上传图片到服务器 php-my-sql(android)
uploading image to server php-my-sql(android)
我想将我的图像保存到 php-my-sql 数据库...
我在 add-img 字段中有一张图片检查我的代码
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
InputStream inputStream;
if (requestCode == 1 && resultCode == RESULT_OK && data != null) {
Bitmap bmp = (Bitmap) data.getExtras().get("data");
add_img.setImageBitmap(bmp);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 90, stream);
byte[] byte_arr = stream.toByteArray();
imageString = Base64.encodeBytes(byte_arr);
}
}
我正在将图像字符串值传递给 asynktask activity
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
email_value="gdfgdfgd";
params.add(new BasicNameValuePair("email_id",email_value));
params.add(new BasicNameValuePair("image",imageString));
JSONObject json = jsonParser.makeHttpRequest(url_create_image,
"POST", params);
Log.d("Create Response", json.toString());
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
我的 Json 解析器 Class 是
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) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
try {
if(method.equals("POST")){
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.equals("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 {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}}
我的 php 的字符串 url 是
<?php
$response = array();
if (isset($_POST['email_id']))
{
$base= $_POST['image'];
$buffer = base64_decode($base);
$buffer = mysql_real_escape_string($buffer);
$email = $_POST['email_id'];
require_once __DIR__ . '/db_connect.php';
$db = new DB_CONNECT();
$result = mysql_query("INSERT INTO image_table(email,image) VALUES('$email ','$buffer')");
if ($result) {
$response["success"] = 1;
$response["message"] = "Image successfully Added.";
echo json_encode($response);
} else {
$response["success"] = 0;
$response["message"] = "Oops! An error occurred.";
echo json_encode($response);
}
} else {
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";
echo json_encode($response);
}
?>
我遇到了这样的错误
03-20 02:08:38.276: E/JSON Parser(2574): Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
03-20 02:08:38.286: E/AndroidRuntime(2574): FATAL EXCEPTION: AsyncTask #1
03-20 02:08:38.286: E/AndroidRuntime(2574): Process: com.big_property, PID: 2574
03-20 02:08:38.286: E/AndroidRuntime(2574): java.lang.RuntimeException: An error occured while executing doInBackground()
03-20 02:08:38.286: E/AndroidRuntime(2574): at android.os.AsyncTask.done(AsyncTask.java:300)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.FutureTask.run(FutureTask.java:242)
03-20 02:08:38.286: E/AndroidRuntime(2574): at android.os.AsyncTask$SerialExecutor.run(AsyncTask.java:231)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.lang.Thread.run(Thread.java:841)
03-20 02:08:38.286: E/AndroidRuntime(2574): Caused by: java.lang.NullPointerException
03-20 02:08:38.286: E/AndroidRuntime(2574): at com.big_property.Post_Property_Activity3$CreateNewFloor.doInBackground(Post_Property_Activity3.java:378)
03-20 02:08:38.286: E/AndroidRuntime(2574): at com.big_property.Post_Property_Activity3$CreateNewFloor.doInBackground(Post_Property_Activity3.java:1)
03-20 02:08:38.286: E/AndroidRuntime(2574): at android.os.AsyncTask.call(AsyncTask.java:288)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
03-20 02:08:38.286: E/AndroidRuntime(2574): ... 4 more
正如@Harry 指出的那样，PHP 代码确实没有发送可以解析为 JSONObject.
的响应
此日志条目：
E/JSON Parser(2574): Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
表示这里出现异常：
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
...因此 jObj 结果仍然为 null。
因此，在出现异常之前添加日志记录以查看响应是什么：
try {
Log.d("JSON Parser", "json response: " + json);
jObj = new JSONObject(json); //Throwing an exception
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
要防止 NullPointerException，请更改此代码：
//Check if not null before referencing json object to prevent NPE
if (json != null){
Log.d("Create Response", json.toString());
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
}
else{
Log.e("doInBackground", "json is null");
}
编辑：查看日志并进行一些研究后，您似乎需要 MySQL 连接才能使用 mysql_real_escape_string()。
在您的 PHP 中试试这个：
<?php
$response = array();
if (isset($_POST['email_id']))
{
$base= $_POST['image'];
$buffer = base64_decode($base);
$email = $_POST['email_id'];
require_once __DIR__ . '/db_connect.php';
$db = new DB_CONNECT();
$query = sprintf("INSERT INTO image_table(email,image) VALUES('%s','%s')", $email, mysql_real_escape_string($buffer));
$result = mysql_query($query);
if ($result) {
............
Note:
A MySQL connection is required before using mysql_real_escape_string() otherwise an error of level E_WARNING is generated, and FALSE is returned. If link_identifier isn't defined, the last MySQL connection is used.
