Question

我目前正在创建一个画布Javascript游戏，我将localstorage变量传递给我的数据库即Score。得分“已过去”。当我调试时，我看到localstorage值存在。但它似乎并没有存储到数据库中。最好不使用Ajax？

function drawElapsedTime(){
        var elapsed=parseInt((new Date() - startTime)/1000);
        g.save();
        g.beginPath();
        g.fillStyle="#008000";
        g.font="14px Verdana"
        // draw the running time at half opacity
        g.globalAlpha=0.50;
        g.fillText(elapsed+" secs",canvas.width-75,25);
        localStorage.setItem("score",elapsed);
        g.restore();

    }
 var storedTime = localStorage.getItem("score");

 <form action="UserActionServlet" method="post">


                 <input type="submit" value="scoreObj" class="submit" />

     </form>

命令：

String xscore = request.getParameter("score");

        int score = 0;
        if (xscore != null) {
            score = Integer.parseInt(xscore);
        }
 System.out.println(xscore);

Answer 1

您没有将得分变量作为参数传递给表单帖子。

<form action="UserActionServlet" method="post" onSubmit="submitForm(this.form)">
        <input type = "hidden" name = "score"/>
        <input type="submit" value="scoreObj" class="submit" />
</form>

<script>
    function submitForm(f){
         f.score.value = storedTime ;
         f.submit();
    }
</script>

将localstorage值传递给Server（Java，JSP）

1 个答案: