将数据从android应用程序传递到php文件时出错
我正在尝试使用android应用程序将参数传递到php文件。它将价格、名称和描述传递给php文件,然后php文件将其插入SQL Server数据库: 这是我的密码:将数据从android应用程序传递到php文件时出错,php,android,Php,Android,我正在尝试使用android应用程序将参数传递到php文件。它将价格、名称和描述传递给php文件,然后php文件将其插入SQL Server数据库: 这是我的密码: package com.example.androidhive; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.
package com.example.androidhive;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class NewProductActivity extends Activity {
// Progress Dialog
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
EditText inputName;
EditText inputPrice;
EditText inputDesc;
// url to create new product
private static String url_create_product = "http://127.0.0.1/android_connect/create_product.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_product);
InputStream is = new InputStream() {
@Override
public int read() throws IOException {
// TODO Auto-generated method stub
return 0;
}
};
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "utf-8"), 8);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// Edit Text
inputName = (EditText) findViewById(R.id.inputName);
inputPrice = (EditText) findViewById(R.id.inputPrice);
inputDesc = (EditText) findViewById(R.id.inputDesc);
// Create button
Button btnCreateProduct = (Button) findViewById(R.id.btnCreateProduct);
// button click event
btnCreateProduct.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// creating new product in background thread
new CreateNewProduct().execute();
}
});
}
/**
* Background Async Task to Create new product
* */
class CreateNewProduct extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(NewProductActivity.this);
pDialog.setMessage("Creating Product..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
protected String doInBackground(String... args) {
String name = inputName.getText().toString();
String price = inputPrice.getText().toString();
String description = inputDesc.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("name", name));
params.add(new BasicNameValuePair("price", price));
params.add(new BasicNameValuePair("description", description));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"POST", params);
// check log cat fro response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
Intent i = new Intent(getApplicationContext(), AllProductsActivity.class);
startActivity(i);
// closing this screen
finish();
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}
}
}
package com.example.androidhive;
导入java.io.BufferedReader;
导入java.io.IOException;
导入java.io.InputStream;
导入java.io.InputStreamReader;
导入java.io.UnsupportedEncodingException;
导入java.util.ArrayList;
导入java.util.List;
导入org.apache.http.NameValuePair;
导入org.apache.http.message.BasicNameValuePair;
导入org.json.JSONException;
导入org.json.JSONObject;
导入android.app.Activity;
导入android.app.ProgressDialog;
导入android.content.Intent;
导入android.os.AsyncTask;
导入android.os.Bundle;
导入android.util.Log;
导入android.view.view;
导入android.widget.Button;
导入android.widget.EditText;
公共类NewProductActivity扩展了活动{
//进度对话框
私人对话;
JSONParser JSONParser=新的JSONParser();
编辑文本输入名;
编辑文本输入价格;
编辑文本输入描述;
//创建新产品的url
私有静态字符串url\u创建\u产品=”http://127.0.0.1/android_connect/create_product.php";
//JSON节点名称
私有静态最终字符串标记_SUCCESS=“SUCCESS”;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.add_产品);
InputStream is=新的InputStream(){
@凌驾
public int read()引发IOException{
//TODO自动生成的方法存根
返回0;
}
};
试一试{
BufferedReader reader=新的BufferedReader(新的InputStreamReader(is,“utf-8”),8;
}捕获(不支持的编码异常e){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
//编辑文本
inputName=(EditText)findViewById(R.id.inputName);
inputPrice=(EditText)findViewById(R.id.inputPrice);
inputDesc=(EditText)findViewById(R.id.inputDesc);
//创建按钮
按钮btnCreateProduct=(按钮)findViewById(R.id.btnCreateProduct);
//按钮点击事件
btnCreateProduct.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
//在后台线程中创建新产品
新建CreateNewProduct().execute();
}
});
}
/**
*创建新产品的后台异步任务
* */
类CreateNewProduct扩展了AsyncTask{
/**
*在启动后台线程显示进度对话框之前
* */
@凌驾
受保护的void onPreExecute(){
super.onPreExecute();
pDialog=newprogressdialog(NewProductActivity.this);
pDialog.setMessage(“创建产品…”);
pDialog.setUndeterminate(假);
pDialog.setCancelable(真);
pDialog.show();
}
/**
*创造产品
* */
受保护的字符串doInBackground(字符串…args){
字符串名称=inputName.getText().toString();
字符串价格=inputPrice.getText().toString();
字符串描述=inputDesc.getText().toString();
//建筑参数
List params=new ArrayList();
参数添加(新的BasicNameValuePair(“名称”),名称);
参数添加(新的BasicNameValuePair(“价格”,价格));
参数添加(新的BasicNameValuePair(“说明”,说明));
//获取JSON对象
//请注意,创建产品url接受POST方法
JSONObject json=jsonParser.makeHttpRequest(url\u create\u product,
“POST”,params);
//检查cat fro响应日志
d(“创建响应”,json.toString());
//检查成功标签
试一试{
int success=json.getInt(TAG_success);
如果(成功==1){
//已成功创建产品
Intent i=新Intent(getApplicationContext(),AllProductsActivity.class);
星触觉(i);
//关闭此屏幕
完成();
}否则{
//未能创建产品
}
}捕获(JSONException e){
e、 printStackTrace();
}
返回null;
}
/**
*完成后台任务后,关闭“进度”对话框
* **/
受保护的void onPostExecute(字符串文件\u url){
//完成后关闭对话框
pDialog.disclose();
}
}
}
我在logcat文件中发现如下错误:
