java 下载百度搜索的图片
自己的一个小小需求，写了小段代码，来下载百度搜索的图片。
import java.io.BufferedInputStream;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.Reader;import java.net.URL;import java.net.URLConnection;import java.util.ArrayList;import java.util.List;import java.util.UUID;import java.util.regex.Matcher;import java.util.regex.Pattern;public class SaveImg {private String webUrl="";private String imgPath = "f:/img";// 保存文件路径private String imgContent = "content.txt";// 保存下载的图片名地址对应 文件名:Url列表public SaveImg(String imgurl) {webUrl=imgurl;}//网页源码到stringpublic String getHtmlCode(String httpUrl) throws IOException {if(httpUrl==null || httpUrl.equals(""))httpUrl=this.webUrl;StringBuffer content = new StringBuffer();URL url = new URL(httpUrl); URLConnection urlconn= url.openConnection();Reader read = new InputStreamReader(new BufferedInputStream(urlconn.getInputStream())); int c;while((c=read.read())!=-1)content.append((char)c);read.close();return content.toString().replaceAll("\\s*", "");}//提取图片url 到listprivate List extractImgUrl(String content){List imgList = new ArrayList();String imgReg="objURL":"http://[\\s\\S]*?(.jpg|.JPG|.png|.PNG|.gif|.GIF)"";Matcher imgurlMatcher =Pattern.compile(imgReg).matcher(content);while (imgurlMatcher.find()) {imgList.add(imgurlMatcher.group().split(""")[2]);}return imgList;}//写图片名，url 到文件。 // imageName:URLprivate void writeNameUrl(List imgUrlList) {try {File filePath = new File(imgPath);if (!filePath.exists())filePath.mkdir();File f = new File(filePath, "content.txt");if (!f.exists())f.createNewFile();BufferedReader input = new BufferedReader(new FileReader(f));StringBuffer s1 = new StringBuffer();String s = new String();while ((s=input.readLine()) != null) {s1.append(s+System.getProperty("line.separator"));}input.close();UUID uuid = null;for(int i=0;i<imgUrlList.size();i++){uuid=UUID.randomUUID();this.saveImg(uuid.toString(),imgUrlList.get(i).toString());//保存图片s1.append(uuid+":"+imgUrlList.get(i)+System.getProperty("line.separator"));}BufferedWriter output = new BufferedWriter(new FileWriter(f));output.write(s1.toString());output.close();} catch (IOException e) {System.err.println(e);}}//保存图片private boolean saveImg(String imgName,String imgUrl){URL url;BufferedInputStream in;FileOutputStream file;try {String fileName = imgName+imgUrl.substring(imgUrl.lastIndexOf("."));url = new URL(imgUrl);in = new BufferedInputStream(url.openStream());file = new FileOutputStream(new File(imgPath,fileName));int end;while ((end = in.read()) != -1) {file.write(end);}file.close();in.close();return true;} catch (FileNotFoundException e) {e.printStackTrace();return false;} catch (IOException e) {e.printStackTrace();return false;}}public static void main(String[] args) {SaveImg sim = new SaveImg("http://image.baidu.com/i?tn=baiduimage&ct=201326592&cl=2&lm=-1&st=-1&fm=result&fr=&sf=1&fmq=1333734805096_R&pv=&ic=0&nc=1&z=&se=1&showtab=0&fb=0&width=&height=&face=0&istype=2&word=%CE%EF%C0%ED%CA%B5%D1%E9&s=0#pn=15");try {sim.writeNameUrl(sim.extractImgUrl(sim.getHtmlCode(null)));} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}