Getting NoSuchMethodException when migrating to endpoints framework version 2 - google-app-engine

Question

I am getting NoSuchMethod exception when I try to migrate existing endpoints version 1.o code to endpoints framework version 2.
I am using the guide in this url here
https://cloud.google.com/endpoints/docs/frameworks/java/migrating
but I keep getting this error message
java.lang.NoSuchMethodException: sampe-package-path.EndpointClassEndpoint.<init>()
at java.lang.Class.getConstructor0(Class.java:3082)
at java.lang.Class.newInstance(Class.java:412)
at com.google.api.server.spi.EndpointsServlet.createService(EndpointsServlet.java:143)
at com.google.api.server.spi.EndpointsServlet.createSystemService(EndpointsServlet.java:128)
at com.google.api.server.spi.EndpointsServlet.init(EndpointsServlet.java:57)
I have used the exact web.xml in the example on migrating here
https://github.com/GoogleCloudPlatform/java-docs-samples/blob/master/appengine/endpoints-frameworks-v2/migration-example/src/main/webapp/WEB-INF/web.xml
Could there be something I am missing out?
In the Endpoint class above I just have a single parameter constructor like this
#Inject
public EndpointClassEndpoint(EndpointClassContext context) {
this.context = context;
}
I would appreciate any help to resolve this error
Adding the complete web.xml as requested by #saiyr
<?xml version="1.0" encoding="utf-8" standalone="no"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<listener>
<listener-class>
somethpath.bootstrap.CompanyOneGSCL
</listener-class>
</listener>
<listener>
<listener-class>
somethpath.bootstrap.listeners.ObjectifyLoaderContextListener
</listener-class>
</listener>
<!-- GUICE -->
<filter>
<filter-name>guiceFilter</filter-name>
<filter-class>com.google.inject.servlet.GuiceFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>guiceFilter</filter-name>
<url-pattern>/_ah/spi/*</url-pattern>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- ENDPOINTS -->
<servlet>
<servlet-name>EndpointsServlet</servlet-name>
<servlet-class>com.google.api.server.spi.EndpointsServlet</servlet-class>
<init-param>
<param-name>services</param-name>
<param-value>
somethpath.endpoints.PraxoneV1API,
somethpath.endpoints.EmpresasEndpoint,
csomethpath.endpoints.AdministrationEndpoint,
somethpath.endpoints.CentrosEndpoint,
somethpath.endpoints.CargosEndpoint,
somethpath.endpoints.TrabajadoresEndpoint,
somethpath.endpoints.EvaluacionEndpoint,
somethpath.endpoints.EpidemiologiaEndpoint,
somethpath.endpoints.ActividadEndpoint,
somethpath.endpoints.TrabajadoresOpenEndpoint,
somethpath.endpoints.AsyncJobEndpoint
</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>EndpointsServlet</servlet-name>
<url-pattern>/_ah/api/*</url-pattern>
</servlet-mapping>
<!-- MonitorCompanyTask Servlet -->
<servlet>
<servlet-name>MonitorCompanyTask</servlet-name>
<servlet-class>reducted-path.MonitorCompanyTask</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MonitorCompanyTask</servlet-name>
<url-pattern>/tasks/v1/monitor/company</url-pattern>
</servlet-mapping>
<!--servlet>
<servlet-name>appstats</servlet-name>
<servlet-class>com.google.appengine.tools.appstats.AppstatsServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>appstats</servlet-name>
<url-pattern>/appstats/*</url-pattern>
</servlet-mapping>
<security-constraint>
<web-resource-collection>
<web-resource-name>appstats</web-resource-name>
<url-pattern>/appstats/*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>admin</role-name>
</auth-constraint>
</security-constraint -->
<!-- All app must use HTTPS -->
<security-constraint>
<web-resource-collection>
<web-resource-name>any</web-resource-name>
<url-pattern>/*</url-pattern>
</web-resource-collection>
<user-data-constraint>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
</security-constraint>
</web-app>
When I do gradle dependencies this is what I get
+--- com.google.endpoints:endpoints-framework:2.0.8
| +--- javax.servlet:servlet-api:2.5
| +--- com.google.guava:guava:19.0 -> 20.0
