java - 如何使用 NameValuePair 将数组值发送到 servlet？

Question

我正在尝试将 boolean 值数组发送到 servlet。这就是我到目前为止所做的，我很困惑:

HttpClient client = new DefaultHttpClient();  
    String postURL = "http://APP_NAME.appspot.com/listenforrestclient";
    HttpPost post = new HttpPost(postURL);
        List<NameValuePair> params = new ArrayList<NameValuePair>();

        for (int i=0; i<arrBool.length; i++) {
        arrBool[i] = r.nextBoolean();
        String[] user = {"","","","","",""};
        if (arrBool[i] == true) {
            params.add(new BasicNameValuePair("user[i]", arrBool.toString()));
        }
        else if (arrBool[i] == false) {
            params.add(new BasicNameValuePair("user[i]", arrBool.toString()));
    }
        }
        UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params,HTTP.UTF_8);
        post.setEntity(ent);
        HttpResponse responsePOST = client.execute(post);  
        HttpEntity resEntity = responsePOST.getEntity();  
        if (resEntity != null) {    
            System.out.printf("RESPONSE: ", EntityUtils.toString(resEntity));
        }
} catch (Exception e) {
    e.printStackTrace();
}

我尝试只执行 user[i], "user[i]", user.还是没找到。

在 servlet 上我有:

 public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException 
{
    resp.setContentType("text/plain");

    for (int i=0; i<mmaa.length; i++) {
        mmaa = req.getParameterValues("user");
        resp.getWriter().println(mmaa[i]);
    }

}

网上查了很多，没有找到合适的。如果有人能帮助我解决这个问题，我将非常感激。

谢谢

Answer 1

您有params.add(new BasicNameValuePair("user[i]", arrBool.toString()));

但是你的 key 是字符串“user[i]”。使用 String.format("user[%d]", i) 代替。所以，改变一下

params.add(new BasicNameValuePair("user[i]", arrBool.toString()));

至

params.add(new BasicNameValuePair(String.format("user[%d]", i), arrBool.toString()));

在 servlet 中，您可以通过执行以下操作来获取参数值:

for(int i = 0; i < ...){
    String value = request.getParameter(String.format("user[%d]", i);
    //process value  
}