由于今天我要保存一个网页上的所有图片并做一个ppt，但是这个网页比较蛋疼，是微信上的一个类似于动画的东西，所以没法保存整个网页然后直接取照片，

所以我采用java写了一个程序，采用类似于网络爬虫的思路把照片的抓下来。

网页链接如下

http://irm.infzm.com/topic/liushouh5/?from=timeline&isappinstalled=0

截图如下是一个可以左右翻页的网页

然后抓取图片的关键代码为

public static String getURLContent(String urlStr) {

/** 网络的url地址 */

URL url = null;

/** http连接 */

HttpURLConnection httpConn = null;

/**//** 输入流 */

BufferedReader in = null;

StringBuffer sb = new StringBuffer();

try{

url = new URL(urlStr);

in = new BufferedReader( new InputStreamReader(url.openStream(),"UTF-8") );

String str = null;

while((str = in.readLine()) != null) {

sb.append( str + "\n" );

}

} catch (Exception ex) {

} finally{

try{

if(in!=null) {

in.close();

}

}catch(IOException ex) {

}

}

String result =sb.toString();

// System.out.println(result);

return result;

}以上是获取网页源代码然后可以加以获取图片的链接

public void writeImageFile(BufferedImage bi,String name,String format) throws IOException{

File outputfile = new File(name+format);

ImageIO.write(bi, format, outputfile);

System.out.println("caught");

}

以上是把图片缓存写入磁盘上

public void readNetImage(String netPicture){

try {

URL url = new URL(netPicture);

//打开链接

HttpURLConnection conn = (HttpURLConnection)url.openConnection();

//设置请求方式为"GET"

conn.setRequestMethod("GET");

//超时响应时间为5秒

conn.setConnectTimeout(5 * 1000);

//通过输入流获取图片数据

InputStream inStream = conn.getInputStream();

image = ImageIO.read(inStream);

System.out.println("read");

} catch (IOException e) {

System.err.println("An error occured when loading the image icon...");

}

}

以上是读取网页上的图片

这个java文件：

package spring2;

import java.awt.image.BufferedImage;

import java.io.*;

import java.net.*;

import javax.imageio.ImageIO;

import javax.imageio.stream.ImageInputStream;

public class CatchPic {

BufferedImage image = null;

String picUrl = "http://cnpc.infzm.com/mostnorth/src/static/image/";

/**

* 程序中访问http数据接口

*/

public static String getURLContent(String urlStr) {

/** 网络的url地址 */

URL url = null;

/** http连接 */

HttpURLConnection httpConn = null;

/**//** 输入流 */

BufferedReader in = null;

StringBuffer sb = new StringBuffer();

try{

url = new URL(urlStr);

in = new BufferedReader( new InputStreamReader(url.openStream(),"UTF-8") );

String str = null;

while((str = in.readLine()) != null) {

sb.append( str + "\n" );

}

} catch (Exception ex) {

} finally{

try{

if(in!=null) {

in.close();

}

}catch(IOException ex) {

}

}

String result =sb.toString();

// System.out.println(result);

return result;

}

public static void main(String[] args){

// String temp = getURLContent("http://www.weather.com.cn/weather/101120101.shtml"); //jinan

// String temp = getURLContent("http://www.weather.com.cn/weather1d/101210101.shtml"); //hangzhou

String url = "http://irm.infzm.com/topic/liushouh5/?from=timeline&isappinstalled=0";

String temp = getURLContent(url);

new CatchPic().findAllPic("jpg");

}

public void findAllPic(String format){

String url = "http://irm.infzm.com/topic/liushouh5/?from=timeline&isappinstalled=0";

String temp = getURLContent(url);

int max = temp.lastIndexOf(format);

int index=0;

while(index

{

int one = temp.indexOf(format, index+1);

index = one;

while(temp.charAt(one--)!='/');

String test = temp.substring(one+2, index);

readNetImage(picUrl+test+format);

System.out.println(test+"\t"+picUrl+test+format);

try {

writeImageFile(image,test,format);

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

public void writeImageFile(BufferedImage bi,String name,String format) throws IOException{

File outputfile = new File(name+format);

ImageIO.write(bi, format, outputfile);

System.out.println("caught");

}

public void readNetImage(String netPicture){

try {

URL url = new URL(netPicture);

//打开链接

HttpURLConnection conn = (HttpURLConnection)url.openConnection();

//设置请求方式为"GET"

conn.setRequestMethod("GET");

//超时响应时间为5秒

conn.setConnectTimeout(5 * 1000);

//通过输入流获取图片数据

InputStream inStream = conn.getInputStream();

image = ImageIO.read(inStream);

System.out.println("read");

} catch (IOException e) {

System.err.println("An error occured when loading the image icon...");

}

}

void special(String format){

String url = "http://irm.infzm.com/topic/liushouh5/?from=timeline&isappinstalled=0";

String temp = getURLContent(url);

int max = temp.lastIndexOf(format);

int index = max;

while(temp.charAt(max--)!='/');

String test = temp.substring(max+2, index);

readNetImage(picUrl+test+format);

System.out.println(test+"\t"+picUrl+test+format);

try {

writeImageFile(image,test,format);

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

运行后保存的图片：

ps如果要应用到其他网页需要改动一些东西，这个程序针对这个网页http://irm.infzm.com/topic/liushouh5/?from=timeline&isappinstalled=0做了一些优化