| +--- com.fasterxml.jackson.core:jackson-annotations:2.6.4 -> 2.9.0
| +--- com.fasterxml.jackson.core:jackson-core:2.6.4 -> 2.9.6
| +--- com.fasterxml.jackson.core:jackson-databind:2.6.4 -> 2.9.6
| | +--- com.fasterxml.jackson.core:jackson-annotations:2.9.0
| | \--- com.fasterxml.jackson.core:jackson-core:2.9.6
| +--- com.google.appengine:appengine-api-1.0-sdk:1.9.49 -> 1.9.64
| +--- com.google.http-client:google-http-client-jackson2:1.21.0 -> 1.23.0
| | +--- com.google.http-client:google-http-client:1.23.0
| | | +--- com.google.code.findbugs:jsr305:1.3.9 -> 3.0.1
| | | \--- org.apache.httpcomponents:httpclient:4.0.1 -> 4.5.2
| | | +--- org.apache.httpcomponents:httpcore:4.4.4
| | | +--- commons-logging:commons-logging:1.2
| | | \--- commons-codec:commons-codec:1.9 -> 1.10
| | \--- com.fasterxml.jackson.core:jackson-core:2.1.3 -> 2.9.6
| +--- com.google.api-client:google-api-client:1.21.0 -> 1.23.0
| | +--- com.google.oauth-client:google-oauth-client:1.23.0
| | | +--- com.google.http-client:google-http-client:1.23.0 (*)
| | | \--- com.google.code.findbugs:jsr305:1.3.9 -> 3.0.1
| | +--- com.google.http-client:google-http-client-jackson2:1.23.0 (*)
| | \--- com.google.guava:guava-jdk5:17.0
| +--- com.google.api-client:google-api-client-appengine:1.21.0 -> 1.23.0
| | +--- com.google.oauth-client:google-oauth-client-appengine:1.23.0
| | | +--- com.google.http-client:google-http-client-appengine:1.23.0
| | | | \--- com.google.http-client:google-http-client:1.23.0 (*)
| | | +--- com.google.oauth-client:google-oauth-client:1.23.0 (*)
| | | \--- com.google.oauth-client:google-oauth-client-servlet:1.23.0
| | | +--- com.google.oauth-client:google-oauth-client:1.23.0 (*)
| | | +--- com.google.http-client:google-http-client-jdo:1.23.0
| | | | +--- com.google.http-client:google-http-client:1.23.0 (*)
| | | | \--- javax.jdo:jdo2-api:2.3-eb
| | | | \--- javax.transaction:transaction-api:1.1
| | | \--- javax.jdo:jdo2-api:2.3-eb (*)
| | +--- com.google.api-client:google-api-client:1.23.0 (*)
| | +--- com.google.api-client:google-api-client-servlet:1.23.0
| | | +--- com.google.oauth-client:google-oauth-client-servlet:1.23.0 (*)
| | | +--- com.google.api-client:google-api-client:1.23.0 (*)
| | | +--- javax.servlet:servlet-api:2.5
| | | \--- javax.jdo:jdo2-api:2.3-eb (*)
| | \--- com.google.http-client:google-http-client-appengine:1.23.0 (*)
| +--- com.google.code.findbugs:jsr305:3.0.1
| +--- io.swagger:swagger-models:1.5.9
| | +--- com.fasterxml.jackson.core:jackson-annotations:2.4.5 -> 2.9.0
| | +--- org.slf4j:slf4j-api:1.6.3 -> 1.7.21
| | \--- io.swagger:swagger-annotations:1.5.9
| +--- io.swagger:swagger-core:1.5.9
| | +--- org.apache.commons:commons-lang3:3.2.1
| | +--- org.slf4j:slf4j-api:1.6.3 -> 1.7.21
| | +--- com.fasterxml.jackson.core:jackson-annotations:2.4.5 -> 2.9.0
| | +--- com.fasterxml.jackson.core:jackson-databind:2.4.5 -> 2.9.6 (*)
| | +--- com.fasterxml.jackson.datatype:jackson-datatype-joda:2.4.5
| | | +--- com.fasterxml.jackson.core:jackson-annotations:2.4.0 -> 2.9.0
| | | +--- com.fasterxml.jackson.core:jackson-core:2.4.5 -> 2.9.6
| | | +--- com.fasterxml.jackson.core:jackson-databind:2.4.5 -> 2.9.6 (*)
| | | \--- joda-time:joda-time:2.2 -> 2.9.4
| | +--- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.4.5
| | | +--- com.fasterxml.jackson.core:jackson-core:2.4.5 -> 2.9.6
| | | \--- org.yaml:snakeyaml:1.12
| | +--- io.swagger:swagger-models:1.5.9 (*)
| | +--- com.google.guava:guava:18.0 -> 20.0
| | \--- javax.validation:validation-api:1.1.0.Final
| \--- org.slf4j:slf4j-nop:1.7.21
| \--- org.slf4j:slf4j-api:1.7.21
I can see com.google.appengine:appengine-api-1.0-sdk:1.9.49 -> 1.9.64 and others that look like endpoints 1 dependencies, are these fine here?

Answer 1

Since you are trying to use Guice, you need to configure Endpoints like in the migration guide. Note that some of the lines in the Guice module are not relevant unless you're using API management. The last line where configureEndpoints is called is the most important. Then add the module to your Guice configuration.