Android 如何将JSON数组作为Req发送到URL

我使用下面的代码将

Json

array对象发送到url。但是，它不起作用

HttpClient httpclient = new DefaultHttpClient();

        HttpPost httppost = new HttpPost("urlname");        
JSONObject json = new JSONObject();
        JSONArray Text_Field_Array = new JSONArray();
        JSONObject json_Text_Field = new JSONObject();
        json_Text_Field.put("pagenum", "1");
        json_Text_Field.put("text", "text field 1");
        json_Text_Field.put("font", "Arial");
        json_Text_Field.put("fontSize", "18");
        json_Text_Field.put("color", "#ff0000");
        json_Text_Field.put("x", "100");
        json_Text_Field.put("y", "0");
        json_Text_Field.put("alignment", "left");
        Text_Field_Array.put(json_Text_Field);
        JSONArray image_Field_Array = new JSONArray();
        JSONObject json_image_Field = new JSONObject();
        json_image_Field.put("image", "http://clintons-test.redboxdigital.net/media/uploads/llll.png");
        json_image_Field.put("pagenum", "1");
        json_image_Field.put("scale", "1");
        json_image_Field.put("rotation", "90");
        json_image_Field.put("x", "100");
        json_image_Field.put("y", "10");
        json_image_Field.put("width", "100");
        json_image_Field.put("height", "100");
        image_Field_Array.put(json_image_Field);
        json.put("images", image_Field_Array);
        json.put("all_text_fields", Text_Field_Array);
        json.put("sku", "CCI1022537");

StringEntity se = new StringEntity( "JSON: " + json.toString());  
        se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));

        httppost.setEntity(se);


        Log.v("URI","==="+ httppost);

        HttpResponse response = httpclient.execute(httppost);
        InputStream is = response.getEntity().getContent();
        SAXParserFactory spf = SAXParserFactory.newInstance();
        SAXParser sp = spf.newSAXParser();
        XMLReader xr = sp.getXMLReader();


        sb = new StringBuilder();
        byte[] buffer = new byte[512];
        int bytes_read = 0;

        while((bytes_read = is.read(buffer, 0, buffer.length)) > 0)
        {
            sb.append( new String(buffer,0,bytes_read));
        }

我使用上面的代码是通过考虑primalpop在中的答案 我认为问题在于：

StringEntity se = new StringEntity( "JSON: " + json.toString());  
            se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));

            httppost.setEntity(se);

如果有人知道如何将Json数组发送到url，请给我一些建议。提前感谢

JSONObject json=new JSONObject（）；
JSONObject json=new JSONObject();

         JSONArray Text_Field_Array = new JSONArray();

        JSONObject json_Text_Field = new JSONObject();
        json_Text_Field.put("pagenum", "1");
        json_Text_Field.put("text", "text field 1");
        json_Text_Field.put("font", "Arial");
        json_Text_Field.put("fontSize", "18");
        json_Text_Field.put("color", "ff0000");
        json_Text_Field.put("x", "100");
        json_Text_Field.put("y", "0");
        json_Text_Field.put("alignment", "left");

        Text_Field_Array.put(json_Text_Field);


        JSONArray image_Field_Array = new JSONArray();
        JSONObject json_image_Field = new JSONObject();
        json_image_Field.put("image", "http://clintons-test.redboxdigital.net/media/uploads/llll.png");
        json_image_Field.put("pagenum", "1");
        json_image_Field.put("scale", "1");
        json_image_Field.put("rotation", "90");
        json_image_Field.put("x", "100");
        json_image_Field.put("y", "10");
        json_image_Field.put("width", "100");
        json_image_Field.put("height", "100");

        image_Field_Array.put(json_image_Field);

        json.put("images", image_Field_Array);
        json.put("all_text_fields", Text_Field_Array);
        json.put("sku", "CCI1022537");


List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("carddata", json.toString()));
        httppost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

JSONArray Text_Field_Array=新的JSONArray（）；
JSONObject json_Text_Field=新JSONObject（）；
json_Text_Field.put（“pagenum”，“1”）；
json_Text_Field.put（“Text”，“Text Field 1”）；
json_Text_Field.put（“字体”、“Arial”）；
json_Text_Field.put（“fontSize”，“18”）；
json_Text_Field.put（“颜色”、“ff0000”）；
json_Text_Field.put（“x”，“100”）；
json_Text_Field.put（“y”，“0”）；
json_Text_Field.put（“对齐”、“左”）；
Text\u Field\u Array.put（json\u Text\u Field）；
JSONArray image_Field_Array=new JSONArray（）；
JSONObject json_image_字段=新建JSONObject（）；
json_image_Field.put（“image”http://clintons-test.redboxdigital.net/media/uploads/llll.png");
json_image_Field.put（“pagenum”，“1”）；
json_image_Field.put（“比例”，“1”）；
json_image_Field.put（“旋转”、“90”）；
json_image_Field.put（“x”，“100”）；
json_image_Field.put（“y”，“10”）；
json_image_Field.put（“宽度”、“100”）；
json_image_Field.put（“高度”、“100”）；
image\u Field\u Array.put（json\u image\u Field）；
put（“图像”，图像\字段\数组）；
put（“所有文本字段”，文本字段数组）；
json.put（“sku”、“CCI1022537”）；
List-nvps=newarraylist（）；
add（新的BasicNameValuePair（“carddata”，json.toString（））；
setEntity（新的UrlEncodedFormEntity（nvps，HTTP.UTF_8））；

通过使用上述代码，我们可以在android中以req的形式发送json格式的字符串