小问题，在线解决给分

[yyqllxh2004]

你好，已经解决了在WINDOW下，我移到LINUX下又不好用了,说我没有找到java.awt.*这个类？我的LINUX下是jdk1.4，TOMCAT5啊

<%@ page contentType="image/jpeg" import="java.awt.*,java.awt.image.*,java.util.*,javax.imageio.*" %>
<%!
Color getRandColor(int fc,int bc){//给定范围获得随机颜色
Random random = new Random();
if(fc>255) fc=255;
if(bc>255) bc=255;
int r=fc+random.nextInt(bc-fc);
int g=fc+random.nextInt(bc-fc);
int b=fc+random.nextInt(bc-fc);
return new Color(r,g,b);
}
%>
<%
//设置页面不缓存
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);

// 在内存中创建图象
int width=60, height=20;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

// 获取图形上下文
Graphics g = image.getGraphics();

//生成随机类
Random random = new Random();

// 设定背景色
g.setColor(getRandColor(200,250));
g.fillRect(0, 0, width, height);

//设定字体
g.setFont(new Font("Times New Roman",Font.PLAIN,18));

//画边框
//g.setColor(new Color());
//g.drawRect(0,0,width-1,height-1);


// 随机产生155条干扰线，使图象中的认证码不易被其它程序探测到
g.setColor(getRandColor(160,200));
for (int i=0;i<155;i++)
{
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt(12);
int yl = random.nextInt(12);
g.drawLine(x,y,x+xl,y+yl);
}


String sRand="";
for (int i=0;i<4;i++){
String rand=String.valueOf(random.nextInt(10));
sRand+=rand;
// 将认证码显示到图象中
g.setColor(new Color(20+random.nextInt(110),20+random.nextInt(110),20+random.nextInt(110)));

g.drawString(rand,13*i+6,16);
}

// 将认证码存入SESSION
session.setAttribute("rand",sRand);


// 图象生效
g.dispose();

// 输出图象到页面
javax.imageio.ImageIO.write(image, "JPEG", response.getOutputStream());

%>

出错信息如下

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.addrbookmysql.pic_jsp._jspService(pic_jsp.java:127)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root cause

java.lang.NoClassDefFoundError
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:130)
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62)
java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1053)
java.awt.image.BufferedImage.getGraphics(BufferedImage.java:1043)
org.apache.jsp.addrbookmysql.pic_jsp._jspService(pic_jsp.java:72)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


note The full stack trace of the root cause is available in the Apache Tomcat/5.0.27 logs.

[iversonxk]

我觉得也是配置的问题

[cn086]

up

[yyqllxh2004]

我不熟悉LINUX下如何操作？请写出具体操作步骤，谢谢

[yyqllxh2004]

java_home设置正确啊，其它的如java.sql.*等就可以找到啊

[ITxiaopang]

UP

[beming]

你可以在Tomcat的启动脚本中定义你的jdk安装路径：JAVA_HOME=你的jdk安装路径

或者你也可以在/etc/profile中export你的JAVA_HOME
同时最好加上PATH=$jJAC$PATH----PATH=$JAVA_HOME\BIN:$PATH

BUZHIDBUZHI不知道为什么，突然间编辑不了上面的内容：
我是说这里最好同时加上：export PATH=%JAVA_HOME%/BIN

[beming]

应该是：PATH=$JAVA_HOME/bin:$PATH
export PATH

[hanbb]

楼上有道理
应该是设置问题！

[yyqllxh2004]

那位用一下在本地，帮我看一下呗

[yyqllxh2004]

http://community.csdn.net/Expert/topic/2899/2899534.xml?temp=.1529047
这个文章说的比较清楚！正在解决中......

[ITxiaopang]

支持一下!

[yyqllxh2004]

顶一下，没有遇到过啊

[yyqllxh2004]

up

[beming]

java_home有没有设置正确啊？

java -version看看