Can't read form data of http post request in java

Question

The program just read form head and stops.

//...

Socket client = server.accept();
BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));

System.out.println("Request:");

while ((line = in.readLine()) != null)
    if (line.length() > 0)
    System.out.println("\t" + line);
        else break;

in.close();
client.close();

When I try to submit some form on browser:

Waiting for request...
Connection accepted.
Request:
    POST /form.php HTTP/1.1
    Host: x-x-x-x
    Connection: keep-alive
    Content-Length: 31
    Cache-Control: max-age=0
    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
    Origin: http://neviat.us.to
    User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36
    Content-Type: application/x-www-form-urlencoded
    Referer: http://x-x-x-x
    Accept-Encoding: gzip,deflate,sdch
    Accept-Language: pt-BR,pt;q=0.8,en-US;q=0.6,en;q=0.4
Connection closed.

I got the Content-Length, but nothing about the content itself. ¬¬ I thougth that could be the else break;, so I took it off and tried again:

Waiting for request...
Connection accepted.
Request:
    POST /buy.php HTTP/1.1
    Host: x-x-x-x
    Connection: keep-alive
    Content-Length: 31
    Cache-Control: max-age=0
    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
    Origin: http://neviat.us.to
    User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36
    Content-Type: application/x-www-form-urlencoded
    Referer: http://x-x-x-x
    Accept-Encoding: gzip,deflate,sdch
    Accept-Language: pt-BR,pt;q=0.8,en-US;q=0.6,en;q=0.4

    // stop here, waiting for stream...

But the content isn't there too.

How can I get it?

Michael · Accepted Answer · 2014-07-17 21:36:16Z

0

Change:

if (line.length() > 0)

to

if (line.length() > -1)

lines of 0 length are perfectly valid

answered Jul 17, 2014 at 21:36

Michael

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1 Comment

Mateus Pires Over a year ago

But even if I did not check it and print all I get, the content is not printed.

Tapan · Accepted Answer · 2020-02-07 06:30:22Z

0

Change In code:

//...

Socket client = server.accept();
BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));

System.out.println("Request:");

while ((line = in.readLine()) != -1)
    if (line.length() > 0)
    System.out.println("\t" + line);
        else break;

in.close();
client.close();

answered Feb 7, 2020 at 6:30

Tapan

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