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如何使用 json 一次发送多个记录？此代码是我在网上找到的示例，但我需要一次发送 100 个对象或记录。数据来自数据库。

protected String doInBackground(String... args) {
        String name = inputName.getText().toString();
        String price = inputPrice.getText().toString();
        String description = inputDesc.getText().toString();

        // Building Parameters
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        params.add(new BasicNameValuePair("name", name));
        params.add(new BasicNameValuePair("price", price));
        params.add(new BasicNameValuePair("description", description));

        // getting JSON Object
        // Note that create product url accepts POST method
        JSONObject json = jsonParser.makeHttpRequest(url_create_product,
                "POST", params);
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2 回答 2

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You must create the JSONObject that represent the objects, and add it to the Request:

If you have this structure for example:

{[{name:"name1",price:"10"},{name:"name2",price:"15"}]}

 JSONArray elements=new JSONArray();
  JSONObject aux=new JSONObject().put("name", "name1");
    aux.put("price", 10);
    array.put(aux);

    aux=new JSONObject().put("name1", "name2");
    aux.put("price", 20);
    array.put(aux);

List<NameValuePair> parameters= new ArrayList<NameValuePair>();
parameters.add(new BasicNameValuePair("json", elements.toString()));
HttpPost post = new HttpPost(url);
post.setEntity(new UrlEncodedFormEntity(pairs));
HttpClient cliente = createHttpClient();
return cliente.execute(post);

And in the server you catch the parameter "json"

于 2013-08-15T11:26:38.557 回答
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您可以将数据列表写入 String，然后将其发送到 php url。在phpjson_decode中读取数据列表； 

public static class Entity{
        private String name;
        private String price;
        private String description;

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getPrice() {
            return price;
        }

        public void setPrice(String price) {
            this.price = price;
        }

        public String getDescription() {
            return description;
        }

        public void setDescription(String description) {
            this.description = description;
        }
    }

    @Test
    public void send() throws Exception{
        ObjectMapper mapper = new ObjectMapper();
        List<Entity> list = new ArrayList<Entity>(); // get the list of Entity;
        String json = mapper.writeValueAsString(list); // write list as json

        HttpClient client = new DefaultHttpClient();
        HttpPost post = new HttpPost("http://url.to.post");

        StringEntity entity = new StringEntity(json);
        post.setEntity(entity);

        HttpResponse response = client.execute(post);

        String result = EntityUtils.toString(response.getEntity());
        Object responseObject = mapper.readValue(result, Object.class);
    }

为了使用 ObjectMapper，您的库中需要 jackson-core-asl 和 jackson-mapper-asl。

于 2013-08-13T03:50:56.343 回答