PHP 输出json。
$result = mysql_query($sql); //查询结果
$users=array();
$i=0;
while($row=mysql_fetch_array($result,MYSQL_ASSOC)){
$users[$i]=$row;
$i++;
}
echo json_encode(array("result"=>"success",'data'=>$users));
防止输出json数据乱码,把数据转为json
<?php/**
* function:输出Json格式
*/
class JSON{
public function encode($array) {
$this->arrayRecursive($array, 'urlencode', true);
$json = json_encode($array);
return urldecode($json);
}
private function arrayRecursive(&$array, $function, $apply_to_keys_also = false)
{
static $recursive_counter = 0;
if (++$recursive_counter > 1000) {
die('possible deep recursion attack');
}
foreach ($array as $key => $value) {
if (is_array($value)) {
$this->arrayRecursive($array[$key], $function, $apply_to_keys_also);
} else {
$array[$key] = $function($value);
} if ($apply_to_keys_also && is_string($key)) {
$new_key = $function($key);
if ($new_key != $key) {
$array[$new_key] = $array[$key];
unset($array[$key]);
}
}
}
$recursive_counter--;
}
}//调用
// $result_arr = Array();
// $count = 0;
// while($row=mysql_fetch_array($result1,MYSQL_ASSOC)){
// array_push($result_arr, $row);
// }
// $json = new JSON; $out = $json->encode(array('result'=>$result_arr));
// echo $out;
Java把List集合中数据转成json数据格式
PrintWriter pw = response.getWriter();
pw.print("{\"result\":\"success\",\"json\":" + mapper.writeValueAsString(list) + "}");
pw.close();
//需要用到 jackson-all—1.7.6.jar包