1、首先點(diǎn)擊 File ->New->Other，再搜索spring，選擇 Spring Legacy Project，再點(diǎn)擊Next
2、為您的項(xiàng)目命名(例如：HelloSpringMVC)并選擇 Spring MVC Project模板。
e4c96d4cac8c827145e01d147483072a_SouthEast.png
3、如果是第一次創(chuàng)建的話，STS會(huì)要求下載相應(yīng)的模板
4、為您的頂級(jí)包命名（例如：org.munif.app）并點(diǎn)擊Finish。
5、觀察您的項(xiàng)目結(jié)構(gòu)，您的項(xiàng)目里會(huì)產(chǎn)生莫名其妙的錯(cuò)誤，那就對(duì)了。因?yàn)槲覀冞€沒(méi)有使用Maven添加Spring 的依賴(lài)項(xiàng)。
6、右鍵點(diǎn)擊您的Spring Mvc項(xiàng)目，選擇Run Sa ->Maven install。觀察輸出控制臺(tái)窗口，看是否有安裝進(jìn)度。安裝完成之后，您才能繼續(xù)下一步操作。
e4c96d4cac8c827145e01d147483072a_SouthEast.png
7、右鍵點(diǎn)擊您的Spring MVC項(xiàng)目，選擇Maven -> Update Project。
8、選擇您的項(xiàng)目并點(diǎn)擊OK，一直等到更新過(guò)程完成。
看沒(méi)有錯(cuò)誤了。
9、運(yùn)行您的項(xiàng)目，右鍵點(diǎn)擊項(xiàng)目文件夾并選擇Run As -> Run on Server.
10、結(jié)果是tomcat啟動(dòng)失敗，報(bào)異常了，修改pom.xml
十二月 25, 2017 11:20:17 下午 org.apache.catalina.core.ContainerBase startInternal
嚴(yán)重: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:939)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:793)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.startup.Catalina.start(Catalina.java:655)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:947)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:872)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 6 more
十二月 25, 2017 11:20:17 下午 org.apache.catalina.startup.Catalina start
嚴(yán)重: The required Server component failed to start so Tomcat is unable to start.
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
at org.apache.catalina.startup.Catalina.start(Catalina.java:655)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:793)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 7 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 9 more
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:947)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 11 more
原因是我用的tomcat版本是8.5，STS創(chuàng)建springmvc項(xiàng)目的servlet依賴(lài)是默認(rèn)是2.5，版本對(duì)不上肯定報(bào)錯(cuò)，tomcat8.5對(duì)應(yīng)servlet3.1，至于其他版本對(duì)應(yīng)，可以參考這篇文章《tomcat7以上版本使用maven引進(jìn)jstl錯(cuò)誤》
STS創(chuàng)建springmvc項(xiàng)目默認(rèn)的依賴(lài)
修改pom文件的servlet部分
<!-- 添加servlet支持 servlet3對(duì)應(yīng)tomcat8 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!-- 添加jsp支持 -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<!-- 添加jstl支持 -->
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>javax.servlet.jsp.jstl</artifactId>
<version>1.2.1</version>
<scope>runtime</scope>
</dependency>
然后STS創(chuàng)建JSP文件也是沒(méi)有UTF-8編碼，添加一句這行代碼
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
順便一提，STS默認(rèn)創(chuàng)建springmvc項(xiàng)目的spring是3.1.1，版本有點(diǎn)舊，現(xiàn)在都出了spring5了。這個(gè)的話在pom.xml修改版本號(hào)就好，不影響運(yùn)行。
再點(diǎn)擊Run as ，可以看到成功運(yùn)行的效果
