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30
31 import java.awt.GridBagConstraints  ;
32 import java.awt.GridBagLayout ;
33 import java.awt.Insets ;
34 import java.awt.event.ActionEvent ;
35 import java.awt.event.ActionListener ;
36 import java.awt.event.WindowAdapter ;
37 import java.awt.event.WindowEvent ;
38 import java.io.File ;
39
40 import javax.swing.DefaultComboBoxModel ;
41 import javax.swing.JButton ;
42 import javax.swing.JComboBox ;
43 import javax.swing.JFileChooser ;
44 import javax.swing.JFrame ;
45 import javax.swing.JLabel ;
46 import javax.swing.JScrollPane ;
47 import javax.swing.JTextArea ;
48 import javax.swing.JTextField ;
49
50 import org.apache.commons.httpclient.HttpClient;
51 import org.apache.commons.httpclient.HttpStatus;
52 import org.apache.commons.httpclient.methods.MultipartPostMethod;
53
54
64 public class MultipartFileUploadApp {
65
66 public static void main(String [] args) {
67 MultipartFileUploadFrame f = new MultipartFileUploadFrame();
68 f.setTitle("HTTP multipart file upload application");
69 f.pack();
70 f.addWindowListener(
71 new WindowAdapter () {
72 public void windowClosing(WindowEvent e) {
73 System.exit(0);
74 }
75 }
76 );
77 f.setVisible(true);
78 }
79
80 public static class MultipartFileUploadFrame extends JFrame {
81
82 private File targetFile;
83 private JTextArea taTextResponse;
84 private DefaultComboBoxModel cmbURLModel;
85
86 public MultipartFileUploadFrame() {
87 String [] aURLs = {
88 "http://localhost:8080/httpclienttest/fileupload"
89 };
90
91 cmbURLModel = new DefaultComboBoxModel (aURLs);
92 final JComboBox cmbURL = new JComboBox (cmbURLModel);
93 cmbURL.setToolTipText("Enter a URL");
94 cmbURL.setEditable(true);
95 cmbURL.setSelectedIndex(0);
96
97 JLabel lblTargetFile = new JLabel ("Selected file:");
98
99 final JTextField tfdTargetFile = new JTextField (30);
100 tfdTargetFile.setEditable(false);
101
102 final JButton btnDoUpload = new JButton ("Upload");
103 btnDoUpload.setEnabled(false);
104
105 final JButton btnSelectFile = new JButton ("Select a file...");
106 btnSelectFile.addActionListener(
107 new ActionListener () {
108 public void actionPerformed(ActionEvent evt) {
109 JFileChooser chooser = new JFileChooser ();
110 chooser.setFileHidingEnabled(false);
111 chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
112 chooser.setMultiSelectionEnabled(false);
113 chooser.setDialogType(JFileChooser.OPEN_DIALOG);
114 chooser.setDialogTitle("Choose a file...");
115 if (
116 chooser.showOpenDialog(MultipartFileUploadFrame.this)
117 == JFileChooser.APPROVE_OPTION
118 ) {
119 targetFile = chooser.getSelectedFile();
120 tfdTargetFile.setText(targetFile.toString());
121 btnDoUpload.setEnabled(true);
122 }
123 }
124 }
125 );
126
127 taTextResponse = new JTextArea (10, 40);
128 taTextResponse.setEditable(false);
129
130 final JLabel lblURL = new JLabel ("URL:");
131
132 btnDoUpload.addActionListener(new ActionListener () {
133 public void actionPerformed(ActionEvent ae) {
134 String targetURL = cmbURL.getSelectedItem().toString();
135 if (!targetURL
137 .equals(
138 cmbURLModel.getElementAt(
139 cmbURL.getSelectedIndex()))) {
140 cmbURLModel.addElement(targetURL);
141 }
142
143 MultipartPostMethod filePost =
144 new MultipartPostMethod(targetURL);
145
146 try {
147 appendMessage("Uploading " + targetFile.getName() + " to " + targetURL);
148 filePost.addParameter(targetFile.getName(), targetFile);
149 HttpClient client = new HttpClient();
150 client.setConnectionTimeout(5000);
151 int status = client.executeMethod(filePost);
152 if (status == HttpStatus.SC_OK) {
153 appendMessage(
154 "Upload complete, response=" + filePost.getResponseBodyAsString()
155 );
156 } else {
157 appendMessage(
158 "Upload failed, response=" + HttpStatus.getStatusText(status)
159 );
160 }
161 } catch (Exception ex) {
162 appendMessage("Error: " + ex.getMessage());
163 ex.printStackTrace();
164 } finally {
165 filePost.releaseConnection();
166 }
167
168 }
169 });
170
171 getContentPane().setLayout(new GridBagLayout ());
172 GridBagConstraints c = new GridBagConstraints ();
173
174 c.anchor = GridBagConstraints.EAST;
175 c.fill = GridBagConstraints.NONE;
176 c.gridheight = 1;
177 c.gridwidth = 1;
178 c.gridx = 0;
179 c.gridy = 0;
180 c.insets = new Insets (10, 5, 5, 0);
181 c.weightx = 1;
182 c.weighty = 1;
183 getContentPane().add(lblURL, c);
184
185 c.anchor = GridBagConstraints.WEST;
186 c.fill = GridBagConstraints.HORIZONTAL;
187 c.gridwidth = 2;
188 c.gridx = 1;
189 c.insets = new Insets (5, 5, 5, 10);
190 getContentPane().add(cmbURL, c);
191
192 c.anchor = GridBagConstraints.EAST;
193 c.fill = GridBagConstraints.NONE;
194 c.insets = new Insets (10, 5, 5, 0);
195 c.gridwidth = 1;
196 c.gridx = 0;
197 c.gridy = 1;
198 getContentPane().add(lblTargetFile, c);
199
200 c.anchor = GridBagConstraints.CENTER;
201 c.fill = GridBagConstraints.HORIZONTAL;
202 c.insets = new Insets (5, 5, 5, 5);
203 c.gridwidth = 1;
204 c.gridx = 1;
205 getContentPane().add(tfdTargetFile, c);
206
207 c.anchor = GridBagConstraints.WEST;
208 c.fill = GridBagConstraints.NONE;
209 c.insets = new Insets (5, 5, 5, 10);
210 c.gridwidth = 1;
211 c.gridx = 2;
212 getContentPane().add(btnSelectFile, c);
213
214 c.anchor = GridBagConstraints.CENTER;
215 c.fill = GridBagConstraints.NONE;
216 c.insets = new Insets (10, 10, 10, 10);
217 c.gridwidth = 3;
218 c.gridx = 0;
219 c.gridy = 2;
220 getContentPane().add(btnDoUpload, c);
221
222 c.anchor = GridBagConstraints.CENTER;
223 c.fill = GridBagConstraints.BOTH;
224 c.insets = new Insets (10, 10, 10, 10);
225 c.gridwidth = 3;
226 c.gridheight = 3;
227 c.weighty = 3;
228 c.gridx = 0;
229 c.gridy = 3;
230 getContentPane().add(new JScrollPane (taTextResponse), c);
231 }
232
233 private void appendMessage(String m) {
234 taTextResponse.append(m + "\n");
235 }
236 }
237 }
238 |
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