如何升级Tomcat Java小程序以使用JNLP？
我有一套在Tomcat上运行的Java小程序。这些项目记录非正式的高尔夫“锦标赛”活动，包括友谊赛 虽然程序细节并不重要，但代码集包含30000多行源代码。为了便于移植和避免维护问题，我选择Java作为实现语言。我使用Tomcat部署应用程序，使用javascript调用小程序。我的所有小程序都使用参数，例如事件名称、课程名称和播放日期 不幸的是，java和浏览器的更改现在给我的应用程序带来了维护问题。第一个问题是java增加了jar文件必须签名的要求。第二个问题是，first Chrome和现在的Firefox已经删除了对NPAPI插件的支持，这实际上从html中删除了Java小程序支持 （）是新的替代品。这两个问题都有点难以解决，因为没有明确的分步文档详细说明实际需要做什么 将applet迁移到JNLP可能有不同甚至更好的方法，但是这里描述的过程是有效的，并且是完整的。然而，在描述它们时，我必须假设您已经知道如何创建JavaWeb应用程序，因为不需要更新您还没有的东西 我在Windows Cygwin环境中使用Tomcat。我的示例mkJavaKey脚本显式使用该环境，但所有Java和javascript代码都是可移植的。Tomcat使用web.xml来定义如何调用servlet。如果使用不同的部署方法，我的web.xml文件至少应该作为一个起点。为什么需要对jar文件签名？ 我不能回答这部分问题。但是，对于任何非平凡的应用程序，您至少需要经历自签名jar文件的过程，即使这种自签名没有提供真正的额外安全性。任何人都可以使用Java开发工具包中提供的工具对应用程序进行自签名。自签名证书可以用于开发工作，但每次运行应用程序时都必须单击风险接受复选框 好的，我的应用程序非常重要，我需要对jar文件进行签名。程序是什么？ 这里有一个简单的答案：这是一个两步的过程。首先使用keytool程序创建必要的凭证，然后使用jarsigner工具对jar文件进行签名。您只需要偶尔创建一次凭据，但需要对每个部署的jar文件进行签名 要创建这些凭据（自签名证书），请使用： 这将在您的主目录中创建一个名为如何升级Tomcat Java小程序以使用JNLP？,java,java-web-start,jnlp,keytool,Java,Java Web Start,Jnlp,Keytool,我有一套在Tomcat上运行的Java小程序。这些项目记录非正式的高尔夫“锦标赛”活动，包括友谊赛 虽然程序细节并不重要，但代码集包含30000多行源代码。为了便于移植和避免维护问题，我选择Java作为实现语言。我使用Tomcat部署应用程序，使用javascript调用小程序。我的所有小程序都使用参数，例如事件名称、课程名称和播放日期 不幸的是，java和浏览器的更改现在给我的应用程序带来了维护问题。第一个问题是java增加了jar文件必须签名的要求。第二个问题是，first Chrome和现
.keystoreapplet.jar$JAVA_HOME/bin/jarsigner -tsa http://timestamp.digicert.com -storepass password applet.jar mydomain
-storepass-alias#!/bin/bash
#
# Title-
# mkJavaKey
#
# Function-
# Create a new key using $JAVA_HOME/bin/keytool
#
# Usage-
# mkJavaKey ## CYGWIN ONLY ##
# (This is required when jarsigner complains about an expired key.)
# NOTE: This *REMOVES* and *REPLACES* your existing .keystore file!
#
#######
##########################################################################
# Environment check
if [ -z "$JAVA_HOME" ] ; then
. setupJAVA ## (This personal script sets JAVA_HOME)
if [ -z "$JAVA_HOME" ] ; then
echo "JAVA_HOME environment variable missing"
exit 1
fi
fi
if [ -z "$HOMEPATH" ] ; then
echo "HOMEPATH environment variable missing"
echo "Try export HOMEPATH=\Users\myname"
exit 1
fi
home_path=`cygpath --path --unix C:$HOMEPATH`
PGM=$JAVA_HOME/bin/keytool
if [ ! -x "$PGM" ] ; then
echo "$PGM not executable"
exit 1
fi
##########################################################################
# Create a new .keystore
set -x
rm -Rf $home_path/.keystore
$PGM -genkeypair -keyalg RSA -keysize 2048 -alias mydomain -validity 1825
exit $?
