花瓣网(huaban.com)用户画板图片批量下载到本地
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// ==UserScript==
// @name 花瓣网下载
// @namespace https://www.saintic.com/
// @version 0.1
// @description 花瓣网(huaban.com)用户画板图片批量下载到本地
// @author staugur
// @match http*://huaban.com/boards/*
// @require https://cdn.bootcss.com/FileSaver.js/2014-11-29/FileSaver.min.js
// @grant GM_setClipboard
// @license MIT
// @date 2018-05-25
// @modified none
// @github https://github.com/staugur/grab_huaban_board
// @supportURL https://github.com/staugur/grab_huaban_board/issues
// ==/UserScript==
(function() {
'use strict';
/*
公共接口
*/
//字符串是否包含子串
function isContains(str, substr) {
//str是否包含substr
return str.indexOf(substr) >= 0;
}
//下载保存图片
function saveImage(imgUrl, imgName) {
//imgUrl: 图片地址; imgName: 保存的文件名
try {
const xhr = new XMLHttpRequest();
xhr.open('GET', imgUrl, true);
xhr.responseType = 'blob';
xhr.onload = () => {
if (xhr.status === 200) {
//将图片文件用浏览器中下载
saveAs(xhr.response, imgName);
}
};
xhr.send();
} catch (e) {
console.log(e);
}
}
//加载css文件
function addCSS(href) {
var link = document.createElement('link');
link.type = 'text/css';
link.rel = 'stylesheet';
link.href = href;
document.getElementsByTagName("head")[0].appendChild(link);
}
//加载js文件
function addJS(src, cb) {
var script = document.createElement("script");
script.type = "text/javascript";
script.src = src;
document.getElementsByTagName('head')[0].appendChild(script);
script.onload = typeof cb === "function" ? cb : function() {};
}
//由于@require方式引入jquery时layer使用异常，故引用cdn中jquery v1.10.1；加载完成后引用又拍云中layer v3.1.1
addJS("https://cdn.bootcss.com/jquery/1.10.1/jquery.min.js", function() {
addJS("https://static.saintic.com/cdn/layer/3.1.1/layer.js");
});
var board_id = window.location.pathname.split('/')[1] === "boards" ? window.location.pathname.split('/')[2] : "";
var protocol = window.location.protocol;
/*
下载图片
*/
//交互确定下载方式
function interactive(pins) {
var msg = [
'<b>当前画板共抓取' + pins.length + '张图片！</b><small>提示: 只有登录后才可以抓取几乎所有图片哦。</small><br/>',
'<b>请选择以下三种下载方式：</b><br/>',
'1. <i>文本</i>： <br/> 即所有图片地址按行显示，提供复制，粘贴至迅雷、QQ旋风等下载工具批量下载即可，推荐使用此方法。<br/>',
'2. <i>本地</i>： <br/> 即所有图片直接保存到硬盘中，由于是批量下载，所以浏览器设置中请关闭"下载前询问每个文件的保存位置"，并且允许浏览器下载多个文件的授权申请，以保证可以自动批量保存，否则每次保存时会弹出询问，对您造成困扰。<br/>',
'3. <i>远程</i>： <br/> 即所有图片将由第三方服务器下载并压缩，提供压缩文件链接，直接下载此链接解压即可。<br/>',
'<br/><p><b>寻求帮助？</b><a href="https://www.saintic.com/blog/256.html" target="_blank" title="帮助文档" style="color: green;">请点击我！</a></p>'
].join('');
layer.confirm(msg, {
title: "选择画板图片下载方式",
closeBtn: false,
shadeClose: false,
shade: 0,
btn: ['文本', '本地', '远程'],
btnAlign: 'c',
btn3: function(index, layero) {
downloadPicRemotely(pins);
}
}, function(index, layero) {
downloadPicText(pins);
}, function(index) {
downloadPicLocally(pins);
});
}
//本地下载
function downloadPicLocally(pins) {
for (var i = 0, len = pins.length; i < len; i++) {
saveImage(pins[i].imgUrl, pins[i].imgName);
}
}
//远端下载
function downloadPicRemotely(pins) {
