解析请求参数而无需编写包装器类 [英] Parse request parameters without writing wrapper class

问题描述

如何处理json请求并在dropWizard中解析请求参数?

How to handle json requests and parse the request parameters in dropWizard?

@POST
@Path("/test")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public String test(@Context final HttpServletRequest request) {
    JSONObject data=new JSONObject();
    System.out.println(request);
    System.out.println(request.getParameterMap());
    System.out.println(">>>>>>>>>");

    return "{\"status\":\"ok\"}";
}

我编写了上面的代码，并尝试了以下请求.

I wrote the above code and tried the following request.

curl -XPOST  -H "Content-Type: application/json" --data {"field1":"val1", "field2":"val2"} http://localhost:8080/test 

但是request.getParameterMap()是{}

如何在不编写包装器类的情况下解析参数?

How to parse the parameters without writing a wrapper class?

推荐答案

您的curl命令可能需要在数据周围加上一些引号(如果没有它们，我会得到一个错误):

Your curl command may need some additional quotes around the data (I'm getting an error without them):

curl -H "Content-type: application/json" -X POST -d '{"field1":"tal1", "field2":"val2"}' http://localhost:8080/test

您正在发送POST请求，没有 URL参数.我不确定为什么您期望在那里看到一些东西.

You are sending a POST request without URL parameters. I'm not sure why you are expecting to see something there.

我不知道您使用的是哪个版本的dropwizard，但是当对方法进行注释时，我无法使@POST和@Path("/something")注释的组合起作用.我正在获取HTTP ERROR 404.

I don't know which version of dropwizard you are using but I couldn't make the combination of @POST and @Path("/something") annotation to behave when a method is annotated. I'm getting HTTP ERROR 404.

要使其正常工作，我必须将@Path注释移至资源/类级别，并在方法中仅保留@Post注释.

To make it work I have to move the @Path annotation to the resource/class level and leave only the @Post annotation at the method.

@Path("/test")
public class SimpleResource {

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    public String test(final String data) throws IOException {
        System.out.println("And now the request body:");
        System.out.println(data);
        System.out.println(">>>>>>>>>");

        return "{\"status\":\"ok\"}";
    }
}

要以String的形式获取请求的正文，请执行上述操作.从此处获取:如何使用Jersey获得完整的REST请求正文?

To get the body of the request as String just do as above. Taken from here: How to get full REST request body using Jersey?

控制台看起来像:

INFO  [2016-11-24 15:26:29,290] org.eclipse.jetty.server.Server: Started @3539ms
And now the request body:
{"field1":"tal1", "field2":"val2"}
>>>>>>>>>

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