大家好，又见面了，我是你们的朋友全栈君。
java端加密文件
package enc;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class Enc {
public void encryptFile(){
FileInputStream in = null;
FileOutputStream out = null;
try {
String sourceFileUrl = “H:\\cookie\\app\\src\\main\\assets\\login.js”;
String targetFileUrl = “H:\\cookie\\app\\src\\main\\assets\\login_enc.js”;
in = new FileInputStream(sourceFileUrl);
out = new FileOutputStream(targetFileUrl);
int data = 0;
while ((data=in.read())!=-1){
//将读取到的字节异或上一个数，加密输出
out.write(data^5);
}
}catch (Exception e){
e.printStackTrace();
}finally {
//在finally中关闭开启的流
if (in!=null){
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (out!=null){
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public static void main(String[] args) {
System.out.println(“Hello, world!”);
Enc enc = new Enc();
enc.encryptFile();
}
}
android端解密private static byte[] endecrypt(int seed,byte[] bytes){//seed为加密种子，str为加密对象
for(int i = 0;i
bytes[i] ^= seed;
}
return bytes;
}
// 加载本地 assets 的 js
public static void injectScriptFile(WebView webView, String filePath) {
InputStream input;
try {
input = webView.getContext().getAssets().open(filePath);
byte[] buffer = new byte[input.available()];
input.read(buffer);
input.close();
buffer = endecrypt(5, buffer);
// Log.e(“xxxxx”, new String(buffer));
}catch (IOException e) {
Log.e(TAG, “injectScriptFile: ” + e);
}
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