使用PHP通过Android从MySQL插入和接收数据

我在运行此应用程序时遇到类似的错误。 “解析数据org.json.JSONException:Value时出错 这是我的register\u user.java

package com.iwantnew.www;
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;
import android.widget.TextView;

public class register_user extends Activity{
    // Progress Dialog
        private ProgressDialog pDialog;
    JSONParser jsonParser = new JSONParser();
    EditText signup_username;
    EditText signup_email;
    EditText signup_password;
    Button registerBtn;
    TextView registerErrorMsg;

    // url to create new product
        private static String url_create_users = "http://10.0.2.2/http://10.0.2.2/android_iwant/signup_success.php";
        // JSON Node names
        private static final String TAG_SUCCESS = "success";

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.signup_form);
        // Edit Text
                signup_username = (EditText) findViewById(R.id.signup_username);
                signup_email = (EditText) findViewById(R.id.signup_email);
                signup_password = (EditText) findViewById(R.id.signup_password);                
                registerBtn = (Button) findViewById(R.id.regiserBtn);

                // button click event
                registerBtn.setOnClickListener(new View.OnClickListener() {

                    @Override
                    public void onClick(View view) {
                        // creating new product in background thread
                        new CreateNewUser().execute();
                    }
                });

    }
    class CreateNewUser extends AsyncTask<String, String, String> {

        /**
         * Before starting background thread Show Progress Dialog
         * */
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(register_user.this);
            pDialog.setMessage("Creating Users..");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);
            pDialog.show();
        }

        /**
         * Creating product
         * */
        protected String doInBackground(String... args) {
            /*String username = signup_username.getText().toString();
            String email =  signup_email.getText().toString();
            String password = signup_password.getText().toString();*/

            //Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("username", signup_username.getText().toString()));
            params.add(new BasicNameValuePair("email",signup_email.getText().toString()));
            params.add(new BasicNameValuePair("password", signup_password.getText().toString()));

            // getting JSON Object
            // Note that create product url accepts POST method
            JSONObject json = jsonParser.makeHttpRequest(url_create_users,
                    "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 users
                    Intent i = new Intent(getApplicationContext(), MainActivity.class);
                    startActivity(i);

                    // closing this screen
                    finish();
                } else {
                    // failed to create users

                }
            } 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.iwantnew.www；
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；
导入android.widget.TextView；
公共类注册用户扩展活动{
//进度对话框
私人对话；
JSONParser JSONParser=新的JSONParser（）；
EditText注册\用户名；
EditText注册电子邮件；
EditText注册密码；
按钮寄存器；
TextView注册表errormsg；
//创建新产品的url
私有静态字符串url\u创建用户=”http://10.0.2.2/http://10.0.2.2/android_iwant/signup_success.php";
//JSON节点名称
私有静态最终字符串标记_SUCCESS=“SUCCESS”；
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.signup_表单）；
//编辑文本
注册\用户名=（EditText）findViewById（R.id.signup\用户名）；
注册\电子邮件=（EditText）findViewById（R.id.signup\电子邮件）；
注册密码=（EditText）findViewById（R.id.signup\u密码）；
registerBtn=（按钮）findviewbyd（R.id.regisebtn）；
//按钮点击事件
registerBtn.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CreateNewUser（）.execute（）；
}
});
}
类CreateNewUser扩展异步任务{
/**
*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=新建进度对话框（注册用户。此）；
pDialog.setMessage（“创建用户…”）；
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username=signup_username.getText（）.toString（）；
字符串email=signup_email.getText（）.toString（）；
String password=signup_password.getText（）.toString（）*/
//建筑参数
List params=new ArrayList（）；
add（新的BasicNameValuePair（“用户名”，signup_username.getText（）.toString（））；
add（新的BasicNameValuePair（“email”，signup_email.getText（）.toString（））；
add（新的BasicNameValuePair（“密码”，signup_password.getText（）.toString（））；
//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 users，
“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）{
//已成功创建用户
Intent i=新的Intent（getApplicationContext（），MainActivity.class）；
星触觉（i）；
//关闭此屏幕
完成（）；
}否则{
//未能创建用户
}
}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（）；
}
}
}

