这是我为JsonArrayRequest编写的代码，我认为它要么不完整，要么不正确。问题是没有任何东西被添加到数据库中，我没有收到任何错误。我是编程新手，所以我不知道哪里可能出错。
private void insertToDb() {
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Request.Method.POST, INVEST_URL,
itemSelectedJson, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Toast.makeText(AddInvEst.this, "The echoed response is "+response, Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
}){
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String,String> headers = new HashMap<String, String>();
headers.put("Content-Type","application/json");
headers.put("Accept", "application/json");
return headers;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(jsonArrayRequest);
}
这是用于创建jsonArray 的代码
private void selectedItems() {
billType = (invEstSwitch.isChecked() ? textViewEstimate : textViewInvoice)
.getText().toString();
itemselected.put("custInfo", custSelected.toString());
itemselected.put("invoiceNo", textViewInvNo.getText().toString());
itemselected.put("barcode", barCode.getText().toString());
itemselected.put("desc", itemDesc.getText().toString());
itemselected.put("weight", weightLine.getText().toString());
itemselected.put("rate", rateAmount.getText().toString());
itemselected.put("makingAmt", makingAmount.getText().toString());
itemselected.put("net_rate", netRate.getText().toString());
itemselected.put("itemTotal", itemtotal.getText().toString());
itemselected.put("vat", textViewVat.getText().toString());
itemselected.put("sum_total", textViewSum.getText().toString());
itemselected.put("bill_type", billType);
itemselected.put("date", textViewCurrentDate.getText().toString());
//Add the map to the Array
itemSelectedJson.put(itemselected);
index++;
}
这是我的php代码。
<?php
require "init.php";
$json = file_get_contents('php://input');
//$data = json_decode($json,true);
// remove the ,true so the data is not all converted to arrays
$data = json_decode($json);
// Now process the array of objects
foreach ( $data as $inv ) {
$custInfo = $inv->custInfo;
$rate = $inv->rate;
$weight= $inv->weight;
$desc= $inv->desc;
$makingAmt= $inv->makingAmt;
$vat= $inv->vat;
$itemTotal= $inv->itemTotal;
$sum_total= $inv->sum_total;
$barcode= $inv->barcode;
$net_rate= $inv->net_rate;
$date= $inv->date;
$invoiceNo= $inv->invoiceNo;
$bill_type= $inv->bill_type;
$sql = "INSERT INTO selected_items
(custInfo, invoiceNo, barcode, desc,
weight, rate, makingAmt,net_rate,
itemTotal,vat,sum_total,bill_type,date)
VALUES
('$custInfo','$invoiceNo','$barcode','$desc',
'$weight','$rate','$makingAmt','$net_rate',
'$itemTotal','$vat','$sum_total','$bill_type','$date')";
$res = mysql_query($sql,$con);
if(!$res){
$result = new stdClass();
$result->status = false;
$result->msg = mysql_error();
echo json_encode($result);
exit;
}
}
?>
您错过了在post请求中添加方法getParams（），它应该具有以下结构
StringRequest stringRequest = new StringRequest(Request.Method.POST, "url",
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
errorHandler(error);
}
}){
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> params = new HashMap<>();
//Adding parameters to request
params.put("KEY1", key1);
params.put("KEY2", key2);
//returning parameter
return params;
}
};
//Adding the string request to the queue
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}