所以我试图从Android应用程序发送一个请求（带有一个参数）到PHP文件，该文件从MySQL数据库中提取数据并需要将产品信息返回到Android应用程序。
Android应用程序有3个活动。 Main活动只显示一个按钮。单击此按钮，将启动一个新活动，该活动从后端提取产品数据（仅限品牌和型号）并显示它。单击一个，我需要向后端发送请求并提取特定于所选产品的数据。产品名称是主键。数据在PHP和Android应用程序之间以JSON格式发送。
以下是Android应用程序的代码，该应用程序仅发送一个特定产品的请求。
ViewProductActivity.class
public class ViewProductActivity extends Activity {
private ProgressDialog pDialog;
TextView make;
TextView model;
TextView type;
private String url_get = "http://10.0.1.57/pull_product.php?";
String make_get;
private static final String TAG_MAKE = "Make";
private static final String TAG_MODEL = "Model";
private static final String TAG_TYPE = "Type";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_product);
make = (TextView) findViewById(R.id.Make);
model = (TextView) findViewById(R.id.Model);
type = (TextView) findViewById(R.id.Type);
Intent i = getIntent();
make_get = i.getStringExtra(TAG_MAKE);
new GetProductDetails().execute();
}
class GetProductDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ViewProductActivity.this);
pDialog.setMessage("Loading Product details. Please wait...");
pDialog.setIndeterminate(true);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* Getting product details in background thread
* */
protected String doInBackground(String... params) {
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
// Building Parameters
List<NameValuePair> params = new LinkedList<NameValuePair>();
params.add(new BasicNameValuePair("make", make_get));
String paramString = URLEncodedUtils.format(params,"utf-8");
HttpClient client = new DefaultHttpClient();
url_get+=paramString;
HttpGet get = new HttpGet(url_get);
HttpResponse response = null;
//ResponseHandler<String> responseHandler = new BasicResponseHandler();
try {
response = client.execute(get);
} catch (ClientProtocolException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
JSONObject test = null;
try {
test = new JSONObject(response.toString());
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d("Single Product Details", test.toString());
try {
make.setText(test.getString(TAG_MAKE));
model.setText(test.getString(TAG_MODEL));
type.setText(test.getString(TAG_TYPE));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once got all details
pDialog.dismiss();
}
}
}
我也粘贴了我的AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8"
android:targetSdkVersion="19"/>
<uses-permission android:name="android.permission.INTERNET" />
<application
android:configChanges="keyboardHidden|orientation"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:allowBackup="true" android:enabled="true">
<activity
android:name="com.example.test.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- All Products Activity -->
<activity
android:name="com.example.test.AllProductsActivity"
android:label="All Products" >
</activity>
<activity
android:name="com.example.test.ViewProductActivity"
android:label="View Product Details">
</activity>
</application>
<!-- Internet Permissions -->
</manifest>
和pull_product.php文件
<?php
mysql_connect("127.0.0.1","root","admin");
mysql_select_db("test");
$product=mysql_real_escape_string($_GET["make"]);
$query="SELECT * FROM products WHERE `Make` = '$product'";
$q=mysql_query($query);
$result = mysql_fetch_array($q);
$product = array();
$product["Make"] = $result["Make"];
$product["Model"] = $result["Model"];
$product["Type"] = $result["Type"];
print(json_encode($product));
mysql_close();
?>
这是我试图从
中提取的表格的示例
品牌型号类型价格
三星Galaxy S4手机50000
LG Nexus 5手机29000
Apple iPad 4平板电脑40000
这是我在LogCat中收到的错误消息：
05-14 18:05:19.001: D/AbsListView(19846): unregisterIRListener() is called
05-14 18:05:19.026: D/AbsListView(19846): unregisterIRListener() is called
05-14 18:05:19.031: E/ViewRootImpl(19846): sendUserActionProduct() mView == null
05-14 18:05:23.011: D/AbsListView(19846): unregisterIRListener() is called
05-14 18:05:23.021: E/MoreInfoHPW_ViewGroup(19846): Parent view is not a TextView
05-14 18:05:23.086: D/ProgressBar(19846): updateDrawableBounds: left = 0
05-14 18:05:23.086: D/ProgressBar(19846): updateDrawableBounds: top = 0
05-14 18:05:23.086: D/ProgressBar(19846): updateDrawableBounds: right = 102
