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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 0.2
// @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/*
// @match http*://huaban.com/*
// @exclude http*://huaban.com/boards/*/edit/*
// @exclude http*://huaban.com/boards/*/followers/*
// @exclude http*://huaban.com/*/likes/*
// @exclude http*://huaban.com/*/pins/*
// @exclude http*://huaban.com/*/tags/*
// @exclude http*://huaban.com/*/followers/*
// @exclude http*://huaban.com/*/following/*
// @require https://cdn.bootcss.com/FileSaver.js/1.3.2/FileSaver.min.js
// @grant GM_setClipboard
// @license MIT
// @date 2018-05-25
// @modified 2018-05-30
// @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;
}
//数组是否包含某元素
function arrayContains(arr, obj) {
var i = arr.length;
while (i--) {
if (arr[i] === obj) {
return true;
}
}
return false;
}
//判断页面中id是否存在
function hasId(id) {
//有此id返回true，否则返回false
var element = document.getElementById(id);
if (element) {
return true
} else {
return false
}
}
//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.error(e);
}
}
//计算百分比
function calculatePercentage(num, total) {
//小数点后两位百分比
return (Math.round(num / total * 10000) / 100.00 + "%");
}
//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");
});
/*
下载用户画板接口
*/
//交互确定画板下载方式
function interactiveBoard(board_id, pins, pin_number) {
var msg = [
'<div style="padding: 20px;"><b>当前画板共' + pin_number + '张图片，抓取了' + pins.length + '张，抓取率：' + calculatePercentage(pins.length, pin_number) + '！</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/> 即所有图片将由远端服务器下载并压缩，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></div>'
].join('');
layer.open({
type: 1,
title: "选择画板图片下载方式",
content: msg,
closeBtn: false,
shadeClose: false,
shade: 0,
btn: ['文本', '本地', '远程'],
btnAlign: 'c',
zIndex: layer.zIndex,
success: function(layero) {
layer.setTop(layero);
},
yes: function(index, layero) {
//文本方式下载，比如迅雷、QQ旋风
layer.close(index);
layer.open({
type: 1,
title: "文本方式下载",
content: '<div style="padding: 20px;"><b>请点击复制按钮，粘贴到迅雷等下载！</b></div>',
closeBtn: false,
shadeClose: false,
shade: 0,
btn: '复制',
btnAlign: 'c',
maxmin: true,
zIndex: layer.zIndex,
success: function(layero) {
layer.setTop(layero);
},
yes: function(index, layero) {
layer.close(index);
GM_setClipboard(pins.map(function(pin) {
return pin.imgUrl + "\n";
}).join(""));
layer.msg("复制成功", {
icon: 1
});
}
});
},
btn2: function(index, layero) {
//本地下载
layer.close(index);
pins.map(function(pin) {
saveImage(pin.imgUrl, pin.imgName);
});
},
btn3: function(index, layero) {
//远端下载
layer.close(index);
$.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 = ['<div style="padding: 20px;"><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<b>',
res.expireTime + '</b>过期，那时资源会被删除，请提前下载。</div>'
].join("");
layer.open({
type: 1,
title: "温馨提示",
content: msg,
closeBtn: false,
shadeClose: false,
shade: 0,
area: '390px',
btn: '我已知晓并复制下载链接',
btnAlign: 'c',
maxmin: true,
zIndex: layer.zIndex,
success: function(layero) {
layer.setTop(layero);
},
yes: function(index, layero) {
layer.close(index);
GM_setClipboard(res.downloadUrl);
layer.msg("复制成功", {
icon: 1
});
}
});
} else {
layer.msg("远端服务异常: " + res.msg, {
icon: 2
});
}
}
});
}
});
}
//交互确定用户下载方式
function interactiveUser(user_id, boards) {
boards.map(function(board_id) {
var msg = [
'<div style="padding: 20px;"><b>当前画板是：' + board_id + '！</b><small>提示: 只有登录后才可以抓取几乎所有画板哦。</small><br/>',
'<b>请选择以下两种功能按钮：</b><br/>',
'1. <i>开始下载</i>： <br/> 点击此按钮将开始抓取画板图片，抓取完成后弹出下载方式，请选择某种方式后完成当前画板下载。<br/>',
'2. <i>跳过</i>： <br/> 即忽略此画板，并关闭本窗口。<br/>',
'<br/><p><b>请注意：</b>用户存在多个画板时会弹出多个窗口，请移动或最小化当前窗口以显示其他窗口。</p>',
'<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></div>'
].join('');
layer.open({
type: 1,
title: "花瓣网用户抓取：" + user_id,
content: msg,
closeBtn: false,
shadeClose: false,
shade: 0,
btn: ['开始下载', '跳过'],
btnAlign: 'c',
maxmin: true,
zIndex: layer.zIndex,
success: function(layero) {
layer.setTop(layero);
},
