IOS调用webService函数获取数据的相关有关问题

IOS调用webService函数获取数据的相关问题
开发一个IOS应用程序：需要调用WebService函数取得数据库中的数据：
数据查询接口函数为：String getReportMassage ( String startStatTime, String endStatTime, String operator, String password，String type);

下面是使用ASIHTTPRequest类调用WebService函数：

//生成soap消息函数getASISOAP11Request

-(NSString*)getASISOAP11Request:(NSString *) WebURL

                         webServiceFile:(NSString *) wsFile

                           xmlNameSpace:(NSString *) xmlNS

                         webServiceName:(NSString *) wsName

                           wsParameters:(NSMutableArray *) wsParas

{

    //1、初始化SOAP消息体

    NSString * soapMsgBody1 = [[NSString alloc] initWithFormat:

                               @"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"

                               "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"

                               "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"\n"

                               "xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">\n"

                               "<soap:Body>\n"

                               "<%@ xmlns=\"%@\">\n", wsName, xmlNS];

    

    NSString * soapMsgBody2 = [[NSString alloc] initWithFormat:

                               @"</%@>\n"

                               "</soap:Body>\n"

                               "</soap:Envelope>", wsName];

    

    //2、生成SOAP调用参数

    NSString * soapParas = [[NSString alloc] init];

    soapParas = @"";

    if (![wsParas isEqual:nil]) {