Spring Boot Groovy编译错误:意外令牌@ @第45行 [英] Spring Boot groovy compilation error: Unexpected token @ @ line 45

问题描述

我正在尝试将Spring Boot项目中的Java控制器转换为Groovy，并在尝试编译和运行时遇到最奇怪的错误

I'm trying to convert a Java controller in my Spring Boot project to Groovy, and getting the strangest error when trying to compile and run

unexpected token: @ @ line 45, column 5
@RequestMapping(value = {"/v1/foo", "/foo"}, method = GET)
^

这让我感到困惑.注解是Java或Groovy中的注解，对吗?我想念什么?这是我的代码的抽象

This is baffling to me. Annotations are annotations in Java or Groovy, right? what am I missing? Here's an abstraction of my code

// src/main/groovy/my/package/FooController.groovy, formerly .java

/// ... proper imports

@RestController
@EnableAutoConfiguration
public class FooController {

    // ... @autowire services

    @RequestMapping(value = {"/v1/foo", "/foo"}, method = GET)
    public ResponseEntity get(@RequestHeader HttpHeaders headers) {
      // do work return ResponseEntity
    }

    @RequestMapping(value = {"/v1/foo", "/foo"}, method = PUT)
    public ResponseEntity put(@RequestHeader HttpHeaders headers, @ResponseBody @Valid final MyFoo myFoo) {
      // do work return ResponseEntity
    }
}

推荐答案

所以我很傻，错过了Java和Groovy之间的关键区别

So I'm just dumb and missed a key differentiator between Java and Groovy

问题是我传递给@RequestMapping

在Java中，{"/v1/foo", "foo"}是数组文字

In Java, {"/v1/foo", "foo"} is an array literal

在Groovy中，{"/v1/foo", "foo"}是一个闭包

In Groovy, {"/v1/foo", "foo"} is a closure

错误消息显然没有帮助，但是要解决此问题，我只需要更改Groovy中的注释即可按我的意图传递数组文字，而不是闭包

The error message obviously wasn't helpful, but to fix this I simply needed to change the annotation in Groovy to pass in an array literal as I intended, not a closure

@RequestMapping(value = ["/v1/foo", "/foo"], method = GET)

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