如何POST一个JSON格式的数据给Restful服务

在Android/java平台上实现POST一个json数据：

JSONObject jsonObj = new JSONObject();
jsonObj.put("username", username);
jsonObj.put("apikey", apikey);
// Create the POST object and add the parameters
HttpPost httpPost = new HttpPost(url);
StringEntity entity = new StringEntity(jsonObj.toString(), HTTP.UTF_8);
entity.setContentType("application/json");
httpPost.setEntity(entity);
HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(httpPost);

用curl可执行如下命令：

curl -l -H "Content-type: application/json" -X POST -d '{"phone":"13521389587","password":"test"}'

用jQuery：

$.ajax({
url:url,
type:"POST",
data:data,
contentType:"application/json; charset=utf-8",
dataType:"json",
success: function(){
...
}
})
PHP用cUrl实现：

$data = array("name" => "Hagrid", "age" => "36");
$data_string = json_encode($data);
$ch = curl_init(');
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Content-Length: ' . strlen($data_string))
);
$result = curl_exec($ch);

首先，必须在服务器端的方法上标记HttpPost，然后在前端使用$.ajax(serverurl,
{
dataType: "json",
contentType: "application/json",
async: async,//async可选值是true 或者false，可选配置
cache: false,--可选配置
type: 'Post',
data:JSON.stringify(data)//data 表示你要发送到服务器端的数据
}
);

注：--serverurl要定位到对应的方法,

这类也不难。