所以我想通过HttpPost发送图像，我发现了一个源代码就是这样做的。问题是它为我提供了FileBody的ClassNotFoundDef。我已经在Gradle文件中设置了依赖项，并将httpmime-4.4.jar导入libs文件夹。所以我不知道为什么我一直收到这个错误。
Exportar_BD_2.java
package com.example.gnr_p_v2;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.widget.EditText;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
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.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.util.EntityUtils;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.ProtocolException;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
/**
* Created by Diogo on 10/02/2015.
*/
public class Exportar_BD_2 extends Activity {
MultipartEntity reqEntity;
EditText ed;
String nome_fich;
@SuppressLint("SimpleDateFormat")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.base_de_dados);
ed = (EditText) findViewById(R.id.edit);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
//sendFile("https://montemor.primelayer.pt/ws/inteste.php");
try {
trustAllHosts();
faz_ligacao();
send_image();
} catch (KeyManagementException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
public void send_image(){
Bundle extras = getIntent().getExtras();
String nome_screen = extras.getString("screen");
File file = new File(nome_screen);
FileBody fileBody = new FileBody(file);
reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
reqEntity.addPart("file", fileBody);
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
HttpsURLConnection url = null;
try {
url = (HttpsURLConnection) new URL("https://montemor.primelayer.pt/ws/sendpic.php").openConnection();
url.setHostnameVerifier(DO_NOT_VERIFY);
} catch (IOException e) {
e.printStackTrace();
}
System.err.println("Abri conexão!");
HttpClient httpclient = new DefaultHttpClient();
String encoding = new String(
org.apache.commons.codec.binary.Base64.encodeBase64
(org.apache.commons.codec.binary.StringUtils.getBytesUtf8("montemor:mx89wen3%j3h2bjd098@"))
);
HttpPost httppost = new HttpPost("https://montemor.primelayer.pt/ws/sendpic.php");
httppost.setHeader("Authorization", "Basic " + encoding);
httppost.setEntity(reqEntity);
HttpResponse response = null;
try {
response = httpclient.execute(httppost);
} catch (IOException e) {
e.printStackTrace();
}
HttpEntity resEntity = response.getEntity();
if (resEntity != null) {
String responseStr = null;
try {
responseStr = EntityUtils.toString(resEntity).trim();
} catch (IOException e) {
e.printStackTrace();
}
Log.v("TAG", "Response: " + responseStr);
// you can add an if statement here and do other actions based on the response
}
return null;
}
}.execute();
}
public void faz_ligacao() throws KeyManagementException, NoSuchAlgorithmException {
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
HttpsURLConnection url = null;
try {
url = (HttpsURLConnection) new URL("https://montemor.primelayer.pt/ws/inserirocorrencia.php").openConnection();
url.setHostnameVerifier(DO_NOT_VERIFY);
} catch (IOException e) {
e.printStackTrace();
}
System.err.println("Abri conexão!");
HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters, 100000);
HttpConnectionParams.setSoTimeout(httpParameters, 100000);
HttpProtocolParams.setVersion(httpParameters, HttpVersion.HTTP_1_1);
//Thread safe in case various AsyncTasks try to access it concurrently
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
schemeRegistry.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443));
ClientConnectionManager cm = new ThreadSafeClientConnManager(httpParameters, schemeRegistry);
HttpClient httpclient = new DefaultHttpClient(cm, httpParameters);
String encoding = new String(
org.apache.commons.codec.binary.Base64.encodeBase64
(org.apache.commons.codec.binary.StringUtils.getBytesUtf8("montemor:mx89wen3%j3h2bjd098@"))
);
Intent intent = getIntent();
Bundle extras = intent.getExtras();
ArrayList<String> lista_form_campo = extras.getStringArrayList("array_campo");
ArrayList<String> lista_form_valor = extras.getStringArrayList("array_valor");
HttpPost httppost = new HttpPost("https://montemor.primelayer.pt/ws/inserirocorrencia.php");
