这是我在c＃framework 4.5中的webservice代码，用于检索数据并将其添加到json数组中。
[WebMethod(Description = "Webservice for generating category wise report in JSON form")]
public string getCategoryWiseReport(string distr)
{
string dist = "23";
distr = dist;
var con = new SqlConnection("data source=xxxx;initial catalog=xxxxx;integrated security=true");
StringBuilder JSON = new StringBuilder();
con.Open();
var cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = "RepSum";
cmd.CommandType = CommandType.StoredProcedure;
DataTable dt = new DataTable();
SqlDataAdapter ad = new SqlDataAdapter(cmd);
cmd.Parameters.AddWithValue("@dri", dri);
cmd.ExecuteNonQuery();
ad.Fill(dt);
JSON.Append("{");
JSON.Append("\"Report\":[");
for (int i = 0; i <= (dt.Rows.Count - 1); i++)
{
for (int j = 0; j <= 8; j++)
{
JSON.Append("{");
JSON.Append("\"code\":\"" + dt.Rows[i][j].ToString() + "\", ");
JSON.Append("\"desg\":\"" + dt.Rows[i][j].ToString() + "\", ");
JSON.Append("\"name\":\"" + dt.Rows[i][j].ToString() + "\", ");
JSON.Append("\"name\":\"" + dt.Rows[i][j].ToString() + "\", ");
JSON.Append("\"complaint_re\":\"" + dt.Rows[i][j].ToString() + "\", ");
JSON.Append("\"omplaint_d\":\"" + dt.Rows[i][j].ToString() + "\", ");
JSON.Append("\"complaint_pg\":\"" + dt.Rows[i][j].ToString() + "\", ");
JSON.Append("\"complaint_im\":\"" + dt.Rows[i][j].ToString() + "\", ");
JSON.Append("\"omplaint_t\":\"" + dt.Rows[i][j].ToString() + "\", ");
}
if (JSON.ToString().EndsWith(","))
{
JSON = JSON.Remove(JSON.Length - 1, 1);
}
JSON.Append("]}");
}
con.Close();
return JSON.ToString();
}
这是我的Android应用程序，当我执行这个应用程序时，它的工作基本上用来自上面的webservice的json数据填充listview。错误是
::: org.json.jsonexception: expected literal value at character 211 of {"Report" :[{
package com.example.newasynctask;
import java.util.ArrayList;
import java.util.HashMap;
import org.json.JSONArray;
import org.json.JSONObject;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.view.Menu;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class MainActivity extends ListActivity {
private ProgressDialog pDialog;
private static final String NAMESPACE="http://tempuri.org/";
private static final String URL="http://10.0.2.2:2464/WebServiceInsUpd/WebService.asmx";
private static final String SOAP_ACTION="http://tempuri.org/getCategoryWiseReport ";
private static final String METHOD_NAME="getCategoryWiseReport";
private static final String Report= "Report";
private static final String code= "code";
private static final String desg = "desg ";
private static final String name = "name ";
private static final String name = "name ";
private static final String total_comp = "total_comp ";
private static final String pg = "pg ";
private static final String ded = "ded ";
private static final String im = "inim ";
private static final String defaulter = "defaulter ";
ArrayList<HashMap<String, String>> contactList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new getContacts().execute();
}
private class getContacts extends AsyncTask<Void, Void, Void>{
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.setOutputSoapObject(request);
//enve
HttpTransportSE ht = new HttpTransportSE(URL);
try{
ht.call(SOAP_ACTION, envelope);
SoapPrimitive response;
response = (SoapPrimitive)envelope.getResponse();
final String JSON= response.toString();
JSONObject jsonObj = new JSONObject(JSON);
// Getting JSON Array node
JSONArray contacts = jsonObj.getJSONArray(Report);
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
// tmp hashmap for single contact
HashMap<String, String> contactdata = new HashMap<String, String>();
// adding each child node to HashMap key => value
contactdata.put(code, c.getString(ofc_code));
contactdata.put(desg , c.getString(ofc_desg));
contactdata.put(name , c.getString(ofc_name));
contactdata.put(name , c.getString(dep_name));
contactdata.put(comp , c.getString(total_comp));
contactdata.put(pg , c.getString(pending));
contactdata.put(dsed , c.getString(desposed));
contactdata.put(iim, c.getString(interim));
contactdata.put(defer , c.getString(defaulter ));
// adding contact to contact list
contactList.add(contactdata);
}
}
catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
if (pDialog.isShowing())
pDialog.dismiss();
/**
* Updating parsed JSON data into ListView
* */
ListView lw=(ListView)findViewById(R.id.lst);
ListAdapter adapter = new SimpleAdapter(MainActivity.this, contactList,R.layout.list_xml, new String[] { code,desg,name }, new int[] { R.id.name,R.id.email, R.id.mobile });
setListAdapter(adapter);
}
}
}
activity_main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:orientation="vertical"
>
<ListView
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:id="@android:id/list"
></ListView>
</LinearLayout>
list_xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dip"
android:paddingLeft="10dip"
android:paddingRight="10dip"
>
<TextView
android:id="@+id/name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:paddingTop="6dip"
android:textColor="#43bd00"
android:textSize="16sp"
android:textStyle="bold" />
<!-- Email label -->
<TextView
android:id="@+id/email"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:textColor="#acacac" />
<!-- Mobile number label -->
<TextView
android:id="@+id/mobile"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:text="Mobile: "
android:textColor="#5d5d5d"
android:textStyle="bold" />
</LinearLayout>