[英]Spring boot controler response Json object
I am new to spring boot and trying to learn it. 我是Spring Boot的新手,正在尝试学习它。 I tried the example with the RESTful service where one gets a JSON object from the controller as response. 我使用RESTful服务尝试了该示例,该服务从控制器获取一个JSON对象作为响应。 With the web address provided it works. 使用提供的网址即可使用。
But when i run it against a local controller in a spring boot installation on tomcat i only get a String array not a JSON object as response. 但是,当我在tomcat的春季启动安装中针对本地控制器运行它时,我只得到一个String数组而不是一个JSON对象作为响应。
I know you need to have a JSON mapper class in the project ( Jackson - mapper ). 我知道您需要在项目(Jackson-mapper)中有一个JSON映射器类。 But in the example its defined how to include that. 但是在示例中,它定义了如何包括该内容。
I looked here and at Google but found nothing about how to include the mapper. 我在这里和Google处看过,但对如何包含映射器一无所知。 Can someone tell me what i must do to get a JSON object in the response body from the controller or where to look? 有人可以告诉我我该怎么做才能从控制器的响应主体中获取JSON对象,或者在哪里看? Any advise welcome. 任何建议欢迎。
Khelvan Code Controller Khelvan代码控制器
@RequestMapping("/greeting")
@ResponseBody
public String ajaxGreetings(
// @RequestParam("name") String p_name
) {
String json = "{\"id\":2488,\"content\":\"Hello!\"}";
return json;
}
Ajax in Html HTML中的Ajax
$.ajax({
// url: "http://rest-service.guides.spring.io/greeting"
url: "http://host.org:8080/greeting"
}).then(function(data) {
$('.greeting-id').append(data.id);
$('.greeting-check').append(data);
$('.greeting-content').append(data.content);
});
Any Advise what is missing? 有什么建议吗?
Thanks and best regards 谢谢和最好的问候
Khel 凯尔
I solved the problem. 我解决了问题。 Its necessary to retrun a java Class containing the data as attributes from the controller not a json String. 有必要从控制器(而不是json字符串)重新运行包含数据作为属性的java类。 Spring convertes the return to json format and does only funtions when one returns a class here. Spring将return转换为json格式,并且仅当返回此处的类时才执行功能。
Best regards. 最好的祝福。
Khel. 凯尔。
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