安卓值上传数据库使用JSON [英] android values upload database with json
本文介绍了安卓值上传数据库使用JSON的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我创建MAGNETIC_FIELD传感器。这code给x和yž事件值，ArithmeticAvg和SQRTx ^ 2 + Y ^ 2 + Z ^ 2
我要上传数据库中的这些值。如何上传数据库，这些值与JSON或别的东西。在这里我的code
公共类MainActivity扩展ActionBarActivity {@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
//setContentView(R.layout.activity_main）;
SensingTextView电视=新SensingTextView（本）;
的SensorManager SM =（的SensorManager）getSystemService（Context.SENSOR_SERVICE）;
sm.registerListener（电视，
sm.getDefaultSensor（Sensor.TYPE_MAGNETIC_FIELD）
SensorManager.SENSOR_DELAY_UI）;
的setContentView（电视）;}
公共类SensingTextView扩展TextView的实现SensorEventListener {
公共SensingTextView（上下文的背景下）{
超级（上下文）;
} @覆盖
公共无效onSensorChanged（SensorEvent事件）{ 字符串=中newstr的String.format（X：％F \\ NY：％F \\新西兰：％F \\ n \\ nSQRTx ^ 2 + Y ^ 2 + Z ^ 2％F \\ n \\ nArithmeticAvg：％F
新对象[] {event.values [0]，event.values [1]，event.values [2]，的Math.sqrt（（（event.values [0] * event.values [0]）
+（event.values [1] * event.values [1]）+（event.values [2] * event.values [2]））），
（（event.values [0] + event.values [1] + event.values [2]）/ 3）
}）; 的setText（中newstr）; }
解决方案
如果你想你的价值观上传到 MYSQL 此数据库的步骤：
1 - 有需要的领域在服务器上创建表
2 - 编写PHP或任何服务器端code从客户端获得的值
3 - 实现了code的android
JOSNParser.java
进口java.io.BufferedReader中;
进口java.io.IOException异常;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;
进口java.io.UnsupportedEncodingException;
进口的java.util.List;进口org.apache.http.HttpEntity;
进口org.apache.http.Htt presponse;
进口org.apache.http.NameValuePair;
进口org.apache.http.client.ClientProtocolException;
进口org.apache.http.client.entity.UrlEn codedFormEntity;
进口org.apache.http.client.methods.HttpGet;
进口org.apache.http.client.methods.HttpPost;
进口org.apache.http.client.utils.URLEn codedUtils;
进口org.apache.http.impl.client.DefaultHttpClient;
进口org.json.JSONException;
进口org.json.JSONObject;进口android.util.Log;公共类JSONParser { 静态InputStream为= NULL;
静态的JSONObject jObj = NULL;
静态JSON字符串=; //构造
公共JSONParser（）{ } //函数得到JSON的网址
//通过HTTP POST或GET mehtod
公众的JSONObject makeHtt prequest（URL字符串，字符串的方法，
清单＆LT;＆的NameValuePair GT; PARAMS）{ //使HTTP请求
尝试{ //检查请求的方法
如果（方法==POST）{
//请求方法是POST
// defaultHttpClient
DefaultHttpClient的HttpClient =新DefaultHttpClient（）;
HttpPost httpPost =新HttpPost（URL）;
httpPost.setEntity（新UrlEn codedFormEntity（PARAMS））; HTT presponse HTT presponse = httpClient.execute（httpPost）;
HttpEntity httpEntity = HTT presponse.getEntity（）;
是= httpEntity.getContent（）; }否则如果（方法==GET）{
//请求方法是GET
DefaultHttpClient的HttpClient =新DefaultHttpClient（）;
字符串中的paramString = URLEn codedUtils.format（参数，可以UTF-8）;
网址+ =？ +中的paramString;
HTTPGET HTTPGET =新HTTPGET（URL）; HTT presponse HTT presponse = httpClient.execute（HTTPGET）;
HttpEntity httpEntity = HTT presponse.getEntity（）;
是= httpEntity.getContent（）;
} }赶上（UnsupportedEncodingException五）{
e.printStackTrace（）;
}赶上（ClientProtocolException E）{
e.printStackTrace（）;
}赶上（IOException异常五）{
e.printStackTrace（）;
} 尝试{
读者的BufferedReader =新的BufferedReader（新的InputStreamReader（
是，ISO-8859-1），8）;
StringBuilder的SB =新的StringBuilder（）;
串线= NULL;
而（（行= reader.readLine（））！= NULL）{
sb.append（行+\\ n）;
}
is.close（）;
JSON = sb.toString（）;
}赶上（例外五）{
Log.e（缓冲区错误，错误转换结果+ e.toString（））;
} //尝试分析字符串到一个JSON对象
尝试{
jObj =新的JSONObject（JSON）;
}赶上（JSONException E）{
Log.e（JSON解析器，错误分析数据+ e.toString（））;
} //返回JSON字符串
返回jObj; }
}
在这样的活动上载code - 假设你有一个按钮发送数据
。 公共类MainActivity延伸活动{
ProgressDialog pDialog; JSONParser jsonParser =新JSONParser（）;
按钮送出数据;
JSON的JSONObject;私人静态字符串url_create_user =HTTP：//localhost/android_connect/getData.php私有静态最后弦乐TAG_SUCCESS =成功;
@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_main）; 送出数据=（按钮）findViewById（R.id.send）; sendData.setOnClickListener（新View.OnClickListener（）{ @覆盖
公共无效的onClick（视图v）{
新CreateNewUser（）执行（）; }
}）;
类CreateNewUser扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; {
@覆盖
在preExecute保护无效（）{
super.on preExecute（）;
pDialog =新ProgressDialog（MainActivity.this）;
pDialog.setMessage（上传数据...）;
pDialog.setIndeterminate（假）;
pDialog.setCancelable（真）;
pDialog.show（）;
}
@覆盖
保护字符串doInBackground（字符串...为arg0）{ //大厦参数
清单＆LT;＆的NameValuePair GT; PARAMS =新的ArrayList＆LT;＆的NameValuePair GT;（）; //到达这里您valuse像字符串值=数据 params.add（新BasicNameValuePair（价值，价值））; JSON = jsonParser.makeHtt prequest（url_create_user，POST，则params）; 尝试{
INT成功= json.getInt（TAG_SUCCESS）; 如果（成功== 1）{
//写入日志文件的东西 }其他{ }
