android解析php输出的json格式字符串实例

原文地址：http://blog.csdn.net/liwei3gjob/article/details/7999702

在服务器端使用php从mysql数据库中查找数据出来，然后构造成json，等待客户端以get方式获取。

本例子基本在上次的例子上面进行。图片效果如下：



访问页面的json数据为：

{“value”:[{"nid":"1","title":"迎新","keyword":"迎新","date_time":"1309791386","content":"某某学院将于XX年XX月XX日XX点于XX地举办XX届迎新晚会！ "},{"nid":"2","title":"南岭校区艺术活动中心","keyword":"南岭，艺术","date_time":"1309791498","content":"赛后，康永刚处长致闭幕辞，祝贺比赛圆满结束，恭喜参赛选手斩获佳绩。"}]}

[java] view
plaincopy

index.php代码

<?php

header("Content-Type: text/html; charset=UTF-8");

$type = $_GET['type'];

if($type == 1)

{

//$obj->title = "Test";

//$obj->id = 1;

//$obj->value = urlencode("TTT");

//echo urldecode ( json_encode ($obj));

$array = array( 'title'=>'TTT', 'id'=>1, 'value'=>urlencode("测试"));

echo urldecode(json_encode($array));

}

else

{

$con = mysql_connect ( "localhost", "root", "windows" );

if (!$con)

{

die ( 'Could not connect: ' . mysql_error () );

}

mysql_select_db ( "dg", $con );

mysql_query ( "set names utf8" );

$query = "select * from p_news";

$result = mysql_query ( $query );

while ( $row = mysql_fetch_assoc ( $result ) )

{

$response [] = $row;

}

foreach ( $response as $key => $value )

{

$newData[$key] = $value;

$newData [$key] ['title'] = urlencode ( $value ['title'] );

$newData [$key] ['keyword'] = urlencode ( $value ['keyword'] );

$newData [$key] ['content'] = urlencode ( $value ['content'] );

}

echo urldecode ( json_encode ( array("value"=>$newData) ));

mysql_free_result($result);

mysql_close ( $con );

}

?>

Android中Java代码如下：

public void getServerJsonDataWithType(String url,EditText editText)

{

int res = 0;

HttpClient client = new DefaultHttpClient();

StringBuilder str = new StringBuilder();

HttpGet httpGet = new HttpGet(url);

BufferedReader buffer = null;

try

{

HttpResponse httpRes = client.execute(httpGet);

httpRes = client.execute(httpGet);

res = httpRes.getStatusLine().getStatusCode();

if(res == 200)

{

buffer = new BufferedReader(new InputStreamReader(httpRes.getEntity().getContent(),Charset.forName("UTF-8")));

for(String s = buffer.readLine(); s != null ; s = buffer.readLine())

{

str.append(s);

}

Log.i(Tag,str.toString());

buffer.close();

JSONArray json = new JSONObject(str.toString()).getJSONArray("value");

String strs = "";

for(int i=0;i<json.length();i++)

{

JSONObject jsonObject = (JSONObject)json.opt(i);

strs += jsonObject.getString("content");

}

//String title = json.getString("title");

//int id = json.getInt("id");

//String value = json.getString("value");

editText.setText(strs);

}

else

{

Log.i(Tag, "HttpGet Error");

}

}

catch(Exception e)

{

Log.i(Tag, "Exception");

if(buffer != null)

{

try {

buffer.close();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

}

}

}

数据库代码如下：