如何从 java soap web 服务返回 JSON 结果

Question

Ok guys i have come up with my test code as you suggested to do so. I searched the internet and i get Gson that makes the task easy. i tested it by printing the results to the console like this and it returns the expected json result

public String printJson()
{
    ProductBLL productBLL = new ProductBLL();
    List<String> catList = productBLL.getProductCatagories();

    Gson gson = new Gson();
    String jsonCatList = gson.toJson(testList);
    System.out.println("Category List: " + jsonCatList);

}

Output
Category List: ["Book","Music","Movies"]

but when i try it in my java soap web service its not working that means the web service is still returning xml.

this is the web service method using Gson

@WebMethod
public String getCategories()
{
    List<String> catList = ppBll.getProductCatagories();

    Gson gson = new Gson();
    String jsonCatagoryList = gson.toJson(catList);

    return jsonCatagoryList ;
}

output

<?xml version="1.0" encoding="UTF-8"?><S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Header/>
<S:Body>
    <ns2:getCategoriesResponse xmlns:ns2="http://aman.org/">
        <return>Book</return>
        <return>Music</return>
        <return>Movies</return>
    </ns2:getCategoriesResponse>
</S:Body>

but i need it to return json . Where should it be modified to make it work in the web service?

Answer 1

SOAP web service will always return XML, may be you can create another REST web service which will internally call the SOAP WS and produce a JSON. with your REST you can easily do it.

so Step 1:

create a REST WS which produces JSON

Step 2:

Call SOAP WS from This REST WS and transform the output to the format you want.