js选择和java图片水印清除

实现网页选中效果,能够选择div中的内容


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selectText('填入id');
function selectText(element) {
var text = document.getElementById(element);
if (document.body.createTextRange) {
var range = document.body.createTextRange();
range.moveToElementText(text);
range.select();
} else if (window.getSelection) {
var selection = window.getSelection();
var range = document.createRange();
range.selectNodeContents(text);
selection.removeAllRanges();
selection.addRange(range);
} else {
alert("none");
}
}

找到一个去除水印的东西记录一下,下面是去除前和去除后,记录下


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public class ImageConverter {
private static List<File> fileList = new ArrayList<File>();

public static void main(String[] args) {
System.out.println("输入需要去水印的图片所在的根目录回车(支持递归子目录):");
Scanner input = new Scanner(System.in);
String dir ="C:\\Users\\zengwei\\Desktop\\112";
String saveDir = "C:\\Users\\zengwei\\Desktop";
System.out.println("输入y开始");
String comfrm = input.nextLine().trim();
if (comfrm.equals("y")) {
convertAllImages(dir, saveDir);
} else {
System.out.println("您输入的不是y程序,程序退出");
}

/*String dir = "E:\\data\\Desktop";
String saveDir = "E:\\data\\Desktop-convert";*/

//replaceFolderImages(dir);
/*String srcFile = "E:\\data\\image\\img38.png";
String dstFile = "E:\\data\\image\\img38.png";
long begin = System.currentTimeMillis();
repleaceColor(srcFile, dstFile);
long time = System.currentTimeMillis() - begin;
System.out.println(time);*/
}

private static void convertAllImages(String dir, String saveDir) {
File dirFile = new File(dir);
File saveDirFile = new File(saveDir);
dir = dirFile.getAbsolutePath();
saveDir = saveDirFile.getAbsolutePath();
loadImages(new File(dir));
for (File file : fileList) {
String filePath = file.getAbsolutePath();

String dstPath = saveDir + filePath.substring(filePath.indexOf(dir) + dir.length(), filePath.length());
System.out.println("converting: " + filePath);
replaceColor(file.getAbsolutePath(), dstPath);
}
}

public static void loadImages(File f) {
if (f != null) {
if (f.isDirectory()) {
File[] fileArray = f.listFiles();
if (fileArray != null) {
for (int i = 0; i < fileArray.length; i++) {
//递归调用
loadImages(fileArray[i]);
}
}
} else {
String name = f.getName();
if (name.endsWith("png") || name.endsWith("jpg")) {
fileList.add(f);
}
}
}
}

private static void replaceFolderImages(String dir) {
File dirFile = new File(dir);
File[] files = dirFile.listFiles(new FileFilter() {
public boolean accept(File file) {
String name = file.getName();
if (name.endsWith("png") || name.endsWith("jpg")) {
return true;
}
return false;
}
});
for (File img : files) {
replaceColor(img.getAbsolutePath(), img.getAbsolutePath());
}
}

private static void replaceColor(String srcFile, String dstFile) {
try {
Color color = new Color(255, 195, 195);
replaceImageColor(srcFile, dstFile, color, Color.WHITE);
} catch (IOException e) {
e.printStackTrace();
}
}

public static void replaceImageColor(String file, String dstFile, Color srcColor, Color targetColor) throws IOException {
URL http;
if (file.trim().startsWith("https")) {
http = new URL(file);
HttpsURLConnection conn = (HttpsURLConnection) http.openConnection();
conn.setRequestMethod("GET");
} else if (file.trim().startsWith("http")) {
http = new URL(file);
HttpURLConnection conn = (HttpURLConnection) http.openConnection();
conn.setRequestMethod("GET");
} else {
http = new File(file).toURI().toURL();
}
BufferedImage bi = ImageIO.read(http.openStream());
if(bi == null){
return;
}

Color wColor = new Color(255, 255, 255);
for (int i = 0; i < bi.getWidth(); i++) {
for (int j = 0; j < bi.getHeight(); j++) {
//System.out.println(bi.getRGB(i, j));
int color = bi.getRGB(i, j);
Color oriColor = new Color(color);
int red = oriColor.getRed();
int greed = oriColor.getGreen();
int blue = oriColor.getBlue();
//粉色
if (greed < 190 || blue < 190) {

} else {
if (red == 255 && greed > 180 && blue > 180) {
bi.setRGB(i, j, wColor.getRGB());
}
}
}
}
String type = file.substring(file.lastIndexOf(".") + 1, file.length());
Iterator<ImageWriter> it = ImageIO.getImageWritersByFormatName(type);
ImageWriter writer = it.next();
File f = new File(dstFile);
f.getParentFile().mkdirs();
ImageOutputStream ios = ImageIO.createImageOutputStream(f);
writer.setOutput(ios);
writer.write(bi);
bi.flush();
ios.flush();
ios.close();
}
}