67 lines
2.2 KiB
Java
67 lines
2.2 KiB
Java
package com.earth2me.essentials.update;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.math.BigInteger;
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import java.net.URL;
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import java.net.URLConnection;
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import java.nio.charset.Charset;
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import java.util.Map;
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import java.util.Random;
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public class PostToUrl
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{
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private final transient URL url;
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private final transient String boundary;
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private final transient Random random = new Random();
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private final static String CRLF = "\r\n";
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private final static Charset UTF8 = Charset.forName("utf-8");
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public PostToUrl(final URL url)
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{
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this.url = url;
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final byte[] bytes = new byte[32];
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random.nextBytes(bytes);
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this.boundary = "----------" + new BigInteger(bytes).toString(Character.MAX_RADIX) + "_$";
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}
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public String send(final Map<String, Object> data) throws IOException
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{
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final URLConnection connection = url.openConnection();
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connection.setRequestProperty("content-type", "multipart/form-data; boundary=" + boundary);
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final StringBuilder dataBuilder = new StringBuilder();
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for (Map.Entry<String, Object> entry : data.entrySet())
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{
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if (entry.getValue() instanceof String)
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{
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dataBuilder.append("--").append(boundary).append(CRLF);
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dataBuilder.append("Content-Disposition: form-data; name=\"").append(entry.getKey()).append('"').append(CRLF);
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dataBuilder.append(CRLF);
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dataBuilder.append(entry.getValue()).append(CRLF);
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}
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// TODO: Add support for file upload
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}
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dataBuilder.append("--").append(boundary).append("--").append(CRLF);
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dataBuilder.append(CRLF);
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connection.setDoOutput(true);
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final byte[] message = dataBuilder.toString().getBytes(UTF8);
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connection.setRequestProperty("content-length", Integer.toString(message.length));
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connection.connect();
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final OutputStream stream = connection.getOutputStream();
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stream.write(message);
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stream.close();
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final BufferedReader page = new BufferedReader(new InputStreamReader(connection.getInputStream(), UTF8));
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final StringBuilder input = new StringBuilder();
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String line;
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while ((line = page.readLine()) != null)
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{
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input.append(line).append("\n");
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}
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page.close();
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return input.toString();
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}
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}
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