我是Android Studio新手，刚开始使用Http Requests。我已经使用Oracle数据库创建了一个REST API。我一直在尝试使用Android Volley将变量从我的移动应用程序发送到数据库。我使用了不同的方法，如字符串请求和JSON对象请求，每次收到400的状态代码。
以下是我的代码：
private void sendRequest() {
RequestQueue queue = Volley.newRequestQueue(this);
String url = "http://***.**.***.***:8080/engAppApi/webservices/engineerTable/";
final JSONObject jsonObject = new JSONObject();
try {
jsonObject.put("machineType", machineType);
jsonObject.put("workOrderNumber", workOrderNumber);
jsonObject.put("employeeName", employee);
jsonObject.put("activity", activity);
jsonObject.put("durationHours", durationHours);
jsonObject.put("durationMins", durationMins);
jsonObject.put("downtimeHours", downTimeHours);
jsonObject.put("downtimeMins", downTimeMins);
jsonObject.put("details", details);
jsonObject.put("createdTimestamp", currentDateandTime);
} catch (JSONException e) {
// handle exception
}
JsonObjectRequest putRequest = new JsonObjectRequest(Request.Method.PUT, url, jsonObject,
new Response.Listener<JSONObject>()
{
@Override
public void onResponse(JSONObject response) {
// response
Log.d("Response", response.toString());
Toast.makeText(MainActivity.this, response.toString(), Toast.LENGTH_SHORT).show();
}
},
new Response.ErrorListener()
{
@Override
public void onErrorResponse(VolleyError error) {
// error
// As of f605da3 the following should work
NetworkResponse response = error.networkResponse;
if (error instanceof ServerError && response != null) {
try {
String res = new String(response.data,
HttpHeaderParser.parseCharset(response.headers, "utf-8"));
Toast.makeText(MainActivity.this, "ERROR OCCURED: " + error.toString(), Toast.LENGTH_SHORT).show();
// Now you can use any deserializer to make sense of data
} catch (UnsupportedEncodingException e1) {
// Couldn't properly decode data to string
e1.printStackTrace();
}
}
}
}
) {
@Override
public Map<String, String> getHeaders()
{
Map<String, String> headers = new HashMap<String, String>();
// headers.put("Content-Type" , "application/json");
headers.put("Content-Type", "application/json;charset=utf-8");
headers.put("securityToken", "Good Token");
return headers;
}
@Override
public byte[] getBody() {
try {
Log.i("json", jsonObject.toString());
return jsonObject.toString().getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return null;
}
@Override
public String getBodyContentType() {
return "application/json";
}
};
queue.add(putRequest);
queue.start();
}
任何人都可以看到我是否遗漏了任何内容，因为我已阅读了有关请求期望的所有文档。
非常感谢所有帮助。