依旧菜鸟级问题，放在我的博客里，我好找，大神绕行。
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在Eclipse中用Tomcat启动服务端工程，一启动就会出错，报错如下：
“Server Tomcat v6.0 Server at localhost was unable to start within 45 seconds. If the server requires more time, try increasing the timeout in the server editor.”
问题在于，Tomcat设定启动时间太短，只有45s，而工程大，45s启动它不够用。
在WorkSpace中找文件：WorkSpace——.metadata——.plugins——org.eclipse.wst.server.core——servers.xml，打开修改：
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修改前：
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<?xml version="1.0" encoding="UTF-8" standalone="no"?><servers> <server auto-publish-setting="2" auto-publish-time="1" configuration-id="/Servers/Tomcat v6.0 Server at localhost-config" deployDir="wtpwebapps" hostname="localhost" id="Tomcat v6.0 Server at localhost" name="Tomcat v6.0 Server at localhost" runtime-id="Apache Tomcat v6.0" server-type="org.eclipse.jst.server.tomcat.60" server-type-id="org.eclipse.jst.server.tomcat.60" start-timeout="45" stop-timeout="15" testEnvironment="true" timestamp="1"> <list key="modules" value0="zmks_rest::org.eclipse.jst.jee.server:zmks_rest::jst.web::2.5"/> </server></servers>?
修改后：
?<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<servers> <server auto-publish-setting="2" auto-publish-time="1" configuration-id="/Servers/Tomcat v6.0 Server at localhost-config" deployDir="wtpwebapps" hostname="localhost" id="Tomcat v6.0 Server at localhost" name="Tomcat v6.0 Server at localhost" runtime-id="Apache Tomcat v6.0" server-type="org.eclipse.jst.server.tomcat.60" server-type-id="org.eclipse.jst.server.tomcat.60" start-timeout="1000" stop-timeout="15" testEnvironment="true" timestamp="1"> <list key="modules" value0="zmks_rest::org.eclipse.jst.jee.server:zmks_rest::jst.web::2.5"/> </server></servers>?
修改的是start-timeout的值。
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要重启Eclipse。