httpclient发送json后台接收到不是json格式

发送的json：{"abel":"6","act":"get","attrib":"5","did":"1","pid":"2","srv":"4","tpid":"3"}
数据发送的代码：
StringEntity entity = new StringEntity(json);
entity.setContentType("application/json");
entity.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/x-www-form-urlencoded"));
// entity.setContentEncoding("UTF-8");
httppost.setEntity(entity);

接收到的数据格式：调用函数request.getParameterMap()
{{"abel":"6","act":"get","attrib":"5","did":"1","pid":"2","srv":"4","tpid":"3"}=[Ljava.lang.String;@5abf00}

期望得到的数据格式：
{"did":["1"],"pid":["2"],"tpid":["3"],"srv":["4"],"act":["get"],"attrib":["5"],"abel":["6"]}

发送的json1、2、3、4、5、6的key改成数组类型

让后台给你修改，格式是后台生成的