<%@ 页面 contentType="text/html;charset=gb2312" %>
<%@ 页面语言="java" import="java.util.*" %>
<%@ 页面语言="java" import="java.io.*" %>
<%@ 页面语言="java" import="java.awt.*" %>
<%@ 页面语言="java" import="java.awt.image.*" %>
<%@ 页面语言="java" import="com.sun.image.codec.jpeg.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<html xmlns=" http://www.w3.org/1999/xhtml ">
<头>
<标题> </标题>
<meta name="generator" content="editplus" />
<meta name="author" content="王士强" />
<meta name="keywords" content="王士强" />
<元名称=“描述”内容=“”/>
</头>
<正文>
<%
response.setContentType("text/html;charset=gb2312");
request.setCharacterEncoding("gb2312");
out.print("==================测试缩略图==============");
//----------------------完成上传,开始生成------------------ --------
java.io.File file = new java.io.File("E:\1110168154_58348.jpg");//saveurl); //读入刚才上传的文件
String newurl="E:\1110168154_58348_min.jpg";//request.getRealPath("/")+url+文件名+"_min."+ext; //新的保存地址
图像src = javax.imageio.ImageIO.read(文件); //构造Image对象
浮动标签大小=287;
int old_w=src.getWidth(null); //得到源图宽
int old_h=src.getHeight(null);
int new_w=0;
int new_h=0; //获取来源图长
int 临时大小;
out.print("<br/>旧宽度为:"+old_w+"旧高度为"+old_h+"<br/>");
浮点温度双精度;
如果(旧_w>旧_h){
tempdouble=old_w/tagsize;
}别的{
tempdouble=old_h/tagsize;
}
new_w=Math.round(old_w/tempdouble);
new_h=Math.round(old_h/tempdouble);//计算新图长宽
out.print("新宽度为:"+new_w+" 新高度为"+new_h+"<br/>");
BufferedImage 标签 = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src,0,0,new_w,new_h,null); // 较弱缩小后的图
FileOutputStream newimage=new FileOutputStream(newurl); //输出到文件流
JPEGImageEncoder 编码器 = JPEGCodec.createJPEGEncoder(newimage);
编码器.encode(标签); //近JPEG编码
newimage.close();
/*
*/
%>
</正文>
</html>