📄 制作java应用程序的帮助文件.htm
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Last<BR>目录建好了以后，我们要在Help目录下面写出四个文件：hello.hs，Map.jhm，index.xml以及toc.xml<BR>hello.hs:<BR><?xml
version='1.0' encoding='ISO-8859-1' ?><BR><!DOCTYPE
helpset<BR>PUBLIC "-//Sun Microsystems Inc.//DTD JavaHelp HelpSet
Version
1.0//EN"<BR>"http://java.sun.com/products/javahelp/helpset_1_0.dtd"><BR><BR><helpset
version="1.0"><BR><title>Hello,
JavaHelp</title><BR><maps><BR><mapref
location="Map.jhm"/><BR><homeID>overview</homeID><BR></maps><BR><view><BR><name>TOC</name><BR><label>TOC</label><BR><type>javax.help.TOCView</type><BR><data>toc.xml</data><BR></view><BR><view><BR><name>Index</name><BR><label>Index</label><BR><type>javax.help.IndexView</type><BR><data>index.xml</data><BR></view><BR></helpset><BR>下面是Map.jhm文件的内容：<BR><?xml
version='1.0' encoding='ISO-8859-1' ?><BR><!DOCTYPE
map<BR>PUBLIC "-//Sun Microsystems Inc.//DTD JavaHelp Map Version
1.0//EN"<BR>"http://java.sun.com/products/javahelp/map_1_0.dtd"><BR><BR><map
version="1.0"><BR><mapID target="overview"
url="Hello/overview.htm" /><BR><mapID target="one"
url="Hello/First/one.htm" /><BR><mapID target="two"
url="Hello/First/two.htm" /><BR><mapID target="three"
url="Hello/Last/three.htm" /><BR><mapID target="four"
url="Hello/Last/four.htm"
/><BR></map><BR>下面是index.xml文件的内容：<BR><?xml
version='1.0' encoding='ISO-8859-1' ?><BR><!DOCTYPE
index<BR>PUBLIC "-//Sun Microsystems Inc.//DTD JavaHelp Index
Version
1.0//EN"<BR>"http://java.sun.com/products/javahelp/index_1_0.dtd"><BR><BR><index
version="1.0"><BR><indexitem text="The
First?"><BR><indexitem target="one" text="I'm
One"/><BR><indexitem target="two" text="I'm
Second"/><BR></indexitem><BR><indexitem text="The
Last?"><BR><indexitem target="three" text="We're
Third!"/><BR><indexitem target="four" text="We're
Last"/><BR></indexitem><BR><indexitem target="overview"
text="Overview!!!"/><BR></index><BR><BR>下面是toc.xml文件的内容：<BR><?xml
version='1.0' encoding='ISO-8859-1' ?><BR><!DOCTYPE
toc<BR>PUBLIC "-//Sun Microsystems Inc.//DTD JavaHelp TOC Version
1.0//EN"<BR>"http://java.sun.com/products/javahelp/toc_1_0.dtd"><BR><BR><toc
version="1.0"><BR><tocitem image="toplevelfolder"
target="overview" text="Hello, JavaHelp"><BR><tocitem
text="First Stuff"><BR><tocitem target="one" text="The
One"/><BR><tocitem target="two" text="The
Second"/><BR></tocitem><BR><tocitem text="Last
Stuff"><BR><tocitem target="three" text="What's
Third?"/><BR><tocitem target="four" text="The
End"/><BR></tocitem><BR></tocitem><BR></toc><BR>创建好以上四个文件以后，记得把它们放到help目录下面，<BR>现在需要四个htm文件，把帮助内容写在htm里面，<BR>Hello/overview.htm<BR>Hello/First/one.htm<BR>Hello/First/two.htm<BR>Hello/Last/three.htm<BR>Hello/Last/four.htm<BR>那么现在Help目录下的结构就变成了下面一样：<BR>+
help<BR>hello.hs<BR>index.xml<BR>Map.jhm<BR>toc.xml<BR>+
Hello<BR>overview.htm<BR>+ First<BR>one.htm<BR>two.htm<BR>+
Last<BR>three.htm<BR>four.htm<BR>还记得开始让你下载的JavaHelp吗？解包以后在jh1.1.3\demos\bin目录下面有个hsviewer.jar文件<BR>我们用它来查看帮助文件是否做得完美，将hsviewer.jar加入到classpath里面<BR>假如jh1.1.3解压到了E:\,<BR>set
classpath=%classpath%;E:\jh1.1.3\demos\bin\hsviewer.jar<BR>然后执行：<BR>java
sunw.demo.jhdemo.JHLauncher<BR>有一个图形界面出来，按浏览按钮找到Help\hello.hs文件，按display显示帮助文件。<BR></FONT><FONT
