我正试图在gae上使用谷歌云端点。 我正在尝试整合它maven。 我发现这个maven插件可以这样做： http://code.google.com/p/maven-endpoint-plugin/
我能够定义我的api并生成api。 我可以在应用引擎上部署时调用我的api。但是当我尝试将其称为localy进行调试时，我得到以下异常：
javax.servlet.ServletContext log: unavailable
java.lang.IllegalArgumentException: '' not a valid path variable name
at com.google.api.server.spi.tools.devserver.ParameterizedPath.validateName(ParameterizedPath.java:96)
at com.google.api.server.spi.tools.devserver.ParameterizedPath.getVariableNames(ParameterizedPath.java:68)
at com.google.api.server.spi.tools.devserver.ParameterizedPath.<init>(ParameterizedPath.java:53)
at com.google.api.server.spi.tools.devserver.RestMethodDispatcher.saveRestMethod(RestMethodDispatcher.java:37)
at com.google.api.server.spi.tools.devserver.RestMethodDispatcher.<init>(RestMethodDispatcher.java:30)
at com.google.api.server.spi.tools.devserver.RestApiServlet.loadApiConfigs(RestApiServlet.java:120)
at com.google.api.server.spi.tools.devserver.ApiServlet.init(ApiServlet.java:65)
at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440)
at org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:61)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:409)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
mars 07, 2013 2:53:38 PM com.google.apphosting.utils.jetty.JettyLogger warn
Avertissement: /_ah/api/project/v1/addProject
java.lang.IllegalArgumentException: '' not a valid path variable name
at com.google.api.server.spi.tools.devserver.ParameterizedPath.validateName(ParameterizedPath.java:96)
at com.google.api.server.spi.tools.devserver.ParameterizedPath.getVariableNames(ParameterizedPath.java:68)
at com.google.api.server.spi.tools.devserver.ParameterizedPath.<init>(ParameterizedPath.java:53)
at com.google.api.server.spi.tools.devserver.RestMethodDispatcher.saveRestMethod(RestMethodDispatcher.java:37)
at com.google.api.server.spi.tools.devserver.RestMethodDispatcher.<init>(RestMethodDispatcher.java:30)
at com.google.api.server.spi.tools.devserver.RestApiServlet.loadApiConfigs(RestApiServlet.java:120)
at com.google.api.server.spi.tools.devserver.ApiServlet.init(ApiServlet.java:65)
at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440)
at org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:61)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:409)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
而且我也无法生成客户端库（执行mvn编译或使用google eclipse插件）
是否有人成功将Google云端点与maven集成： - 生成客户端库 - 在当地进行测试 - 部署到app引擎并使其工作（这是唯一的一步，我设法开始工作）
这是pom.xml文件：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<groupId>com.kubity</groupId>
<artifactId>Kubity</artifactId>
<properties>
<appengine.app.id>!!!!</appengine.app.id>
<appengine.app.version>!!!!</appengine.app.version>
<appengine.target.version>1.7.5</appengine.target.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<endpoint.service.classnames>com.kubity.business.project.api.ProjectEndpoint</endpoint.service.classnames>
<!-- <webappDirectory>${project.build.directory}/${project.build.finalName}</webappDirectory> -->
</properties>
<repositories>
<repository>
<id>objectify-appengine</id>
<name>Objectify Maven Repository</name>
<url>http://objectify-appengine.googlecode.com/svn/maven</url>
</repository>
<repository>
<id>cbreleases</id>
<url>https://repository-michael.forge.cloudbees.com/release</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>cbreleases</id>
<url>https://repository-michael.forge.cloudbees.com/release</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
<dependencies>
<!-- Compile/runtime dependencies -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.googlecode.objectify</groupId>
<artifactId>objectify</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0.2</version>
</dependency>
<!-- using jersey to test the upload web service, this might change in
the future -->
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.17</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>1.17</version>
</dependency>
<dependency>
<groupId>com.sun.jersey.contribs</groupId>
<artifactId>jersey-multipart</artifactId>
<version>1.17</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-servlet</artifactId>
<version>1.17</version>
</dependency>
<dependency>
<groupId>com.google.api</groupId>
<artifactId>appengine-local-endpoints</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.google.api</groupId>
<artifactId>appengine-endpoints</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.7</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.2.2</version>
</dependency>
<!-- Test Dependencies -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-testing</artifactId>
<version>${appengine.target.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-stubs</artifactId>
<version>${appengine.target.version}</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<version>2.5.1</version>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<archiveClasses>true</archiveClasses>
<webResources>
<!-- in order to interpolate version from pom into appengine-web.xml -->
<resource>
<directory>${basedir}/src/main/webapp/WEB-INF</directory>
<filtering>true</filtering>
<targetPath>WEB-INF</targetPath>
</resource>
</webResources>
<nonFilteredFileExtensions>
<nonFilteredFileExtension>p12</nonFilteredFileExtension>
</nonFilteredFileExtensions>
</configuration>
</plugin>
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>${appengine.target.version}</version>
<!--<configuration>
<jvmFlags>
<jvmFlag>-Xdebug</jvmFlag>
<jvmFlag>-Xrunjdwp:transport=dt_socket,address=1044,server=y,suspend=y
</jvmFlag>
</jvmFlags>
<disableUpdateCheck>true</disableUpdateCheck>
</configuration-->
</plugin>
<plugin>
<groupId>com.mic.endpoint.api</groupId>
<artifactId>endpoint-maven-plugin</artifactId>
<version>0.0.2-SNAPSHOT</version>
<!-- <version>0.0.1</version> -->
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<configuration>
<applicationId>${appengine.app.id}</applicationId>
<serviceClassNames>${endpoint.service.classnames}</serviceClassNames>
<!-- <apiOutputDirectory>${webappDirectory}/WEB-INF</apiOutputDirectory>
<classPath>${webappDirectory}/WEB-INF/classes</classPath> -->
</configuration>
<dependencies>
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0.2</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
答案 0 :(得分：1)
我终于能够在我的本地端点服务器上运行我的端点。该例外与maven插件无关。 我没有正确使用enpoint注释，这就是为什么我一直有这个例外。 我无法弄清楚它为何在gae生产服务器上工作。 这是错误的： 我写了
public void deleteProject(@Named Long projectId) {
projectManager.deleteProject(projectId);
}
而不是写
public void deleteProject(@Named("id") Long projectId) {
projectManager.deleteProject(projectId);
}
我忘了为某些方法定义“@Named”注释的name参数。
答案 1 :(得分：1)
如果你依赖 com.google.appengine AppEngine上的端点 1.7.7 com.google.appengine 应用服务引擎的API-1.0-SDK 1.7.7 的javax.servlet servlet的API 2.5 提供
您使用的是Google App Engine Maven插件1.7.7：
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>1.7.7</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>endpoints_get_discovery_doc</goal>
<!--goal>endpoints_get_client_lib</goal-->
</goals>
</execution>
</executions>
<configuration>
<serviceClassNames>YOURENDPOINTSCLASSES(comma separated)</serviceClassNames>
</configuration>
</plugin>
你很高兴有这两个目标： enpoints_get_discovery_doc 和 endpoints_get_client_lib
答案 2 :(得分：0)
你能发布你的pom.xml吗？
事先..你不能用maven插件创建客户端库。它只是创建你的api文件。您必须使用SDK附带的端点命令工具在外部创建它们
答案 3 :(得分：0)
添加此
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-endpoints</artifactId>
<version>1.7.6</version>
<scope>runtime</scope>
</dependency>
你的maven依赖（当然我使用的是1.7.6版本）