to add it to the pom.xml file to get the library linked into your project.
Examples
fido https://google.com/zipcodewilmington
returns a page something like:
<!DOCTYPE html>
<html lang=en>
<meta charset=utf-8>
<meta name=viewport content="initial-scale=1, minimum-scale=1, width=device-width">
<title>Error 404 (Not Found)!!1</title>
<style>
*{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* > body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}@media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}#logo{background:url(//www.google.com/images/branding/googlelogo/1x/googlelogo_color_150x54dp.png) no-repeat;margin-left:-5px}@media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) 0}}@media only screen and (-webkit-min-device-pixel-ratio:2){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:54px;width:150px}
</style>
<a href=//www.google.com/><span id=logo aria-label=Google></span></a>
<p><b>404.</b> <ins>That’s an error.</ins>
<p>The requested URL <code>/zipcodewilmington</code> was not found on this server. <ins>That’s all we know.</ins>
Try a few of these,
fido https://news.ycombinator.com/
fido https://www.nytimes.com/
fido https://example.com/
fido http://lorempixel.com/400/200/
And discover your own pages as well.