IntelliJ IDEA 2020.3 Help

Coding assistance for REST development

Besides the common Web services support, IntelliJ IDEA provides the following facilities for developing RESTful Web services:

Code Inspection and Quick Fixes

IntelliJ IDEA supports code inspections and suggests quick fixes in the following cases:

IssueDefault Quick Fix
Inconsistency between a method annotation and the method return type: a @GET annotated method returns void value.Change to String.
Resource methods errors.Remove @Path annotation.
Incorrect parameter type.Validation for parameters annotated with @QueryParam or @PathParam annotations.
@DefaultValue issues.
@GET public String get(@DefaultValue("33.5") @QueryParam("str") int str){ return "Hello"; }
DefaultValue is marked red with the description "Can't convert to int".
Rest @Path and @PathParam annotations inspections.
Rest References resolve problems.References in @PathParam annotations are resolved to templates in @Path annotations
This method should have only one HTTP method designator.Example:
@GET @POST public String get(){ return "Hello"; }
@POST is marked red.
WADL configuration errors.

HTTP Client in Code Editor

The dedicated HTTP client in IntelliJ IDEA code editor provides the following facilities for working with HTTP requests:

  • Composing and executing requests

  • Displaying server responses and the executed requests history

  • Completing the HTTP request parts from the @Path and @Produces annotations specified in the Java code

Change in the Java codeChange in the HTTP request in editor
@Path annotation is updated.

The contents of the Request-URI suggestion list change when you invoke code completion Ctrl+Space.

@Produces annotation is updated.

The contents of the Accept header field suggestion list change when you invoke code completion Ctrl+Space.

Last modified: 25 January 2021