请问一下做JAVA WEB 要学好哪几块知识？

Question

做JAVA WEB 要学好哪几块知识

Answer 1

jvm参数中的java option需要修改后重启生效。jvm参数可选配置如下：options include:-client to select the "client" VM-server to select the "server" VM-hotspot is a synonym for the "client" VM [deprecated]The default VM is client.-cp <class search path of directories and zip/jar files>-classpath <class search path of directories and zip/jar files>A ; separated list of directories, JAR archives,and ZIP archives to search for class files.-D<name>=<value>set a system property-verbose[:class|gc|jni]enable verbose output-version print product version and exit-version:<value>require the specified version to run-showversion print product version and continue-jre-restrict-search | -jre-no-restrict-searchinclude/exclude user private JREs in the version search-? -help print this help message-X print help on non-standard options-ea[:<packagename>...|:<classname>]-enableassertions[:<packagename>...|:<classname>]enable assertions-da[:<packagename>...|:<classname>]-disableassertions[:<packagename>...|:<classname>]disable assertions-esa | -enablesystemassertionsenable system assertions-dsa | -disablesystemassertionsdisable system assertions-agentlib:<libname>[=<options>]load native agent library <libname>, e.g. -agentlib:hprofsee also, -agentlib:jdwp=help and -agentlib:hprof=help-agentpath:<pathname>[=<options>]load native agent library by full pathname-javaagent:<jarpath>[=<options>]load Java programming language agent, see java.lang.instrument

Answer 2

-vm C:/Program&nbsp;Files/Java/jdk1.6.0_23/jre/bin/client/jvm.dll&nbsp; 这个配置的文件就在你的eclipse目录下面。里面有个-vm的配置项。C:/Program&nbsp;Files/Java/jdk1.6.0_23/jre/bin/client/jvm.dll&nbsp;这个是我的机器JAVA安装的路径。你可以看下你的配置里面-vm下面一行配置的什么。检查下配置是否正确。 如果没有-vm这个配置项的话，可以自己加上，把路径改成你自己的JAVA的路径