修改tomcat conf路径下的 server.xml 文件
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<Context path="" docBase="bookmanage" reloadable="true">
</Context>
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<Context path="" docBase="bookmanage" reloadable="true">
</Context>