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 block
e1.printStackTrace();
}
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
try {
builder = factory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Document document = null;
try {
document = builder.parse(new InputSource(new StringReader(result)));
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.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