JRS 10.0.0 Docker: cannot save JDBC Data Source, REST returns mandatory.parameter.error "resource body" missing

[ErClode]

Environment:

• Repository: TIBCOSoftware/js-docker
• JasperReports Server: 10.0.0 PRO
• Docker deployment using jaspersoft-containers/Docker/jrs
• Webapp image: jasperserver-webapp:10.0.0
• Buildomatic image: jasperserver-buildomatic:10.0.0
• PostgreSQL repository: postgres:12
• Tomcat base image from .env: tomcat:10.1.43-jdk17-temurin
• JDK base image from .env: eclipse-temurin:17-jdk-noble

Issue:
Saving a JDBC Data Source fails with HTTP 400.

The JDBC connection test works correctly from the UI, but when saving the Data Source, the request fails with:

{
"message": "The mandatory parameter "resource body" is missing.",
"errorCode": "mandatory.parameter.error",
"parameters": [
"resource body"
],
"properties": [
{
"key": "propertyPath",
"value": "resource body"
}
]
}

Reproduction:

1. Deploy a clean JasperReports Server 10.0.0 Docker environment using js-docker.
2. Use a clean PostgreSQL repository volume, no migration/import from older Jasper versions.
3. Login as superuser/superuser.
4. Create a new JDBC Data Source from the UI.
5. Use the internal PostgreSQL repository database:
   • Driver: PostgreSQL (org.postgresql.Driver)
   • Host: repository
   • Port: 5432
   • Database: jasperserver
   • URL: jdbc:postgresql://repository:5432/jasperserver
   • Username: postgres
   • Password: postgres
6. Click "Test Connection": connection succeeds.
7. Click "Save": save fails with HTTP 400 and mandatory.parameter.error "resource body" missing.

REST reproduction:
Creating a folder via REST works:

PUT /jasperserver-pro/rest_v2/resources/public/Rest_Folder_Test
Content-Type: application/repository.folder+json

Result: HTTP 201

Creating a JDBC Data Source via REST fails:

PUT /jasperserver-pro/rest_v2/resources/public/PG_Repo_DS_Clean_Test?createFolders=false&overwrite=true
Content-Type: application/repository.jdbcDataSource+json
Accept: application/repository.jdbcDataSource+json

Body:
{
"label": "PG_Repo_DS_Clean_Test",
"uri": "/public/PG_Repo_DS_Clean_Test",
"driverClass": "org.postgresql.Driver",
"username": "postgres",
"password": "postgres",
"connectionUrl": "jdbc:postgresql://repository:5432/jasperserver",
"timezone": ""
}

Result:
HTTP 400

{
"message": "The mandatory parameter "resource body" is missing.",
"errorCode": "mandatory.parameter.error",
"parameters": [
"resource body"
],
"properties": [
{
"key": "propertyPath",
"value": "resource body"
}
]
}

Additional tests:

• Same issue happens in a custom image and in a clean vanilla image.
• Same issue happens with a clean repository, without importing content from JasperReports Server 7.
• Same issue happens with SQL Server and PostgreSQL JDBC Data Sources.
• GET of existing JDBC Data Sources works.
• Test connection works.
• PUT folder works.
• PUT JDBC Data Source fails.
• Using Content-Type: application/json saves a generic JSON file resource, not a JDBC Data Source, so it is not a valid workaround.

Expected behavior:
A JDBC Data Source should be saved as a repository jdbcDataSource resource.

Actual behavior:
Saving fails with HTTP 400 and "resource body" missing.

I also reproduced the issue from the clean UI:

• Login: superuser/superuser
• Create JDBC Data Source under /public
• PostgreSQL driver: org.postgresql.Driver
• Host: repository
• Port: 5432
• Database: jasperserver
• Test Connection: successful
• Save: fails with HTTP 400

Network response:

{
"message": "The mandatory parameter "resource body" is missing.",
"errorCode": "mandatory.parameter.error",
"parameters": [
"resource body"
],
"properties": [
{
"key": "propertyPath",
"value": "resource body"
}

]
}