将 json 发布到我的 Web 服务时，CURL 不起作用

Question

我使用 Grails 2.3.x 创建了一个 REST Web 服务，如下所示：

import grails.rest.RestfulController
class CityController extends RestfulController{

static responseFormats = ['json', 'xml']
CityController() {
    super(City)
}
}

这是我的域类：

import groovy.transform.ToString
import groovy.transform.EqualsAndHashCode

/**
 * City
 * A domain class describes the data object and it's mapping to the database
 */

@ToString(includeNames = true, includeFields = true, excludes = 'dateCreated,lastUpdated,metaClass')
@EqualsAndHashCode
class City {

    /* Default (injected) attributes of GORM */
    Long    id
    Long    version

    /* Automatic timestamping of GORM */
    Date    dateCreated
    Date    lastUpdated

    String cityName
    String postalCode
    String countryCode // either iso2 or iso3



    static constraints = {
        postalCode blank:false, nullable:false
        cityName blank:false, nullable:false
        countryCode minSize:2, maxSize:3, blank:false, nullable:false, matches: "[A-Z]+"    
    }
}

这是 urlMapping

class UrlMappings {

static mappings = {
    "/$controller/$action?/$id?(.$format)?"{
        constraints {
            // apply constraints here
        }
    }

    "/"(view:"/index")
    "500"(view:'/error')
    //
    // RESTService api
    "/api/city"(resources: 'city')
}
}

当我尝试使用 curl 获取数据时，我设法使用以下行获取结果：

curl -X GET -H "Accept:application/json" http://localhost:8080/ComuneUtenti/city 

但是当我尝试将数据发布到我的 WS 时，我遇到了如下错误：

curl: (6) Could not resolve host: countryCode
curl: (6) Could not resolve host: postalCode
curl: (3) [globbing] unmatched close brace/bracket in column 6
{"errors":[{"object":"comuneutenti.City","field":"postalCode","rejected-value":null,"message":"property [postalCode] of class [class comuneutenti.City] cannot be null"},{"object":"comuneutenti.City","field":"cityName","rejected-value":null,"message":"property
[cityName] of class [class comuneutenti.City] cannot be null"},{"object":"comuneutenti.City","field":"countryCode","rejected-value":null,"message":"property[countryCode] of class [class comuneutenti.City] cannot be null"}]}

这是我的帖子：

curl -H "Content-Type:application/json" -X POST -d '{"cityName":"NewYork", "countryCode":"IT", "postalCode": "00166"}' http://localhost:8080/ComuneUtenti/api/city

我错过了什么？

我正在使用 Grails 2.3.10 可以用 Postman 调用同一个 WS。

谢谢

Answer 1

你有没有尝试 erichelgeson 的建议？

正确的卷曲方法是

curl -H "Content-Type:application/json" -X POST -d '{"cityName":"NewYork", "countryCode":"IT", "postalCode": "00166"}' http://localhost:8080/ComuneUtenti/api/city

注意 json 负载周围的单引号。

要查看实际情况，您可以使用 echo 命令。

$ echo {"hello":"world"}
{hello:world}

$ echo '{"hello":"world"}'
{"hello":"world"}

shell 正在吃掉你字段周围的引号。

Answer 2

您使用的是哪个版本的 grails 2.3？ Grails 2.3.8 有一个错误，您无法发布到休息服务。

我相信这是在这里签到的。

https://github.com/grails/grails-core/commit/c050212fa0992f5b2d62c8e63795e4278fb2c3f4