jsp與JAVA

Question

我要如何利用JSP
去讀取 ABC.java這個檔
該打些什麼指令之類的
能寫出來給我看嗎
在利用網頁將 ABC.java這個檔秀出在網頁上

Answer 1

<%@page import="bao.ABC"%>

Answer 2

首先,你要把你的java文件定义在一个包(package 包名)里,然后通过<%@page import="包名.类名"%>或<%@page import="包名.*"%>  来引用你要用的class文件

Answer 3

譬如我package 名為 abc  java為def 
要打成<%@page import="abc.def"%>這樣嗎不過要怎麼把def.java檔將它顯示出來
我還是不會

Answer 4

如果以下是我的JAVA檔   def
import com.drew.metadata.*;
import com.drew.metadata.exif.*;
import com.drew.imaging.jpeg.JpegProcessingException;
import java.io.*;
import java.util.Iterator;public class EXIFReader { public static void main(String args[]) throws FileNotFoundException {
  File f = new File("c:\\b.jpg");
  try {
   ExifReader er = new ExifReader(f);
   Metadata exif = er.extract();
   Iterator itr = exif.getDirectoryIterator();
   while (itr.hasNext()) {
    Directory directory = (Directory) itr.next();    System.out.println("EXIF版本：" + directory.getString(ExifDirectory.TAG_EXIF_VERSION));   
    System.out.println("相機品牌：" + directory.getString(ExifDirectory.TAG_MAKE));   
    System.out.println("像機號碼：" + directory.getString(ExifDirectory.TAG_MODEL));   
    System.out.println("光 圈 值：" + directory.getString(ExifDirectory.TAG_FNUMBER));   
    System.out.println("快    門：" + directory.getString(ExifDirectory.TAG_EXPOSURE_TIME));   
    System.out.println("感 光 度：" + directory.getString(ExifDirectory.TAG_ISO_EQUIVALENT));
    System.out.println("軟    件：" + directory.getString(ExifDirectory.TAG_SOFTWARE)); 
    System.out.println("原始拍攝時間：" + directory.getString(ExifDirectory.TAG_DATETIME_ORIGINAL));
    System.out.println("數字化時間：" + directory.getString(ExifDirectory.TAG_DATETIME_DIGITIZED));
    System.out.println("方    向：" + directory.getString(ExifDirectory.TAG_ORIENTATION));
    System.out.println("圖片寬度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_WIDTH));
    System.out.println("圖片高度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_HEIGHT));
    System.out.println("水平分辨率：" + directory.getString(ExifDirectory.TAG_X_RESOLUTION));
    System.out.println("垂直分辨率：" + directory.getString(ExifDirectory.TAG_Y_RESOLUTION));
    System.out.println("垂直分辨率：" + directory.getString(ExifDirectory.TAG_EXPOSURE_BIAS));
    break;  
    /*Iterator tags = directory.getTagIterator();
    while (tags.hasNext()) {
     Tag tag = (Tag) tags.next();
     System.out.println(tag);
    }
    if (directory.hasErrors()) {
     Iterator errors = directory.getErrors();
     while (errors.hasNext()) {
      System.out.println("ERROR:   " + errors.next());
     }
    }*/
   }
  } catch (JpegProcessingException e) {
   System.err.println("not   jpeg   file");
  } }} 
------------------------------------------------------------------
以下是JSPpackage 名為 abc  java為def 
要打成 <%@page import="abc.def"%>這樣嗎不過要怎麼把def.java檔將它顯示出來 
    System.out.println("EXIF版本：" + directory.getString(ExifDirectory.TAG_EXIF_VERSION));   
    System.out.println("相機品牌：" + directory.getString(ExifDirectory.TAG_MAKE));   
    System.out.println("像機號碼：" + directory.getString(ExifDirectory.TAG_MODEL));   
    System.out.println("光 圈 值：" + directory.getString(ExifDirectory.TAG_FNUMBER));   
    System.out.println("快    門：" + directory.getString(ExifDirectory.TAG_EXPOSURE_TIME));   
    System.out.println("感 光 度：" + directory.getString(ExifDirectory.TAG_ISO_EQUIVALENT));
    System.out.println("軟    件：" + directory.getString(ExifDirectory.TAG_SOFTWARE)); 
    System.out.println("原始拍攝時間：" + directory.getString(ExifDirectory.TAG_DATETIME_ORIGINAL));
    System.out.println("數字化時間：" + directory.getString(ExifDirectory.TAG_DATETIME_DIGITIZED));
    System.out.println("方    向：" + directory.getString(ExifDirectory.TAG_ORIENTATION));
    System.out.println("圖片寬度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_WIDTH));
    System.out.println("圖片高度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_HEIGHT));
    System.out.println("水平分辨率：" + directory.getString(ExifDirectory.TAG_X_RESOLUTION));
    System.out.println("垂直分辨率：" + directory.getString(ExifDirectory.TAG_Y_RESOLUTION));
    System.out.println("垂直分辨率：" + directory.getString(ExifDirectory.TAG_EXPOSURE_BIAS));
怎麼將這些內容印出

