Php 从服务器发送字符串响应时,无法将java.lang.Integer转换为JSONObject
我通过genAsync库从android应用程序向服务器发送数据。在服务器上,我同时插入并检查用户是否已存在。如果用户已存在,则我发送json_编码数组;如果用户不存在,则发送用户已成功插入的im消息,但当im向应用程序发送消息时,会出现一个错误,即java.lang.Integer无法删除已转换为JSONObjectPhp 从服务器发送字符串响应时,无法将java.lang.Integer转换为JSONObject,php,android,codeigniter,Php,Android,Codeigniter,我通过genAsync库从android应用程序向服务器发送数据。在服务器上,我同时插入并检查用户是否已存在。如果用户已存在,则我发送json_编码数组;如果用户不存在,则发送用户已成功插入的im消息,但当im向应用程序发送消息时,会出现一个错误,即java.lang.Integer无法删除已转换为JSONObject 01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: org.json.JSONExce
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: org.json.JSONException: Value 1 of type java.lang.Integer cannot be converted to JSONObject
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at org.json.JSON.typeMismatch(JSON.java:111)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at org.json.JSONObject.<init>(JSONObject.java:160)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at org.json.JSONObject.<init>(JSONObject.java:173)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at com.example.ali.ansofexperts.UserLogin$4$1.processFinish(UserLogin.java:121)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at com.kosalgeek.asynctask.PostResponseAsyncTask.onPostExecute(PostResponseAsyncTask.java:248)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at com.kosalgeek.asynctask.PostResponseAsyncTask.onPostExecute(PostResponseAsyncTask.java:31)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.AsyncTask.finish(AsyncTask.java:667)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.AsyncTask.-wrap1(AsyncTask.java)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:684)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.Looper.loop(Looper.java:154)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.app.ActivityThread.main(ActivityThread.java:6121)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at java.lang.reflect.Method.invoke(Native Method)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
我附加的php代码,android代码和错误日志也
php代码
class Users extends CI_Controller
{
public function create(){
$data=$this->check_exist($this->input->post('user_id'));
if($data=='0')
{
$this->load->model('UsersModel');
$msg = $this->UsersModel->create();
if ($msg==true) {
echo 'user inserted successfully';
} else {
echo '0';
}
}
else{
$data["user_details"]=$data;
echo json_encode($data);
}
}
public function check_exist($user_id)
{
$this->load->helper('url');
$this->load->model('UsersModel');
$data=$this->UsersModel->user_exist($user_id);
if(!empty($data))
{
return($data);
}
else
{
return '0';
}
}
}
try {
final Database_Helper dg = new Database_Helper(getBaseContext());
ServerUrl obj =new ServerUrl();
HashMap postData = new HashMap();
postData.put("user_id",personId);
postData.put("user_name",personName);
postData.put("email",personEmail);
postData.put("profile_picture",String.valueOf(personPhoto));
final PostResponseAsyncTask readTask = new PostResponseAsyncTask(UserLogin.this, postData, new AsyncResponse()
{
public void processFinish(String mStringArray)
{
Log.d("data", mStringArray);
if(mStringArray.equals("0"))
{
Toast.makeText(UserLogin.this, "Invalid login try again", Toast.LENGTH_LONG).show();
}
else
{
try {
JSONObject json = null;
json = new JSONObject(mStringArray);
JSONArray jsonscoresarray = json.getJSONArray("user_details");
final JSONObject details = jsonscoresarray.getJSONObject(0);
if (mStringArray.equals("0"))
{
Toast.makeText(UserLogin.this, "At if", Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(UserLogin.this, "At else", Toast.LENGTH_LONG).show();
}
Toast.makeText(UserLogin.this, "Login Success", Toast.LENGTH_LONG).show();
}
catch (JSONException e)
{
e.printStackTrace();
}
}
}
});
obj.url("Users","create");
readTask.execute(obj.domain_url);
}
catch (Exception ex)
{
Toast.makeText(UserLogin.this, ex.getMessage().toString(), Toast.LENGTH_SHORT).show();
}
用于向服务器端发送数据的android代码
try {
final Database_Helper dg = new Database_Helper(getBaseContext());
ServerUrl obj =new ServerUrl();
HashMap postData = new HashMap();
postData.put("user_id",personId);
postData.put("user_name",personName);
postData.put("email",personEmail);
postData.put("profile_picture",String.valueOf(personPhoto));
final PostResponseAsyncTask readTask = new PostResponseAsyncTask(UserLogin.this, postData, new AsyncResponse()
{
public void processFinish(String mStringArray)
{
Log.w("data", mStringArray.toString());
try {
