前端展示后台处理进度

来源：互联网发布：阿里云ecs教程编辑：程序博客网时间：2024/06/05 10:51

将后台处理逻辑进度在用户前以进度条的方式表现出

test.php

<?php

$step = $_REQUEST['step'];

if($step == 1) {

$re_data['step'] = array(

array('text'=>'解压文件','url'=>'/upload/test.php?step=2','param'=>array('k'=>'v','k1'=>'v1')),

array('text'=>'Copy文件','url'=>'/upload/test.php?step=3','param'=>array('k'=>'v','k1'=>'v1')),

array('text'=>'Install','url'=>'/upload/test.php?step=4','param'=>array('k'=>'v','k1'=>'v1')),

);

$re_data['overwrite'] = array(

'test1 file','test2 file','test3 file'

);

echo json_encode($re_data);

}elseif($step == 2) {

sleep(1);

$re_data['error'] = false;

echo json_encode($re_data);

}elseif($step == 3) {

sleep(1);

$re_data['error'] = false;

echo json_encode($re_data);

}elseif($step == 4) {

$re_data = array('success'=>'修改成功');

echo json_encode($re_data);

}

test.html

<!DOCTYPE html>

<html>

<head>

<title>TODO supply a title</title>

.form-group + .form-group { border-top: 1px solid #ededed; }

</style>

</head>

<body>

<div>

</div>

<div>

</div>

</div>

<label class="col-sm-2 control-label">将被覆盖的文件</label>

<br>

<button type="button" id="button-continue" class="btn btn-primary" disabled=""><i class="fa fa-check"></i> Continue</button>

</div>

var step = new Array();

var total = 0;

$('#button-continue').on('click', function() {

next();

$('#button-continue').prop('disabled', true);

});

$('#button-upload').on('click', function() {

$('#form-upload').remove();

$('body').prepend('<form enctype="multipart/form-data" id="form-upload" style="display: none;"><input type="file" name="file" /></form>');

$('#form-upload input[name=\'file\']').trigger('click');

if (typeof timer != 'undefined') {

clearInterval(timer);

}

timer = setInterval(function() {

if ($('#form-upload input[name=\'file\']').val() != '') {

clearInterval(timer);

// Reset everything

$('#progress-bar').css('width', '0%');

$('#progress-bar').removeClass('progress-bar-danger progress-bar-success');

$('#progress-text').html('');

$.ajax({

url: '/upload/test.php?step=1',

type: 'post',

dataType: 'json',

data: new FormData($('#form-upload')[0]),

cache: false,

contentType: false,

processData: false,

beforeSend: function() {

$('#button-upload').button('loading');

complete: function() {

$('#button-upload').button('reset');

success: function(json) {

if (json['error']) {

$('#progress-bar').addClass('progress-bar-danger');

$('#progress-text').html('<div class="text-danger">' + json['error'] + '</div>');

}

if (json['step']) {

step = json['step'];

total = step.length;

if (json['overwrite'].length) {

html = '';

for (i = 0; i < json['overwrite'].length; i++) {

html += json['overwrite'][i] + "\n";

}

$('#overwrite').html(html);

$('#button-continue').prop('disabled', false);

} else {

next();

}

error: function (xhr, ajaxOptions, thrownError) {

alert(thrownError + "\r\n" + xhr.statusText + "\r\n" + xhr.responseText);

}

});

}

}, 500);

});

function next() {

data = step.shift();

if (data) {

$('#progress-bar').css('width', (100 - (step.length / total) * 100) + '%');

$('#progress-text').html('<span class="text-info">' + data['text'] + '</span>');

console.log(data.url);

$.ajax({

url: data.url,

type: 'post',

dataType: 'json',

data: data.param,

success: function(json) { console.log(json);

if (json['error']) {

$('#progress-bar').addClass('progress-bar-danger');

$('#progress-text').html('<div class="text-danger">' + json['error'] + '</div>');

$('#button-clear').prop('disabled', false);

}

if (json['success']) {

$('#progress-bar').addClass('progress-bar-success');

$('#progress-text').html('<span class="text-success">' + json['success'] + '</span>');

}

if (!json['error'] && !json['success']) {

next();

}

error: function(xhr, ajaxOptions, thrownError) {

alert(thrownError + "\r\n" + xhr.statusText + "\r\n" + xhr.responseText);

}

});

}

</script>

</body>

</html>

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