淺談thinkphp中將字符串轉換成json數組的方法

這是一部分代碼：

$client = M("Client");
$data = $client->where('user_id ='.$user_id)->select();
if($data == false || $data == null)
{
    /*查詢錯誤*/
    $str = array(
        'status' => 'error',
        'msg'    => '查詢錯誤',
        'content'=> 'null'
    );
    $this->ajaxReturn($str);

}
else
{
    /*查詢成功*/
    $str = array(
        'status' => 'success',
        'msg'    => '查詢成功',
        'content'=> $data
    );
    $this->ajaxReturn($str);
}

注意一下：php比較兩個字符串盡量不要用 == 來比較，會出現意料不到的后果；盡量用strcmp來比較，當結果為0 的時候表示想等。

這是兩種結果：

1、存在用戶的：

{"status":"success","msg":"\u67e5\u8be2\u6210\u529f","content":[{"client_id":"000003","client_name":"\u5f90\u5229\u5175","client_phone":"18813752547","client_address":"\u5e7f\u4e1c\u97f6\u5173\u7fc1\u6e90","client_picture":"http:\/\/www.baidu.com","user_id":"18813752547"},{"client_id":"000002","client_name":"\u5f90\u5229\u5175","client_phone":"18813752547","client_address":"\u5e7f\u4e1c\u97f6\u5173\u7fc1\u6e90","client_picture":"http:\/\/www.baidu.com","user_id":"18813752547"},{"client_id":"000001","client_name":"\u5f90\u5229\u5175","client_phone":"18813752547","client_address":"\u5e7f\u4e1c\u97f6\u5173\u7fc1\u6e90","client_picture":"http:\/\/www.baidu.com","user_id":"18813752547"},{"client_id":"000000","client_name":"\u5f90\u5229\u5175","client_phone":"18813752547","client_address":"\u5e7f\u4e1c\u97f6\u5173\u7fc1\u6e90","client_picture":"http:\/\/www.baidu.com","user_id":"18813752547"},{"client_id":"000004","client_name":"\u5f90\u5229\u5175","client_phone":"18813752547","client_address":"\u5e7f\u4e1c\u97f6\u5173\u7fc1\u6e90","client_picture":"http:\/\/www.baidu.com","user_id":"18813752547"},{"client_id":"000005","client_name":"\u5f90\u5229\u5175","client_phone":"18813752547","client_address":"\u5e7f\u4e1c\u97f6\u5173\u7fc1\u6e90","client_picture":"http:\/\/www.baidu.com","user_id":"18813752547"}]}

2、不存在用戶的：

{"status":"error","msg":"\u67e5\u8be2\u9519\u8bef","content":"null"}

相信大家都很關心一個問題：就是在android客戶端如何解析這種json格式？我來為大家解答一下：

假設實現了android客戶端將從服務器讀取過來的內容保存在buider里面，則接下來：

JSONObject jsonobject1 = new JSONObject(builder.tostring()).getJSONObject(“status”);

JSONObject jsonobject2 = new JSONObject(builder.tostring()).getJSONObject(“msg”);

JSONObject jsonobject3 = new JSONObject(builder.tostring()).getJSONObject(“content”);

String client_id = jsonobject3.getString(“client_id”);

String client_name = jsonobject3.getString(“client_name”);

…………

一次類推。

至於其他格式的json解析，自行網上查找方法。

可以參考一下這個：http://www.cnblogs.com/cpcpc/archive/2011/07/22/2122989.html