Java.security.NoSuchAlgorithmException:SHA1PRNG SecureRandom Not available

Q long time no use MyEclipse10, today opened to see the previous university project, in the TOMCAT7 launch, I cha, error:

severe:exception initializing random number generator using algorithm [SHA1PRNG] Java.security.NoSuchAlgorithmException:SHA1PRNG SecureRandom not available at    Sun.security.jca.GetInstance.getInstance (Unknown source) at Java.security.SecureRandom.getInstance (Unknown source) At Org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom (Sessionidgeneratorbase.java:210) at Org.apache.catalina.util.SessionIdGeneratorBase.getRandomBytes (Sessionidgeneratorbase.java:174) at Org.apache.catalina.util.StandardSessionIdGenerator.generateSessionId (Standardsessionidgenerator.java: 34) at Org.apache.catalina.util.SessionIdGeneratorBase.generateSessionId (Sessionidgeneratorbase.java:167) at Org.apache.catalina.util.SessionIdGeneratorBase.startInternal (Sessionidgeneratorbase.java:256) at Org.apache.catalina.util.LifecycleBase.start (Lifecyclebase.java:145) at Org.apache.catalina.session.ManagerBase.startInternal (Managerbase.java:714) at Org.apache.catalina.session.StandardManager.startInternal (Standardmanager.java:461) at Org.apache.catalina.util.LifecycleBase.start (Lifecyclebase.java:145) at Org.apache.catalina.core.StandardContext.startInternal (Standardcontext.java:5643) at Org.apache.catalina.util.LifecycleBase.start (Lifecyclebase.java:145) at Org.apache.catalina.core.ContainerBase.addChildInternal (Containerbase.java:899) at Org.apache.catalina.core.ContainerBase.addChild (Containerbase.java:875) at Org.apache.catalina.core.StandardHost.addChild (Standardhost.java:35W) at Org.apache.catalina.startup.HostConfig.deployDirectory (Hostconfig.java:1260) at Org.apache.catalina.startup.hostconfig$deploydirectory.run (Hostconfig.java:2002) at Java.util.concurrent.executors$runnableadapter.call (Unknown Source) at Java.util.concurrent.futuretask$syn C.innerrun (Unknown source) at Java.util.concurrent.FutureTask.run (Unknown source) at Java.util.concurrent.ThreadPool Executor.runworker (Unknown source) at Java.util.concurrent.threadpoolexecutor$worker.run (Unknown source) at Java.lan G.thread.run (Unknown Source)

See this error, confused, never seen this error, thought is Tomcat7 's sake, and change bit tomcat6, after launch, I fork, there is an error:

severe:cannot Find message associated with key managerBase.digestjava.security.NoSuchAlgorithmException:MD5 MessageDigest not available at sun.security.jca.GetInstance.getInstance (Unknown Source) at java.security.Security.ge Timpl (Unknown source) at Java.security.MessageDigest.getInstance (Unknown source) at Org.apache.catalina.session.Mana Gerbase.getdigest (Managerbase.java:478) at Org.apache.catalina.session.ManagerBase.generateSessionId (Managerbase.java:1220) at Org.apache.catalina.session.StandardManager.start (Standardmanager.java:636) at Org.apache.catalina.core.ContainerBase.setManager (Containerbase.java:448) at Org.apache.catalina.core.StandardContext.start (Standardcontext.java:4665) at Org.apache.catalina.core.ContainerBase.addChildInternal (Containerbase.java:803) at Org.apache.catalina.core.ContainerBase.addChild (Containerbase.java:780) at Org.apache.catalina.core.StandardHost.addChild (Standardhost.java:583) at Org.apache.catalina.startup.HostConfig.deployDescriptor (Hostconfig.java:676) at Org.apache.catalina.startup.HostConfig.deployDescriptors (Hostconfig.java:30W) at Org.apache.catalina.startup.HostConfig.deployApps (Hostconfig.java:503) at Org.apache.catalina.startup.HostConfig.start (Hostconfig.java:1322) at Org.apache.catalina.startup.HostConfig.lifecycleEvent (Hostconfig.java:325) at Org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent (Lifecyclesupport.java:142) at Org.apache.catalina.core.ContainerBase.start (Containerbase.java:1069) at Org.apache.catalina.core.StandardHost.start (Standardhost.java:822) at Org.apache.catalina.core.ContainerBase.start (Containerbase.java:1061) at Org.apache.catalina.core.StandardEngine.start (Standardengine.java:463) at Org.apache.catalina.core.StandardService.start (Standardservice.java:525) at Org.apache.catalina.core.StandardServer.start (Standardserver.java:759) at Org.apache.catalina.startup.Catalina.start (Catalina.java:595) at Sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at Sun.reflect.NativeMethodAccessorImpl.invoke (Unknown source) at Sun.reflect.DelegatingMethodAccessorImpl.invoke (Unknown source) at Java.lang.reflect.Method.invo Ke (Unknown Source) at Org.apache.catalina.startup.Bootstrap.start (Bootstrap.java:289) at Org.apache.catalina.startup.Bootstrap.main (Bootstrap.java:414)

Then, simply remove the project, separate start Tomcat6 and tomcat7, I fork, or the same error, this shows that the original project is no problem, that is the reason for MyEclipse10 and Tomcat.

Because Tomcat6 and TOMCAT7 rely on JDK7, it is unclear why this was reported, but Tomcat6 and tomcat7 in Eclipse can use JDK7. So, the TOMCAT6 and Tomcat7 rely on the JDK7 for MyEclipse10 bring JDK6, restart Tomcat, I fork, really no problem.

Java.security.NoSuchAlgorithmException:SHA1PRNG SecureRandom Not available