web服务-如何解决JSON响应

Question

嗨，我正在做REST web服务。当我请求GET/POST方法时，响应是200 OK。但我想得到的答案是key，value。所以我这样写：

    @GET
    @Produces("application/json")
    public Response getContainer(@Context HttpHeaders headers){
        mongoDAOImpl impl=new mongoDAOImpl();
        Mongo mongo=impl.getConnection("127.0.0.1","27017");
        DB db=impl.getDataBase(mongo,"public");
        DBCollection coll=impl.getColl(db,"public");
        mongoDTO dto=new mongoDTO();

    try{
        DBCursor dbcur=impl.findAllRecords(coll);
        DBObject o;
        while(dbcur.hasNext()){
            o=dbcur.next();
        }
        if(dbcur==null){
            return Response.status(Response.Status.NOT_FOUND).build();
        }else{
            String respStr=dto.toJson(false);
         return Response.ok(respStr).header("Specification-version", "1.0").build();
          }
    }
        catch(Exception ex){
                ex.printStackTrace();
        return Response.status(Response.Status.NOT_FOUND).tag("Container Read Error : " + ex.toString()).build();
     }
    }

但我得到的结果是

GET /web/jersey/resources/cloud/juniarto
HTTP/1.1
User-Agent: curl/7.21.0 (i686-pc-linux-gnu) libcurl/7.21.0
OpenSSL/0.9.8o zlib/1.2.3.4 libidn/1.18
Host: localhost:26235
Accept: */*
HTTP/1.1 200 OK
X-Powered-By: Servlet/3.0
Server: GlassFish Server
Open Source Edition 3.0.1
Specification-version: 1.0
Content-Type: application/json
Transfer-Encoding: chunked
Date: Wed, 06 Apr 2011 00:56:48 GMT
Connection #0 to host localhost left intact
Closing connection #0 Error:org.codehaus.jackson.JsonGenerationException: Can not write a field name, expecting a values

有什么建议吗？

Answer 1

您使用的是哪种版本的Jersey？您的JSON输出是否包含任何数组？

看起来你正在经历JERSEY-478。尝试更新到Jersey 1.5或更高版本。