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httpGet

function httpGet(sURL) {

var oURL = new java.net.URL(sURL);

//...

}

Note that when you use LiveConnect, you must furnish the complete name of the class, including the

package, to instantiate a Java object. After the URL is created, you open up an input stream and create a

reader to get the data back. The preferred way to do this is to create an

InputStreamReader

and then a

BufferedReader

based on it:

function httpGet(sURL) {

var oURL = new java.net.URL(sURL);

var oStream = oURL.openStream();

var oReader = new java.io.BufferedReader(new

java.io.InputStreamReader(oStream));

//...

}

With the buffered reader created, all that’s left to do is read the data back from the server. A buffered

reader gets data line-by-line, so you create a variable to build up the response into the full text. This

response text variable (named

sResponseText

) must start out as an empty string, not null, so that

string concatenation can be used to build the result:

function httpGet(sURL) {

var oURL = new java.net.URL(sURL);

var oStream = oURL.openStream();

var oReader = new java.io.BufferedReader(new

java.io.InputStreamReader(oStream));

var sResponseText = “”;

var sLine = oReader.readLine();

while (sLine != null) {

sResponseText += sLine + “\n”;

sLine = oReader.readLine();

}

//...

}

Because the buffered reader returns lines, each line must be appended with a new line character to

ensure that it remains in the same form, as it should. The last steps are to close the reader and return

the response text:

function httpGet(sURL) {

var oURL = new java.net.URL(sURL);

var oStream = oURL.openStream();

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Client-Server Communication

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