We have a program that takes a url as a command line parameter. It fetches the url and print the headers and the content. The headers are printed to the console as a key-value dictionary, while the content is written to a file taken as an additional parameter. The http status code is the exit code for the application, except for 200, which should be mapped to 0(success) exit code. Also, if the content is html, the title is printed on the console.
To compile and run the project follow these simple steps.
- Java 1.8+
- Maven 3.6.0+
- Clone the repository
git clone git@github.com:Subhadeep2707/AssignmentExpertRec.git
cd AssignmentExpertRec
- Build the project using maven
mvn clean install
- Run the project
java -jar target\AssignmentExpertRec-1.0-SNAPSHOT-jar-with-dependencies.jar -u https://www.google.com -f google.txt
java -jar target\AssignmentExpertRec-1.0-SNAPSHOT-jar-with-dependencies.jar -u https://www.google.com -f google.txt
Output:
Status code = 200
File created: google.txt
Successfully wrote response body to the file.
Headers:
X-Frame-Options : SAMEORIGIN
Transfer-Encoding : chunked
Cache-Control : private, max-age=0
Server : gws
Alt-Svc : h3-29=":443"; ma=2592000,h3-T051=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
Set-Cookie : NID=210=ZMzDJa2iZ_LfFjYVUt2dn8XTeigI8G7qhgwsaoSDpf9AV9VKRz4zjw_bmj4hc6dvVdf7PGFOe1Iqrmcz5ssClveMR-0mS9pkbi09VdNjJ_94-Ihy7S8qjdEWhdBDqTUvNQGadIjWhNm137q8KIbfup8xJXfnrZOls7LSRbsD164; expires=Mon, 06-Sep-2021 23:14:23 GMT; path=/; domain=.google.com; HttpOnly
Expires : -1
P3P : CP="This is not a P3P policy! See g.co/p3phelp for more info."
X-XSS-Protection : 0
Date : Sun, 07 Mar 2021 23:14:23 GMT
Content-Type : text/html; charset=ISO-8859-1
Title = Google
Also, a file google.txt gets created inside AssignmentExpertRec directory, containing the response body for the url.