JAVA\u HOME$HOME$HOMEPATHcygpath.PHONY: golfer.install
golfer.install: test golfer
: (Not relevant to discussion)
cp -p $(OBJDIR)/usr/fne/golfer/Applet/applet.jar $(DEPLOYDIR)/webapps/golfer/.
jarsigner -tsa http://timestamp.digicert.com -storepass password "$(shell cygpath --path --windows "$(DEPLOYDIR)/webapps/golfer/applet.jar")" mydomain
: (Not relevant to discussion)
$（OBDIR）$（DEPLOYDIR）//------------------------------------------------------------------------
//
// Title-
// applet.js
//
// Purpose-
// Common applet javascript.
//
// Last change date-
// 2010/10/19
//
//------------------------------------------------------------------------
var out; // Output document
//------------------------------------------------------------------------
// appHead
//
// Generate html header for application.
//------------------------------------------------------------------------
function appHead(title,cname,height,width)
{
var todoWindow= window.open('','','');
out= todoWindow.document;
out.write('<html>');
out.write('<head><title>' + title + '</title></head>');
out.write('<body>\n');
out.write('<applet code="' + cname + '.class"');
out.write(' codebase="./"')
out.write(' archive="applet.jar,jars/common.jar"');
out.write(' width="' + width + '" height="' + height + '">\n');
}
//------------------------------------------------------------------------
// appParm
//
// Add parameter information
//------------------------------------------------------------------------
function appParm(name, value)
{
out.write(' <param-name="' + name + '" value="' + value + '"/>\n');
}
//------------------------------------------------------------------------
// appTail
//
// Generate html trailer information.
//------------------------------------------------------------------------
function appTail()
{
out.write('Your browser is completely ignoring the <APPLET> tag!\n');
out.write('</applet>');
out.write('<form>');
out.write('<input type="button" value="Done" onclick="window.close()">');
out.write('</form>');
out.write('</body>');
out.write('</html>');
out.close();
out= null;
}
//------------------------------------------------------------------------
// cardEvents
//
// Display scorecard for selected date.
//------------------------------------------------------------------------
function cardEvents(eventsID, obj)
{
if( obj.selectedIndex == 0 )
{
alert("No date selected");
return;
}
appHead('Score card', 'EventsCard', '100%', '100%');
appParm('events-nick', eventsID);
appParm('events-date', obj[obj.selectedIndex].value);
appTail();
reset();
}
Applet.jnlp、类名、描述、parm=value、parm=value、//------------------------------------------------------------------------
//
// Method-
// AppletServlet.doGet
//
// Purpose-
// Called for each HTTP GET request.
//
//------------------------------------------------------------------------
public void
doGet( // Handle HTTP "GET" request
HttpServletRequest req, // Request information
HttpServletResponse res) // Response information
throws ServletException, IOException
{
String q= req.getQueryString();
if( debug ) log("doGet("+q+")");
res.setContentType("text/html");
query(req, res);
}
//------------------------------------------------------------------------
//
// Method-
// AppletServlet.putError
//
// Purpose-
// Generate error response.
//
//------------------------------------------------------------------------
public void
putError( // Generate error response
PrintWriter out, // The response writer
String msg) // The error message
{ out.println("<HTML>");
out.println("<HEAD><TITLE>" + msg + "</TITLE></HEAD>");
out.println("<BODY>");
out.println("<H1 align=\"center\">" + msg + "</H1>");
out.println("</BODY>");
out.println("</HTML>");
}
//------------------------------------------------------------------------
//
// Method-
// AppletServlet.query
//
// Purpose-
// Handle a query.
