D.Tech Academic: upload data to java server

UrlData.java

import java.io.BufferedReader;

import java.io.DataOutputStream;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

public class UrlData {

public static String excutePostData(String targetURL, String param)

{

URL url;

HttpURLConnection connection = null;

try {

url = new URL(targetURL);

connection = (HttpURLConnection)url.openConnection();

connection.setRequestMethod("POST");

connection.setRequestProperty("Content-Type",

"application/x-www-form-urlencoded");

connection.setRequestProperty("Content-Length", "" +

Integer.toString(urlParameters.getBytes().length));

connection.setRequestProperty("Content-Language", "en-US");

connection.setUseCaches (false);

connection.setDoInput(true);

connection.setDoOutput(true);

//Send request

DataOutputStream wr = new DataOutputStream (

connection.getOutputStream ());

wr.writeBytes (param);

wr.flush ();

wr.close ();

//Get Response

InputStream is = connection.getInputStream();

BufferedReader rd = new BufferedReader(new InputStreamReader(is));

String line;

StringBuffer response = new StringBuffer();

while((line = rd.readLine()) != null) {

response.append(line);

response.append('\r');

}

rd.close();

return response.toString();

} catch (Exception e) {

e.printStackTrace();

return null;

} finally {

if(connection != null) {

connection.disconnect();

}

* Register.java

* Created on __DATE__, __TIME__

import java.net.HttpURLConnection;

import java.net.URL;

import java.net.URLEncoder;

import javax.swing.JOptionPane;

import com.google.gson.Gson;

/**

* @author  __USER__

public class Register extends javax.swing.JFrame {

/** Creates new form Register */

public Register() {

initComponents();

}

/** This method is called from within the constructor to

* initialize the form.

* WARNING: Do NOT modify this code. The content of this method is

* always regenerated by the Form Editor.

//GEN-BEGIN:initComponents

private void initComponents() {

jLabel1 = new javax.swing.JLabel();

jTextField1 = new javax.swing.JTextField();

jButton1 = new javax.swing.JButton();

jLabel2 = new javax.swing.JLabel();

jPasswordField1 = new javax.swing.JPasswordField();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jLabel1.setText("Enter Name");

jButton1.setText("Register");

jButton1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

jButton1ActionPerformed(evt);

}

});

jLabel2.setText("Enter Pass");

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(

getContentPane());

getContentPane().setLayout(layout);

layout

.setHorizontalGroup(layout

.createParallelGroup(

javax.swing.GroupLayout.Alignment.LEADING)

.addGroup(

layout

.createSequentialGroup()

.addGap(48, 48, 48)

.addGroup(

layout

.createParallelGroup(

javax.swing.GroupLayout.Alignment.LEADING)

.addComponent(jLabel1)

.addComponent(jLabel2))

.addGap(39, 39, 39)

.addGroup(

layout

.createParallelGroup(

javax.swing.GroupLayout.Alignment.LEADING,

false)

.addComponent(

jPasswordField1)

.addComponent(jButton1)

.addComponent(

jTextField1,

javax.swing.GroupLayout.DEFAULT_SIZE,

173,

Short.MAX_VALUE))

.addContainerGap(78, Short.MAX_VALUE)));

layout

.setVerticalGroup(layout

.createParallelGroup(

javax.swing.GroupLayout.Alignment.LEADING)

.addGroup(

layout

.createSequentialGroup()

.addGap(50, 50, 50)

.addGroup(

layout

.createParallelGroup(

javax.swing.GroupLayout.Alignment.BASELINE)

.addComponent(jLabel1)

.addComponent(

jTextField1,

javax.swing.GroupLayout.PREFERRED_SIZE,

javax.swing.GroupLayout.DEFAULT_SIZE,

javax.swing.GroupLayout.PREFERRED_SIZE))

.addPreferredGap(

javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)

.addGroup(

layout

.createParallelGroup(

javax.swing.GroupLayout.Alignment.BASELINE)

.addComponent(jLabel2)

.addComponent(

jPasswordField1,

javax.swing.GroupLayout.PREFERRED_SIZE,

javax.swing.GroupLayout.DEFAULT_SIZE,

javax.swing.GroupLayout.PREFERRED_SIZE))

.addPreferredGap(

javax.swing.LayoutStyle.ComponentPlacement.RELATED,

130, Short.MAX_VALUE)

.addComponent(jButton1).addGap(40, 40,

40)));

pack();

}//

//GEN-END:initComponents

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {

try {

String urlParameters = "name=" + URLEncoder.encode(jTextField1.getText(), "UTF-8")

+ "&pass=" + URLEncoder.encode(String.valueOf(jPasswordField1.getPassword()), "UTF-8");

String resp = UrlData.excutePostData(

"http://desktop-5ii1drn:9999/BloodBankSystem/",

urlParameters);

JOptionPane.showMessageDialog(this, resp);

} catch (Exception e) {

System.out.println(e);

}

/**

* @param args the command line arguments

public static void main(String args[]) {

java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {

new Register().setVisible(true);

}

});

}

//GEN-BEGIN:variables

// Variables declaration - do not modify

private javax.swing.JButton jButton1;

private javax.swing.JLabel jLabel1;

private javax.swing.JLabel jLabel2;

private javax.swing.JPasswordField jPasswordField1;

private javax.swing.JTextField jTextField1;

// End of variables declaration//GEN-END:variables

}

index.jsp

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upload data to java server

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