这是JSONParser.java。这是android的数据解析类

package com.iwantnew.www;

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 method
    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;

    }
}

package.com.iwantnew.www；
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.List；
导入org.apache.http.HttpEntity；
导入org.apache.http.HttpResponse；
导入org.apache.http.NameValuePair；
导入org.apache.http.client.ClientProtocolException；
导入org.apache.http.client.entity.UrlEncodedFormEntity；
导入org.apache.http.client.methods.HttpGet；
导入org.apache.http.client.methods.HttpPost；
导入org.apache.http.client.utils.URLEncodedUtils；
导入org.apache.http.impl.client.DefaultHttpClient；
导入org.json.JSONException；
导入org.json.JSONObject；
导入android.util.Log；
公共类JSONParser{
静态InputStream为空；
静态JSONObject jObj=null；
静态字符串json=“”；
//建造师
公共JSONParser（）{
}
//函数从url获取json
//通过使用HTTP POST或GET方法
公共JSONObject makeHttpRequest（字符串url、字符串方法、，
列表参数）{
//发出HTTP请求
试一试{
//检查请求方法
如果（方法==“POST”）{
//请求方法为POST
//defaultHttpClient
DefaultHttpClient httpClient=新的DefaultHttpClient（）；
HttpPost HttpPost=新的HttpPost（url）；
setEntity（新的UrlEncodedFormEntity（参数））；
<?php
// array for JSON response
$response = array();
if(isset($_POST['username']) && isset($_POST['email']) && isset($_POST['password'])){
    $username = $_POST['username'];
    $email = $_POST['email'];
    $password = $_POST['password'];

    // include db connect class
    require_once __DIR__ . '/db_connect.php';


    // connecting to db
    $db = new DB_CONNECT();

     $uuid = uniqid('', true);
        $hash = $this->hashSSHA($password);
        $encrypted_password = $hash["encrypted"]; // encrypted password
        $salt = $hash["salt"]; // salt
        $result = mysql_query("INSERT INTO users(unique_id, name, email, encrypted_password, salt, created_at) VALUES('$uuid', '$username', '$email', '$encrypted_password', '$salt', NOW())");
        // check for successful store
        if ($result) {
            // get user details 
            $uid = mysql_insert_id(); // last inserted id
            $result = mysql_query("SELECT * FROM users WHERE uid = $uid");
            // return user details
            return mysql_fetch_array($result);
        } else {
            return false;
        }

        $result =  mysql_query("INSERT INTO users(name,email,password) VALUES ('$username','$email,$password')");
     // check if row inserted or not
    if ($result) {
        // successfully inserted into database
        $response["success"] = 1;
        $response["message"] = "successfully signed Up.";

        // echoing JSON response
        echo json_encode($response);}
        else {
        // failed to insert row
        $response["success"] = 0;
        $response["message"] = "Oops! An error occurred.";

        // echoing JSON response
        echo json_encode($response);
    }
} else {
    // required field is missing
    $response["success"] = 0;
    $response["message"] = "Required field(s) is missing";

    // echoing JSON response
    echo json_encode($response);

}
?>

// check for successful store
        if ($result) {
            // get user details 
            $uid = mysql_insert_id(); // last inserted id
            $result = mysql_query("SELECT * FROM users WHERE uid = $uid");
            // return user details
            return mysql_fetch_array($result);
        } else {
            return false;
        }

// check for successful store
        if ($result) {
            // get user details 
            $uid = mysql_insert_id(); // last inserted id
            $result = mysql_query("SELECT * FROM users WHERE uid = $uid");
            // return user details
           echo json_encode(mysql_fetch_array($result));
           exit;               
        }