//
//------------------------------------------------------------------------
protected void
query( // Handle a query
HttpServletRequest req, // Request information
HttpServletResponse res) // Response information
throws ServletException, IOException
{
String q= req.getQueryString();
if( debug ) log("query("+q+")");
PrintWriter out = res.getWriter();
String BOGUS= "<br> Malformed request: query: '" + q + "'";
//=====================================================================
// Applet.jnlp?classname,title,parm=value,parm=value,...
int index= q.indexOf(',');
if( index < 0 || index == (q.length() - 1) )
{
putError(out, BOGUS);
return;
}
String invoke= q.substring(0, index);
q= q.substring(index+1);
index= q.indexOf(',');
if( index < 0 )
index= q.length();
String title= q.substring(0, index);
title= java.net.URLDecoder.decode(title, "UTF-8");
// Parameter extraction
Vector<String> param= new Vector<String>();
if( index < q.length() )
{
q= q.substring(index+1);
for(;;)
{
index= q.indexOf(',');
if( index < 0 )
index= q.length();
String s= q.substring(0, index);
int x= s.indexOf('=');
if( x < 0 )
{
putError(out, BOGUS);
return;
}
param.add(s);
if( index >= q.length() )
break;
q= q.substring(index+1);
}
}
//---------------------------------------------------------------------
// We now have enough information to generate the response
//---------------------------------------------------------------------
res.setContentType("application/x-java-jnlp-file");
out.println("<?xml version='1.0' encoding='utf-8'?>");
out.println("<jnlp spec='1.0+' codebase='http://localhost:8080/golfer'>");
out.println(" <information>");
out.println(" <title>" + title + "</title>");
out.println(" <vendor>My Name</vendor>");
out.println(" <description>" + title + "</description>");
out.println(" </information>");
out.println(" <security><all-permissions/></security>");
out.println(" <resources>");
out.println(" <j2se version='1.7+'/>");
out.println(" <jar href='applet.jar'/>");
out.println(" <jar href='jars/common.jar'/>");
out.println(" </resources>");
out.println(" <applet-desc main-class='" + invoke + "' name='" + title + "'" +
" height='90%' width='98%'>");
// Insert applet parameters
for(int i= 0; i<param.size(); i++)
{
String s= param.elementAt(i);
int x= s.indexOf('=');
String n= s.substring(0,x);
String v= s.substring(x+1);
out.println(" <param name='" + n+ "' value='" + v + "'/>");
}
out.println(" </applet-desc>");
out.println("</jnlp>");
}
.jnlpC:\ProgramFiles\java\jre*\bin\javaws.exe//------------------------------------------------------------------------
//
// Title-
// applet.js
//
// Purpose-
// Common applet javascript.
//
// Last change date-
// 2017/03/15
//
//------------------------------------------------------------------------
var out; // Output URL
//------------------------------------------------------------------------
// appHead
//
// Generate application URL header.
//------------------------------------------------------------------------
function appHead(title,cname,height,width)
{
out= cname + ',' + title;
}
//------------------------------------------------------------------------
// appParm
//
// Generate html parameter information.
//------------------------------------------------------------------------
function appParm(name, value)
{
out= out + ',' + name + '=' + value;
}
//------------------------------------------------------------------------
// appTail
//
// Generate html trailer information.
//------------------------------------------------------------------------
function appTail()
{
var specs= 'menubar=yes,toolbar=yes';
window.open('Applet.jnlp?' + out, '_self', specs);
}
//------------------------------------------------------------------------
// cardEvents
//
// Display scorecard for selected date.
//------------------------------------------------------------------------
function cardEvents(eventsID, obj)
{
// (UNCHANGED!)
}
//------------------------------------------------------------------------
//
// Method-
// AppletServlet.doGet
//
// Purpose-
// Called for each HTTP GET request.
