Java play framework 2.0 json-接收空JsonNode对象
我在下面的代码中得到一个空的JsonNode对象。客户端javascript有问题。如果使用POST请求运行curl命令,则会得到正确的响应。如果在下面提到的Javascript中运行相同的代码,那么JsonNode对象将为null。这是密码Java play framework 2.0 json-接收空JsonNode对象,java,json,playframework,Java,Json,Playframework,我在下面的代码中得到一个空的JsonNode对象。客户端javascript有问题。如果使用POST请求运行curl命令,则会得到正确的响应。如果在下面提到的Javascript中运行相同的代码,那么JsonNode对象将为null。这是密码 Application.java package controllers; import org.codehaus.jackson.JsonNode; import play.Routes; import play.mvc.Controller; im
Application.java
package controllers;
import org.codehaus.jackson.JsonNode;
import play.Routes;
import play.mvc.Controller;
import play.mvc.Result;
import views.html.index;
public class Application extends Controller {
public static Result index() {
return ok(index.render("Your new application is ready."));
}
public static Result receiveData() {
response().setContentType("application/json");
JsonNode json = request().body().asJson();
if(json == null) {
return badRequest("Expecting Json data");
} else {
String name = json.findPath("name").getTextValue();
if(name == null) {
return badRequest("Missing parameter [name]");
} else {
return ok("Hello " + name);
}
}
}
public static Result javascriptRoutes() {
response().setContentType("text/javascript");
return ok(
Routes.javascriptRouter("jsRoutes",
// Routes
controllers.routes.javascript.Application.receiveData()
)
);
}
}
Routes
# This file defines all application routes (Higher priority routes first)
# ~~~~
# Home page
GET / controllers.Application.index()
POST /receiveData controllers.Application.receiveData()
GET /assets/javascripts/routes controllers.Application.javascriptRoutes()
# Map static resources from the /public folder to the /assets URL path
GET /assets/*file controllers.Assets.at(path="/public", file)
main.scala.html
@(title: String)(content: Html)
@import helper._
@import controllers.routes.javascript._
<!DOCTYPE html>
<html>
<head>
<title>@title</title>
<link rel="stylesheet" media="screen" href="@routes.Assets.at("stylesheets/main.css")">
<link rel="stylesheet" media="screen" href="@routes.Assets.at("stylesheets/bootstrap.css")">
<link rel="shortcut icon" type="image/png" href="@routes.Assets.at("images/favicon.png")">
<script type="text/javascript" src="@routes.Application.javascriptRoutes"></script>
<script src="@routes.Assets.at("javascripts/jquery-1.9.0.min.js")" type="text/javascript"></script>
<script src="@routes.Assets.at("javascripts/bootstrap.js")" type="text/javascript"></script>
<script src="@routes.Assets.at("javascripts/message.js")" type="text/javascript"></script>
</head>
<body>
<div class="container">
<div class = "row">
<div class = "span12">
<input type = "text" id = "inputValue" value="getData"></input>
<button class = "approveButton btn btn-primary">Approve </button>
</div>
</div>
</div>
</body>
</html>
下面是curl命令的输出:
curl --header "Content-type:application/json" --request POST --data '{"name":"abx"}' http://localhost:9000/receiveData
Hello abx
有人能帮你找出javascript文件中的错误吗。也许是个愚蠢的问题,但是你认为,ajax调用将是POST而不是GET吗?您是否尝试过用GET替换POST?ajax调用的预期结果是一个json对象。在这种情况下,如果希望以纯文本响应,请向请求添加数据类型:“text”:
jsRoutes.controllers.Application.receiveData().ajax({
data:outputData,
dataType: 'text',
contentType:'application/json',
success: function(data) {
console.log(data);
},
error: function() {
alert("Error!");
}
});
jsRoutes.controllers.Application.receiveData().ajax({
data:outputData,
dataType: 'text',
contentType:'application/json',
success: function(data) {
console.log(data);
},
error: function() {
alert("Error!");
}
});