由于
notepad
++里面的文字处理有些复杂，我在想能不能用一个java程序来统一处理呢？
尝试了一下，发现不太复杂，Java果然处理各种事情都比较方便。程序如下：
注意在RegExp里面，必须用四个反斜杠\代表一个反斜杠
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package com.pwc;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class WechatMomentDownload {
public static String jsonFile = "C:\Download\exported_sns_gary.json";
public static String outputFolder = "C:\Download\gary_pic\";
public static void main(String[] args) throws IOException {
BufferedReader reader = null;
String sLine = "";
String sContent = "";
String sLink = "";
URL url = null;
String outputFile = "";
ArrayList aLink = new ArrayList();
String Regex1 = "CDATA\[http\:\\\/\\\/(sh)?mmsns([^]]*)\/0\]";
reader = new BufferedReader(
new InputStreamReader(new FileInputStream(new File(jsonFile)), "UTF-8"));
if (reader != null) {
while ((sLine = reader.readLine()) != null) {
sContent = sContent + sLine;
}
reader.close();
}
Pattern pattern = Pattern.compile(Regex1);
Matcher matcher = pattern.matcher(sContent);
int count = 0;
System.out.println("Start processing...");
while(matcher.find()) {
count++;
sLink = sContent.substring(matcher.start() + 6, matcher.end() - 1);
sLink = sLink.replaceAll("\\/", "/");
aLink.add(sLink);
}
System.out.println(count + " pictures were found");
for (String sLinkTemp : aLink) {
url = new URL(sLinkTemp);
DataInputStream dataInputStream = new DataInputStream(url.openStream());
outputFile = outputFolder + count + ".jpg";
FileOutputStream fileOutputStream = new FileOutputStream(new File(outputFile));
ByteArrayOutputStream output = new ByteArrayOutputStream();
System.out.println("Downloading " + sLinkTemp + " to file " + outputFile);
byte[] buffer = new byte[1024];
int length;
while ((length = dataInputStream.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
fileOutputStream.write(output.toByteArray());
dataInputStream.close();
fileOutputStream.close();
count--;
}
System.out.println("End of processing...");
}
}