java 如何在 Android 中将 JSON 参数作为 Web 服务请求发送？
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How to send JSON parameters as web service request in Android?
提问by Perception
Possible Duplicate:
How to send a JSON object over Request with Android?
As I am new to Android development, I struck up with a problem sending requests to a web service in the form of JSON. Googling, I found the following codefor sending requests using parameters. Here is the Java class we are sending parameters in the form of:
由于我是 Android 开发的新手，我遇到了以 JSON 形式向 Web 服务发送请求的问题。谷歌搜索，我找到了以下使用参数发送请求的代码。这是我们以以下形式发送参数的 Java 类：
Main.java
主程序
RestClient client = new RestClient(LOGIN_URL);
client.AddParam("Email", _username);
client.AddParam("Passwd", _password);
try {
client.Execute(RequestMethod.POST);
} catch (Exception e) {
e.printStackTrace();
}
String response = client.getResponse();
But here I want to send parameters in the form of JSON, like for example I want to send parameters in this form:
但在这里我想以 JSON 的形式发送参数，例如我想以这种形式发送参数：
{
"login":{
"Email":_username,
"Passwd":_password,
}
}
So, can anyone help me? How can I send parameters in the form of JSON?
那么，有人可以帮助我吗？如何以JSON的形式发送参数？
回答by Perception
The example you are posting uses a 'library' put together by someone as a wrapper around Apache's HttpClient class. It's not a particularly good one. But you don't need to use that wrapper at all, the HttpClient itself is dead simple to utilize. Here's a code sample you can build on:
您发布的示例使用由某人组合在一起的“库”作为 Apache 的 HttpClient 类的包装器。这不是一个特别好的。但是您根本不需要使用该包装器，HttpClient 本身使用起来非常简单。这是您可以构建的代码示例：
final String uri = "http://www.example.com";
final String body = String.format("{\"login\": {\"Email\": \"%s\", \"Passwd\": \"%s\"}", "[email protected]", "password");
final HttpClient client = new DefaultHttpClient();
final HttpPost postMethod = new HttpPost(uri);
postMethod.setEntity(new StringEntity(body, "utf-8"));
try {
final HttpResponse response = client.execute(postMethod);
final String responseData = EntityUtils.toString(response.getEntity(), "utf-8");
} catch(final Exception e) {
// handle exception here
}
Note that you would most likely be using a JSON library to serialize a POJO and create the request JSON.
请注意，您很可能会使用 JSON 库来序列化 POJO 并创建请求 JSON。
