无法从 Genymotion 模拟器连接到本地 gae 端点
Can't connect to local gae endpoints from Genymotion emulator
这是一个简单的 helloworld 项目，使用从 MyBean 和 MyEndpoint 类 生成的端点，这些端点默认为 Endpoints module。我使用的模拟器是 Genymotion，我通过 /10.0.2.2 ip 连接到它。当我在网络浏览器中本地 "localhost:8080" 访问端点服务器时它工作正常但是当我 run/debug 它在 AndroidStudio[= 中使用模拟器时39=] 我得到这个超时异常：
-3571/com.serjsmor.anotherbackend W/System.err﹕ java.net.SocketTimeoutException: failed to connect to /10.0.2.2 (port 8080) after 20000ms
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at libcore.io.IoBridge.connectErrno(IoBridge.java:169)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at libcore.io.IoBridge.connect(IoBridge.java:122)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:183)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:456)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at java.net.Socket.connect(Socket.java:882)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.Platform.connectSocket(Platform.java:139)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.Connection.connect(Connection.java:148)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:276)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:106)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:208)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.getOutputStream(DelegatingHttpsURLConnection.java:218)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:25)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:77)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:965)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:410)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:343)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:460)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.serjsmor.anotherbackend.MainActivity.run(MainActivity.java:25)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at java.lang.Thread.run(Thread.java:818)
客户端模块：
TestEndpoint.java
public class TestEndpoint {
final MyApi taskApiService;
// Constructor
public TestEndpoint () {
MyApi.Builder builder = new MyApi.Builder(AndroidHttp.newCompatibleTransport(),
new AndroidJsonFactory(), null)
.setRootUrl("https://10.0.2.2:8080/_ah/api/")
.setGoogleClientRequestInitializer( new GoogleClientRequestInitializer() {
@Override
public void initialize(AbstractGoogleClientRequest<?> abstractGoogleClientRequest)
throws IOException {
abstractGoogleClientRequest.setDisableGZipContent(true);
}
}
);
taskApiService = builder.build();
} // end of constructor, other methods to follow in this class...
}
实际代码为运行：
MainActivity.java
new Thread( new Runnable() {
@Override
public void run() {
TestEndpoint test = new TestEndpoint();
try {
test.taskApiService.sayHi("sdad").execute();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
后端模块：
MyBean.java
public class MyBean {
private String myData;
public String getData() {
return myData;
}
public void setData(String data) {
myData = data;
}
}
MyEndpoint.java
@Api(name = "myApi", version = "v1", namespace = @ApiNamespace(ownerDomain = "backend.anotherbackend.serjsmor.com", ownerName = "backend.anotherbackend.serjsmor.com", packagePath = ""))
public class MyEndpoint {
/**
* A simple endpoint method that takes a name and says Hi back
*/
@ApiMethod(name = "sayHi")
public MyBean sayHi(@Named("name") String name) {
MyBean response = new MyBean();
response.setData("Hi, " + name);
return response;
}
模块：应用程序build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.serjsmor.anotherbackend"
minSdkVersion 15
targetSdkVersion 21
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:21.0.3'
compile project(path: ':backend', configuration: 'android-endpoints')
}
模块：后端build.gradle
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.google.appengine:gradle-appengine-plugin:1.9.14'
}
}
repositories {
jcenter();
}
apply plugin: 'java'
apply plugin: 'war'
apply plugin: 'appengine'
sourceCompatibility = JavaVersion.VERSION_1_7
targetCompatibility = JavaVersion.VERSION_1_7
dependencies {
appengineSdk 'com.google.appengine:appengine-java-sdk:1.9.14'
compile 'com.google.appengine:appengine-endpoints:1.9.14'
compile 'com.google.appengine:appengine-endpoints-deps:1.9.14'
compile 'javax.servlet:servlet-api:2.5'
}
appengine {
downloadSdk = true
appcfg {
oauth2 = true
}
endpoints {
getClientLibsOnBuild = true
getDiscoveryDocsOnBuild = true
}
}
10.0.2.2 指的是您的 Genymotion 模拟器设备，它不是您的开发应用引擎服务器 运行。
您的开发应用程序引擎服务器应该在您的本地台式计算机上 运行，具有典型的 IP 地址，例如 192.168.1.100。所以改为这样做：
.setRootUrl("http://192.168.1.100:8080/_ah/api/")
使用 cmd.exe window 中的 'ipconfig' 命令从 windows 中找出您的 IP 地址。我不知道其他 OS。请注意，您将在本地使用 'http'，而不是 'https'（用于访问 appspot.com 上的应用程序引擎）
