/*
*
* SendImage.java
* ggm
*
* photo sender
*
* Copyright 2010 NTU CSIE Mobile & HCI Lab
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package tw.edu.ntu.mgov1999.net;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
public class SendImage {
URL url;
HttpURLConnection conn;
String boundary = "--------httppost123";
Map<String, String> textParams = new HashMap<String, String>();
Map<String, byte[]> byteParams = new HashMap<String, byte[]>();
static String photo_name = "pic";
DataOutputStream ds;
public SendImage(String url) throws Exception {
this.url = new URL(url);
}
public void setUrl(String url) throws Exception {
this.url = new URL(url);
}
public void setTextPatams(Map<String, String> textParams){
this.textParams = textParams;
}
public void addTextParameter(String name, String value) {
textParams.put(name, value);
}
public void addByteParameter(String name, byte[] value) {
byteParams.put(name, value);
}
public void clearAllParameters() {
textParams.clear();
byteParams.clear();
}
//
public byte[] send() throws Exception {
initConnection();
try {
conn.connect();
} catch (SocketTimeoutException e) {
// TODO
throw new RuntimeException();
}
ds = new DataOutputStream(conn.getOutputStream());
writeTextsParams();
writeByteParams();
paramsEnd();
InputStream in = conn.getInputStream();
ByteArrayOutputStream out = new ByteArrayOutputStream();
int b;
while ((b = in.read()) != -1) {
out.write(b);
}
conn.disconnect();
return out.toByteArray();
}
//connection init
private void initConnection() throws Exception {
conn = (HttpURLConnection) this.url.openConnection();
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setConnectTimeout(10000); //10
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
}
//text
private void writeTextsParams() throws Exception {
Set<String> keySet = textParams.keySet();
for (Iterator<String> it = keySet.iterator(); it.hasNext();) {
String name = it.next();
String value = textParams.get(name);
ds.writeBytes("--" + boundary + "\r\n");
ds.writeBytes("Content-Disposition: form-data; name=\"" + name
+ "\"\r\n");
ds.writeBytes("\r\n");
ds.write(value.getBytes());
ds.writeBytes("\r\n");
}
}
//bytes
private void writeByteParams() throws Exception {
Set<String> keySet = byteParams.keySet();
for (Iterator<String> it = keySet.iterator(); it.hasNext();) {
String name = it.next();
byte[] value = byteParams.get(name);
ds.writeBytes("--" + boundary + "\r\n");
ds.writeBytes("Content-Disposition: form-data; name=\"" + name
+ "\"; filename=\"" + encode(String.valueOf(value.hashCode())) + "\"\r\n");
ds.writeBytes("Content-Type: " + "image/png" + "\r\n");
ds.writeBytes("\r\n");
ds.write(value);
ds.writeBytes("\r\n");
}
}
// form
private void paramsEnd() throws Exception {
ds.writeBytes("--" + boundary + "--" + "\r\n");
ds.writeBytes("\r\n");
}
// encode
private String encode(String value) throws Exception{
return URLEncoder.encode(value, "UTF-8");
}
}
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