package net.xdevelop.merge;import javax.servlet.*;import javax.servlet.http.*;import java.io.*;import java.util.*;import java.awt.*;import java.awt.image.*;import com.sun.image.codec.jpeg.*;import net.xdevelop.util.paramutil;/** * 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);            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();    }}//////////

import javax.servlet.*;public class paramutil {  /**   * 获得request中指定名称的参数值,若有中文乱码问题请增加转码部分   * @param request servletrequest对象   * @param paramname 参数名称   * @return 如果该变量值存在则返回该值，否则返回""   */  public static string getparameter( servletrequest request, string paramname ) {    string temp = request.getparameter(paramname);    if( temp != null && !temp.equals("") ) {        //若有中文问题，在此添加转码代码，例：temp = new string(temp.getbytes("8859_1"), "gb2312");        return temp;    }    else {      return "";    }  }  /**   * 获得request中的int型参数值   * @param request servletrequest对象   * @param paramname 参数名称   * @param defaultnum 默认值，如果没有返回该值   * @return 如果该参数值存在则返回其转换为int型的值，否则返回defaultnum   */  public static int getintparameter( servletrequest request, string paramname, int defaultnum ) {    string temp = request.getparameter(paramname);    if( temp != null && !temp.equals("") ) {      int num = defaultnum;      try {          num = integer.parseint(temp);      }      catch( exception ignored ) {      }      return num;    }    else {      return defaultnum;    }  }}///////////