package?getPicture;

import?java.io.BufferedInputStream;
import?java.io.BufferedOutputStream;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.net.MalformedURLException;
import?java.net.URL;
import?java.util.ArrayList;
import?java.util.List;
import?org.jsoup.Jsoup;
import?org.jsoup.nodes.Document;
import?org.jsoup.nodes.Element;
import?org.jsoup.select.Elements;

/**
?*??下載圖片Demo
?*??2017-2-10
?*??LingDu
?*/
public?class?GetPicture?{

????/**
?????*?5、下載圖片
?????*?到nipic網(wǎng)站下載圖片
?????*?傳入圖片下載地址即可下載到images目錄下
?????*/
????public?static?void?downloadPic（String?myUrl）?{
????????if?（!myUrl.equals（““））?{
????????????try?{
????????????????URL?url?=?new?URL（myUrl）;
????????????????BufferedInputStream?bis?=?new?BufferedInputStream（url.openConnection（）.getInputStream（））;
????????????????byte?myArray[]?=?new?byte[1024*1024];
????????????????int?len?=?0;
????????????????String?fileName?=?getNameFromUrl（myUrl）;
????????????????//System.out.println（fileName）;
????????????????BufferedOutputStream?bos?=?new?BufferedOutputStream（new?FileOutputStream（“images/“?+?fileName））;
????????????????while（（len?=?bis.read（myArray））?!=?-1）{
????????????????????bos.write（myArray?0?len）;?
????????????????}
????????????????bos.flush（）;
????????????????bos.close（）;
????????????????bis.close（）;
????????????????System.out.println（“圖片：“?+?fileName?+“?------>下載成功！“）;
????????????}?catch?（MalformedURLException?e）?{
????????????????e.printStackTrace（）;
????????????}?catch?（IOException?e）?{
????????????????e.printStackTrace（）;
????????????}
????????}
????}


????/**
?????*?4、將圖片下載地址進(jìn)行切割，得到文件名
?????*?根據(jù)傳入的url地址，獲取文件的名稱
?????*?@param?url
?????*?@return?name
?????*/
????public?static?String?getNameFromUrl（String?url）?{
????????//找到最后一個(gè)?“/“?的位置
????????int?beginIndex?=?url.lastIndexOf（“/“）;
????????//截取?“/“?后面的內(nèi)容
????????String?name?=?url.substring（beginIndex?+?1）;
????????return?name;
????}



????/**
?????*?3、通過子頁面鏈接（圖片網(wǎng)頁）獲取到圖片下載地址
?????*?“http://www.nipic.com/show/16519633.html“
?????*?@return?downloadPicUrl
?????*/
????public?static?List??getPicDownUrlFromAllPicPage（String?url）?{
????????//保存圖片的下載地址
????????List?list?=?new?ArrayList（）;
????????try?{
????????????//通過傳入一個(gè)url打開一個(gè)鏈接并且獲取內(nèi)容，將內(nèi)容存到文件中
????????????Document?doc?=?Jsoup.connect（url）.get（）;
????????????//如果文檔不為空????&&????頁面中沒有出現(xiàn)??“唔，未找到任何頁面?。?！”?則認(rèn)為該頁面是個(gè)正常頁面
????????????if?（doc?!=?null?&&?!Jsoup.connect（url）.get（）.html（）.contains（“唔，未找到任何頁面?。?！“））?{
????????????????//獲取到網(wǎng)頁的唯一的id元素
????????????????Element?element?=?doc.getElementById（“J_worksImg“）;
????????????????//判斷元素不為空?&&?src里面的內(nèi)容不為空
????????????????if?（element?!=?null?&&?!element.attr（“src“）.equals（““））?{
????????????????????//將圖片地址添加到集合中
????????????????????list.add（element.attr（“src“））;
????????????????}
????????????}
????????}?catch?（IOException?e）?{
????????????e.printStackTrace（）;
????????}
????????//http://pic120.nipic.com/file/2017011

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-04-25?17:41??getPicture\
?????目錄???????????0??2018-04-25?16:01??getPicture\build\
?????文件??????????60??2018-04-25?16:01??getPicture\build\built-jar.properties
?????目錄???????????0??2018-04-25?17:04??getPicture\build\classes\
?????文件???????????0??2018-04-25?17:04??getPicture\build\classes\.netbeans_automatic_build
?????文件???????????0??2018-04-25?17:04??getPicture\build\classes\.netbeans_update_resources
?????目錄???????????0??2018-04-25?19:06??getPicture\build\classes\getpicture\
?????文件????????5559??2018-04-25?19:06??getPicture\build\classes\getpicture\GetPicture.class
?????文件??????????52??2018-04-25?17:04??getPicture\build\classes\getpicture\GetPicture.rs
?????目錄???????????0??2018-04-28?22:41??getPicture\build\empty\
?????目錄???????????0??2018-04-25?16:01??getPicture\build\generated-sources\
?????目錄???????????0??2018-04-28?22:41??getPicture\build\generated-sources\ap-source-output\
?????文件????????3615??2018-04-25?15:57??getPicture\build.xml
?????文件??????????85??2018-04-25?15:57??getPicture\manifest.mf
?????目錄???????????0??2018-04-25?15:57??getPicture\nbproject\
?????文件???????79885??2018-04-25?15:57??getPicture\nbproject\build-impl.xml
?????文件?????????475??2018-04-25?15:57??getPicture\nbproject\genfiles.properties
?????目錄???????????0??2018-04-25?19:06??getPicture\nbproject\private\
?????文件?????????111??2018-04-25?15:57??getPicture\nbproject\private\private.properties
?????文件?????????440??2018-04-27?22:17??getPicture\nbproject\private\private.xml
?????文件????????2577??2018-04-25?16:02??getPicture\nbproject\project.properties
?????文件?????????518??2018-04-25?15:57??getPicture\nbproject\project.xml
?????目錄???????????0??2018-04-25?15:57??getPicture\src\
?????目錄???????????0??2018-04-25?17:40??getPicture\src\getpicture\
?????文件????????6886??2018-04-25?19:06??getPicture\src\getpicture\GetPicture.java
?????目錄???????????0??2018-04-28?22:41??getPicture\src\getpicture\images\
?????目錄???????????0??2018-04-28?22:41??getPicture\test\