JSONObject json= null;
json = new JSONObject(mStringArray);
JSONArray jsonscoresarray=json.getJSONArray("user_details");
final JSONObject details = jsonscoresarray.getJSONObject(0);
if (jsonscoresarray.length() == 0)
{
//storing data to sqlite if user not exist
dg.user_Putrecord(dg, personId, personName, personEmail, String.valueOf(personPhoto));
}
else
{
//storing data to sqlite if user exist
dg.user_Putrecord(dg,details.getString("auth_id"),details.getString("full_name"),details.getString("email_id"),details.getString("profile_url"));
}
} catch (JSONException e) {
e.printStackTrace();
}
Toast.makeText(UserLogin.this, mStringArray.toString(), Toast.LENGTH_LONG).show();
}
});
obj.url("Users","create");
readTask.execute(obj.domain_url);
}
catch (Exception ex)
{
Toast.makeText(UserLogin.this, ex.getMessage().toString(), Toast.LENGTH_SHORT).show();
}
这是我的错误日志
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: org.json.JSONException: Value 1 of type java.lang.Integer cannot be converted to JSONObject
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at org.json.JSON.typeMismatch(JSON.java:111)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at org.json.JSONObject.<init>(JSONObject.java:160)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at org.json.JSONObject.<init>(JSONObject.java:173)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at com.example.ali.ansofexperts.UserLogin$4$1.processFinish(UserLogin.java:121)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at com.kosalgeek.asynctask.PostResponseAsyncTask.onPostExecute(PostResponseAsyncTask.java:248)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err: at com.kosalgeek.asynctask.PostResponseAsyncTask.onPostExecute(PostResponseAsyncTask.java:31)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.AsyncTask.finish(AsyncTask.java:667)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.AsyncTask.-wrap1(AsyncTask.java)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:684)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.os.Looper.loop(Looper.java:154)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at android.app.ActivityThread.main(ActivityThread.java:6121)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at java.lang.reflect.Method.invoke(Native Method)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err:org.json.JSONException:java.lang.Integer类型的值1无法转换为JSONObject
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err:at org.json.json.typeMismatch(json.java:111)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err:at org.json.JSONObject.(JSONObject.java:160)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err:at org.json.JSONObject.(JSONObject.java:173)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err:at com.example.ali.ansofexperts.UserLogin$4$1.processFinish(UserLogin.java:121)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err:at com.kosalgeek.asynctask.asynctask.onPostExecute(PostResponseAsyncTask.java:248)
01-29 13:49:33.765 4455-4455/com.example.ali.ansofexperts W/System.err:at com.kosalgeek.asynctask.asynctask.onPostExecute(PostResponseAsyncTask.java:31)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at android.os.AsyncTask.finish(AsyncTask.java:667)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at android.os.AsyncTask.-wrap1(AsyncTask.java)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:684)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at android.os.Handler.dispatchMessage(Handler.java:102)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at android.os.Looper.loop(Looper.java:154)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at-android.app.ActivityThread.main(ActivityThread.java:6121)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at java.lang.reflect.Method.invoke(本机方法)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
01-29 13:49:33.766 4455-4455/com.example.ali.ansofexperts W/System.err:at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
我只是想知道,当从服务器发送字符串响应时,如何处理此异常。如果用户不存在,则您的方法将返回整数
0
。然后您将尝试向其添加数组索引
尝试将结果和数据数组分开,如下所示:
$exists = $this->check_exist($this->input->post('user_id'));
$result = [];
if(!$exists) {
// code from above
} else {
$result["user_details"]=$data;
echo json_encode($result);
}
对整数应用数组索引仍应引发警告:
您可能无法使用
key=“user\u details”
在使用前进行密钥检查,如:
if(json.has("user_details")) {
JSONArray jsonscoresarray=json.getJSONArray("user_details");
... other code here ...
