Question

我是Android开发的新手。正在制作应用程序的位置，用户将通过Android中的注册表单向我们注册。但是我没有得到任何错误，也没有得到输出。

这是java的源代码：

package com.example.entrepreneurexpress;

import java.io.InputStream;
import java.util.ArrayList;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import android.annotation.TargetApi;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class InvestorRegister extends Activity {

    EditText YourName;
    EditText email;
    EditText password;
    EditText confirmPassword;
    Button btnClear, btnRegister;

    String nm, emailAdd, cnfPass, pwd;

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.investors_registration);
        ActionBar aBar = getActionBar();
        aBar.setDisplayHomeAsUpEnabled(true);

        YourName = (EditText) findViewById(R.id.invRegName);
        email = (EditText) findViewById(R.id.invRegEmail);
        password = (EditText) findViewById(R.id.invRegPassword);
        confirmPassword = (EditText) findViewById(R.id.invRegConfPassword);

        btnClear = (Button) findViewById(R.id.btnInvRegClear);
        btnClear.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (YourName.length() >= 1) {
                    YourName.setText("");
                }
                if (email.length() >= 1) {
                    email.setText("");
                }
                if (password.length() >= 1) {
                    password.setText("");
                }
                if (confirmPassword.length() >= 1) {
                    confirmPassword.setText("");
                }
            }
        });

        btnRegister = (Button) findViewById(R.id.btnInvRegRegister);
        btnRegister.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                if(
                    (!YourName.getText().toString().equals("")) &&
                    (!email.getText().toString().equals("")) &&
                    (!password.getText().toString().equals(""))
                  ) {
                    /*Toast.makeText(getApplicationContext(), "Registered !", Toast.LENGTH_SHORT).show();
                    Intent i = new Intent(getApplicationContext(), WelcomeInvestor.class);
                    startActivity(i);*/
                    Thread thread = new Thread(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                HttpClient httpclient = new DefaultHttpClient();
                                HttpPost httppost = new HttpPost("http://122.170.107.27/AdroidApp/insert.php");

                                ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
                                nameValuePairs.add(new BasicNameValuePair("invName", YourName.getText().toString()));
                                nameValuePairs.add(new BasicNameValuePair("invPassword", password.getText().toString()));
                                nameValuePairs.add(new BasicNameValuePair("invEmail", email.getText().toString()));

                                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                                HttpResponse response = httpclient.execute(httppost);
                                InputStream inputStream = response.getEntity().getContent();

                                int status = response.getStatusLine().getStatusCode();

                                if(status == 200) {
                                    Toast.makeText(getApplicationContext(), "Registered !", Toast.LENGTH_SHORT).show();
                                    Intent i = new Intent(getApplicationContext(), WelcomeInvestor.class);
                                    startActivity(i);
                                } else {
                                    Toast.makeText(getApplicationContext(), "Some Error Occured !", Toast.LENGTH_SHORT).show();
                                }
                            } catch(Exception e) {
                                Toast.makeText(getApplicationContext(), "Error "+e.toString(), Toast.LENGTH_LONG).show();
                            }
                        }
                    });
                    thread.start();
                } else {
                    Toast.makeText(getApplicationContext(), "Please Fill In All The Details!", Toast.LENGTH_SHORT).show();
                }
            }
        });
    }

这是php代码：

<?php

$output = array();

    $con = mysqli_connect("localhost", "root", "root", "AndroidApp");
    if(!$con) {
        echo "Connection Aborted !<br />" . mysqli_error($con);
    } else {
        echo "Connection Successful !<br />";
    }

    $name = isset($_POST['fullname']) ? $_POST['fullname'] : '';
    $email = isset($_POST['emailAddress']) ? $_POST['emailAddress'] : '';
    $pasword = isset($_POST['passWord']) ? $_POST['passWord'] : '';

    $query = mysqli_query($con, "INSERT INTO Investors
                                    (`invName`, `invEmail`, `invPassword`)
                                VALUES('".$name."', '".$email."', '".$pasword."')");

    if ($query)
    {
        $output["success"] = 1;
        $output["message"] = "Successfully Inserted";

        echo jsonencode($output);
    } else {
        $output["success"] = 0;
        $output["message"] = "insertion failed......";

        echo json_encode($output);  
    }

    mysqli_close($con);
?>

更新java代码后现在收到此错误：

04-10 14:02:26.403: E/linker(29292): load_library(linker.cpp:759): library "libmaliinstr.so" not found

我尽了最大努力，但失败了。请帮助我。感谢。

Answer 1

首先，Strict模式仅用于开发目的，进行调试。并且在发布时不要使用。所有网络通信必须在主线程之外进行。如果你使用严格模式 - permitAll（），你正在搞乱正常操作。因此，使用AsynchTask进行任何您想要的网络通信。

你可以在这里找到教程。

http://www.vogella.com/tutorials/AndroidBackgroundProcessing/article.html#concurrency_asynchtask

此外，您在执行httpclient.execute(httppost);时会直接尝试获取响应。我认为这不会起作用，因为服务器需要时间来响应。

在AsynchTask中，你有一个方法onPostExecute可以正确处理这个问题。

阅读本文 http://blog.vogella.com/2012/02/22/android-strictmode-networkonmainthreadexception/ http://blog.vogella.com/2011/04/04/android-strictmode/

Android：无法在mysql数据库中插入数据

1 个答案: