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@ -18,8 +18,8 @@ import java.util.List; |
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/** |
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/** |
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* This utility class provides an abstraction layer for sending multipart HTTP |
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* This utility class provides an abstraction layer for sending multipart HTTP |
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* POST requests to a web server. |
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* POST requests to a web server. |
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* @author www.codejava.net |
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* |
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* |
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* @author www.codejava.net |
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*/ |
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*/ |
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public class MultipartUtility { |
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public class MultipartUtility { |
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private final String boundary; |
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private final String boundary; |
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@ -32,12 +32,10 @@ public class MultipartUtility { |
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/** |
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/** |
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* This constructor initializes a new HTTP POST request with content type |
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* This constructor initializes a new HTTP POST request with content type |
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* is set to multipart/form-data |
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* is set to multipart/form-data |
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* @param requestURL |
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* |
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* @param charset |
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* @throws IOException |
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* @throws IOException |
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*/ |
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*/ |
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public MultipartUtility(String requestURL, String charset) |
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public MultipartUtility(String requestURL, String charset) throws IOException { |
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throws IOException { |
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this.charset = charset; |
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this.charset = charset; |
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// creates a unique boundary based on time stamp
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// creates a unique boundary based on time stamp
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@ -48,26 +46,23 @@ public class MultipartUtility { |
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httpConn.setUseCaches(false); |
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httpConn.setUseCaches(false); |
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httpConn.setDoOutput(true); // indicates POST method
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httpConn.setDoOutput(true); // indicates POST method
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httpConn.setDoInput(true); |
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httpConn.setDoInput(true); |
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httpConn.setRequestProperty("Content-Type", |
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httpConn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary); |
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"multipart/form-data; boundary=" + boundary); |
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//httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
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//httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
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//httpConn.setRequestProperty("Test", "Bonjour");
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//httpConn.setRequestProperty("Test", "Bonjour");
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outputStream = httpConn.getOutputStream(); |
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outputStream = httpConn.getOutputStream(); |
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writer = new PrintWriter(new OutputStreamWriter(outputStream, charset), |
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writer = new PrintWriter(new OutputStreamWriter(outputStream, charset), true); |
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true); |
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} |
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} |
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/** |
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/** |
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* Adds a form field to the request |
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* Adds a form field to the request |
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* |
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* @param name field name |
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* @param name field name |
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* @param value field value |
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* @param value field value |
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*/ |
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*/ |
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public void addFormField(String name, String value) { |
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public void addFormField(String name, String value) { |
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writer.append("--" + boundary).append(LINE_FEED); |
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writer.append("--" + boundary).append(LINE_FEED); |
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writer.append("Content-Disposition: form-data; name=\"" + name + "\"") |
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writer.append("Content-Disposition: form-data; name=\"" + name + "\"").append(LINE_FEED); |
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.append(LINE_FEED); |
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writer.append("Content-Type: text/plain; charset=" + charset).append(LINE_FEED); |
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writer.append("Content-Type: text/plain; charset=" + charset).append( |
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LINE_FEED); |
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writer.append(LINE_FEED); |
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writer.append(LINE_FEED); |
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writer.append(value).append(LINE_FEED); |
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writer.append(value).append(LINE_FEED); |
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writer.flush(); |
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writer.flush(); |
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@ -75,21 +70,18 @@ public class MultipartUtility { |
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/** |
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/** |
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* Adds a upload file section to the request |
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* Adds a upload file section to the request |
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* |
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* @param fieldName name attribute in <input type="file" name="..." /> |
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* @param fieldName name attribute in <input type="file" name="..." /> |
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* @param uploadFile a File to be uploaded |
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* @param uploadFile a File to be uploaded |
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* @throws IOException |
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* @throws IOException |
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*/ |
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*/ |
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public void addFilePart(String fieldName, File uploadFile) |
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public void addFilePart(String fieldName, File uploadFile) throws IOException { |
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throws IOException { |
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String fileName = uploadFile.getName(); |
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String fileName = uploadFile.getName(); |
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writer.append("--" + boundary).append(LINE_FEED); |
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writer.append("--" + boundary).append(LINE_FEED); |
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writer.append( |
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writer.append( |
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"Content-Disposition: form-data; name=\"" + fieldName |
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"Content-Disposition: form-data; name=\"" + fieldName + "\"; filename=\"" + fileName + "\"") |
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+ "\"; filename=\"" + fileName + "\"") |
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.append(LINE_FEED); |
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.append(LINE_FEED); |
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writer.append( |
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writer.append("Content-Type: " + URLConnection.guessContentTypeFromName(fileName)) |
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"Content-Type: " |
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+ URLConnection.guessContentTypeFromName(fileName)) |
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.append(LINE_FEED); |
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.append(LINE_FEED); |
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writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED); |
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writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED); |
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writer.append(LINE_FEED); |
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writer.append(LINE_FEED); |
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@ -110,6 +102,7 @@ public class MultipartUtility { |
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/** |
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/** |
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* Adds a header field to the request. |
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* Adds a header field to the request. |
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* |
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* @param name - name of the header field |
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* @param name - name of the header field |
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* @param value - value of the header field |
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* @param value - value of the header field |
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*/ |
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*/ |
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@ -120,6 +113,7 @@ public class MultipartUtility { |
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/** |
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/** |
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* Completes the request and receives response from the server. |
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* Completes the request and receives response from the server. |
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* |
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* @return a list of Strings as response in case the server returned |
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* @return a list of Strings as response in case the server returned |
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* status OK, otherwise an exception is thrown. |
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* status OK, otherwise an exception is thrown. |
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* @throws IOException |
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* @throws IOException |
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@ -134,8 +128,7 @@ public class MultipartUtility { |
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// checks server's status code first
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// checks server's status code first
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int status = httpConn.getResponseCode(); |
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int status = httpConn.getResponseCode(); |
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if (status == HttpURLConnection.HTTP_OK) { |
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if (status == HttpURLConnection.HTTP_OK) { |
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BufferedReader reader = new BufferedReader(new InputStreamReader( |
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BufferedReader reader = new BufferedReader(new InputStreamReader(httpConn.getInputStream())); |
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httpConn.getInputStream())); |
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String line = null; |
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String line = null; |
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while ((line = reader.readLine()) != null) { |
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while ((line = reader.readLine()) != null) { |
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response.add(line); |
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response.add(line); |
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