angularjs post 提交中文乱码？

html:

<code><div ng-controller="login_input">
    <form ng-submit="check_login()">
        <div><a>用户名：</a></div>
<div><input type="text" required ng-model="login.uname"></div>
        <div><a>密码：</a></div>
<div><input type="password" required ng-model="login.upassword"></div>
        <div><a>验证码：</a></div>
<div>
<input type="number" min="0" required ng-model="login.chkcode"><img  src="img.php" alt="angularjs post 提交中文乱码？" >
</div>
{{login}}
        <button class="a_button" type="submit">登录</button>
    </form>
</div>
</code>