iOS端实现思路：

iOS端既然要传json格式的数据，必然会封装成OC字典。熟悉json格式的人都知道，json的大括号就是对应OC字典，而json的小括号对应OC的数组。

第一步，iOS端肯定要把所有要传的值全部封装成OC字典的格式。

以上三步，说白了就是把要传输的值转成NSString类型来传。那么，java服务器自然就是字符串的形式来接收即可。

iOS端参考代码：

NSDictionary *jsonDict = @{@"stallInfo":@[                                       @{@"stallName":stallName,@"shopOneName":shopOneName,@"shopOneDes":shopOneDes,@"shopTwoName":shopTwoName,@"shopTwoDes":shopTwoDes}],                               @"longtitude":longtitude,                               @"latitude":latitude                               };    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDict options:NSJSONWritingPrettyPrinted error:nil];    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];    [PublicAPI requestForPitchParam:jsonString callback:^(id obj) {    }];

+(void)requestForPitchParam:(id)param callback:(ZFCallBack)callback{    NSString *path = @"http://192.168.1.101:8080/MoveStall/pitch";    NSMutableURLRequest *request = [PublicAPI setupURLRequestAndPath:path param:param requestMethod:@"POST"];    [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];    [PublicAPI httpSession:request success:^(id responseOjb) {        callback(responseOjb);    } failure:^(NSError *error) {        callback(error.localizedDescription);    }];}

+(NSMutableURLRequest *)setupURLRequestAndPath:(NSString *)path param:(id)param requestMethod:(NSString *)requestMethod{    path = [path stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];    NSURL *url = [NSURL URLWithString:path];    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];    request.HTTPBody = [param dataUsingEncoding:NSUTF8StringEncoding];    request.timeoutInterval = 30;    request.HTTPMethod = requestMethod;    return request;}

+(void)httpSession:(NSMutableURLRequest *)urlRequest success:(void(^)(id responseOjb))success failure:(void(^)(NSError *))failure{    NSURLSession *session = [NSURLSession sharedSession];    [[session dataTaskWithRequest:urlRequest completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {        if (error) {            failure(error);        }        else        {            NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];            success(dict);        }    }] resume];}

Java服务器实现思路:

上面，已经阐述过了iOS端实际是发送字符串，那么Java服务器以接受字符串的方式来接收即可。而在这里，Java服务器采用servlet来编写。

Java服务器参考代码：

/**    * 获取请求的 body    * @param req    * @return    * @throws IOException    */    public static String getRequestBody(HttpServletRequest req) throws IOException {    BufferedReader reader = req.getReader();    String input = null;    StringBuffer requestBody = new StringBuffer();    while((input = reader.readLine()) != null) {    requestBody.append(input);    }    return requestBody.toString();    }

/**     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)     */    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        // TODO Auto-generated method stub        response.setContentType("text/html");        response.setCharacterEncoding("utf-8");         String jsonString = getRequestBody(request);         System.out.println(jsonString);         JSONObject jsonObj = JSONObject.fromObject(jsonString);         System.out.println(jsonObj);    }

Java服务器接收到Json格式数据后，可以通过JsonObject、JsonArray类来转化，方便取出里面的值。这里就不再赘述，读者可自行百度。