持之以恒

這兩天看到Eclipse 3.7（代號(hào)Indigo） 正式版發(fā)布了，于是心想也試試看最新版有什么變動(dòng)，于是就開(kāi)始準(zhǔn)備嘗試下，終于在今天下載好也解壓完，一切很正常，隨便寫了個(gè)web工程，在server中添加了個(gè)tomcat服務(wù)，將工程部署上去，啟動(dòng)tomcat，控制臺(tái)打印出啟動(dòng)信息，這一切都是平常見(jiàn)的，啟動(dòng)正常。

tomcat log:

2011-6-26 13:05:23 org.apache.catalina.core.AprLifecycleListener init
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\Genuitec\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;D:/Genuitec/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/bin/../jre/bin/client;D:/Genuitec/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/bin/../jre/bin;D:/Genuitec/Common/binary/com.sun.java.jdk.win32.x86_1.6.0.013/bin/../jre/lib/i386;F:\oracle\product\10.2.0\db_1\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;D:\Genuitec\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;C:\Program Files\Common Files\Thunder Network\KanKan\Codecs;C:\Program Files\SinoVoice\jTTS 5.0 Desktop\Bin;D:\MinGW\bin;D:\Djgpp\bin;C:\WINDOWS\system32\WindowsPowerShell\v1.0;D:\Program Files\IDM Computer Solutions\UltraEdit\;D:\Program Files\ICYPlayer\Codecs\;D:\eclipse-jee-indigo-win32\eclipse;
2011-6-26 13:05:23 org.apache.tomcat.util.digester.SetPropertiesRule begin
警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:web' did not find a matching property.
2011-6-26 13:05:24 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["http-bio-8080"]
2011-6-26 13:05:24 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["ajp-bio-8009"]
2011-6-26 13:05:24 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 1273 ms
2011-6-26 13:05:24 org.apache.catalina.core.StandardService startInternal
信息: Starting service Catalina
2011-6-26 13:05:24 org.apache.catalina.core.StandardEngine startInternal
信息: Starting Servlet Engine: Apache Tomcat/7.0.16
2011-6-26 13:05:24 org.apache.catalina.util.SessionIdGenerator createSecureRandom
信息: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [172] milliseconds.
2011-6-26 13:05:24 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory docs
2011-6-26 13:05:25 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory examples
2011-6-26 13:05:25 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
2011-6-26 13:05:25 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
2011-6-26 13:05:25 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: attributeAdded('org.apache.jasper.compiler.TldLocationsCache','org.apache.jasper.compiler.TldLocationsCache@1867df9')
2011-6-26 13:05:25 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory host-manager
2011-6-26 13:05:26 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory manager
2011-6-26 13:05:26 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory ROOT
2011-6-26 13:05:26 org.apache.coyote.AbstractProtocol start
信息: Starting ProtocolHandler ["http-bio-8080"]
2011-6-26 13:05:26 org.apache.coyote.AbstractProtocol start
信息: Starting ProtocolHandler ["ajp-bio-8009"]
2011-6-26 13:05:26 org.apache.catalina.startup.Catalina start
信息: Server startup in 2085 ms

當(dāng)我打開(kāi)IE時(shí)，輸入http://localhost:8080/ 想不到的是，卻報(bào)了404的錯(cuò)。

　　這想不至于吧，于時(shí)要重復(fù)了好幾遍操作，結(jié)果都一樣，很是奇怪，我想是不是tomcat 有什么問(wèn)題，于是我是脫離eclipse，單獨(dú)啟動(dòng)tomcat，啟動(dòng)完，刷新了頁(yè)面，正常的tomcat頁(yè)面出來(lái)了。

　　到此得出個(gè)問(wèn)題，肯定是eclipse的問(wèn)題了，應(yīng)該不是軟件的什么bug，可能是在某個(gè)地方設(shè)置有問(wèn)題，從這個(gè)角度找下去，后來(lái)發(fā)現(xiàn)，原來(lái)在eclipse中的server中添加一個(gè)新的服務(wù)時(shí)，eclipse默認(rèn)值有點(diǎn)小問(wèn)題，

　　具體操作如下：

　　1、找到server操作窗口，雙擊下面的tomcat服務(wù)

　　２、在打開(kāi)的設(shè)置中，將Server Locations的選項(xiàng)選成第二個(gè)“Use Tomcat installation (takes control of .........)”

　　現(xiàn)在刷新頁(yè)面已經(jīng)好了，能夠正常出現(xiàn)大家熟悉的頁(yè)面，接下你要做的，你懂的。

　　結(jié)束語(yǔ)：要是這個(gè)選項(xiàng)是灰的，不能夠改，請(qǐng)刪除，再重新試試，不要啟動(dòng)服務(wù)，剛添加tomcat時(shí)就切換到該窗口進(jìn)行以下兩步，就可以了。eclipse 將這項(xiàng)默認(rèn)值選成第一個(gè)選項(xiàng)了。導(dǎo)致了今天的問(wèn)題，希望能夠給出現(xiàn)相同問(wèn)題的人有所幫助！

小白