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annotate src/luan/modules/url/MultipartClient.java @ 1165:668f29bc52ea

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clean up content-type
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 07 Feb 2018 23:16:12 -0700
parents 1a68fc55a80c
children 383f924dfe9d
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1 package luan.modules.url;
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2
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3 import java.io.OutputStream;
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4 import java.io.IOException;
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5 import java.net.HttpURLConnection;
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6 import java.util.List;
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7 import java.util.ArrayList;
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8 import java.util.Map;
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9 import java.util.HashMap;
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10 import luan.LuanTable;
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11 import luan.LuanException;
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12
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13
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14 public final class MultipartClient {
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15 private static final byte[] __CRLF = {'\r','\n'};
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16 private static final byte[] __DASHDASH = {'-','-'};
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17 private static final String __ISO_8859_1 = "ISO-8859-1";
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18
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19 private final Map params = new HashMap();
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20
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21 MultipartClient(Map params) throws LuanException {
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22 for( Object hack : params.entrySet() ) {
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23 Map.Entry entry = (Map.Entry)hack;
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24 String key = (String)entry.getKey();
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25 Object val = entry.getValue();
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26 List list = new ArrayList();
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27 if( val instanceof String ) {
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28 list.add(val);
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29 } else {
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30 if( !(val instanceof LuanTable) )
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31 throw new LuanException( "parameter '"+key+"' must be string or table" );
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32 LuanTable t = (LuanTable)val;
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33 if( !t.isList() )
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34 throw new LuanException( "parameter '"+key+"' table must be list" );
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35 for( Object obj : t.asList() ) {
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36 if( !(obj instanceof String) )
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37 throw new LuanException( "parameter '"+key+"' values must be strings" );
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38 list.add(obj);
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39 }
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40 }
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41 this.params.put(key,list);
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42 }
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43 }
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44
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45 public OutputStream write(HttpURLConnection httpCon) throws IOException {
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46 String boundary = "luan" + System.identityHashCode(this) + Long.toString(System.currentTimeMillis(),36);
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47 byte[] boundaryBytes = boundary.getBytes(__ISO_8859_1);
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48
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49 httpCon.setRequestProperty("content-type","multipart/form-data; boundary="+boundary);
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50 OutputStream out = httpCon.getOutputStream();
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51 for( Object hack : params.entrySet() ) {
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52 Map.Entry entry = (Map.Entry)hack;
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53 String name = (String)entry.getKey();
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54 List list = (List)entry.getValue();
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55 for( Object obj : list ) {
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56 String val = (String)obj;
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57 out.write(__DASHDASH);
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58 out.write(boundaryBytes);
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59 out.write(__CRLF);
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60 out.write(("Content-Disposition: form-data; name=\""+name+"\"").getBytes(__ISO_8859_1));
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61 out.write(__CRLF);
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62 out.write(__CRLF);
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63 out.write(val.getBytes());
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64 out.write(__CRLF);
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65 }
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66 }
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67 out.write(__DASHDASH);
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68 out.write(boundaryBytes);
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69 out.write(__DASHDASH);
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70 out.write(__CRLF);
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71 return out;
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72 }
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73 }