java.lang.NoSuchMethodError org.apache.http.client.utils.URLEncodedUtils.encPath [英] java.lang.NoSuchMethodError org.apache.http.client.utils.URLEncodedUtils.encPath
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问题描述
我正在尝试使用 Apache HTTP 客户端库在 Android 中发出 GET 请求，但是当我尝试发出请求时，我得到了以下堆栈跟踪.
I'm trying to make a GET request in Android using Apache HTTP Client library but I'm getting the following stacktrace back when I try to make a request.
06-17 16:19:58.891 10605-10605/com.myapp.test.android E/SELinux﹕ selinux_android_seapp_context_reload: seapp_contexts file is loaded from /data/security/spota/seapp_contexts
06-17 16:19:58.891 10605-10605/com.myapp.test.android D/dalvikvm﹕ Late-enabling CheckJNI
06-17 16:19:59.001 10605-10605/com.myapp.test.android I/dalvikvm﹕ Could not find method org.apache.http.client.utils.URLEncodedUtils.encPath, referenced from method org.apache.http.client.utils.URIBuilder.encodePath
06-17 16:19:59.001 10605-10605/com.myapp.test.android W/dalvikvm﹕ VFY: unable to resolve static method 2455: Lorg/apache/http/client/utils/URLEncodedUtils;.encPath (Ljava/lang/String;Ljava/nio/charset/Charset;)Ljava/lang/String;
06-17 16:19:59.001 10605-10605/com.myapp.test.android D/dalvikvm﹕ VFY: replacing opcode 0x71 at 0x0002
06-17 16:19:59.001 10605-10605/com.myapp.test.android I/dalvikvm﹕ Could not find method org.apache.http.client.utils.URLEncodedUtils.encUric, referenced from method org.apache.http.client.utils.URIBuilder.encodeUric
06-17 16:19:59.001 10605-10605/com.myapp.test.android W/dalvikvm﹕ VFY: unable to resolve static method 2456: Lorg/apache/http/client/utils/URLEncodedUtils;.encUric (Ljava/lang/String;Ljava/nio/charset/Charset;)Ljava/lang/String;
06-17 16:19:59.001 10605-10605/com.myapp.test.android D/dalvikvm﹕ VFY: replacing opcode 0x71 at 0x0002
06-17 16:19:59.001 10605-10605/com.myapp.test.android I/dalvikvm﹕ Could not find method org.apache.http.client.utils.URLEncodedUtils.format, referenced from method org.apache.http.client.utils.URIBuilder.encodeUrlForm
06-17 16:19:59.001 10605-10605/com.myapp.test.android W/dalvikvm﹕ VFY: unable to resolve static method 2461: Lorg/apache/http/client/utils/URLEncodedUtils;.format (Ljava/lang/Iterable;Ljava/nio/charset/Charset;)Ljava/lang/String;
06-17 16:19:59.001 10605-10605/com.myapp.test.android D/dalvikvm﹕ VFY: replacing opcode 0x71 at 0x0002
06-17 16:19:59.001 10605-10605/com.myapp.test.android I/dalvikvm﹕ Could not find method org.apache.http.client.utils.URLEncodedUtils.encUserInfo, referenced from method org.apache.http.client.utils.URIBuilder.encodeUserInfo
06-17 16:19:59.001 10605-10605/com.myapp.test.android W/dalvikvm﹕ VFY: unable to resolve static method 2457: Lorg/apache/http/client/utils/URLEncodedUtils;.encUserInfo (Ljava/lang/String;Ljava/nio/charset/Charset;)Ljava/lang/String;
06-17 16:19:59.001 10605-10605/com.myapp.test.android D/dalvikvm﹕ VFY: replacing opcode 0x71 at 0x0002
06-17 16:19:59.001 10605-10605/com.myapp.test.android I/dalvikvm﹕ Could not find method org.apache.http.client.utils.URLEncodedUtils.parse, referenced from method org.apache.http.client.utils.URIBuilder.parseQuery
06-17 16:19:59.001 10605-10605/com.myapp.test.android W/dalvikvm﹕ VFY: unable to resolve static method 2465: Lorg/apache/http/client/utils/URLEncodedUtils;.parse (Ljava/lang/String;Ljava/nio/charset/Charset;)Ljava/util/List;
06-17 16:19:59.001 10605-10605/com.myapp.test.android D/dalvikvm﹕ VFY: replacing opcode 0x71 at 0x0008
06-17 16:19:59.001 10605-10605/com.myapp.test.android W/dalvikvm﹕ Exception Ljava/lang/NoSuchMethodError; thrown while initializing Lcom/myapp/test/android/IHeart;
06-17 16:19:59.001 10605-10605/com.myapp.test.android D/AndroidRuntime﹕ Shutting down VM
06-17 16:19:59.001 10605-10605/com.myapp.test.android W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41849898)