}赶上（JSONException E）{
e.printStackTrace（）;
}
返回null;
}
保护无效onPostExecute（字符串FILE_URL）{
//辞退做一次对话
pDialog.dismiss（）;
如果（JSON！= NULL）{
Toast.makeText（getApplicationContext（）的数据已经发送成功！，Toast.LENGTH_LONG）.show（）;
}
其他
Toast.makeText（getApplicationContext（）！发送失败的数据，Toast.LENGTH_LONG）.show（）;
}
}
}
这行：
私有静态字符串url_create_user =HTTP：//localhost/android_connect/getData.php
表示：yourserver / FOLDERNAME（其中文件）/ PHP文件来获取数据
访问getdata.php
＆LT; PHP
//连接到服务器$ CON = mysql_connect（DB_NAME，USER_NAME，密码）或死亡（mysql_error（））; // Selecing数据库
$ DB = mysql_select_db（DB_NAME）或死亡（mysql_error（））;
//检查必填字段
如果（使用isset（$ _ POST ['值']））{ $ _values = $ _ POST ['值'];
// MySQL的插入新行
$结果= mysql_query（INSERT INTO TABLE_NAME（数据）VALUES（'$ _值'））; db.close（）;？＆GT;
I created MAGNETIC_FIELD sensor. this code giving x y z event values, ArithmeticAvg and SQRTx^2+y^2+z^2 i have to upload database these values. how can i upload database these values with json or something else. here my code
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
SensingTextView tv = new SensingTextView(this);
SensorManager sm = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
sm.registerListener(tv,
sm.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),
SensorManager.SENSOR_DELAY_UI);
setContentView(tv);
}
public class SensingTextView extends TextView implements SensorEventListener {
public SensingTextView(Context context) {
super(context);
}
@Override
public void onSensorChanged(SensorEvent event) {
String newstr = String.format("x: %f\ny:%f\nz:%f\n\nSQRTx^2+y^2+z^2: %f\n\nArithmeticAvg: %f",
new Object[] { event.values[0],event.values[1],event.values[2],Math.sqrt(((event.values[0] * event.values[0])
+ (event.values[1] * event.values[1]) + (event.values[2] * event.values [2]))),
((event.values[0] + event.values[1] + event.values[2])/3)
} );
setText(newstr);
}
解决方案
If you want to upload your values to mySql database here is the steps :
1 - create table on the server with the fields needed.
2 - write php or any server side code to get the values from client
3 - implement the code in android
JOSNParser.java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
// Making HTTP request
try {
// check for request method
if(method == "POST"){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}else if(method == "GET"){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
in upload code in activity like this - assumed you have a button to send data.
public class MainActivity extends Activity {
ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
Button sendData;
JSONObject json;
private static String url_create_user = "http://localhost/android_connect/getData.php";
private static final String TAG_SUCCESS = "success";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sendData = (Button)findViewById(R.id.send);
sendData.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new CreateNewUser().execute();
}
});
class CreateNewUser extends AsyncTask<String, String,String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Uploading data...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(String... arg0) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
//get here your valuse like String values = "your data"
params.add(new BasicNameValuePair("values", values));
json = jsonParser.makeHttpRequest(url_create_user, "POST", params);
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
//write something in log file
} else {
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
if(json != null){
Toast.makeText(getApplicationContext(), "The data has been sent successfully!", Toast.LENGTH_LONG).show();
}
else
Toast.makeText(getApplicationContext(), "Failed to send data!", Toast.LENGTH_LONG).show();
}
}
}
This line :
private static String url_create_user = "http://localhost/android_connect/getData.php";
means : yourserver/foldername(in which the file)/php file to get the data
getData.php
<?php
//connect to server
$con = mysql_connect(db_name, user_name, password) or die(mysql_error());
// Selecing database
$db = mysql_select_db(db_name) or die(mysql_error());
// check for required fields
if (isset($_POST['values']) ) {
$_values = $_POST['values'];
// mysql inserting a new row
$result = mysql_query("INSERT INTO table_name(data) VALUES('$_values')");
db.close();
?>
这篇关于安卓值上传数据库使用JSON的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