yes: function(index, layero) {
//按钮【开始下载】的回调
layer.close(index);
downloadBoard(board_id);
},
btn2: function(index, layero) {
//按钮【跳过】的回调
layer.close(index);
}
});
});
}
//画板解析与下载
function downloadBoard(board_id) {
if (board_id) {
console.group("花瓣网下载-当前画板：" + board_id);
var limit = 100;
//get first pin data
$.ajax({
url: window.location.protocol + '//huaban.com/boards/' + board_id,
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,
retry = Math.ceil(pin_number / limit);
console.debug("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 = window.location.protocol + "//huaban.com/boards/" + board_id + "/?max=" + last_pin + "&limit=" + limit + "&wfl=1";
$.ajax({
url: board_next_url,
async: false,
success: function(res) {
//console.log(res);
var board_next_data = res.board;
board_pins = board_pins.concat(board_next_data.pins);
console.debug("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("画板" + board_id + "共抓取" + board_pins.length + "个pin");
var pins = board_pins.map(function(pin) {
return {
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
interactiveBoard(board_id, pins, pin_number);
}
} catch (e) {
console.error(e);
}
}
});
console.groupEnd();
}
}
//用户解析与下载
function downloadUser(user_id) {
if (user_id) {
console.group("花瓣网下载-当前用户：" + user_id);
var limit = 10;
//get first board data
$.ajax({
url: window.location.protocol + '//huaban.com/' + user_id,
async: false,
success: function(res) {
try {
//console.log(res);
if (res.hasOwnProperty("user") === true) {
var user_data = res.user,
board_number = user_data.board_count,
board_ids = user_data.boards,
retry = Math.ceil(board_number / limit);
console.debug("Current user <" + user_id + "> boards number is " + board_number + ", first boards number is " + board_ids.length);
if (board_ids.length < board_number) {
var last_board = board_ids[board_ids.length - 1].board_id;
while (1 <= retry) {
//get ajax board data
var user_next_url = window.location.protocol + "//huaban.com/" + user_id + "/?max=" + last_board + "&limit=" + limit + "&wfl=1";
$.ajax({
url: user_next_url,
async: false,
success: function(res) {
//console.log(res);
var user_next_data = res.user.boards;
board_ids = board_ids.concat(user_next_data);
console.debug("ajax load user with board_id " + last_board + ", get boards number is " + user_next_data.length + ", merged");
if (user_next_data.length === 0) {
retry = 0;
return false;
}
last_board = user_next_data[user_next_data.length - 1].board_id;
}
});
retry -= 1;
}
}
console.log("用户" + user_id + "共抓取" + board_ids.length + "个board");
var boards = board_ids.map(function(board) {
return board.board_id;
});
//交互确定下载方式
interactiveUser(user_id, boards);
}
} catch (e) {
console.error(e);
}
}
});
console.groupEnd();
}
}
/*
分出不同模块：用户、画板
*/
if (window.location.pathname.split('/')[1] === "boards") {
//当前在画板地址下
var board_id = window.location.pathname.split('/')[2];
//定位
var pab = document.getElementById('page').getElementsByClassName('action-buttons')[0];
//插入下载画板按钮
if (isContains(pab.innerText, "下载此画板") === false) {
pab.insertAdjacentHTML('afterbegin', '<a href="#" id="downloadBoard" class="btn rbtn"><span class="text"> 下载此画板</span></a>');
}
//监听画板点击下载事件
document.getElementById("downloadBoard").onclick = function() {
downloadBoard(board_id);
};
} else {
//当前在用户主页下
if (hasId("user_page") === true) {
//根据user_page确定了是在用户主页
var user_id = window.location.pathname.split('/')[1];
if (arrayContains(["all", "discovery", "favorite", "categories", "apps", "about", "search", "activities", "settings", "users"], user_id) === false) {
//定位
var uab = document.getElementById('user_page').getElementsByClassName('action-buttons')[0];
//插入下载画板按钮
if (isContains(uab.innerText, "下载此用户") === false) {
uab.insertAdjacentHTML('afterbegin', '<a href="#" id="downloadUser" class="btn rbtn"><span class="text"> 下载此用户</span></a>');
}
//监听用户点击下载事件
document.getElementById("downloadUser").onclick = function() {
downloadUser(user_id);
};
}
}
}
})();