关于webservice服务器接收不到Android传递过来的参数的问题

用.NET写了几个简单的接口，在Android上写了个客户端，用的KSOAP2，但发现使用Android通过WebService向服务器发送请求时，服务器接收不到Android传递的参数，通过调试发现：int类型的一直为0，String类型的一直为null。不知何故，或网络查询，或请教大牛，未果。只能换另外一种方法实现了

先是WebService，很简单的一个方法，当然还需要数据库

namespace webs{    /// <summary>    /// WebService1 的摘要说明    /// </summary>    [WebService(Namespace = "me")]    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]    //[WebServiceBinding(ConformsTo = WsiProfiles.None)]    [System.ComponentModel.ToolboxItem(false)]    // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。    public class WebService1 : System.Web.Services.WebService    {        [WebMethod]        public List<Center> GetClass(String centerCode, String StartDate)        {            string strCon = @"server=ECSHIT045;database=mydb;Trusted_Connection=yes";            SqlConnection MyCon = new SqlConnection(strCon);            MyCon.Open();            string strSQL = "select * from center where CenterCode='" + centerCode + "' and Convert(varchar,startDate,120)  like  '" + StartDate + "%'";            SqlCommand cmd = new SqlCommand(strSQL, MyCon);            SqlDataReader reader = cmd.ExecuteReader();            List<center> list = new List<center>();            while (reader.Read())            {                int ID=(Int32)reader["ID"];                String code=reader["CenterCode"].ToString();                DateTime date=(DateTime)reader["startDate"];                String name=reader["CourseName"].ToString();                          center c = new center();                c.ID1 = ID;                c.CenterCode1 = centerCode;                c.StartDate = date;                c.CourseName1 = name;                list.Add(c);            }            MyCon.Close();            return list;        }    }}

这里需要客户端传递两个参数过来

下面是要用到的一些属性

namespace webs{    public class center    {        private int ID;        private String CenterCode;        private DateTime startDate;        private String CourseName;        public int ID1        {            get { return ID; }            set { ID = value; }        }        public String CenterCode1        {            get { return CenterCode; }            set { CenterCode = value; }        }        public DateTime StartDate        {            get { return startDate; }            set { startDate = value; }        }        public String CourseName1        {            get { return CourseName; }            set { CourseName = value; }        }      }}

Android客户端
因为没有使用KSOAP2，所以发送的请求需要自己封装

 private  String getRequestStr(String centerCode,String startDate) {  StringBuilder sb = new StringBuilder();  sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>"      + "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" "      + "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" "      + "xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"      + "<soap:Body>    <GetClass xmlns=\"me\">"      + "<centerCode>" + centerCode      + "</centerCode>  <StartDate>"+startDate      +"</StartDate>  </GetClass>"      + "</soap:Body></soap:Envelope>");  return sb.toString(); }

这里需要向服务器传递两个参数
发送请求，获得响应

private static String getResponseXml(String centerCode,String startDate) throws Exception {    String soap = getRequestStr(centerCode,startDate);   if (soap == null) {    return null;   }   URL url = new URL(URL);   URLConnection conn = url.openConnection();   conn.setUseCaches(false);   conn.setDoInput(true);   conn.setDoOutput(true);   conn.setRequestProperty("Content-Length", Integer.toString(soap.length()));   conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");   conn.setRequestProperty("SOAPAction",ACTION);   OutputStream os = conn.getOutputStream();   OutputStreamWriter osw = new OutputStreamWriter(os, "utf-8");   osw.write(soap);   osw.flush();   osw.close();   BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));   StringBuilder sBuilder = new StringBuilder();   String line = "";   for (line = br.readLine(); line != null; line = br.readLine()) {   sBuilder.append(line);   System.out.println(sBuilder);   }   return sBuilder.toString(); }

解析

public static List<CenterBean> getAll(String centerCode,String startDate){    String result = null;try {result = getResponseXml(centerCode, startDate);} catch (Exception e1) {// TODO Auto-generated catch blocke1.printStackTrace();}        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();          DocumentBuilder builder = null;try {builder = factory.newDocumentBuilder();} catch (ParserConfigurationException e) {// TODO Auto-generated catch blocke.printStackTrace();}        Document document = null;try {document = builder.parse(new InputSource(new StringReader(result)));} catch (SAXException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}List<InCenterClassBean> list=new ArrayList<InCenterClassBean>();Element root=document.getDocumentElement(); NodeList nodeList=root.getElementsByTagName("center");        for (int i = 0; i < nodeList.getLength(); i++) {Element childElement1=(Element) nodeList.item(i);NodeList child=childElement1.getChildNodes();CenterBean center=new CenterBean(); for(int j = 0;j<child.getLength();j++)              {                  Node childNode = (Node)child.item(j);                  if (childNode.getNodeType()==Node.ELEMENT_NODE)                  {                  Element childElement = (Element)childNode;                      String name=childElement.getNodeName();                                        if ("ID".equals(childElement.getNodeName()))                      {                      center.setId(Integer.parseInt(childElement.getFirstChild().getNodeValue()));                    }                      else if ("CenterCode".equals(childElement.getNodeName())) {                      center.setCenterCode(childElement.getFirstChild().getNodeValue());                     }                      else if ("startDate".equals(childElement.getNodeName())) {                      center.setStartDate(childElement.getFirstChild().getNodeValue());                    }                      else if ("CourseName".equals(childElement.getNodeName())) {                      center.setCourseName(childElement.getFirstChild().getNodeValue());                    }                                                                                        } list.add(center);}        return list;    }

最后不要忘了在AndroidManifest文件中加入网络访问的权限

这里为图方便，将请求网络的事件写在主线程中了，建议大家改为多线程

THE END

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