06-17 16:19:59.001 10605-10605/com.myapp.test.android E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NoSuchMethodError: org.apache.http.client.utils.URLEncodedUtils.encPath
at org.apache.http.client.utils.URIBuilder.encodePath(URIBuilder.java:175)
at org.apache.http.client.utils.URIBuilder.buildString(URIBuilder.java:136)
at org.apache.http.client.utils.URIBuilder.build(URIBuilder.java:104)
at com.myapp.test.android.IHeart.makeGetRequest(IHeart.java:129)
at com.myapp.test.android.IHeart.getMarketId(IHeart.java:119)
at com.myapp.test.android.IHeart.setMarketId(IHeart.java:70)
at com.myapp.test.android.IHeart.initializeIHeart(IHeart.java:60)
at com.myapp.test.android.IHeart.<init>(IHeart.java:50)
at com.myapp.test.android.IHeart.<clinit>(IHeart.java:35)
at com.myapp.test.android.MainActivity.onCreate(MainActivity.java:21)
at android.app.Activity.performCreate(Activity.java:5369)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2348)
at android.app.ActivityThread.access$700(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5414)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
at dalvik.system.NativeStart.main(Native Method)
因此，当应用程序尝试在我的代码中创建 URI 对象时，它看起来像是崩溃了.特别是，当它尝试解析 .setPath(path) 一段代码时.
So it looks like the app crashes when it tries to create a URI object in my code. In particular, when it tries to parse the .setPath(path) piece of code.
// Make the GET request and get the response JSON.
return makeGetRequest(
SCHEME,
HOST,
PATH_MARKET,
params
);
...
private JSONObject makeGetRequest(String scheme, String host, String path, List<NameValuePair> params) {
try {
URI uri = new URIBuilder()
.setScheme(scheme)
.setHost(host)
.setPath(path) // <-- Where the crash is happening!
.setParameters(params)
.build();
这是我的代码的样子.
MainActivity.java
公共类 MainActivity 扩展 Activity {
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
IHeart.getInstance();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(com.myapp.test.android.R.menu.main, menu);
return true;
}
}
IHeart.java
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.os.AsyncTask;
import android.util.Log;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
public class IHeart {
private static final String TAG = IHeart.class.getSimpleName();
private static IHeart instance = new IHeart();
private static final String SCHEME = "https";
private static final String HOST = "api2.iheart.com";
private static final String PATH_MARKET = "/api/v2/content/markets";
private long mMarketId;
public static IHeart getInstance() {
return instance;
}
private IHeart() {
initializeIHeart();
}
private void initializeIHeart() {
setMarketId();
}
private void setMarketId() {
try {
JSONObject response = getMarketId("40.7127837", "-74.005941");
if (response != null) {
final String KEY_HITS = "hits";
final String KEY_MARKET_ID = "marketId";
if (response.isNull(KEY_HITS)) {
Log.e(TAG, KEY_HITS + " key doesn't exist in response JSON.");
} else {
JSONArray hitsArray = response.getJSONArray(KEY_HITS);
if (hitsArray == null || hitsArray.length() == 0 || hitsArray.isNull(0)) {
Log.d(TAG, "Hits array is null/empty.");
} else {
JSONObject firstHitsObject = hitsArray.getJSONObject(0);
if (firstHitsObject == null || firstHitsObject.isNull(KEY_MARKET_ID)) {
Log.d(TAG, "Market ID value is null/empty/missing in JSON.");
} else {
mMarketId = firstHitsObject.getInt(KEY_MARKET_ID);
Log.d(TAG, "Market ID = " + mMarketId);
}
}
}
} else {
Log.e(TAG, "Response JSON was null.");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
private JSONObject getMarketId(String latitude, String longitude) throws JSONException {
// Define the params
ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("limit", "10"));
params.add(new BasicNameValuePair("lat", latitude));
params.add(new BasicNameValuePair("lng", longitude));
// Make the GET request and get the response JSON.
