IDEA无法运行SpringMVC项目，提示No TLD files were found in

Question

2017年12月27日 01：08更新

我刚刚误解了一个IDEA的设置项：

我以为这是“浏览器默认打开这个网址”的意思，结果是给项目加前缀，导致一直404，但是我还是很好奇我问的问题的答案，希望有朋友愿意帮我解答，谢谢。

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原问题如下：

小弟刚从Eclipse转战到IDEA平台，可以说是诸事不顺。

尝试用IDEA编写一个简单的SpringMVC例子，但是一直无法正常运行，在几经奋战之下，已经跳过几个坑，比如JDK版本冲突问题，比如libraries未勾选上等问题。

但是还是无法顺利的完成，在Google与baidu的搜索之下，也没有找到合适的资料，所以希望能够借助各位的帮助。

说了这么多，错误信息贴出来：

[2017-12-27 12:22:01,098] Artifact myProjectName:war exploded: Artifact is being deployed, please wait...
27-Dec-2017 00:22:02.541 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanResourcePaths No TLD files were found in resource path [/WEB-INF/assets/css/].
27-Dec-2017 00:22:02.541 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanResourcePaths No TLD files were found in resource path [/WEB-INF/assets/js/].
27-Dec-2017 00:22:02.542 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanResourcePaths No TLD files were found in resource path [/WEB-INF/assets/images/].
27-Dec-2017 00:22:02.543 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanResourcePaths No TLD files were found in resource path [/WEB-INF/assets/].
27-Dec-2017 00:22:02.543 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanResourcePaths No TLD files were found in resource path [/WEB-INF/views/].
27-Dec-2017 00:22:02.543 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanResourcePaths No TLD files were found in resource path [/WEB-INF/].
27-Dec-2017 00:22:02.546 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/logkit-1.0.1.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.547 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/c3p0-0.9.5.2.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.548 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-tx-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.549 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-dao-2.0.8.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.549 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/avalon-framework-4.1.3.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.550 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-beans-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.552 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-web-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.555 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/mybatis-3.4.5.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.556 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-jdbc-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.558 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-core-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.558 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-jcl-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.560 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/mchange-commons-java-0.2.11.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.561 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-expression-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.586 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan TLD files were found in JAR [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-webmvc-5.0.1.RELEASE.jar].
27-Dec-2017 00:22:02.587 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/aopalliance-1.0.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.587 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/gson-2.8.2.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.588 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/mysql-connector-java-6.0.6.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.590 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-context-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.591 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-aop-5.0.1.RELEASE.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.591 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/fastjson-1.2.43.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.592 详细 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner$TldScannerCallback.scan No TLD files were found in [file:/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/mybatis-spring-1.3.1.jar]. Consider adding the JAR to the tomcat.util.scan.StandardJarScanFilter.jarsToSkip property in CATALINA_BASE/conf/catalina.properties file.
27-Dec-2017 00:22:02.593 信息 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.

备注一点：同样的配置，在Eclipse中可以完美运行（包含几个主要的配置文件，以及共用的Maven，Tomcat等）

如果可以，小弟还想问一下，如何让IDEA像Eclipse一样在运行时显示更多关于Spring容器的日志呢？比如是否加载某个配置文件，还有IDEA的运行目录能不能不要那么非主流？直接放在Tomcat的webapps下面呢？

感谢！

Answer 1

先回答你误解的那个设置：

这里其实没有什么好解释，字面意思就很显然是配置上下文地址的，至于你以为的“浏览器默认打开这个网址”是这个：

关于TLD文件问题

你可以参考这里，也许能解决你的问题。
https://my.oschina.net/fdblog...

关于让IDEA像Eclipse一样在运行时显示更多关于Spring容器的日志

你觉得少，首先可能是你项目自身日志配置的问题，详细的日志，例如log4j、slf4j等等请自行网上了解。
这里给出spring官方文档说明：https://docs.spring.io/spring...

还有一种可能是在这里：

以前我也用eclipse，用了IDEA就再也回不去了，不是IDEA非主流，是你没习惯。

如果坑实在太多，最简单的办法就是你在IDEA新建一个空的maven工程，再把以前的代码一个个copy过来，这样出问题的可能性会小很多。

Answer 2

首先需要明确一点，项目构建是否使用了Maven？

从项目使用了lib目录感觉不是
/E:/IDEA/myProjectName/target/myProjectName/WEB-INF/lib/spring-webmvc-5.0.1.RELEASE.jar

1. 从传统的web项目由eclipse到idea，导入的时候选择从Eclipse导入
   
2. 导入后手动配置依赖，选择项目依赖的jdk版本和 项目编译版本
   
   
3. 添加项目中的lib到编译路径，右键lib
   
4. 如果项目是web项目，如果没有web模块，要添加web模块。打开Project Structure ，选择Modules，查看要运行的Module是否有web模块，没有则添加
   
5. 配置web模块
   在idea中web资源的目录是web文件夹，如果是eclipse项目web资源的目录则是WebRoot，点击Module中项目下的web进行更改，改为WebRoot即可。这两个地方都需要更改。
   
6. 配置Artifacts
   在idea中部署的都是Artifacts。在第4步添加web模块的时候，添加完成后，对话框右下角是有提示创建Artifact的，选择创建即可；这里我们手动创建
   
7. 给idea添加tomcat
   

   如果需要热加载需要更改On Update action和On frame deactivatioin 为 Update classes and resources
   Tomcat依赖的JDK版本和启动也有较大关系。
   
   部署项目，添加后给项目配置Application context 路径，只能有一个/路径

8. 添加tomcat依赖
   如果项目中使用了Servlet等 API，如果lib中没有相关依赖，我们要添加Tomcat依赖到项目中
   
   
9. 启动项目，即可。

关于Tomcat运行目录的问题：

这里有三个目录

1. Project compiler output
   
2. Module compile out paht
   
3. Artifacts Out directory
   

因为Tomcat部署的都是Artifact，所以就是Artifacts Out directory这个路径。你看一个这个路径，就知道了。会把项目中编译好的资源拷贝到这个路径下。在第一次运行的时候，idea也会拷贝的，至于热加载配置，在前文也提到了。

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第一次回答问题，希望可以帮到你。