JSP讀取java檔案

Question

这是java档案
-------------------------------------------------------------------------
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

Answer 1

<%@page import="com.drew.metadata.*; "%>
<%@page import="com.drew.metadata.exif.*; "%>
<%@page import="com.drew.imaging.jpeg.JpegProcessingException"%>
<%@page import="java.util.Iterator"%>
<% 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();     out.print("EXIF版本：" + directory.getString(ExifDirectory.TAG_EXIF_VERSION));  
    out.print("相机品牌：" + directory.getString(ExifDirectory.TAG_MAKE));  
    out.print("像机号码：" + directory.getString(ExifDirectory.TAG_MODEL));  
    out.print("光 圈 值：" + directory.getString(ExifDirectory.TAG_FNUMBER));  
    out.print("快    门：" + directory.getString(ExifDirectory.TAG_EXPOSURE_TIME));  
    out.print("感 光 度：" + directory.getString(ExifDirectory.TAG_ISO_EQUIVALENT)); 
    out.print("软    件：" + directory.getString(ExifDirectory.TAG_SOFTWARE)); 
    out.print("原始拍摄时间：" + directory.getString(ExifDirectory.TAG_DATETIME_ORIGINAL)); 
    out.print("数字化时间：" + directory.getString(ExifDirectory.TAG_DATETIME_DIGITIZED)); 
    out.print("方    向：" + directory.getString(ExifDirectory.TAG_ORIENTATION)); 
    out.print("图片宽度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_WIDTH)); 
    out.print("图片高度：" + directory.getString(ExifDirectory.TAG_EXIF_IMAGE_HEIGHT)); 
    out.print("水平分辨率：" + directory.getString(ExifDirectory.TAG_X_RESOLUTION)); 
    out.print("垂直分辨率：" + directory.getString(ExifDirectory.TAG_Y_RESOLUTION)); 
    out.print(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()) { 
      out.print("ERROR:  " + errors.next()); 
    } 
    }*/ 
  } 
  } catch (JpegProcessingException e) { 
  out.print("not  jpeg  file"); 
  } 
%>大致是这样的没用ide，自己稍微改下

Answer 2

An error occurred at line: 7 in the generated java file
Syntax error on token ";", delete this tokenAn error occurred at line: 8 in the generated java file
Syntax error on token ";", delete this tokenAn error occurred at line: 9 in the generated java file
Only a type can be imported. com.drew.imaging.jpeg.JpegProcessingException resolves to a packageAn error occurred at line: 8 in the jsp file: /test.jsp
File cannot be resolved to a type
5: <%@page import="java.util.Iterator"%> 
6: 
7: 
8: <% File f = new File("c:\\b.jpg"); 
9:   try { 
10:   ExifReader er = new ExifReader(f); 
11:   Metadata exif = er.extract(); 
An error occurred at line: 8 in the jsp file: /test.jsp
File cannot be resolved to a type
5: <%@page import="java.util.Iterator"%> 
6: 
7: 
8: <% File f = new File("c:\\b.jpg"); 
9:   try { 
10:   ExifReader er = new ExifReader(f); 
11:   Metadata exif = er.extract(); 
An error occurred at line: 10 in the jsp file: /test.jsp
ExifReader cannot be resolved to a type
7: 
8: <% File f = new File("c:\\b.jpg"); 
9:   try { 
10:   ExifReader er = new ExifReader(f); 
11:   Metadata exif = er.extract(); 
12:   Iterator itr = exif.getDirectoryIterator(); 
13:   while (itr.hasNext()) { 
An error occurred at line: 10 in the jsp file: /test.jsp
ExifReader cannot be resolved to a type
7: 
8: <% File f = new File("c:\\b.jpg"); 
9:   try { 
10:   ExifReader er = new ExifReader(f); 
11:   Metadata exif = er.extract(); 
12:   Iterator itr = exif.getDirectoryIterator(); 
13:   while (itr.hasNext()) { 
An error occurred at line: 11 in the jsp file: /test.jsp
Metadata cannot be resolved to a type
8: <% File f = new File("c:\\b.jpg"); 
9:   try { 
10:   ExifReader er = new ExifReader(f); 
11:   Metadata exif = er.extract(); 
12:   Iterator itr = exif.getDirectoryIterator(); 
13:   while (itr.hasNext()) { 
14:     Directory directory = (Directory) itr.next(); 
An error occurred at line: 14 in the jsp file: /test.jsp
Directory cannot be resolved to a type
11:   Metadata exif = er.extract(); 
12:   Iterator itr = exif.getDirectoryIterator(); 
13:   while (itr.hasNext()) { 
14:     Directory directory = (Directory) itr.next(); 
15: 
16:     out.print("EXIF版本：" + directory.getString(ExifDirectory.TAG_EXIF_VERSION));  
17:     out.print("相机品牌：" + directory.getString(ExifDirectory.TAG_MAKE));  
An error occurred at line: 14 in the jsp file: /test.jsp
Directory cannot be resolved to a type
11:   Metadata exif = er.extract(); 
12:   Iterator itr = exif.getDirectoryIterator(); 
13:   while (itr.hasNext()) { 
14:     Directory directory = (Directory) itr.next(); 
15: 
16:     out.print("EXIF版本：" + directory.getString(ExifDirectory.TAG_EXIF_VERSION));  
17:     out.print("相机品牌：" + directory.getString(ExifDirectory.TAG_MAKE));  
An error occurred at line: 16 in the jsp file: /test.jsp
ExifDirectory.TAG_EXIF_VERSION cannot be resolved to a type
13:   while (itr.hasNext()) { 
14:     Directory directory = (Directory) itr.next(); 
15: 
16:     out.print("EXIF版本：" + directory.getString(ExifDirectory.TAG_EXIF_VERSION)); Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:316)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:281)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
我用eclipse,搭配tomcat用出现的错误要怎么修改才能显示我要的内容
我的package放在web-inf/src    package为exif 内容为EXIFReader.java
请大家帮忙我

Answer 3

有些包没倒入，都是你自己的类，自己导入一下，还有一些语法错误，这里看不出来，你一点java都不懂吗？自己改一下

Answer 4

请告诉我该如何解决这些错误
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: /test.jsp(7,15) equal symbol expected
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:88)
org.apache.jasper.compiler.Parser.parseAttribute(Parser.java:195)
org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:150)
org.apache.jasper.compiler.Parser.parseAttributes(Parser.java:162)
org.apache.jasper.compiler.ParserController.getPageEncodingForJspSyntax(ParserController.java:451)
org.apache.jasper.compiler.ParserController.determineSyntaxAndEncoding(ParserController.java:392)
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:173)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:103)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:153)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:281)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.16 logs.