Android的HTTPGET JSON数组 [英] Android httpGET JSON array
本文介绍了Android的HTTPGET JSON数组的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
目标：调用此功能，看看JSON数组从PHP回来，看看是否元素[0]或[1] == 1 PHP查询布尔的一个表，我想知道这是1和0为了继续功能。
我有这样的功能来执行HTTPGET并返回一个JSON对象
类CheckVotingStatus扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; { / **
*启动后台线程显示进度对话框之前
* * /
布尔失败= FALSE; @覆盖
在preExecute保护无效（）{
super.on preExecute（）;
pDialog =新ProgressDialog（Vote.this）;
pDialog.setMessage（检查票状态...）;
pDialog.setIndeterminate（假）;
pDialog.setCancelable（真）;
pDialog.show（）;
} @覆盖
保护字符串doInBackground（字符串参数... args）{
// TODO自动生成方法存根
//检查成功标记
诠释成功; 尝试{
//大厦参数
Log.d（！要求，出发）;
//通过HTTP请求获得产品的详细信息
JSONObject的JSON = jParser.getJSONFromUrl（LOGIN_URL）; //检查你的日志，JSON响应
// Log.d（登录尝试，json.toString（））; // JSON的成功标签
成功= json.getInt（TAG_SUCCESS）; 如果（成功== 1）{
// Log.d（登录成功！，json.toString（））; JSONArray answerObj = json.getJSONArray（TAG_ANSWER）; //从JSON数组的第一个产品对象
JSONObject的答案= answerObj.getJSONObject（0）;
字符串bool1s = answer.getString（TAG_BOOL1）;
的JSONObject ANSWER2 = answerObj.getJSONObject（1）;
字符串bool2s = answer2.getString（TAG_BOOL2）; / ****************************************** /
如果（bool1s.equals（1）及与放大器; bool2s.equals（0））
{
startVoting = TRUE;
}
否则如果（bool1s.equals（0）及与放大器; bool2s.equals（1））
{
endVoting = TRUE;
投票= FALSE; }
/ ********* /
//返回json.getString（TAG_MESSAGE）;
}
其他
{
//Log.d(\"Login失败，json.getString（TAG_MESSAGE））！;
//返回json.getString（TAG_MESSAGE）;
}
}赶上（JSONException E）{
e.printStackTrace（）;
}
返回null;
} 保护无效onPostExecute（字符串FILE_URL）{
//关闭该对话框一旦产品被删除
pDialog.dismiss（）;
如果（FILE_URL！= NULL）{
Toast.makeText（Vote.this，FILE_URL，Toast.LENGTH_LONG）.show（）;
} }
我的PHP页面查询从数据库返回两个布尔变量
$响应=阵列（）;
$ resttt =SELECT startingBool，endingBool FROM vote_count
$结果= mysql_query（$ resttt）;
如果（mysql_num_rows（$结果）大于0）{ $结果= mysql_fetch_array（$结果）; $答案=阵列（）;
$答案[startingBool] = $结果[startingBool];
$答案[endingBool] = $结果[endingBool];
//成功
$响应[成功] = 1; $响应[答案] =阵列（）; array_push（$响应[答案]，$答案）; //呼应JSON响应
回声json_en code（$响应）;}
我得到输入异常结束，对答案没有价值
的ERRJSON解析器
公开的JSONObject getJSONFromUrl（最终字符串URL）{
//使HTTP请求
尝试{
//构建客户端和HTTP请求。
// DefaultHttpClient的HttpClient =新DefaultHttpClient（）;
HttpClient的HttpClient的= createHttpClient（）;
HTTPGET HTTPGET =新HTTPGET（URL）;
//执行POST请求，并在本地存储的响应。
HTT presponse HTT presponse = httpClient.execute（HTTPGET）;
//从响应中提取数据。
HttpEntity httpEntity = HTT presponse.getEntity（）;
//打开与数据内容的InputStream。
是= httpEntity.getContent（）; }赶上（UnsupportedEncodingException五）{
e.printStackTrace（）;
}赶上（ClientProtocolException E）{
e.printStackTrace（）;
}赶上（IOException异常五）{
e.printStackTrace（）;
} 尝试{
//创建一个BufferedReader通过InputStream的解析。
读者的BufferedReader =新的BufferedReader（新的InputStreamReader（
是，ISO-8859-1），8）;
//声明一个字符串生成器，以帮助解析。
StringBuilder的SB =新的StringBuilder（）;
//声明一个字符串JSON对象数据存储在字符串形式。
串线= NULL; //生成字符串，直到空。
而（（行= reader.readLine（））！= NULL）{
sb.append（行+\\ n）;
} //关闭输入流。
is.close（）;
//字符串生成器的数据转换为实际的字符串。
JSON = sb.toString（）;
}赶上（例外五）{
Log.e（缓冲区错误，错误转换结果+ e.toString（））;
} //尝试将字符串解析到一个JSON对象
尝试{
Log.v（JSON，JSON）;
jObj =新的JSONObject（JSON）;
}赶上（JSONException E）{
Log.e（JSON解析器，错误分析数据+ e.toString（））;
} //返回JSON对象。
返回jObj;}
解决方案
从PHP的回声必须是这样
{成功：1，回答：[{BOOL1：0，BOOL2：1}]}
和你的PHP skript
//瞬移到数据库，创建表bool_table，插入数据bool_table .......
