[英]Parse json in Ratpack Groovy
I started a small ratpack app in the Groovy console but I couldn't work out from the documentation how to get a hold of json data that has been sent in the request. 我在Groovy控制台中启动了一个小型的ratpack应用程序,但我无法从文档中找到如何获取已在请求中发送的json数据。
@Grab("io.ratpack:ratpack-groovy:0.9.4")
import static ratpack.groovy.Groovy.*
import groovy.json.JsonSlurper
ratpack {
handlers {
get {
def slurper = new JsonSlurper()
def result = slurper.parseText('{"person":{"name":"Guillaume","age":33,"pets":["dog","cat"]}}')
render "Hello world! ${result.person}"
}
post("foo") {
def slurper = new JsonSlurper()
def result = slurper.parseText("WHAT DO i PUT HERE?")
render "Hello world! ${result.person}"
}
}
}
And an example request: 一个示例请求:
curl -XPOST -H "Content-Type: application/json" -d '{"person":{"name":"Guillaume","age":33,"pets":["dog","cat"]}}' localhost:5050/foo
Ratpack provides a concept known as a Parser that allows you to parse incoming request body to a given type. Ratpack提供了一个称为Parser的概念,允许您将传入的请求主体解析为给定类型。
In your case, you could parse incoming request body to a JsonNode, or your own type using the ratpack-jackson
module. 在您的情况下,您可以使用ratpack-jackson
模块将传入的请求主体解析为JsonNode或您自己的类型。 You can find more information here . 您可以在此处找到更多信息。
Here is your example using the parser provided by the ratpack-jackson
module: 以下是使用ratpack-jackson
模块提供的解析器的示例:
@Grab("io.ratpack:ratpack-groovy:0.9.12")
@Grab("io.ratpack:ratpack-jackson:0.9.12")
import static ratpack.groovy.Groovy.*
import ratpack.jackson.JacksonModule
import static ratpack.jackson.Jackson.jsonNode
ratpack {
bindings {
add new JacksonModule()
}
handlers {
post("foo") {
def postBody = parse jsonNode()
render "Hello world! ${postBody.person}"
}
}
}
Your curl 你的卷曲
curl -XPOST -H "Content-Type: application/json" -d '{"person":{"name":"Guillaume","age":33,"pets":["dog","cat"]}}' localhost:5050/foo
Responds as 回复为
Hello world! {"name":"Guillaume","age":33,"pets":["dog","cat"]}
I hope this helps! 我希望这有帮助!
The earlier answers are no longer applicable. 之前的答案不再适用。
Since version 0.9.19, Ratpack returns a Promise. 从版本0.9.19开始,Ratpack返回一个Promise。 Also, it includes Jackson parsing support. 此外,它还包括Jackson解析支持。 So your example would look like this as of the time of this writing: 因此,在撰写本文时,您的示例将如下所示:
context.parse(Jackson.fromJson(Map)).then { data ->
println data.person
// do something with person
context.response.status(201).send()
}
Full docs available here: https://ratpack.io/manual/current/api/ratpack/jackson/Jackson.html#parsing 完整文档可在此处获取: https : //ratpack.io/manual/current/api/ratpack/jackson/Jackson.html#parsing
ps One semantic change I made to the example is to return a 201 (created), since it's a POST. ps我对该示例所做的一个语义更改是返回201(已创建),因为它是POST。
request.body.text
would give the string format of the JSON body request.body.text
将给出JSON主体的字符串格式
post("foo") {
def slurper = new JsonSlurper()
def result = slurper.parseText( request.body.text )
render "Hello world! ${result.person}"
}
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