return makeGetRequest(
SCHEME,
HOST,
PATH_MARKET,
params
);
}
private JSONObject makeGetRequest(String scheme, String host, String path, List<NameValuePair> params) {
try {
URI uri = new URIBuilder()
.setScheme(scheme)
.setHost(host)
.setPath(path)
.setParameters(params)
.build();
Log.d(TAG, "URI = " + uri);
// Make asyn REST call and return resulting in JSON.
return new getRequestTask().execute(uri).get();
} catch (URISyntaxException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
return null;
}
private class getRequestTask extends AsyncTask<URI, Void, JSONObject> {
@Override
protected JSONObject doInBackground(URI... params) {
for (URI uri : params) {
try {
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpGet httpGet = new HttpGet(uri);
CloseableHttpResponse response = httpClient.execute(httpGet);
// Read the response
HttpEntity httpEntity = response.getEntity();
// Create and return JSONObject
if (httpEntity != null) {
String json = EntityUtils.toString(httpEntity);
return new JSONObject(json);
}
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
}
return null;
}
}
}
我创建了另一个项目，但这次是作为 Java 应用程序，并且能够很好地执行此代码.特别是，Java 应用程序在遇到以下代码时不会像在 Android 应用程序中那样崩溃.
I've create another project, but this time as a Java application, and was able to execute this code just fine. In particular, the Java application didn't crash when it hit the following bit of code like it did in the Android app.
// Make the GET request and get the response JSON.
return makeGetRequest(
SCHEME,
HOST,
PATH_MARKET,
params
);
当我通过 Android 项目构建时，我也没有遇到编译错误.我实际上能够运行该应用程序，但它立即崩溃.
I'm also getting no compilation errors when I build by Android project. I'm actually able to run the app but it crashes right away.
任何指针将不胜感激.
如果有帮助，这是我对 Apache HTTP 客户端的 Maven 依赖:
If it helps, here's my Maven dependency for the Apache HTTP Client:
pom.xml
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.3.4</version>
</dependency>
推荐答案
Android 在其 SDK 中包含过时的 Apache HttpClient 实现如果您添加较新的 Apache Http Client 会导致冲突
Android include outdated Apache HttpClient implementation in their SDK which make it conflict if you add newer Apache Http Client
您应该使用 HttpClient for Android
Google Android 1.0 发布了 Apache 的预测试版快照客户端.与第一个 Android 发布 Apache 相吻合HttpClient 4.0 API 不得不提前冻结，而许多接口和内部结构仍未完全确定.[...] Android 的 Apache HttpClient 4.3 端口旨在解决提供与 Google 兼容的官方版本安卓.
Google Android 1.0 was released with a pre-BETA snapshot of Apache HttpClient. To coincide with the first Android release Apache HttpClient 4.0 APIs had to be frozen prematurely, while many of interfaces and internal structures were still not fully worked out. [...] Apache HttpClient 4.3 port for Android is intended to remedy the situation by providing official releases compatible with Google Android.
使用这个gradle依赖配置:
Use this gradle dependency configuration:
dependencies {
/* ... */
compile 'org.apache.httpcomponents:httpclient-android:4.3.3'
}
我不是 maven 用户，但 maven 配置应该是这样的
I'm not a maven user, but maven configuration should be something like this
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient-android</artifactId>
<version>4.3.3</version>
</dependency>
您确实想使用 4.3.3，因为 4.3.4 的 android 端口尚不可用.
You really want to use 4.3.3 since android port of 4.3.4 is not available yet.
要调用 HTTP 方法，请稍微更改您的代码(注意 HttpGetHC4)
To call a HTTP method, slightly change your code (notice HttpGetHC4)
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpGetHC4 httpGet = new HttpGetHC4(url);
CloseableHttpResponse response = httpClient.execute(httpGet);
它使用了 URIBuilder 的不同实现，所以客户端代码不需要改变.
It use different implementation of URIBuilder so client code need not changed.
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