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  • html加水印及禁右键

html加水印及禁右键

遇到的一个需求,记录一下

js加水印(网上找的)

function watermark(settings) {
    //默认设置
    var defaultSettings = {
        watermark_txt:"text",
		watermark_x:1,//水印起始位置x轴坐标
		watermark_y:1,//水印起始位置Y轴坐标  window.body.clientHeight/2
		watermark_rows:20,//水印行数
		watermark_cols:20,//水印列数
		watermark_x_space:50,//水印x轴间隔
		watermark_y_space:50,//水印y轴间隔
		watermark_color:'#000000',//水印字体颜色
		watermark_alpha:0.2,//水印透明度
		watermark_fontsize:'120px',//水印字体大小
		watermark_font:'宋体',//水印字体
		watermark_width:window.innerWidth-200,//水印宽度
		watermark_height:450,//水印长度
		watermark_angle:25//水印倾斜度数
    };
    if (arguments.length === 1 && typeof arguments[0] === "object") {
        var src = arguments[0] || {};
        for (key in src) {
            if (src[key] && defaultSettings[key] && src[key] === defaultSettings[key]) continue;
            else if (src[key]) defaultSettings[key] = src[key];
        }
    }
    var oTemp = document.createDocumentFragment();
    //获取页面最大宽度
    var page_width = Math.max(document.body.scrollWidth, document.body.clientWidth);
    var cutWidth = page_width * 0.0150;
    var page_width = page_width - cutWidth;
    //获取页面最大高度
    var page_height = Math.max(document.body.scrollHeight, document.body.clientHeight) + 450;
    page_height = Math.max(page_height, window.innerHeight - 30);
    //如果将水印列数设置为0,或水印列数设置过大,超过页面最大宽度,则重新计算水印列数和水印x轴间隔
    if (defaultSettings.watermark_cols == 0 || (parseInt(defaultSettings.watermark_x + defaultSettings.watermark_width * defaultSettings.watermark_cols + defaultSettings.watermark_x_space * (defaultSettings.watermark_cols - 1)) > page_width)) {
        defaultSettings.watermark_cols = parseInt((page_width - defaultSettings.watermark_x + defaultSettings.watermark_x_space) / (defaultSettings.watermark_width + defaultSettings.watermark_x_space));
        defaultSettings.watermark_x_space = parseInt((page_width - defaultSettings.watermark_x - defaultSettings.watermark_width * defaultSettings.watermark_cols) / (defaultSettings.watermark_cols - 1));
    }
    //如果将水印行数设置为0,或水印行数设置过大,超过页面最大长度,则重新计算水印行数和水印y轴间隔
    if (defaultSettings.watermark_rows == 0 || (parseInt(defaultSettings.watermark_y + defaultSettings.watermark_height * defaultSettings.watermark_rows + defaultSettings.watermark_y_space * (defaultSettings.watermark_rows - 1)) > page_height)) {
        defaultSettings.watermark_rows = parseInt((defaultSettings.watermark_y_space + page_height - defaultSettings.watermark_y) / (defaultSettings.watermark_height + defaultSettings.watermark_y_space));
        defaultSettings.watermark_y_space = parseInt(((page_height - defaultSettings.watermark_y) - defaultSettings.watermark_height * defaultSettings.watermark_rows) / (defaultSettings.watermark_rows - 1));
    }
    var x;
    var y;
    for (var i = 0; i < defaultSettings.watermark_rows; i++) {
        y = defaultSettings.watermark_y + (defaultSettings.watermark_y_space + defaultSettings.watermark_height) * i;
        for (var j = 0; j < defaultSettings.watermark_cols; j++) {
            x = defaultSettings.watermark_x + (defaultSettings.watermark_width + defaultSettings.watermark_x_space) * j;
            var mask_div = document.createElement('div');
            mask_div.id = 'mask_div' + i + j;
            mask_div.className = 'mask_div';
            mask_div.appendChild(document.createTextNode(defaultSettings.watermark_txt));
            //设置水印div倾斜显示
            mask_div.style.webkitTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.MozTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.msTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.OTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.transform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
            mask_div.style.visibility = "";
            mask_div.style.position = "absolute";
            mask_div.style.left = x + 'px';
            mask_div.style.top = y + 'px';
            mask_div.style.overflow = "hidden";
            mask_div.style.zIndex = "9999";
            //让水印不遮挡页面的点击事件
            mask_div.style.pointerEvents = 'none';
            mask_div.style.opacity = defaultSettings.watermark_alpha;
            mask_div.style.fontSize = defaultSettings.watermark_fontsize;
            mask_div.style.fontFamily = defaultSettings.watermark_font;
            mask_div.style.color = defaultSettings.watermark_color;
            mask_div.style.textAlign = "center";
            mask_div.style.width = defaultSettings.watermark_width + 'px';
            mask_div.style.height = defaultSettings.watermark_height + 'px';
            mask_div.style.display = "block";
            oTemp.appendChild(mask_div);
        };
    };
    document.body.appendChild(oTemp);
}