$.ajax({
url: "https://www.saintic.com/CrawlHuaban/",
type: "POST",
data: {
board_id: board_id,
pins: JSON.stringify(pins)
},
success: function(res) {
if (res.success === true) {
var msg = "<b>下载任务已经提交！</b><br>根据画板图片数量，所需时间不等，请稍等数分钟后访问下载链接：<br><i><a href='" + res.downloadUrl + "' target='_blank'>" + res.downloadUrl + "</a></i><br>它将于" + res.expireTime + "过期，资源会被删除，请在那之前下载。";
layer.alert(msg, {
icon: 1,
title: "温馨提示",
btn: '我已知晓并复制下载链接',
btnAlign: 'c'
}, function(index) {
layer.close(index);
GM_setClipboard(res.downloadUrl);
layer.msg("复制成功", {
icon: 1
});
});
} else {
layer.msg("第三方服务异常: " + res.msg);
}
}
});
}
//文本方式下载，比如迅雷、QQ旋风
function downloadPicText(pins) {
var tip = '<b>请点击复制按钮，粘贴到迅雷等下载！</b><br/>',
str = '';
for (var i = 0, len = pins.length; i < len; i++) {
str += pins[i].imgUrl + "\n";
}
layer.alert(tip + str, {
title: "文本方式下载",
btn: '复制',
btnAlign: 'c',
icon: 1,
yes: function(index, layero) {
layer.close(index);
GM_setClipboard(str);
layer.msg("复制成功", {
icon: 1
});
}
});
}
//定位
var d = document.getElementById('page').getElementsByClassName('action-buttons')[0];
//插入下载画板按钮
if (isContains(d.innerText, "下载此画板") === false) {
d.insertAdjacentHTML('afterbegin', '<a href="#" id="downloadBoard" class="btn rbtn"><span class="text"> 下载此画板</span></a>');
}
//监听点击下载事件
document.getElementById("downloadBoard").onclick = function() {
if (board_id) {
var retry = 100,
limit = 100,
board_url = protocol + '//huaban.com/boards/' + board_id;
//get first pin data
$.ajax({
url: board_url,
type: "GET",
async: false,
success: function(res) {
try {
//console.log(res);
if (res.hasOwnProperty("board") === true) {
var board_data = res.board,
pin_number = board_data.pin_count,
board_pins = board_data.pins;
//console.log("Current board <" + board_id + "> pins number is " + pin_number + ", first pins number is " + board_pins.length);
if (board_pins.length < pin_number) {
var last_pin = board_pins[board_pins.length - 1].pin_id;
while (1 <= retry) {
//get ajax pin data
var board_next_url = protocol + "//huaban.com/boards/" + board_id + "/?max=" + last_pin + "&limit=" + limit + "&wfl=1";
$.ajax({
url: board_next_url,
type: "GET",
async: false,
success: function(res) {
//console.log(res);
var board_next_data = res.board;
board_pins = board_pins.concat(board_next_data.pins);
console.log("ajax load board with pin_id " + last_pin + ", get pins number is " + board_next_data.pins.length + ", merged");
if (board_next_data.pins.length === 0) {
retry = 0;
return false;
}
last_pin = board_next_data.pins[board_next_data.pins.length - 1].pin_id;
}
});
retry -= 1;
}
}
//console.log("共抓取" + board_pins.length + "个pin");
var pins = [];
for (var i = 0, len = board_pins.length; i < len; i++) {
var pin = board_pins[i];
pins.push({
imgUrl: "http://img.hb.aicdn.com/" + pin.file.key + "_fw658",
imgName: pin.pin_id + "." + pin.file.type.split("/")[1]
});
}
//交互确定下载方式
interactive(pins);
}
} catch (e) {
console.log(e);
}
}
});
}
};
})();