gwt与php混合使用～

注意的有几点，hosted模式下RequestBuilder读取server的json有问题，用本地文件代替即可。
Zend_Json默认输出的json数据不能被读取，必须加[和]...
echo "[";
echo Zend_Json::encode($myconfig);
echo "]"; 
简单读取json的例子:
package com.esbrain.client;
import com.esbrain.shared.FieldVerifier;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.Window;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.Response;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.URL;
import com.google.gwt.json.client.*;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class mygwt implements EntryPoint {
String MY_URL = "http://feeds.feedburner.com/jandan?format=xml";
final private Button btn = new Button();

private static final RequestBuilder reqBuilder = new RequestBuilder(
RequestBuilder.GET ,
"/my.json"
//"http://localhost/ecshop/public/rdcfg/base"
);
private class SendButtonHandler implements ClickHandler{
public void onClick(ClickEvent ce){
try{