Java E/JSON解析器(1506):解析数据时出错[输入结束,字符0处]

Java E/JSON解析器(1506):解析数据时出错[输入结束,字符0处],java,php,json,Java,Php,Json,我的应用程序,用于将用户输入数据传输到我的SQL数据库。我应该填写所有字段,然后单击保存,以便在我的sql数据库中更新数据。在清理了很多错误之后,我终于陷入了一个我无法解决的错误。非常感谢您提供的任何帮助。请告知我可以进行哪些更改以消除错误。错误是 08-04 05:47:48.799: E/JSON Parser(1506): Error parsing data [End of input at character 0 of ] 我的代码如下: private Pr

我的应用程序,用于将用户输入数据传输到我的SQL数据库。我应该填写所有字段,然后单击保存,以便在我的sql数据库中更新数据。在清理了很多错误之后,我终于陷入了一个我无法解决的错误。非常感谢您提供的任何帮助。请告知我可以进行哪些更改以消除错误。错误是

       08-04 05:47:48.799: E/JSON Parser(1506): Error parsing data [End of input at character 0 of ] 
我的代码如下:

    private ProgressDialog pDialog;

    JSONParser jsonParser = new JSONParser();
    EditText inputDriver;
    EditText inputLicence;
    EditText inputOfficer;
    EditText inputSpeed;
    EditText FineAppl;
    EditText inputCategory;
    TextView registerFine;

    // url to create new fine
    private static String url_create_fine = "http://192.168.1.1/android_api/create.php";

    // JSON Node names/
    private static final String TAG_SUCCESS = "success";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        speed = (EditText) findViewById(R.id.editText3);    
        Fine = (TextView)findViewById(R.id.editText4);  
        btnSelectDate=(Button)findViewById(R.id.buttonSelectDate);
        btnSelectTime=(Button)findViewById(R.id.buttonSelectTime);
        inputDriver = (EditText) findViewById(R.id.editText1);
        inputLicence = (EditText) findViewById(R.id.editText2);
        inputOfficer = (EditText) findViewById(R.id.editText5);
        inputSpeed = (EditText) findViewById(R.id.editText3);
        FineAppl = (EditText) findViewById(R.id.editText4);
        inputCategory = (EditText) findViewById(R.id.editText6);
        registerFine = (TextView) findViewById(R.id.fineregistered);


        // Create button
       Button btnRegisterfine = (Button) findViewById(R.id.savefine);





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

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


                      });
        }
                        /**
                         * Background Async Task to Create new product
                         * */
                        class CreateNewFine extends AsyncTask<String, String, String> {


                            @Override
                            protected void onPreExecute() {
                                super.onPreExecute();
                                pDialog = new ProgressDialog(FineCalc.this);
                                pDialog.setMessage("Registering Fine..");
                                pDialog.setIndeterminate(false);
                                pDialog.setCancelable(true);
                                pDialog.show();
                            }


                            protected String doInBackground(String... args) {
                                String driver = inputDriver.getText().toString();
                                String licencenum = inputLicence.getText().toString();
                                String officer = inputOfficer.getText().toString();
                                String speed = inputSpeed.getText().toString();
                                String fine= FineAppl.getText().toString();
                                String category = inputCategory.getText().toString();


                                // Building Parameters
                                List<NameValuePair> params = new ArrayList<NameValuePair>();
                                params.add(new BasicNameValuePair("driver", driver));
                                params.add(new BasicNameValuePair("licencenum", licencenum));
                                params.add(new BasicNameValuePair("officer", officer));
                                params.add(new BasicNameValuePair("speed", speed));
                                params.add(new BasicNameValuePair("fine", fine));
                                params.add(new BasicNameValuePair("category", category));

                                // getting JSON Object
                                // Note that create product url accepts POST method
                                JSONObject json = jsonParser.makeHttpRequest(url_create_fine, "POST", params);


                                // check log cat from response
                                //Log.d("Create Response", json.toString());

                                // check for success tag
                                try {
                                       //if (json.getString(TAG_SUCCESS) != null) {
                                    if(json != null && !(json).isNull(TAG_SUCCESS)){
                                    registerFine.setText("");
                                    String success = json.getString(TAG_SUCCESS);
                                   // int success = json.getInt(TAG_SUCCESS);

                                   // if (success == 1) {
                                    if(Integer.parseInt(success) == 1){
                                        // successfully created product
                                       //Intent i = new Intent(getApplicationContext(), UserLogin.class);
                                        //startActivity(i);
                                        registerFine.setText("Successful");

                                        // closing this screen
                                        finish();
                                    } else {
                                    }   // failed to create product
                                    }
                                } catch (JSONException e) {
                                    e.printStackTrace();
                                }