你所有的其他代码似乎都是正确的！
这是一个简单的 helloworld 项目，使用从 MyBean 和 MyEndpoint 类 生成的端点，这些端点默认为 Endpoints module。我使用的模拟器是 Genymotion，我通过 /10.0.2.2 ip 连接到它。当我在网络浏览器中本地 "localhost:8080" 访问端点服务器时它工作正常但是当我 run/debug 它在 AndroidStudio[= 中使用模拟器时39=] 我得到这个超时异常：
-3571/com.serjsmor.anotherbackend W/System.err﹕ java.net.SocketTimeoutException: failed to connect to /10.0.2.2 (port 8080) after 20000ms
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at libcore.io.IoBridge.connectErrno(IoBridge.java:169)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at libcore.io.IoBridge.connect(IoBridge.java:122)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:183)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:456)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at java.net.Socket.connect(Socket.java:882)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.Platform.connectSocket(Platform.java:139)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.Connection.connect(Connection.java:148)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:276)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:106)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:208)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.getOutputStream(DelegatingHttpsURLConnection.java:218)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:25)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:77)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:965)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:410)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:343)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:460)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at com.serjsmor.anotherbackend.MainActivity.run(MainActivity.java:25)
03-03 11:44:30.310 3548-3571/com.serjsmor.anotherbackend W/System.err﹕ at java.lang.Thread.run(Thread.java:818)
客户端模块： TestEndpoint.java
public class TestEndpoint {
final MyApi taskApiService;
// Constructor
public TestEndpoint () {
MyApi.Builder builder = new MyApi.Builder(AndroidHttp.newCompatibleTransport(),
new AndroidJsonFactory(), null)
.setRootUrl("https://10.0.2.2:8080/_ah/api/")
.setGoogleClientRequestInitializer( new GoogleClientRequestInitializer() {
@Override
public void initialize(AbstractGoogleClientRequest<?> abstractGoogleClientRequest)
throws IOException {
abstractGoogleClientRequest.setDisableGZipContent(true);
}
}
);
taskApiService = builder.build();
} // end of constructor, other methods to follow in this class...
}
实际代码为运行： MainActivity.java
new Thread( new Runnable() {
@Override
public void run() {
TestEndpoint test = new TestEndpoint();
try {
test.taskApiService.sayHi("sdad").execute();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
后端模块： MyBean.java
public class MyBean {
private String myData;
public String getData() {
return myData;
}
public void setData(String data) {
myData = data;
}
}
MyEndpoint.java
@Api(name = "myApi", version = "v1", namespace = @ApiNamespace(ownerDomain = "backend.anotherbackend.serjsmor.com", ownerName = "backend.anotherbackend.serjsmor.com", packagePath = ""))
public class MyEndpoint {
/**
* A simple endpoint method that takes a name and says Hi back
*/
@ApiMethod(name = "sayHi")
public MyBean sayHi(@Named("name") String name) {
MyBean response = new MyBean();
response.setData("Hi, " + name);
return response;
}
模块：应用程序build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.serjsmor.anotherbackend"
minSdkVersion 15
targetSdkVersion 21
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:21.0.3'
compile project(path: ':backend', configuration: 'android-endpoints')
}
模块：后端build.gradle
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.google.appengine:gradle-appengine-plugin:1.9.14'
}
}
repositories {
jcenter();
}
apply plugin: 'java'
apply plugin: 'war'
apply plugin: 'appengine'
sourceCompatibility = JavaVersion.VERSION_1_7
targetCompatibility = JavaVersion.VERSION_1_7
dependencies {
appengineSdk 'com.google.appengine:appengine-java-sdk:1.9.14'
compile 'com.google.appengine:appengine-endpoints:1.9.14'
compile 'com.google.appengine:appengine-endpoints-deps:1.9.14'
compile 'javax.servlet:servlet-api:2.5'
}
appengine {
downloadSdk = true
appcfg {
oauth2 = true
}
endpoints {
getClientLibsOnBuild = true
getDiscoveryDocsOnBuild = true
}
}
10.0.2.2 指的是您的 Genymotion 模拟器设备，它不是您的开发应用引擎服务器 运行。 您的开发应用程序引擎服务器应该在您的本地台式计算机上 运行，具有典型的 IP 地址，例如 192.168.1.100。所以改为这样做：
.setRootUrl("http://192.168.1.100:8080/_ah/api/")
使用 cmd.exe window 中的 'ipconfig' 命令从 windows 中找出您的 IP 地址。我不知道其他 OS。请注意，您将在本地使用 'http'，而不是 'https'（用于访问 appspot.com 上的应用程序引擎）
你所有的其他代码似乎都是正确的！