JSON响应以文本形式返回

问题描述

我在我的java servlet中编写了如下JSON响应，其中JObject是创建的JSON对象

I have composed JSON response as below in my java servlet, where JObject is the JSON object created

response.setContentType("application/json; charset=UTF-8");
PrintWriter printout = response.getWriter();
printout.print(JObject);
printout.flush();

但它在接收方收到text / plain

But it got received as text/plain in the receiving side

[Server: Apache-Coyote/1.1, ETag: W/"XXXXXXXXXX", Last-Modified: Tue, 04 Jun 2013 10:42:31 GMT, Content-Type: text/plain, Content-Length: 2573, Date: Tue, 04 Jun 2013 10:44:01 GMT]

如何获得确切的JSON响应？
如果我在同一台机器上编写 JSON 响应，即可获取JSON数据。但是如果我在另一台服务器上编写 JSON 响应，它将返回 text / plain 。

How to get the exact JSON response?If i compose the JSON response in same machine, im getting the JSON data. But if i compose the JSON response in another server, its returning back as text/plain.

这是 JObject ：

JSONObject JObject = new JSONObject();
JObject.put("Response", "1");
JObject.put("Message", "Client unauthorized");

推荐答案

我不确定你的代码到底是什么servlet。但是我已经创建了一个示例Servlet，并使用相同的代码返回Json输出。

I am not sure whether exactly what code you have in the servlet. But I have created a sample Servlet and it returned the Json output with the same above code.

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        response.setContentType("application/json; charset=UTF-8");
        PrintWriter printout = response.getWriter();

        JSONObject JObject = new JSONObject();
        JObject.put("Response", "1");
        JObject.put("Message", "Client unauthorized");

        printout.print(JObject);
        printout.flush();
            // Or
            // printout.write(JObject.toString());
    }

我得到了 {消息：客户未经授权的，响应：1} 作为浏览器的输出。

And I got {"Message":"Client unauthorized","Response":"1"} as output on the browser.

以下是结果快照：

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