我制作应用程序并在特定部分发送字符串并收到json。我使用VOLLEY 它运作良好，但现在我需要发送一个json。
这是我的代码：
public static final String DATA_URL = "http://unynote.esy.es/cas/read_allorder.php?id="; // THIS HAVE TO CHANGE JUST TO LOCALHOST:8080/LOGIN
下面：
public class Config {
public static final String DATA_URL = "http://unynote.esy.es/cas/read_allorder.php?id="; // THIS HAVE TO CHANGE JUST TO LOCALHOST:8080/LOGIN
public static final String KEY_NAME = "COD_ALUMNO";
public static final String KEY_ADDRESS = "COD_ASIGNATURA";
public static final String KEY_VC = "GRUPO_SECCION";
public static final String KEY_AULA = "AULA";
public static final String KEY_DIA = "DIA";
public static final String KEY_INICIO = "INICIO";
public static final String KEY_FIN = "FIN";
public static final String JSON_ARRAY = "result";
}
此处是VOLLEY CODE的一部分
public class TabsActivity extends AppCompatActivity implements
View.OnClickListener {
private EditText editTextId;
private Button buttonGet;
private TextView textViewResult;
private ProgressDialog loading;
int cont=1;
String[ ] contenido = new String[7];
String f="";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mainint);
editTextId = (EditText) findViewById(R.id.editTextId);
buttonGet = (Button) findViewById(R.id.buttonGet);
textViewResult = (TextView) findViewById(R.id.textViewResult);
buttonGet.setOnClickListener(this);
}
private void getData() {
String id = editTextId.getText().toString().trim();
if (id.equals("")) {
Toast.makeText(this, "Please enter an id", Toast.LENGTH_LONG).show();
return;
}
loading = ProgressDialog.show(this,"Please wait...","Fetching...",false,false);
String url = Config.DATA_URL+editTextId.getText().toString().trim();
StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
loading.dismiss();
Toast.makeText(getBaseContext(), "si", Toast.LENGTH_LONG).show();
showJSON(response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(TabsActivity.this,error.getMessage().toString(),Toast.LENGTH_LONG).show();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}
private void showJSON(String response){
// Toast.makeText(getBaseContext(), response, Toast.LENGTH_LONG).show();
String name="";
String address="";
String grupo = "";
String aula = "";
String dia = "";
String inicio = "";
String fin = "";
try {
Toast.makeText(getBaseContext(), "LOGIN... ", Toast.LENGTH_LONG).show();
JSONObject jsonObject = new JSONObject(response);
JSONArray ja = jsonObject.getJSONArray("orders");
// JSONArray result = jsonObject.getJSONArray(Config.JSON_ARRAY);
for (int i = 0; i < ja.length(); i++) {
JSONObject collegeData = ja.getJSONObject(i);
name = collegeData.getString("id");
address = collegeData.getString("item");
grupo = collegeData.getString("GRUPO_SECCION");
aula = collegeData.getString("AULA");
dia = collegeData.getString("DIA");
inicio = collegeData.getString("INICIO");
fin = collegeData.getString("FIN");
///database
DBAdapter db= new DBAdapter(this);
db.open();
long id = db.insertContact(address, aula,dia,inicio,fin );
db.close();
db.open();
Cursor c = db.getAllContacts();
if (c.moveToFirst())
{ do{
contenido=getcontenido(c);
}while (c.moveToNext());
}
db.close();
cont= Integer.parseInt( contenido[0]);
/// database
/// alarms
int [] time;
time = parsetime(inicio);
int horai = time[0];
int minutoi = time[1];
int diaa = getDay(dia);
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(System.currentTimeMillis());
cal.set(Calendar.HOUR_OF_DAY, horai);
cal.set(Calendar.MINUTE, minutoi);
cal.set(Calendar.DAY_OF_WEEK, diaa);
cal.add(Calendar.SECOND, 2);
Intent intent = new Intent(getBaseContext(), AlarmReceiver.class);
intent.putExtra("name", address);
//intent.putExtra("curos bn",1);
PendingIntent pendingIntent =
PendingIntent.getBroadcast(getBaseContext(),
cont+1, intent, PendingIntent.FLAG_UPDATE_CURRENT );
AlarmManager alarmManager =
(AlarmManager)getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
cal.getTimeInMillis(), 24 * 7 * 60 * 60 * 1000 , pendingIntent);
////alarms
f=f+"codigo alumno:\t"+name+"\ncodigo/nombre curso:\t" +address+ "\ngrupo:\t"+grupo+"\naula:\t"
+aula+"\ndia:\t"+dia+"\ninicio:\t"+inicio+"\nfin:\t"+fin+"\n:\t";
}