} else {
Toast.makeText(UserLogin.this, json.toString(), Toast.LENGTH_LONG).show();
}
编辑:
问题已经到了关键时刻
json = new JSONObject(mStringArray);
,可能您得到的响应是0
,因为它不是任何jsonObject,所以您得到的异常是无法将Integer转换为jsonObject
使用以下代码检查它是否为有效的json,然后进行相应的处理:
public boolean isJSONValid(String myString) {
try {
new JSONObject(myString);
} catch (JSONException ex) {
// e.g. in case JSONArray is valid as well...
try {
new JSONArray(myString);
} catch (JSONException ex1) {
return false;
}
}
return true;
}
现在在您的代码中使用:
if(isValidJson(mStringArray)) {
JSONObject json = new JSONObject(mStringArray);
JSONArray jsonscoresarray=json.getJSONArray("user_details");
... other code here ...
} else {
// Response Not Json
Toast.makeText(UserLogin.this, json.toString(), Toast.LENGTH_LONG).show();
}
我为初学者发布完整答案 我在下面写的时候,您的php代码中有一些小的变化
public function create(){
$this->load->model('UsersModel');
$data=$this->UsersModel->check_exist($this->input->post('user_id'));
if($data==0){
$nData=$this->UsersModel->create();
if($nData!="0"){
$data=$this->UsersModel->check_exist($this->input->post('user_id'));
echo json_encode($data);
}else{
die("0");
}
}else{
$result["user_details"]=$data;
echo json_encode($result);
}
}
正如您所看到的,我刚刚从控制器中删除了check_exist函数。因为
控制器中不需要此功能
所以我直接从模型中调用它,以减少代码行的数量
现在android端编码发生了变化
class Users extends CI_Controller
{
public function create(){
$data=$this->check_exist($this->input->post('user_id'));
if($data=='0')
{
$this->load->model('UsersModel');
$msg = $this->UsersModel->create();
if ($msg==true) {
echo 'user inserted successfully';
} else {
echo '0';
}
}
else{
$data["user_details"]=$data;
echo json_encode($data);
}
}
public function check_exist($user_id)
{
$this->load->helper('url');
$this->load->model('UsersModel');
$data=$this->UsersModel->user_exist($user_id);
if(!empty($data))
{
return($data);
}
else
{
return '0';
}
}
}
try {
final Database_Helper dg = new Database_Helper(getBaseContext());
ServerUrl obj =new ServerUrl();
HashMap postData = new HashMap();
postData.put("user_id",personId);
postData.put("user_name",personName);
postData.put("email",personEmail);
postData.put("profile_picture",String.valueOf(personPhoto));
final PostResponseAsyncTask readTask = new PostResponseAsyncTask(UserLogin.this, postData, new AsyncResponse()
{
public void processFinish(String mStringArray)
{
Log.d("data", mStringArray);
if(mStringArray.equals("0"))
{
Toast.makeText(UserLogin.this, "Invalid login try again", Toast.LENGTH_LONG).show();
}
else
{
try {
JSONObject json = null;
json = new JSONObject(mStringArray);
JSONArray jsonscoresarray = json.getJSONArray("user_details");
final JSONObject details = jsonscoresarray.getJSONObject(0);
if (mStringArray.equals("0"))
{
Toast.makeText(UserLogin.this, "At if", Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(UserLogin.this, "At else", Toast.LENGTH_LONG).show();
}
Toast.makeText(UserLogin.this, "Login Success", Toast.LENGTH_LONG).show();
}
catch (JSONException e)
{
e.printStackTrace();
}
}
}
});
obj.url("Users","create");
readTask.execute(obj.domain_url);
}
catch (Exception ex)
{
Toast.makeText(UserLogin.this, ex.getMessage().toString(), Toast.LENGTH_SHORT).show();
}
希望这会对您有所帮助。您在哪一行出现此错误?请共享您的POJO类。@VladMatvienko JSONArray jsonscoresarray=json.getJSONArray(“用户详细信息”);当服务器发送字符串响应时,很可能是错误的。那一行没有关于
JSONObject
的内容。确保它不是上面的一行,也不是下面的一行。@VladMatvienko但我的错误logcat在该行上显示错误您在以下位置收到的值:Log.w(“数据”,mStringArray.toString())
当用户存在时返回Json数组,当用户不存在时返回1您需要检查响应是否为Json
。检查我的最新答案。