如何在JAX-RS REST方法中检索JSON消息正文? [英] How to retrieve the JSON message body in JAX-RS REST method?

问题描述

我在邮件正文中有以下JSON，它们将作为HTTP请求的一部分传递.

I have the following JSON that will be passed as part of a HTTP request, in the message body.

{
    "names": [
        {
            "id":"<number>",
            "name":"<string>",
            "type":"<string>",
        }
    ]
}

我当前的REST处理程序如下.我可以获取作为路径参数传递的ID和版本，但是我不确定如何在邮件正文中检索内容?

My current REST handler is below. I am able to get the Id and `Version that is passed in as path params, but I am not sure how to retrieve the contents on the message body?

        @PUT
        @Path("/Id/{Id}/version/{version}/addPerson")
        public Response addPerson(@PathParam("Id") String Id,
                                                @PathParam("version") String version) {

            if (isNull(Id) || isEmpty(version)) {
                return ResponseBuilder.badRequest().build();
            }

            //HOW TO RECIEVE MESSAGE BODY?

            //carry out PUT request and return DTO: code not shown to keep example simple


            if (dto.isSuccess()) {
                return Response.ok().build();
            } else {
                return Response.serverError().build();
            }

}

注意:我正在使用JAX-RS框架.

Note: I am using the JAX-RS framework.

推荐答案

您只需要将名称json映射到POJO并将@Consumes批注添加到put方法中，下面是一个示例:

You just need to map your name json to a POJO and add @Consumes annotation to your put method, here is an example:

@PUT
@Consumes("application/json")
@Path("/Id/{Id}/version/{version}/addPerson")
public Response addPerson(@PathParam("Id") String Id,
                          @PathParam("version") String version,
                          List<NamObj> names) {

如果不是这种情况，我假设您正在尝试检索元素列表，只需在参数中使用POJO即可.

I assume you are trying to retrieve a list of elements if is not the case just use you POJO as it in the param.

根据您在服务器中使用的json库，您可能需要在POJO中添加@xml批注，以便解析器知道如何映射请求，这就是示例json的映射应如下所示:

Depending on what json library are you using in your server you may need to add @xml annotation to your POJO so the parser could know how to map the request, this is how the mapping for the example json should look like:

@XmlRootElement
public class NameObj {
   @XmlElement public int id;
   @XmlElement public String name;
   @XmlElement public String type;
}

Jersey文档: https://jersey.java.net/documentation/latest/user-guide.html#json

Jersey doc: https://jersey.java.net/documentation/latest/user-guide.html#json

@化妆品参考: http://docs.oracle .com/javaee/6/tutorial/doc/gilik.html#gipyt

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