//https://montemor.primelayer.pt/ws/inteste.php?id=22&desig=teste2
//httppost.setHeader("User-Agent", "MySuperUserAgent");
httppost.setHeader("Authorization", "Basic " + encoding);
List<NameValuePair> nameValuePairs = new ArrayList<>();
int precorre = 0;
for (; precorre < lista_form_campo.size(); precorre++) {
System.err.println(lista_form_campo.get(precorre) + " " + lista_form_valor.get(precorre));
nameValuePairs.add(new BasicNameValuePair(lista_form_campo.get(precorre).toString(), lista_form_valor.get(precorre).toString()));
}
try {
UrlEncodedFormEntity url_e = new UrlEncodedFormEntity(nameValuePairs);
System.err.println("URL ENCODE: " + url_e);
httppost.setEntity(url_e);
System.err.println("Request Line: " + httppost.getRequestLine());
System.err.println("Method: " + httppost.getMethod());
System.err.println("Request Line: " + httppost.getParams());
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
url.setDoOutput(true);
url.setInstanceFollowRedirects(false);
try {
url.setRequestMethod("POST");
} catch (ProtocolException e) {
e.printStackTrace();
}
url.setRequestProperty("Content-Type", "text/plain");
url.setRequestProperty("charset", "utf-8");
try {
url.connect();
System.err.println("Conectei e bem!");
} catch (IOException e) {
e.printStackTrace();
System.err.println("Não conectei");
}
try {
HttpResponse resp = httpclient.execute(httppost);
System.err.println(httppost.getURI());
System.err.println("" + resp.getStatusLine().getStatusCode());
System.err.println("Entity: " + resp.getEntity());
System.err.println("Executei o Post ");
} catch (IOException e) {
System.err.println("Não executei o Post");
e.printStackTrace();
}
return null;
}
}.execute();
}
// always verify the host - dont check for certificate
final static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
public boolean verify(String hostname, SSLSession session) {
return true;
}
};
/**
* Trust every server - dont check for any certificate
*/
private static void trustAllHosts() {
// Create a trust manager that does not validate certificate chains
TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[]{};
}
public void checkClientTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
}};
// Install the all-trusting trust manager
try {
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, trustAllCerts, new java.security.SecureRandom());
HttpsURLConnection
.setDefaultSSLSocketFactory(sc.getSocketFactory());
} catch (Exception e) {
e.printStackTrace();
}
}
}
的build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.example.gnr_p_v2"
minSdkVersion 15
targetSdkVersion 19
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
dependencies {
compile 'com.android.support:support-v4:19.0.0'
compile 'com.google.android.gms:play-services:5.0.89'
compile files('libs/google-play-services_lib.jar')
compile files('libs/postgresql-9.4-1200.jdbc4.jar')
compile files('libs/httpmime-4.4.jar')
compile files('libs/commons-codec-1.9.jar')
}
错误日志。
02-23 19:23:52.569 11173-11173/com.example.gnr_p_v2 E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.gnr_p_v2, PID: 11173
java.lang.NoClassDefFoundError: org.apache.http.entity.ContentType
at org.apache.http.entity.mime.content.FileBody.<init>(FileBody.java:89)
at com.example.gnr_p_v2.Exportar_BD_2.envia_imagens(Exportar_BD_2.java:94)
at com.example.gnr_p_v2.Exportar_BD_2.onCreate(Exportar_BD_2.java:80)
at android.app.Activity.performCreate(Activity.java:5473)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2292)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2386)
at android.app.ActivityThread.access$900(ActivityThread.java:169)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1277)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5476)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
at dalvik.system.NativeStart.main(Native Method)
我在网上看到的所有解决方案都是我像以前一样导入mime jar所以我不知道还能做什么。有什么想法吗？
答案 0 :(得分：0)
这是一个很多人面临的合法问题，我不知道为什么会被投票。无论如何我找到了解决方案。问题是AndroidStudio上有一个错误（我认为它只影响AndroidStudio）。
您可以在这里阅读更多内容：
Android Gradle plugin 0.7.0: "duplicate files during packaging of APK"