动态图文结合输出源代码

package net.merge; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import javax.servlet.ServletException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.util.ParamUtil; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageDecoder; import com.sun.image.codec.jpeg.JPEGImageEncoder; /** * 将文字用指定的字体，颜色和大小，嵌入指定图片的指定位置,调用参数: * text: 　　　要嵌的文字 * imageFile: 　JPG图片的虚拟路径 * x: 　　　　　文字输出的起始X坐标位置 * y: 　　　　　文字输出的起始Y坐标位置 * fontColor: 　字体颜色(例fontColor=FFFFFF) * fontSize: 　字体大小 * fontStyle: 　字体风格(斜体,粗体等) * fontName: 　字体名称(如仿宋体,宋体等) */ public class TextIntoImage extends HttpServlet { private static final String CONTENT_TYPE = "image/jpeg;charset=GB2312"; public void init() throws ServletException { } /** Process the HTTP Get request */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request,response); } //--------------------------------------------------------------------------------------------- /** Process the HTTP Post request */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType(CONTENT_TYPE); String text = ""; //要嵌的文字 String imageFile = ""; //被嵌的图片的虚拟路径 int x = 0; //坐标 int y = 0; String fontColor = ""; //字体颜色 int fontSize = 0; //字体大小 String fontStyle = ""; //字体风格(斜体,粗体等) String fontName = ""; //字体名称 try { //取得参数(ParamUtil类请参看后面附的ParamUtil类代码) text = ParamUtil.getParameter(request,"text"); imageFile = ParamUtil.getParameter(request,"imageFile"); x = ParamUtil.getIntParameter(request,"x",0); y = ParamUtil.getIntParameter(request,"y",0); fontColor = ParamUtil.getParameter(request,"fontColor"); fontSize = ParamUtil.getIntParameter(request,"fontSize",16); fontStyle = ParamUtil.getParameter(request,"fontStyle"); fontName = ParamUtil.getParameter(request,"fontName"); } catch(Exception e) { e.printStackTrace(); } ServletOutputStream output=response.getOutputStream(); if(imageFile.toLowerCase().endsWith(".jpeg")||imageFile.toLowerCase().endsWith(".jpg")) { imageFile = getServletContext().getRealPath(imageFile); System.out.println(imageFile); InputStream imageIn = new FileInputStream(new File(imageFile)); JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(imageIn); BufferedImage image = decoder.decodeAsBufferedImage(); Graphics g=image.getGraphics(); //设置颜色 g.setColor(new Color(Integer.parseInt(fontColor,16))); //设置字体 Font mFont = new Font(fontName,Font.PLAIN,fontSize);//默认字体 if(fontStyle.equalsIgnoreCase("italic")) mFont=new Font(fontName,Font.ITALIC,fontSize); if(fontStyle.equalsIgnoreCase("bold")) mFont=new Font(fontName,Font.BOLD,fontSize); if(fontStyle.equalsIgnoreCase("plain")) mFont=new Font(fontName,Font.PLAIN,fontSize); g.setFont(mFont); //输出文字 g.drawString(text,x,y); //输出数据流 JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(output); encoder.encode(image); imageIn.close(); } output.close(); } }