jqGrid表格加水印换背景.docx

Css:.ui-widget-content background: none; /覆盖掉jqGrid自带的背景图片.alpha1background-image:url(/servlet/FileImageCreatorServlet);/此处用的是servlet生成的图片，可以自定义显示内容，也可以自己指定图片，那下面的servlet FileImageCreatorServlet.java就不需要添加了，相对对应的Web.xml也不需要配置了。width:100%; /宽度要设定，否则ie8,ie7会出现透明度失效 filter:alpha(opacity=20); /外层透明度20.alpha2 filter:alpha(opacity=100);/表格背景透明度100.Jsp: /jqGrid表格渲染table，xxxx是jqGrid表格的ID,Ps:还有关于jqgrid 表格一下特殊需求的，可以联系笔者，共同学习。QQ:695004175-如果想自定义图片内容的话，进行以下操作。-Web.xmlWeb.xml中配置生成img的servlet FileImageCreatorServlet com.linkage.bi.powershow.util.FileImageCreatorServlet FileImageCreatorServlet /servlet/FileImageCreatorServlet .java添加servlet FileImageCreatorServlet.java import java.awt.Color;import java.awt.Font;import java.awt.FontMetrics;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.util.Date;import java.util.Properties;import java.util.Random;import javax.imageio.ImageIO;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.linkage.bi.portal.bean.StaffSessBean;import com.linkage.bi.util.DateUtil;import com.linkage.bi.util.SessionInfoUtil;public class FileImageCreatorServlet extends HttpServletprivate String fileName; private static Random rnd = new Random(new Date().getTime();/ 图片宽度private int width = 400;/ 图片高度private int height = 200;/ 外框颜色private Color rectColor = new Color(255, 255, 255);/ 背景色private Color bgColor = new Color(255, 255, 255);/ 干扰线数目private int lineNum = 0;/ 图片格式private String formatName = JPEG;/ 字体颜色private Color fontColor = new Color(0, 0, 0);/ 字体大小private int fontSize = 15;/ 文字旋转的弧度数private double radian = 0;private double rotateX = 0;private double rotateY = 0;/ 缩放private double scale = 1;public static String CONTEXT_PATH = ;/* * 随机获取颜色对象 */private Color getRandomColor(int base, int range)if (base + range) 255)range = 255 - base;int red = base + rnd.nextInt(range);int green = base + rnd.nextInt(range);int blue = base + rnd.nextInt(range);return new Color(red, green, blue);/* * 画干扰线 */private void drawRandomLine(Graphics graph)for (int i = 0; i lineNum; i+)/ 线条的颜色graph.setColor(getRandomColor(100, 155);/ 线条两端坐标值int x1 = rnd.nextInt(width);int y1 = rnd.nextInt(height);int x2 = rnd.nextInt(width);int y2 = rnd.nextInt(height);/ 画线条graph.drawLine(x1, y1, x2, y2);/* * Constructor of the object. */public FileImageCreatorServlet()super();/* * Destruction of the servlet. */public void destroy()super.destroy(); / Just puts destroy string in log/ Put your code here/* * The doGet method of the servlet. * * This method is called when a form has its tag value method equals to get. * * param request the request send by the client to the server * param response the response send by the server to the client * throws ServletException if an error occurred * throws IOException if an error occurred */public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOExceptionprocess(request, response);/* * The doPost method of the servlet. * * This method is called when a form has its tag value method equals to * post. * * param request the request send by the client to the server * param response the response send by the server to the client * throws ServletException if an error occurred * throws IOException if an error occurred */public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOExceptionprocess(request, response);protected void process(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOExceptionBufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);/设置外框颜色 若不设置 则默认白色if (rectColor = null)rectColor = new Color(255, 255, 255);/设置背景颜色 若不设置 则默认黑色if (bgColor = null)bgColor = new Color(0, 0, 0);/ 获取画布Graphics2D g = (Graphics2D)image.getGraphics();/ 画长方形g.setColor(bgColor);g.fillRect(0, 0, width, height);/ 外框g.setColor(rectColor);g.drawRect(0, 0, width - 1, height - 1);/ 画干扰线drawRandomLine(g);String text = getDrawText(request);/ 设置个性化属性this.setWidth(425); / 图片宽度this.setHeight(200); / 图片高度this.setFontColor(new Color(213, 106, 0);/ this.setLineNum(120); /干扰线条数 可以作为验证码图片this.setFontSize(20); / 字体大小this.setBgColor(new Color(255, 255, 255); / 文字旋转this.setRadian(10.0); / 旋转弧度this.setRotateX(this.getWidth() / 5);this.setRotateY(this.getHeight() * 5 / 10);/ 画字符串draw(this, g, text);/ 执行g.dispose();/ 输出图片结果 以文件流的方式输入 若想写入文件目录 第三个参数为文件目录路径ImageIO.write(image, getFormatName(), response.getOutputStream();public String getDrawText(HttpServletRequest request)/根据session信息获得 当前登录员工的名称与工号信息StaffSessBean staffSessBean = SessionInfoUtil.getStaffSessBean(request.getSession();String staffId = staffSessBean.getStaffId();/当前登录员工IDString phoneNum = staffSessBean.getMobilePhone(); /当前登录员工手机号码String now = DateUtil.getInstance().getToday(yyyy-MM-dd HH:mm:ss); /获得当前访问时间StringBuffer text = new StringBuffer();text.append( ID: ).append(staffId).append(n);if(phoneNum = null)text.append( PHONE: ).append().append(n);elsetext.append( PHONE: ).append(phoneNum).append(n);text.append(VISITTIME: ).append(now).append(n);text.append( SYSTEM: ).append(InitParamUtil.BISYS);return text.toString();/* * 在绘画板上绘制字符串 * param creator 图片创建器对象 * param g 绘画板 * param text 待绘制的字符串 */public void draw(FileImageCreatorServlet creator, Graphics2D g, String text)/ 文字旋转g.rotate(Math.toRadians(creator.getRadian(), creator.getRotateX(), creator.getRotateY();g.scale(creator.getScale(), creator.getScale();g.setColor(creator.getFontColor();Font font = new Font(,Font.PLAIN, creator.getFontSize(); /设置字体的样式 ,大小,是否为粗体等等g.setFont(font);FontMetrics fm = g.getFontMetrics(font);int fontHeight = fm.getHeight(); / 字符的高度int offsetLeft = 0;int rowIndex = 1;for (int i = 0; i = (creator.getWidth() - charWidth)rowIndex+;offsetLeft = 0;g.drawString(String.valueOf(c), offsetLeft, rowIndex * fontHeight);offsetLeft += charWidth;/* * Initialization of the servlet. * * throws ServletException if an error occurs */public void init() throws ServletException/ Put your code herepublic String getFileName()return fileName;public void setFileName(String fileName)this.fileName = fileName;public static Random getRnd()return rnd;public static void setRnd(Random rnd)FileImageCreatorServlet.rnd = rnd;public int getWidth()return width;public void setWidth(int width)this.width = width;public int getHeight()return height;public void setHeight(int height)this.height = height;public Color getRectColor()return rectColor;public void setRectColor(Color rectColor)this.rectColor = rectColor;public Color getBgColor()return bgColor;public void setBgColor(Color bgColor)this.bgColor = bgColor;public int getLineNum()return lineNum;public void setLin