05-14 18:05:23.086: D/ProgressBar(19846): updateDrawableBounds: bottom = 102
05-14 18:05:23.126: I/System.out(19846): main calls detatch()
05-14 18:05:23.126: D/AndroidRuntime(19846): Shutting down VM
05-14 18:05:23.126: W/dalvikvm(19846): threadid=1: thread exiting with uncaught exception (group=0x418aec08)
05-14 18:05:23.131: E/AndroidRuntime(19846): FATAL EXCEPTION: main
05-14 18:05:23.131: E/AndroidRuntime(19846): Process: com.example.test, PID: 19846
05-14 18:05:23.131: E/AndroidRuntime(19846): android.os.NetworkOnMainThreadException
05-14 18:05:23.131: E/AndroidRuntime(19846): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1156)
05-14 18:05:23.131: E/AndroidRuntime(19846): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
05-14 18:05:23.131: E/AndroidRuntime(19846): at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
05-14 18:05:23.131: E/AndroidRuntime(19846): at libcore.io.IoBridge.connect(IoBridge.java:112)
05-14 18:05:23.131: E/AndroidRuntime(19846): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
05-14 18:05:23.131: E/AndroidRuntime(19846): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
05-14 18:05:23.131: E/AndroidRuntime(19846): at java.net.Socket.connect(Socket.java:843)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:165)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:167)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:125)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.impl.client.DefaultRequestDirector.executeOriginal(DefaultRequestDirector.java:1179)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:644)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
05-14 18:05:23.131: E/AndroidRuntime(19846): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
05-14 18:05:23.131: E/AndroidRuntime(19846): at com.example.test.ViewProductActivity$GetProductDetails$1.run(ViewProductActivity.java:112)
05-14 18:05:23.131: E/AndroidRuntime(19846): at android.os.Handler.handleCallback(Handler.java:733)
05-14 18:05:23.131: E/AndroidRuntime(19846): at android.os.Handler.dispatchMessage(Handler.java:95)
05-14 18:05:23.131: E/AndroidRuntime(19846): at android.os.Looper.loop(Looper.java:157)
05-14 18:05:23.131: E/AndroidRuntime(19846): at android.app.ActivityThread.main(ActivityThread.java:5356)
05-14 18:05:23.131: E/AndroidRuntime(19846): at java.lang.reflect.Method.invokeNative(Native Method)
05-14 18:05:23.131: E/AndroidRuntime(19846): at java.lang.reflect.Method.invoke(Method.java:515)
05-14 18:05:23.131: E/AndroidRuntime(19846): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
05-14 18:05:23.131: E/AndroidRuntime(19846): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
05-14 18:05:23.131: E/AndroidRuntime(19846): at dalvik.system.NativeStart.main(Native Method)
05-14 18:05:25.521: W/ApplicationPackageManager(20272): getCSCPackageItemText()
05-14 18:05:25.556: E/MoreInfoHPW_ViewGroup(20272): Parent view is not a TextView
非常感谢！
答案 0 :(得分：0)
要摆脱module.my_bucket.aws_s3_bucket_policy.bucket_policy:
id = my-bucket
bucket = my-bucket
policy = {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::____________:user/srv_my-bucket"
},
"Action": [ "s3:*" ],
"Resource": [
"arn:aws:s3:::my-bucket",
"arn:aws:s3:::my-bucket/*"
]
}
]
}
异常，请从android.os.NetworkOnMainThreadException方法中删除调用runOnUiThread()方法：
doInBackground(String... params)如果要更新UI，请使用protected JSONObject doInBackground(String... params) {
List<NameValuePair> params = new LinkedList<NameValuePair>();
params.add(new BasicNameValuePair("make", make_get));
String paramString = URLEncodedUtils.format(params,"utf-8");
HttpClient client = new DefaultHttpClient();
url_get+=paramString;
HttpGet get = new HttpGet(url_get);
HttpResponse response = null;
//ResponseHandler<String> responseHandler = new BasicResponseHandler();
try {
response = client.execute(get);
} catch (ClientProtocolException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
JSONObject test = null;
try {
test = new JSONObject(response.toString());
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d("Single Product Details", test.toString());
return test;
}
方法：
onPostExecute