// Toast.makeText(getBaseContext(), collegeData.length(), Toast.LENGTH_LONG).show();
//collegeData.toString();
} catch (JSONException e) {
e.printStackTrace();
}
textViewResult.setText(f);
}
我刚刚发现STRING editTextId.getText（）。这是每个用户的代码，但现在我需要发送带有该字符串的json。
'CCODUSU''45875621'
CCODUSU是标识符
答案 0 :(得分：2)
我会看看StringRequests。以下是如何将事物发送到PHP文件的示例，该文件更新数据库，或者可以执行任何操作：
<强> SetMyStuff.java：
package com.example.your_app.database_requests;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.toolbox.StringRequest;
import java.util.HashMap;
import java.util.Map;
public class SetMyStuff extends StringRequest {
private static final String LOGIN_REQUEST_URL = "http://example.com/SetMyStuff.php";
private Map<String, String> params;
public SetMyStuff(String username, String password, Response.Listener<String> listener) {
super(Request.Method.POST, LOGIN_REQUEST_URL, listener, null);
params = new HashMap<>();
params.put("username", username);
params.put("password", password);
}
@Override
public Map<String, String> getParams() {
return params;
}
}
调用此StringRequest：
Response.Listener<String> listener = new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonResponse = new JSONObject(response);
boolean success = jsonResponse.getBoolean("success");
if (!success) {
Log.e(TAG, "Could not update stuff.");
} else {
Log.e(TAG, "Updated stuff.");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
};
SetMyStuff setMyStuffRequest = new SetMyStuff(username, password, listener);
RequestQueue requestQueue = Volley.newRequestQueue(context);
requestQueue.add(setMyStuffRequest);
收到此内容的PHP文件：
<?php
$password = $_POST["password"];
$username = $_POST["username"];
$con = mysqli_connect("website.com", "dbusername", "dbpassword", "dbtable");
$response = array();
$response["success"] = false;
/* Do something */
$response["success"] = true;
echo json_encode($response);
?>
答案 1 :(得分：0)
您的意思是说您需要发送包含JSON的{{1}}，如果您想这样做，则必须拼写出完整且正确的editTextId.getText().toString().trim()。
JSON您发布的字符串不是'CCODUSU' '45875621'
，您需要将其修改为：
json在{"CCODUSU": "45875621"}
之后提交此字符串后，服务器将收到Config.DATA_URL参数，并且是id。
答案 2 :(得分：0)
我也想出了同样的问题。在找到方法的过程中，我开发出了一种可以帮助你的方法。 如果要将json发布到服务器，则可以创建JsonObjectRequest：
apply plugin: 'java'
apply plugin: 'maven'
apply plugin: 'idea'
group 'com.test'
version '1.0'
sourceCompatibility = 1.8
repositories {
mavenCentral()
mavenLocal()
}
apply from: 'dependencies.gradle'
configurations {
providedCompile
}
dependencies {
compile 'com.opencsv:opencsv:3.8'
providedCompile 'org.apache.spark:spark-core_2.10:1.6.1'
compile 'com.github.spullara.cli-parser:cli-parser:1.1'
testCompile group: 'junit', name: 'junit', version: '4.11'
}
sourceSets.main.compileClasspath += configurations.providedCompile
sourceSets.test.compileClasspath += configurations.providedCompile
sourceSets.test.runtimeClasspath += configurations.providedCompile
jar {
dependsOn configurations.runtime
zip64 true
from {
(configurations.compile).collect {
it.isDirectory() ? it : zipTree(it)
}
} {
exclude "META-INF/license"
exclude "META-INF/license/*"
exclude "META-INF/LICENSE*"
exclude "META-INF/*.DSA"
exclude "META-INF/*.RSA"
}
}
然后你可以在你的活动或片段中使用这个jave文件发送json并收到如下所示的响应：
./gradlew clean --debug你可以收到json：
21:11:27.805 [DEBUG] [org.apache.http.impl.conn.DefaultHttpClientConnectionOperator] Connecting to repo1.maven.org/151.101.24.209:443
21:11:27.805 [DEBUG] [org.apache.http.conn.ssl.SSLConnectionSocketFactory] Connecting socket to repo1.maven.org/151.101.24.209:443 with timeout 0
21:11:27.930 [DEBUG] [org.gradle.api.internal.artifacts.repositories.resolver.DefaultExternalResourceArtifactResolver] Loading file:/Users/user/.m2/repository/com/github/spullara/cli-parser/cli-parser/1.1/cli-parser-1.1.pom
21:11:27.931 [DEBUG] [org.gradle.api.internal.artifacts.repositories.resolver.DefaultExternalResourceArtifactResolver] Loading file:/Users/user/.m2/repository/com/github/spullara/cli-parser/cli-parser/1.1/cli-parser-1.1.jar
21:11:27.931 [DEBUG] [org.gradle.api.internal.artifacts.repositories.resolver.ExternalResourceResolver] No meta-data file or artifact found for module 'com.github.spullara.cli-parser:cli-parser:1.1' in repository 'MavenLocal'.
