GWT（客户端）=如何将对象转换为JSON并发送到服务器？ [英] GWT (Client) = How to convert Object to JSON and send to Server?

问题描述

我知道GWT有很好的RPC支持。但为了各种目的，我需要自己构建它：

1。）如何将Bean对象（在客户端）转换为像

  class MyPerson {
 
字符串名称; 
 String getName（）; 
 void setName（String name）; 
 // .. 
} 
  

与GWT合并为一个JSON字符串？ （理想情况下，只使用来自GWT / Google的正式库）。其次，我怎样才能将这个生成的JSON字符串从客户端发送到任何服务器使用任何GWT客户端Logik。 （理想情况下，只使用来自GWT / Google的正式库）。

我搜索了很多，但这些示例从未展示如何发送数据，但仅接收JSON数据。

非常感谢！
Jens

解决方案

GWT将为您创建一个称为AutoBeanFactory的漂亮类，不需要任何第三方库。请参阅 http://google-web-toolkit.googlecode.com/svn-history/r9219/javadoc/2.1/com/google/gwt/editor/client/AutoBeanFactory.html

获得AutoBeanFactory后，您可以像这样使用它：

从SimpleInterface类型的对象生成JSON

  AutoBean< SimpleInterface> bean = beanFactory.create（SimpleInterface.class，simpleInterfaceInstance）; 
 String requestData = AutoBeanCodex.encode（bean）.getPayload（）; 
 
 useRequestBuilderToSendRequestWhereverYouWant（requestData）; 
  

从SimpleInterface类型的对象解析JSON

  SimpleInterface simpleInterfaceInstance = AutoBeanCodex.decode（beanFactory，SimpleInterface.class，responseText）.as（）; 
  

您可以使用 RequestBuilder 发送这些请求没有GWT-RPC或RF的东西。

I know that GWT has a good RPC support. But for various purposes I need to build this on my own:

1.) How can I convert a Bean Object (on the Client Side) like;

class MyPerson {

String name;
String getName();
void setName(String name);
//..    
}

with GWT into a JSON String? (Ideally only using libraries that come officially from GWT/Google).

2.) Secondly, how can I send this generated JSON String from the Client side to any Server also using any GWT Client Logik. (Ideally only using libraries that come officially from GWT/Google).

I have searched a lot, but the examples never show how to send data but only to receive JSON data.

Thank you very much!!! Jens

解决方案

There's a nifty class called AutoBeanFactory that GWT will create for you, no third-party libs required. See http://google-web-toolkit.googlecode.com/svn-history/r9219/javadoc/2.1/com/google/gwt/editor/client/AutoBeanFactory.html

Once you have your AutoBeanFactory, you can use it like this:

producing JSON from an object of type SimpleInterface

AutoBean<SimpleInterface> bean = beanFactory.create(SimpleInterface.class, simpleInterfaceInstance);
String requestData = AutoBeanCodex.encode(bean).getPayload();

useRequestBuilderToSendRequestWhereverYouWant(requestData);

parsing JSON from an object of type SimpleInterface

SimpleInterface simpleInterfaceInstance = AutoBeanCodex.decode(beanFactory, SimpleInterface.class, responseText).as();

You can use RequestBuilder to send these requests without GWT-RPC or the RF stuff.

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