js禁右键(网上找的)

document.oncontextmenu = function(){return false}

java

import java.io.*;
import java.util.ArrayList;
import java.util.List;


public class ExcelFileIO {

    /**
     * 加水印及禁右键
     * @param folder :文件夹地址
     * @param text :水印内容
     */
    public static void addWaterMark(String folder,String text){
        try {
            List<String> fileList = new ArrayList<String>();
            getFilesList(new File(folder),fileList);
            for (String url:fileList){
                fileWatermarkIO(url,text);
                fileForbiddenIO(url);
            }
        }catch (Exception e){
            e.printStackTrace();
        }
    }

    /**
     * 禁右键
     * @param folder 文件夹地址
     */
    public static void addForbidden(String folder){
        try {
            List<String> fileList = new ArrayList<String>();
            getFilesList(new File(folder),fileList);
            for (String url:fileList){
                fileForbiddenIO(url);
            }
        }catch (Exception e){
            e.printStackTrace();
        }
    }


    //读
    public static String fileInput(String url) {
        try {
            FileInputStream fis = new FileInputStream(url);
            BufferedInputStream bis = new BufferedInputStream(fis);
            String content = null;
            //字符缓冲区
            byte[] buffer = new byte[10240];
            int flag = 0;
            while ((flag = bis.read(buffer)) != -1) {
                content += new String(buffer, 0, flag);
            }
            //关闭流
            bis.close();
            return content;
        } catch (
                Exception e) {
            e.printStackTrace();
        }
        return "";
    }

    //写
    public static Boolean fileOutput(String url, String context){
        Boolean result = false;
        try {
            FileOutputStream fos=new FileOutputStream(url);
            BufferedOutputStream bos=new BufferedOutputStream(fos);
            String content=context;
            bos.write(content.getBytes(),0,content.getBytes().length);
            bos.flush();
            bos.close();
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }


    //加水印
    public static Boolean fileWatermarkIO(String fileUrl, String waterMarkText) throws FileNotFoundException, UnsupportedEncodingException {
        //读出内容
        String textHtml = fileInput(fileUrl);
        //水印的js
        String context ="\n<script type=\"text/javascript\">\n" +
                "window.onload=function(){\n" +
                "var defaultSettings = {\n" +
                "        watermark_txt:\"" + waterMarkText + "\",\n" +
                "\t\twatermark_x:(100),\n" +
                "\t\twatermark_y:(window.innerHeight/2-60),\n" +
                "\t\twatermark_rows:1,\n" +
                "\t\twatermark_cols:1,\n" +
                "\t\twatermark_x_space:50,\n" +
                "\t\twatermark_y_space:50,\n" +
                "\t\twatermark_color:'#000000',\n" +
                "\t\twatermark_alpha:0.2,\n" +
                "\t\twatermark_fontsize:'120px',\n" +
                "\t\twatermark_font:'宋体',\n" +
                "\t\twatermark_width:window.innerWidth-200,\n" +
                "\t\twatermark_height:450,\n" +
                "\t\twatermark_angle:25\n" +
                "    };\n" +
                "    if (arguments.length === 1 && typeof arguments[0] === \"object\") {\n" +
                "        var src = arguments[0] || {};\n" +
                "        for (key in src) {\n" +
                "            if (src[key] && defaultSettings[key] && src[key] === defaultSettings[key]) continue;\n" +
                "            else if (src[key]) defaultSettings[key] = src[key];\n" +
                "        }\n" +
                "    }\n" +
                "    var oTemp = document.createDocumentFragment();\n" +
                "    var page_width = Math.max(document.body.scrollWidth, document.body.clientWidth);\n" +
                "    var cutWidth = page_width * 0.0150;\n" +
                "    var page_width = page_width - cutWidth;\n" +
                "    var page_height = Math.max(document.body.scrollHeight, document.body.clientHeight) + 450;\n" +
                "    page_height = Math.max(page_height, window.innerHeight - 30);\n" +
                "    var x;\n" +
                "    var y;\n" +
                "    for (var i = 0; i < defaultSettings.watermark_rows; i++) {\n" +
                "        y = defaultSettings.watermark_y + (defaultSettings.watermark_y_space + defaultSettings.watermark_height) * i;\n" +
                "        for (var j = 0; j < defaultSettings.watermark_cols; j++) {\n" +
                "            x = defaultSettings.watermark_x + (defaultSettings.watermark_width + defaultSettings.watermark_x_space) * j;\n" +
                "            var mask_div = document.createElement('div');\n" +
                "            mask_div.id = 'mask_div' + i + j;\n" +
                "            mask_div.className = 'mask_div';\n" +
                "            mask_div.appendChild(document.createTextNode(defaultSettings.watermark_txt));\n" +
                "            mask_div.style.webkitTransform = \"rotate(-\" + defaultSettings.watermark_angle + \"deg)\";\n" +
                "            mask_div.style.MozTransform = \"rotate(-\" + defaultSettings.watermark_angle + \"deg)\";\n" +
                "            mask_div.style.msTransform = \"rotate(-\" + defaultSettings.watermark_angle + \"deg)\";\n" +
                "            mask_div.style.OTransform = \"rotate(-\" + defaultSettings.watermark_angle + \"deg)\";\n" +
                "            mask_div.style.transform = \"rotate(-\" + defaultSettings.watermark_angle + \"deg)\";\n" +
                "            mask_div.style.visibility = \"\";\n" +
                "            mask_div.style.position = \"absolute\";\n" +
                "            mask_div.style.left = x + 'px';\n" +
                "            mask_div.style.top = y + 'px';\n" +
                "            mask_div.style.overflow = \"hidden\";\n" +
                "            mask_div.style.zIndex = \"9999\";\n" +
                "            mask_div.style.pointerEvents = 'none';\n" +
                "            mask_div.style.opacity = defaultSettings.watermark_alpha;\n" +
                "            mask_div.style.fontSize = defaultSettings.watermark_fontsize;\n" +
                "            mask_div.style.fontFamily = defaultSettings.watermark_font;\n" +
                "            mask_div.style.color = defaultSettings.watermark_color;\n" +
                "            mask_div.style.textAlign = \"center\";\n" +
                "            mask_div.style.width = defaultSettings.watermark_width + 'px';\n" +
                "            mask_div.style.height = defaultSettings.watermark_height + 'px';\n" +
                "            mask_div.style.display = \"block\";\n" +
                "            oTemp.appendChild(mask_div);\n" +
                "        };\n" +
                "    };\n" +
                "    document.body.appendChild(oTemp);\n" +
                "   }\n" +
                "</script>";
        //用标签锁定添加位置
        String indexStr = "</body>";
        //组装
        String newText = textHtml.replace(indexStr,indexStr+context);
        //读的时候出现的问题,需要去除
        newText = newText.replaceAll("null","");
        //清空源文件里的内容
        new PrintWriter(fileUrl,"UTF-8");
        //写入
        return fileOutput(fileUrl,newText);
    }

    //禁用右键
    public static Boolean fileForbiddenIO(String fileUrl) throws FileNotFoundException, UnsupportedEncodingException {
        String textHtml = fileInput(fileUrl);
        String context ="\ndocument.oncontextmenu = function(){return false}";
        String indexStr = "<script language=\"JavaScript\">";
        String newText;
        if (textHtml.indexOf(indexStr)==-1){//如果没有script就添加
            context ="\n<script type=\"text/javascript\">\n" +
                    "document.oncontextmenu = function(){return false}\n"+
                    "</script>";
            indexStr = "</body>";
            newText = textHtml.replace(indexStr,indexStr+context);
        }else {
            newText = textHtml.replace(indexStr,indexStr+context);
        }
        newText = newText.replaceAll("null","");
        new PrintWriter(fileUrl,"UTF-8");
        return fileOutput(fileUrl,newText);
    }

    //获取文件路径数组
    public static void getFilesList(File filesFolder, List<String> fileNames){
        if (!filesFolder.exists() || !filesFolder.isDirectory()) {
            return;
        }
        String[] files = filesFolder.list();
        for (int i = 0; i < files.length; i++) {
            File file = new File(filesFolder, files[i]);
            if (file.isFile()) {//是文件
                if (file.getName().endsWith(".htm")||file.getName().endsWith(".html")){//如果后缀符合储存
                    fileNames.add(filesFolder + file.separator + file.getName());
                }
            } else {//是目录
                getFilesList(file, fileNames);
            }
        }
    }
}

 
出处:
https://www.cnblogs.com/fengdebian/p/15747766.html

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