E/JSON Parser(371): Error parsing data org.json.JSONException: Value Unknown of type java.lang.String cannot be converted to JSONObject
E/AndroidRuntime(371): FATAL EXCEPTION: AsyncTask #1
E/AndroidRuntime(371): java.lang.RuntimeException: An error occured while executing doInBackground()
E/AndroidRuntime(371): at android.os.AsyncTask$3.done(AsyncTask.java:200)
E/AndroidRuntime(371): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274)
E/AndroidRuntime(371): at java.util.concurrent.FutureTask.setException(FutureTask.java:125)
E/AndroidRuntime(371): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308)
E/AndroidRuntime(371): at java.util.concurrent.FutureTask.run(FutureTask.java:138)
E/AndroidRuntime(371): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
E/AndroidRuntime(371): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
E/AndroidRuntime(371): at java.lang.Thread.run(Thread.java:1019)
E/AndroidRuntime(371): Caused by: java.lang.NullPointerException
E/AndroidRuntime(371): at com.example.androidhive.NewProductActivity$CreateNewProduct.doInBackground(NewProductActivity.java:99)
E/AndroidRuntime(371): at com.example.androidhive.NewProductActivity$CreateNewProduct.doInBackground(NewProductActivity.java:1)
E/AndroidRuntime(371): at android.os.AsyncTask$2.call(AsyncTask.java:185)
E/AndroidRuntime(371): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
E/AndroidRuntime(371): ... 4 more
E/WindowManager(371): Activity com.example.androidhive.NewProductActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@40539530 that was originally added here
E/WindowManager(371): android.view.WindowLeaked: Activity com.example.androidhive.NewProductActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@40539530 that was originally added here
E/WindowManager(371): at android.view.ViewRoot.<init>(ViewRoot.java:258)
E/WindowManager(371): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
E/WindowManager(371): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
E/WindowManager(371): at android.view.Window$LocalWindowManager.addView(Window.java:424)
E/WindowManager(371): at android.app.Dialog.show(Dialog.java:241)
E/WindowManager(371): at com.example.androidhive.NewProductActivity$CreateNewProduct.onPreExecute(NewProductActivity.java:76)
E/WindowManager(371): at android.os.AsyncTask.execute(AsyncTask.java:391)
E/WindowManager(371): at com.example.androidhive.NewProductActivity$1.onClick(NewProductActivity.java:56)
E/WindowManager(371): at android.view.View.performClick(View.java:2485)
E/WindowManager(371): at android.view.View$PerformClick.run(View.java:9080)
E/WindowManager(371): at android.os.Handler.handleCallback(Handler.java:587)
E/WindowManager(371): at android.os.Handler.dispatchMessage(Handler.java:92)
E/WindowManager(371): at android.os.Looper.loop(Looper.java:123)
E/WindowManager(371): at android.app.ActivityThread.main(ActivityThread.java:3683)
E/WindowManager(371): at java.lang.reflect.Method.invokeNative(Native Method)
E/WindowManager(371): at java.lang.reflect.Method.invoke(Method.java:507)
E/WindowManager(371): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
E/WindowManager(371): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
E/WindowManager(371): at dalvik.system.NativeStart.main(Native Method)
E/JSON解析器(371):解析数据org.JSON.JSONException时出错:java.lang.String类型的未知值无法转换为JSONObject
E/AndroidRuntime(371):致命异常:异步任务#1
E/AndroidRuntime(371):java.lang.RuntimeException:执行doInBackground()时出错
E/AndroidRuntime(371):位于android.os.AsyncTask$3.done(AsyncTask.java:200)
E/AndroidRuntime(371):位于java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274)
E/AndroidRuntime(371):位于java.util.concurrent.FutureTask.setException(FutureTask.java:125)
E/AndroidRuntime(371):位于java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308)
E/AndroidRuntime(371):位于java.util.concurrent.FutureTask.run(FutureTask.java:138)
E/AndroidRuntime(371):位于java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
E/AndroidRuntime(371):位于java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
E/AndroidRuntime(371):位于java.lang.Thread.run(Thread.java:1019)
E/AndroidRuntime(37)
String url = "http://127.0.0.1/android_connect/create_product.php";
URL obj = new URL(url);
HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
//add request header
con.setRequestMethod("POST");
con.setRequestProperty("User-Agent", USER_AGENT);
con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
String urlParameters = "name=abc&price=2345&description=description";
// Send post request
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
int responseCode = con.getResponseCode();
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
//print result
System.out.println(response.toString());
E/JSON Parser(371): Error parsing data org.json.JSONException: Value Unknown of type java.lang.String cannot be converted to JSONObject
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"POST", params);
String response = jsonParser.makeHttpRequest(url_create_product,
"POST", params);
JSONObject json = new JSONObject(response);