我想将我的图像保存到 php-my-sql 数据库... 我在 add-img 字段中有一张图片检查我的代码
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
InputStream inputStream;
if (requestCode == 1 && resultCode == RESULT_OK && data != null) {
Bitmap bmp = (Bitmap) data.getExtras().get("data");
add_img.setImageBitmap(bmp);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 90, stream);
byte[] byte_arr = stream.toByteArray();
imageString = Base64.encodeBytes(byte_arr);
}
}
我正在将图像字符串值传递给 asynktask activity
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
email_value="gdfgdfgd";
params.add(new BasicNameValuePair("email_id",email_value));
params.add(new BasicNameValuePair("image",imageString));
JSONObject json = jsonParser.makeHttpRequest(url_create_image,
"POST", params);
Log.d("Create Response", json.toString());
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
我的 Json 解析器 Class 是
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) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
try {
if(method.equals("POST")){
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.equals("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 {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}}
我的 php 的字符串 url 是
<?php
$response = array();
if (isset($_POST['email_id']))
{
$base= $_POST['image'];
$buffer = base64_decode($base);
$buffer = mysql_real_escape_string($buffer);
$email = $_POST['email_id'];
require_once __DIR__ . '/db_connect.php';
$db = new DB_CONNECT();
$result = mysql_query("INSERT INTO image_table(email,image) VALUES('$email ','$buffer')");
if ($result) {
$response["success"] = 1;
$response["message"] = "Image successfully Added.";
echo json_encode($response);
} else {
$response["success"] = 0;
$response["message"] = "Oops! An error occurred.";
echo json_encode($response);
}
} else {
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";
echo json_encode($response);
}
?>
我遇到了这样的错误
03-20 02:08:38.276: E/JSON Parser(2574): Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
03-20 02:08:38.286: E/AndroidRuntime(2574): FATAL EXCEPTION: AsyncTask #1
03-20 02:08:38.286: E/AndroidRuntime(2574): Process: com.big_property, PID: 2574
03-20 02:08:38.286: E/AndroidRuntime(2574): java.lang.RuntimeException: An error occured while executing doInBackground()
03-20 02:08:38.286: E/AndroidRuntime(2574): at android.os.AsyncTask.done(AsyncTask.java:300)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.FutureTask.run(FutureTask.java:242)
03-20 02:08:38.286: E/AndroidRuntime(2574): at android.os.AsyncTask$SerialExecutor.run(AsyncTask.java:231)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.lang.Thread.run(Thread.java:841)
03-20 02:08:38.286: E/AndroidRuntime(2574): Caused by: java.lang.NullPointerException
03-20 02:08:38.286: E/AndroidRuntime(2574): at com.big_property.Post_Property_Activity3$CreateNewFloor.doInBackground(Post_Property_Activity3.java:378)
03-20 02:08:38.286: E/AndroidRuntime(2574): at com.big_property.Post_Property_Activity3$CreateNewFloor.doInBackground(Post_Property_Activity3.java:1)
03-20 02:08:38.286: E/AndroidRuntime(2574): at android.os.AsyncTask.call(AsyncTask.java:288)
03-20 02:08:38.286: E/AndroidRuntime(2574): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
03-20 02:08:38.286: E/AndroidRuntime(2574): ... 4 more
正如@Harry 指出的那样，PHP 代码确实没有发送可以解析为 JSONObject.
此日志条目：
E/JSON Parser(2574): Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
表示这里出现异常：
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
...因此 jObj 结果仍然为 null。
因此，在出现异常之前添加日志记录以查看响应是什么：
try {
Log.d("JSON Parser", "json response: " + json);
jObj = new JSONObject(json); //Throwing an exception
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
要防止 NullPointerException，请更改此代码：
//Check if not null before referencing json object to prevent NPE
if (json != null){
Log.d("Create Response", json.toString());
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
}
else{
Log.e("doInBackground", "json is null");
}
编辑：查看日志并进行一些研究后，您似乎需要 MySQL 连接才能使用 mysql_real_escape_string()。
在您的 PHP 中试试这个：
<?php
$response = array();
if (isset($_POST['email_id']))
{
$base= $_POST['image'];
$buffer = base64_decode($base);
$email = $_POST['email_id'];
require_once __DIR__ . '/db_connect.php';
$db = new DB_CONNECT();
$query = sprintf("INSERT INTO image_table(email,image) VALUES('%s','%s')", $email, mysql_real_escape_string($buffer));
$result = mysql_query($query);
if ($result) {
............
Note: A MySQL connection is required before using mysql_real_escape_string() otherwise an error of level E_WARNING is generated, and FALSE is returned. If link_identifier isn't defined, the last MySQL connection is used.