face=arial,sans-serif color=#000000 size=2>helpset显示如下图：<BR><IMG
alt="" hspace=0 src="" align=baseline border=0></FONT></P>
<P><FONT face=arial,sans-serif color=#000000
size=2><BR><BR><STRONG><FONT
color=#ff0033><BR>2，将帮助加到你的应用中来。</FONT></STRONG><BR>本质上，将应用程序和HelpSet联系起来的方法就是<BR>将帮助文件名映射到swing的组件里来。这时你需要jh.jar<BR>这个文件在jh1.1.3\javahelp\lib里面，你必须把它加入classpath<BR>或者是拷贝到jre\lib\ext目录下。如果你用JBuilder，可以在菜单<BR>Tools的Configure
Libraries里面增加一个Lib，选择jh.jar，然后在<BR>Project里面选择使用这个Lib。<BR>javahelp的lib不小，其实核心的三个类HelpSet,
HelpBroker,和CSH<BR>就可以使javahelp运行起来了。<BR>首先导入javahelp的类：<BR>import
javax.help.*;<BR>然后你得找到HelpSet文件，通过包含HelpSet的URL对象<BR>或者使用HelpSet类的findHelpSet方法得到URL对象，<BR>findHelpSet方法通过ClassLoader找到帮助文件。<BR>有了URL对象以后就可以构造一个HelpSet对象了：<BR>import
java.net.*;<BR>...<BR><BR>HelpSet helpset = null;<BR>ClassLoader
loader = null;<BR>URL url = HelpSet.findHelpSet(loader,
"hello.hs");<BR>try {<BR>helpset = new HelpSet(loader, url);<BR>}
catch (HelpSetException e) {<BR>System.err.println("Error
loading");<BR>return;<BR>}<BR>然后你要从helpset得到HelpBroker对象
。<BR>HelpBroker helpbroker =
helpset.createHelpBroker();<BR><BR>最后是帮助跟组件的绑定。<BR>ActionListener
listener = <BR>new
CSH.DisplayHelpFromSource(helpbroker);<BR>overview.addActionListener(listener);<BR><BR><BR><BR>完整代码如下：<BR>import
javax.swing.*;<BR>import java.awt.*;<BR>import
java.awt.event.*;<BR>import javax.help.*;<BR>import
java.net.*;<BR><BR>public class HelloHelp {<BR>public static void
main(String args[]) {<BR>JFrame frame = new JFrame("Hello,
JavaHelp");<BR>frame.setDefaultCloseOperation(<BR>JFrame.EXIT_ON_CLOSE);<BR>Container
content = frame.getContentPane();<BR><BR>JMenuBar menubar = new
JMenuBar();<BR>JMenu helpMenu = new JMenu("Help");<BR>JMenuItem
overview = new JMenuItem("Overview");<BR>JMenuItem specific = new
JMenuItem("Specific");<BR>helpMenu.add(overview);<BR>helpMenu.add(specific);<BR>menubar.add(helpMenu);<BR>frame.setJMenuBar(menubar);<BR><BR>JButton
button1 = new JButton("The Button");<BR>JButton button2 = new
JButton("Context");<BR><BR>content.add(button1,
BorderLayout.NORTH);<BR>content.add(button2,
BorderLayout.SOUTH);<BR><BR>HelpSet helpset = null;<BR>ClassLoader
loader = null;<BR>URL url = HelpSet.findHelpSet(loader, "hello.hs");
<BR>try {<BR>helpset = new HelpSet(loader, url);<BR>} catch
(HelpSetException e) {<BR>System.err.println("Error
loading");<BR>return;<BR>}<BR><BR>HelpBroker helpbroker =
helpset.createHelpBroker();<BR><BR>ActionListener listener = <BR>new
CSH.DisplayHelpFromSource(helpbroker);<BR>overview.addActionListener(listener);<BR><BR>CSH.setHelpIDString(specific,
"one");<BR>specific.addActionListener(listener);<BR><BR>CSH.setHelpIDString(button1,
"two");<BR>ActionListener tracker = <BR>new
CSH.DisplayHelpAfterTracking(helpbroker);<BR>button2.addActionListener(tracker);<BR><BR>JRootPane
rootpane =
frame.getRootPane();<BR>helpbroker.enableHelpKey(rootpane, "three",
helpset);<BR><BR>frame.setSize(200,
200);<BR>frame.show();<BR>}<BR>}</FONT></P>
<P><FONT face=arial,sans-serif color=#000000
size=2>以上目录和文件以及程序你可以在http://www.jzventures.com/javahelp.zip下载。<BR></P></FONT></SPAN><BR>
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