Bad request when updating Appengine with mvn appengine:update

Question

i\'m getting the following error, when I try to update a appengine-application with the appengine-maven-plugin:

400 Bad Request
Error when loading application co         


        

Answer 1

Try to change appengine-web.xml entry from <version>0-0-1</version> to <version>1</version>. Regards, Adam.

Answer 2

I had the same issue as you described. When I added the "version" element in the configuration element, with value pointing to the version of the app in my appengine-web.xml file, mvn appengine:update completed successfully. (maven v3.1.0, appengine plugin v1.8.3)

in pom.xml:

....
<plugin>
   <groupId>com.google.appengine</groupId>
   <artifactId>appengine-maven-plugin</artifactId>
   <version>${appengine.version}</version>
   <configuration>
      <version>MY-VERSION</version>
   </configuration>
</plugin>
...

in appengine-web.xml:

...
<version>MY-VERSION</version>
...

Answer 3

The way I solved this issue was trivial in my console I executed mvn clean install and then the appcfg.cmd -A [your app] update target\appengine-try-java-1.0 command.

Answer 4

In changed only the pom.xml file by adding the plugin>configuration>version tag (per below)...

<plugin>
    <groupId>com.google.appengine</groupId>
    <artifactId>appengine-maven-plugin</artifactId>
    <version>${project.appengine.version}</version>
    <configuration>
      <port>8888</port>
     *<version>${app.version}</version>*
    </configuration>
</plugin>

Answer 5

If you generated the project with the archetype skeleton, like I did, and you have a block similar to

<properties>
    <app.id>MY-GAE-PROJECT-ID</app.id>
    <app.version>1</app.version>
    <appengine.version>1.9.20</appengine.version>
    <gcloud.plugin.version>0.9.58.v20150505</gcloud.plugin.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

in your pom.xml and your appengine-web.xml looked like

<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
<application>${app.id}</application>
<version>1</version>
etc....

when it got made, then, modify appengine-web.xml to be ${app.version} because they so helpfully already added that property with the archetype but never used it anywhere. Then, update your pom.xml's app.version to be your appropriate version (if you don't use "1"). Then, scroll down in the pom.xml to where you see

            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-maven-plugin</artifactId>
            <version>${appengine.version}</version>
            <configuration>
                <enableJarClasses>false</enableJarClasses>

and inside the configuration block there add

                <version>${app.version}</version>