Jetty Access JSP page exception occurred: Org.apache.jasper.jasperexception:pwc6345:a full JDK (not just JRE) is required resolved

Today, under the jetty configuration of a JSP template report page, reported the following exception information:

Org.apache.jasper.JasperException:PWC6345:There is a error in invoking Javac. A full JDK (not just JRE) was required at Org.apache.jasper.compiler.DefaultErrorHandler.jspError (Defaulterrorhandler.ja va:92) at Org.apache.jasper.compiler.ErrorDispatcher.dispatch (errordispatcher.java:378) at Org.apache.jasper.compiler.ErrorDispatcher.jspError (errordispatcher.java:119) at Org.apache.jasper.compiler.Jsr199JavaCompiler.compile (jsr199javacompiler.java:208) at Org.apache.jasper.compiler.Compiler.generateClass (compiler.java:384) at Org.apache.jasper.compiler.Compiler.compile (compiler.java:453) at Org.apache.jasper.JspCompilationContext.compile (jspcompilationcontext.java:625) at Org.apache.jasper.servlet.JspServletWrapper.service (jspservletwrapper.java:374) at Org.apache.jasper.servlet.JspServlet.serviceJspFile (jspservlet.java:492) at Org.apache.jasper.servlet.JspServlet.service (jspservlet.java:378) at Javax.servlet.http.HttpServlet.service ( httpservlet.java:847) at Org.eclipse.jetty.servlet.ServletHolder.handle (servletholder.java:558) at Org.eclipse.jetty.servlet.ServletHandler.doHandle (servlethandler.java:489) at Org.eclipse.jetty.server.handler.ScopedHandler.handle (scopedhandler.java:119) at Org.eclipse.jetty.security.SecurityHandler.handle (securityhandler.java:520) at Org.eclipse.jetty.server.session.SessionHandler.doHandle (sessionhandler.java:233) at Org.eclipse.jetty.server.handler.ContextHandler.doHandle (contexthandler.java:972) at Org.eclipse.jetty.servlet.ServletHandler.doScope (servlethandler.java:417) at Org.eclipse.jetty.server.session.SessionHandler.doScope (sessionhandler.java:192) at Org.eclipse.jetty.server.handler.ContextHandler.doScope (contexthandler.java:906) at Org.eclipse.jetty.server.handler.ScopedHandler.handle (scopedhandler.java:117) at Org.eclipse.jetty.server.handler.HandlerWrapper.handle (handlerwrapper.java:110) at Org.eclipse.jetty.server.Server.handle (server.java:350) at org.ecLipse.jetty.server.HttpConnection.handleRequest (httpconnection.java:442) at Org.eclipse.jetty.server.httpconnection$requesthandler.headercomplete (httpconnection.java:910) at Org.eclipse.jetty.http.HttpParser.parseNext (httpparser.java:565) at Org.eclipse.jetty.http.HttpParser.parseAvailable (httpparser.java:217) at Org.eclipse.jetty.server.AsyncHttpConnection.handle (asynchttpconnection.java:46) at Org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle (selectchannelendpoint.java:545) at Org.eclipse.jetty.io.nio.selectchannelendpoint$1.run (selectchannelendpoint.java:43) at Org.eclipse.jetty.util.thread.QueuedThreadPool.runJob (queuedthreadpool.java:598) at Org.eclipse.jetty.util.thread.queuedthreadpool$3.run (queuedthreadpool.java:533) at Java.lang.Thread.run (Unknown Source)

On the internet to find a lot of information, the main problem is jetty running JRE environment configuration problem, the final solution is as follows:
In eclipse->window->prefence->java->installed jres, select JRE Click Edit to find the JDK installation directory, my installation is C:Program files/java/ jdk1.7 Locate the JRE directory under the JDK installation directory and click Finish. , start the project, access the JSP page, everything works.

Reminder: Online Solutions I tried unsuccessfully, the main reason is because of the JRE configuration environment error, when choosing the JRE environment, there are two choices, one is the Java root directory of the JRE (choose this will not succeed), One is the JRE under the JDK root directory (choose this success)!!

Jetty Access JSP page exception occurred: Org.apache.jasper.jasperexception:pwc6345:a full JDK (not just JRE) is required resolved