Answer 5

sorry = =
如果以下是我的JAVA檔  def 
import com.drew.metadata.*; 
import com.drew.metadata.exif.*; 
import com.drew.imaging.jpeg.JpegProcessingException; 
import java.io.*; 
import java.util.Iterator; public class EXIFReader { public static void main(String args[]) throws FileNotFoundException { 
  File f = new File("c:\\b.jpg"); 
  try { 
  ExifReader er = new ExifReader(f); 
  Metadata exif = er.extract(); 
  Iterator itr = exif.getDirectoryIterator(); 
  while (itr.hasNext()) { 
    Directory directory = (Directory) itr.next();     System.out.println("EXIF版本：" + directory.getString(ExifDirectory.TAG_EXIF_VERSION));  
    System.out.println("相机品牌：" + directory.getString(ExifDirectory.TAG_MAKE));  
    System.out.println("像机号码：" + directory.getString(ExifDirectory.TAG_MODEL));  
    System.out.println("光 圈 值：" + directory.getString(ExifDirectory.TAG_FNUMBER));  
    System.out.println("快    门：" + directory.getString(ExifDirectory.TAG_EXPOSURE_TIME));  
    System.out.println("感 光 度：" + directory.getString(ExifDirectory.TAG_ISO_EQUIVALENT)); 
    System.out.println("软    件：" + directory.getString(ExifDirectory.TAG_SOFTWARE)); 
    System.out.println("原始拍摄时间：" + directory.getString(ExifDirectory.TAG_DATETIME_ORIGINAL)); 
    System.out.println("数字化时间：" + directory.getString(ExifDirectory.TAG_DATETIME_DIGITIZED)); 
    System.out.println("方    向：" + directory.getString(ExifDirectory.TAG_ORIENTATION)); 
    System.out.println("图片宽度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_WIDTH)); 
    System.out.println("图片高度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_HEIGHT)); 
    System.out.println("水平分辨率：" + directory.getString(ExifDirectory.TAG_X_RESOLUTION)); 
    System.out.println("垂直分辨率：" + directory.getString(ExifDirectory.TAG_Y_RESOLUTION)); 
    System.out.println("垂直分辨率：" + directory.getString(ExifDirectory.TAG_EXPOSURE_BIAS)); 
    break;   
    /*Iterator tags = directory.getTagIterator(); 
    while (tags.hasNext()) { 
    Tag tag = (Tag) tags.next(); 
    System.out.println(tag); 
    } 
    if (directory.hasErrors()) { 
    Iterator errors = directory.getErrors(); 
    while (errors.hasNext()) { 
      System.out.println("ERROR:  " + errors.next()); 
    } 
    }*/ 
  } 
  } catch (JpegProcessingException e) { 
  System.err.println("not  jpeg  file"); 
  } } } 
------------------------------------------------------------------ 
以下是JSP package 名为 abc  java为def 
要打成 <%@page import="abc.def"%>这样吗不过要怎么把def.java文件将它显示出来 
    System.out.println("EXIF版本：" + directory.getString(ExifDirectory.TAG_EXIF_VERSION));  
    System.out.println("相机品牌：" + directory.getString(ExifDirectory.TAG_MAKE));  
    System.out.println("像机号码：" + directory.getString(ExifDirectory.TAG_MODEL));  
    System.out.println("光 圈 值：" + directory.getString(ExifDirectory.TAG_FNUMBER));  
    System.out.println("快    门：" + directory.getString(ExifDirectory.TAG_EXPOSURE_TIME));  
    System.out.println("感 光 度：" + directory.getString(ExifDirectory.TAG_ISO_EQUIVALENT)); 
    System.out.println("软    件：" + directory.getString(ExifDirectory.TAG_SOFTWARE)); 
    System.out.println("原始拍摄时间：" + directory.getString(ExifDirectory.TAG_DATETIME_ORIGINAL)); 
    System.out.println("数字化时间：" + directory.getString(ExifDirectory.TAG_DATETIME_DIGITIZED)); 
    System.out.println("方    向：" + directory.getString(ExifDirectory.TAG_ORIENTATION)); 
    System.out.println("图片宽度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_WIDTH)); 
    System.out.println("图片高度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_HEIGHT)); 
    System.out.println("水平分辨率：" + directory.getString(ExifDirectory.TAG_X_RESOLUTION)); 
    System.out.println("垂直分辨率：" + directory.getString(ExifDirectory.TAG_Y_RESOLUTION)); 
    System.out.println("垂直分辨率：" + directory.getString(ExifDirectory.TAG_EXPOSURE_BIAS)); 
怎么将这些内容印出