21:11:27.943 [DEBUG] [org.gradle.api.internal.artifacts.ivyservice.resolveengine.oldresult.TransientConfigurationResultsBuilder] Flushing resolved configuration data in Binary store in /private/var/folders/tb/j1t6f2sd4yvf6tyhtj_81tkr0000gn/T/gradle3280928141968750531.bin. Wrote root com.test:project:1.0:compile.
21:11:27.974 [ERROR] [org.gradle.BuildExceptionReporter]
21:11:27.974 [ERROR] [org.gradle.BuildExceptionReporter] FAILURE: Build failed with an exception.
21:11:27.974 [ERROR] [org.gradle.BuildExceptionReporter]
21:11:27.974 [ERROR] [org.gradle.BuildExceptionReporter] * Where:
21:11:27.974 [ERROR] [org.gradle.BuildExceptionReporter] Build file '/Users/user/workspace/project/build.gradle' line: 38
21:11:27.975 [ERROR] [org.gradle.BuildExceptionReporter]
21:11:27.975 [ERROR] [org.gradle.BuildExceptionReporter] * What went wrong:
21:11:27.975 [ERROR] [org.gradle.BuildExceptionReporter] Could not resolve all dependencies for configuration ':compile'.
21:11:27.975 [ERROR] [org.gradle.BuildExceptionReporter] > Could not resolve com.opencsv:opencsv:3.8.
21:11:27.975 [ERROR] [org.gradle.BuildExceptionReporter] Required by:
21:11:27.975 [ERROR] [org.gradle.BuildExceptionReporter] com.test:project:1.0
21:11:27.975 [ERROR] [org.gradle.BuildExceptionReporter] > Could not resolve com.opencsv:opencsv:3.8.
21:11:27.975 [ERROR] [org.gradle.BuildExceptionReporter] > java.lang.ExceptionInInitializerError (no error message)
21:11:27.976 [ERROR] [org.gradle.BuildExceptionReporter] > Could not resolve com.github.spullara.cli-parser:cli-parser:1.1.
21:11:27.976 [ERROR] [org.gradle.BuildExceptionReporter] Required by:
21:11:27.976 [ERROR] [org.gradle.BuildExceptionReporter] com.test:project:1.0
21:11:27.976 [ERROR] [org.gradle.BuildExceptionReporter] > Could not resolve com.github.spullara.cli-parser:cli-parser:1.1.
21:11:27.976 [ERROR] [org.gradle.BuildExceptionReporter] > Could not initialize class javax.crypto.JceSecurityManager
21:11:27.976 [ERROR] [org.gradle.BuildExceptionReporter]
21:11:27.977 [ERROR] [org.gradle.BuildExceptionReporter] * Try:
21:11:27.977 [ERROR] [org.gradle.BuildExceptionReporter] Run with --stacktrace option to get the stack trace.
21:11:27.978 [LIFECYCLE] [org.gradle.BuildResultLogger]
21:11:27.978 [LIFECYCLE] [org.gradle.BuildResultLogger] BUILD FAILED
21:11:27.978 [LIFECYCLE] [org.gradle.BuildResultLogger]
21:11:27.978 [LIFECYCLE] [org.gradle.BuildResultLogger] Total time: 7.244 secs
21:11:27.980 [DEBUG] [org.gradle.api.internal.artifacts.ivyservice.ivyresolve.memcache.InMemoryCachedRepositoryFactory] In-memory dependency metadata cache closed. Repos cached: 2, cache instances: 2, modules served from cache: 0, artifacts: 0
你可以获得标题：
var c = d3.line()
.interpolate("monotone")
.x(function(d) { return x(d.date); })
.y(function(d) { return y(d.close); });
VolleySingleton班
public class AppJSONObjectRequest extends JsonObjectRequest{
private Response.Listener<JSONObject> listener;
private Map<String, String> headers;
public AppJSONObjectRequest(int method, String url, JSONObject jsonObject, Response.Listener<JSONObject> reponseListener, Response.ErrorListener errorListener, Map<String, String> headers) {
super(method, url, jsonObject, reponseListener, errorListener);
this.headers = headers;
this.listener = reponseListener;
}
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
return Response.success(new JSONObject(jsonString),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
@Override
protected void deliverResponse(JSONObject response) {
listener.onResponse(response);
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers;
}
}
只是你可以实现上面的示例......然后希望你能得到你想要的东西。它可能是复制粘贴代码，但它足以覆盖你的问题。