需要支持的JAR包：
httpclient-4.2.5，httpcore-4.3
1、Android/java：
JSONObject jsonObj = new JSONObject();
jsonObj.put(“userName “, userName);
jsonObj.put(“passWord”, passWord);
// Create the POST object and add the parameters
HttpPost httpPost = new HttpPost(url);
StringEntity entity = new StringEntity(jsonObj.toString(), “UTF-8”);
entity.setContentType(“application/json”);
httpPost.setEntity(entity);
HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(httpPost);
2、用jQuery：
var data = {};
data.userName = “zhangsan”;
data.passWord= “12345”;
var myData=$.toJSON(data);
$.ajax({
url:url,
type:”POST”,
data:myData,
contentType:”application/json; charset=utf-8″,
dataType:”json”,
success: function(){
…
}
})