$响应=阵列（）;
$ resttt =SELECT BOOL1，BOOL2 FROM bool_table
$结果= mysql_query（$ resttt）;
如果（mysql_num_rows（$结果）大于0）{ $结果= mysql_fetch_array（$结果）; $答案=阵列（）;
$答案[BOOL1] = $结果[BOOL1];
$答案[BOOL2] = $结果[BOOL2];
//成功
$响应[成功] = 1; $响应[答案] =阵列（）; array_push（$响应[答案]，$答案）; //呼应JSON响应
回声json_en code（$响应）; }
和JSON解析
私有静态最后弦乐TAG_SUCCESS =成功;
私有静态最后弦乐TAG_ANSWER =答案;
私有静态最后弦乐TAG_BOOL1 =BOOL1;
私有静态最后弦乐TAG_BOOL2 =BOOL2;
诠释成功;......
...
JSONObject的JSON = jsonParser.makeHtt prequest（XXXXXXXXXXXXXX，GET，则params）; // JSON的成功标签
成功= json.getInt（TAG_SUCCESS）;
如果（成功== 1）{
//成功接收产品的详细信息
JSONArray answerObj = json.getJSONArray（TAG_ANSWER）; //从JSON数组的第一个产品对象
JSONObject的答案= answerObj.getJSONObject（0）;
串bool1s = answer.getString（TAG_BOOL1））;
串bool2s = answer.getString（TAG_BOOL2））;
}其他{
.......
....
GOAL: Call this function and look into an array of JSON returned from php and see if element[0] or [1] == 1. PHP queries a table of booleans and I want to know which are 1 and 0 in order to continue functionality.
I have this function to perform a httpGET and return a JSON object
class CheckVotingStatus extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
boolean failure = false;
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Vote.this);
pDialog.setMessage("Checking vote Status...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
// TODO Auto-generated method stub
// Check for success tag
int success;
try {
// Building Parameters
Log.d("request!", "starting");
// getting product details by making HTTP request
JSONObject json = jParser.getJSONFromUrl(LOGIN_URL);
// check your log for json response
// Log.d("Login attempt", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// Log.d("Login Successful!", json.toString());
JSONArray answerObj = json.getJSONArray(TAG_ANSWER);
// get first product object from JSON Array
JSONObject answer = answerObj.getJSONObject(0);
String bool1s = answer.getString(TAG_BOOL1);
JSONObject answer2 = answerObj.getJSONObject(1);
String bool2s = answer2.getString(TAG_BOOL2);
/******************************************/
if (bool1s.equals("1")&& bool2s.equals("0"))
{
startVoting = true;
}
else if (bool1s.equals("0")&& bool2s.equals("1"))
{
endVoting = true;
voted = false;
}
/*******************************************/
//return json.getString(TAG_MESSAGE);
}
else
{
//Log.d("Login Failure!", json.getString(TAG_MESSAGE));
//return json.getString(TAG_MESSAGE);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once product deleted
pDialog.dismiss();
if (file_url != null){
Toast.makeText(Vote.this, file_url, Toast.LENGTH_LONG).show();
}
}
My PHP page queries to return two bools from a database
$response = array();
$resttt = "SELECT startingBool, endingBool FROM vote_count";
$result = mysql_query("$resttt");
if (mysql_num_rows($result) > 0) {
$result = mysql_fetch_array($result);
$answer = array();
$answer["startingBool"] = $result["startingBool"];
$answer["endingBool"] = $result["endingBool"];
// success
$response["success"] = 1;
$response["answer"] = array();
array_push($response["answer"], $answer);
// echoing JSON response
echo json_encode($response);
}
I'm getting an end of input exception and an err for no value for answer
JSON PARSER
public JSONObject getJSONFromUrl(final String url) {
// Making HTTP request
try {
// Construct the client and the HTTP request.
//DefaultHttpClient httpClient = new DefaultHttpClient();
HttpClient httpClient = createHttpClient();
HttpGet httpGet = new HttpGet(url);
// Execute the POST request and store the response locally.
HttpResponse httpResponse = httpClient.execute(httpGet);
// Extract data from the response.
HttpEntity httpEntity = httpResponse.getEntity();
// Open an inputStream with the data content.
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
// Create a BufferedReader to parse through the inputStream.
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
// Declare a string builder to help with the parsing.
StringBuilder sb = new StringBuilder();
// Declare a string to store the JSON object data in string form.
String line = null;
// Build the string until null.
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
// Close the input stream.
is.close();
// Convert the string builder data to an actual string.
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// Try to parse the string to a JSON object
try {
Log.v("JSON", json);
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// Return the JSON Object.
return jObj;
}
解决方案
your echo from php must be like this
{"success":1,"answer":[{"bool1":"0","bool2":"1"}]}
and your php skript
//conect to database, create table bool_table, insert data to bool_table.......
$response = array();
$resttt = "SELECT bool1, bool2 FROM bool_table";
$result = mysql_query("$resttt");
if (mysql_num_rows($result) > 0) {
$result = mysql_fetch_array($result);
$answer = array();
$answer["bool1"] = $result["bool1"];
$answer["bool2"] = $result["bool2"];
// success
$response["success"] = 1;
$response["answer"] = array();
array_push($response["answer"], $answer);
// echoing JSON response
echo json_encode($response);
}
and parsing JSON
private static final String TAG_SUCCESS = "success";
private static final String TAG_ANSWER = "answer";
private static final String TAG_BOOL1 = "bool1";
private static final String TAG_BOOL2 = "bool2";
int success;
......
...
JSONObject json = jsonParser.makeHttpRequest("xxxxxxxxxxxxxx", "GET", params);
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully received product details
JSONArray answerObj = json.getJSONArray(TAG_ANSWER);
// get first product object from JSON Array
JSONObject answer = answerObj.getJSONObject(0);
String bool1s = answer.getString(TAG_BOOL1));
String bool2s = answer.getString(TAG_BOOL2));
}else{
.......
....
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