//
//------------------------------------------------------------------------
public void
doGet( // Handle HTTP "GET" request
HttpServletRequest req, // Request information
HttpServletResponse res) // Response information
throws ServletException, IOException
{
String q= req.getQueryString();
if( debug ) log("doGet("+q+")");
res.setContentType("text/html");
query(req, res);
}
//------------------------------------------------------------------------
//
// Method-
// AppletServlet.putError
//
// Purpose-
// Generate error response.
//
//------------------------------------------------------------------------
public void
putError( // Generate error response
PrintWriter out, // The response writer
String msg) // The error message
{ out.println("<HTML>");
out.println("<HEAD><TITLE>" + msg + "</TITLE></HEAD>");
out.println("<BODY>");
out.println("<H1 align=\"center\">" + msg + "</H1>");
out.println("</BODY>");
out.println("</HTML>");
}
//------------------------------------------------------------------------
//
// Method-
// AppletServlet.query
//
// Purpose-
// Handle a query.
//
//------------------------------------------------------------------------
protected void
query( // Handle a query
HttpServletRequest req, // Request information
HttpServletResponse res) // Response information
throws ServletException, IOException
{
String q= req.getQueryString();
if( debug ) log("query("+q+")");
PrintWriter out = res.getWriter();
String BOGUS= "<br> Malformed request: query: '" + q + "'";
//=====================================================================
// Applet.jnlp?classname,title,parm=value,parm=value,...
int index= q.indexOf(',');
if( index < 0 || index == (q.length() - 1) )
{
putError(out, BOGUS);
return;
}
String invoke= q.substring(0, index);
q= q.substring(index+1);
index= q.indexOf(',');
if( index < 0 )
index= q.length();
String title= q.substring(0, index);
title= java.net.URLDecoder.decode(title, "UTF-8");
// Parameter extraction
Vector<String> param= new Vector<String>();
if( index < q.length() )
{
q= q.substring(index+1);
for(;;)
{
index= q.indexOf(',');
if( index < 0 )
index= q.length();
String s= q.substring(0, index);
int x= s.indexOf('=');
if( x < 0 )
{
putError(out, BOGUS);
return;
}
param.add(s);
if( index >= q.length() )
break;
q= q.substring(index+1);
}
}
//---------------------------------------------------------------------
// We now have enough information to generate the response
//---------------------------------------------------------------------
res.setContentType("application/x-java-jnlp-file");
out.println("<?xml version='1.0' encoding='utf-8'?>");
out.println("<jnlp spec='1.0+' codebase='http://localhost:8080/golfer'>");
out.println(" <information>");
out.println(" <title>" + title + "</title>");
out.println(" <vendor>My Name</vendor>");
out.println(" <description>" + title + "</description>");
out.println(" </information>");
out.println(" <security><all-permissions/></security>");
out.println(" <resources>");
out.println(" <j2se version='1.7+'/>");
out.println(" <jar href='applet.jar'/>");
out.println(" <jar href='jars/common.jar'/>");
out.println(" </resources>");
out.println(" <applet-desc main-class='" + invoke + "' name='" + title + "'" +
" height='90%' width='98%'>");
// Insert applet parameters
for(int i= 0; i<param.size(); i++)
{
String s= param.elementAt(i);
int x= s.indexOf('=');
String n= s.substring(0,x);
String v= s.substring(x+1);
out.println(" <param name='" + n+ "' value='" + v + "'/>");
}
out.println(" </applet-desc>");
out.println("</jnlp>");
}
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>Applet</servlet-name>
<servlet-class>usr.fne.golfer.AppletServlet</servlet-class>
<init-param>
<param-name>property-path</param-name>
<param-value>profile</param-value>
</init-param>
<init-param>
<param-name>property-file</param-name>
<param-value>golfer.pro</param-value>
</init-param>
<load-on-startup>30</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Applet</servlet-name>
<url-pattern>/Applet.jnlp</url-pattern>
</servlet-mapping>
: (Other Servlets unchanged)
</web-app>