Dropwizard/Jersey将Java List作为JSON返回,没有根节点

Question

我正在使用dropwizard,它使用泽西和杰克逊为json.我的问题是,当我返回一个列表时,它没有指定根.

我有一个POJO课程:

public class Company { 
public String id; 
public String name; 
public String address; 
}

我的资源设置如下:

@GET
@Path("/companies/all")
public List<Company> getAllCompanies(){
    ...
    return companies;
}

我收到以下回复:

[{
"id": "01",
"name": "Yammer Corp",
"address": "1 Finite Loop"
},
{
"id": "02",
"name": "DropWizards Inc",
"address": "4 Magic Square, Olympus"
}]

虽然我想要的是如下:

{"Companies" : 
[{
"id": "01",
"name": "Yammer Corp",
"address": "1 Finite Loop"
},
{
"id": "02",
"name": "DropWizards Inc",
"address": "4 Magic Square, Olympus"
}
]}

有任何想法吗？提前致谢.

Answer 1

你需要再创建一个POJO包装 List<Company>

public class ApiResponse
{
   private List<Company> Companies;
   //Getter and Setter
   //Public Constructor
}

您的GET方法中所需的更改是:

@GET
@Path("/companies/all")
public ApiResponse getAllCompanies(){
    //Set your ApiResponse Object with the companies List.
    ApiResponse apiResponse = new ApiResponse(companies);
    return apiResponse;
}