                                return null;
                            }
private ProgressDialog pDialog;
JSONParser JSONParser=新的JSONParser();
编辑文本输入驱动程序;
编辑文本输入许可证;
编辑文本输入管理器;
编辑文本输入速度;
编辑文本FineAppl;
编辑文本输入类别;
文本视图注册表项;
//创建新罚款的url
私有静态字符串url_create_fine=”http://192.168.1.1/android_api/create.php";
//JSON节点名称/
私有静态最终字符串标记_SUCCESS=“SUCCESS”;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
速度=(EditText)findViewById(R.id.editText3);
Fine=(TextView)findViewById(R.id.editText4);
btnSelectDate=(按钮)findViewById(R.id.buttonSelectDate);
btnSelectTime=(按钮)findViewById(R.id.buttonSelectTime);
inputDriver=(EditText)findViewById(R.id.editText1);
InputLicense=(EditText)findViewById(R.id.editText2);
inputOfficer=(EditText)findViewById(R.id.editText5);
inputSpeed=(EditText)findViewById(R.id.editText3);
FineAppl=(EditText)findViewById(R.id.editText4);
inputCategory=(EditText)findViewById(R.id.editText6);
registerFine=(TextView)findViewById(R.id.fineregistered);
//创建按钮
按钮btnRegisterfine=(按钮)findViewById(R.id.savefine);
//按钮点击事件
btnRegisterfine.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CreateNewFine().execute();
}
});
}
/**
*创建新产品的后台异步任务
* */
类CreateNewFine扩展了AsyncTask{
@凌驾
受保护的void onPreExecute(){
super.onPreExecute();
pDialog=新建进度对话框(FineCalc.this);
pDialog.setMessage(“注册罚款…”);
pDialog.setUndeterminate(假);
pDialog.setCancelable(真);
pDialog.show();
}
受保护的字符串doInBackground(字符串…args){
字符串驱动程序=inputDriver.getText().toString();
字符串licencenum=InputLicense.getText().toString();
String officer=inputOfficer.getText().toString();
字符串速度=inputSpeed.getText().toString();
字符串fine=FineAppl.getText().toString();
字符串类别=inputCategory.getText().toString();
//建筑参数
List params=new ArrayList();
添加参数(新的BasicNameValuePair(“驱动程序”,驱动程序));
添加(新的BasicNameValuePair(“licencenum”,licencenum));
参数添加(新的BasicNameValuePair(“高级职员”),高级职员);
参数添加(新的BasicNameValuePair(“速度”,速度));
参数添加(新的BasicNameValuePair(“精细”,精细));
参数添加(新的BasicNameValuePair(“类别”,类别));
//获取JSON对象
//请注意,创建产品url接受POST方法
JSONObject json=jsonParser.makeHttpRequest(url_create_fine,“POST”,params);
//从响应中检查日志cat
//d(“创建响应”,json.toString());
//检查成功标签
试一试{
//if(json.getString(TAG_SUCCESS)!=null){
if(json!=null&&!(json).isNull(TAG_SUCCESS)){
registerFine.setText(“”);
String success=json.getString(TAG_success);
//int success=json.getInt(TAG_success);
//如果(成功==1){
if(Integer.parseInt(success)==1){
//已成功创建产品
//Intent i=newintent(getApplicationContext(),UserLogin.class);
//星触觉(i);
registerFine.setText(“成功”);
//关闭此屏幕
完成();
}否则{
}//未能创建产品
}
}捕获(JSONException e){
e、 printStackTrace();
public class JSONParser {

    static InputStream is = null;
    static JSONObject jObj = null;
    static String json = "";

// constructor
public JSONParser() {

}

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, HTTP.UTF_8), 8);
        //BufferedReader reader = new BufferedReader(new InputStreamReader(
               // is, HTTP.UTF_8), 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());
        Log.e("JSON Parser", "Error parsing data [" + e.getMessage()+"] "+json);
    }

    // return JSON String
    return jObj;

}


}



                            protected void onPostExecute(String file_url) {
                                // dismiss the dialog once done
                                pDialog.dismiss();
                            }

                        }      
      <?php


// array for JSON response
$response = array();

// check for required fields
if (isset($_POST['driver'], $_POST['licencenum'], $_POST['officer'], $_POST['speed'] , $_POST['fine'],$_POST['category'])){

$driver = $_POST['driver'];
$licencenum = $_POST['licencenum'];
$officer = $_POST['officer'];
$speed = $_POST['speed'];
$fine = $_POST['fine'];
$category = $_POST['category'];


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

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

// mysql inserting a new row
$result = mysql_query("INSERT INTO fineregister(driver,licencenum,officer,speed,fine,category) VALUES                ('$driver','$licencenum','$officer','$speed','$fine',      '$category')");

// check if row inserted or not
if ($result) {
    // successfully inserted into database
    $response["success"] = 1;
    $response["message"] = "Speed Ticket Successfully Registered.";

    // 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);
}
?>
HttpResponse response = client.execute(httpPost);
String responseBody = EntityUtils.toString(response.getEntity());

pass the string into json array and get the response value

            JSONArray jsArray = new JSONArray(responseBody);
            JSONObject js = jsArray.getJSONObject(0);
            String returnvalmsg = js.getString("message");
            String returnvalsucc = js.getString("success");