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1 package fschmidt.util.java;
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2
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3 import java.io.InputStream;
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4 import java.io.InputStreamReader;
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5 import java.io.OutputStream;
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6 import java.io.Reader;
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7 import java.io.IOException;
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8 import java.net.URLConnection;
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9 import java.net.HttpURLConnection;
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10 import java.net.URL;
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11 import java.util.Map;
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12 import java.util.HashMap;
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13
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14
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15 public final class UrlCall {
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16 public final URLConnection connection;
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17
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18 public UrlCall(String url) throws IOException {
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19 this(new URL(url));
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20 }
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21
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22 public UrlCall(URL url) throws IOException {
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23 connection = url.openConnection();
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24 }
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25
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26 public void acceptJson() {
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27 connection.setRequestProperty("accept","application/json");
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28 }
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29
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30 public String get() throws IOException {
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31 Reader in = new InputStreamReader(connection.getInputStream());
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32 String rtn = IoUtils.readAll(in);
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33 in.close();
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34 return rtn;
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35 }
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36
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37 public String post(String content,String contentType) throws IOException {
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38 HttpURLConnection connection = (HttpURLConnection)this.connection;
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39
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40 connection.setRequestProperty("Content-type",contentType);
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41 connection.setDoOutput(true);
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42 connection.setRequestMethod("POST");
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43
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44 byte[] post = content.getBytes();
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45 connection.setRequestProperty("Content-Length",Integer.toString(post.length));
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46 OutputStream out = connection.getOutputStream();
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47 out.write(post);
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48 out.flush();
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49
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50 Reader in;
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51 try {
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52 in = new InputStreamReader(connection.getInputStream());
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53 } catch(IOException e) {
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54 InputStream is = connection.getErrorStream();
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55 if( is == null )
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56 throw e;
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57 in = new InputStreamReader(is);
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58 String msg = IoUtils.readAll(in);
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59 in.close();
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60 throw new UrlCallException(msg,e);
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61 }
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62 String rtn = IoUtils.readAll(in);
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63 in.close();
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64 out.close();
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65 return rtn;
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66 }
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67
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68 public String post(String content) throws IOException {
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69 return post(content,"application/x-www-form-urlencoded");
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70 }
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71
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72 public String postJson(String content) throws IOException {
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73 return post(content,"application/json");
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74 }
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75
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76 }
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