Tomcat相关

Tomcat端口被占用

1、端口被占用，进入windows命令，查看哪个进程占用该端口

netstat -aon|findstr 1099

2、然后关闭占用该端口的进程

比如：进程PID为1104，实际情况而定

 taskkill -f -pid 1104 

Tomcat访问本地图片配置

1、本地图片路径：

D:\images

本地图片地址

2、Tomcat server.xml文件配置

Tomcat根目录->conf文件夹下->server.xml文件

image.png

在server.xml文件Host结点下，添加如下图配置

• path:访问链接，相对位置
• docBase:本地图片文件夹路径

配置好之后重启Tomcat

相关配置

<Context path="/imgs" docBase="D:\images"  reloadable="true"></Context> 

3、浏览器访问图片

注意:自己的Tomcat端口

http://localhost:8888/imgs/图片名

访问images根目录下图片

http://localhost:8888/imgs/文件名/图片名

访问cat目录下图片

jdbc工具类测试没有问题，Idea运行web项目时,提示java.lang.ClassNotFoundException: com.mysql.jdbc.Driver解决方法

今天用 idea写了个工程，jdbc在工具中测试通过，放web项目中，结果最后报错，错误信息如下：

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1647)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1493)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:186)
at com.google.model.ConnDB.getConn(ConnDB.java:16)
at com.google.model.GoodsBeanBO.getGoodsBean(GoodsBeanBO.java:23)
at com.google.servlet.showGoodsClServlet.doGet(showGoodsClServlet.java:41)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:722)
java.lang.NullPointerException
at com.google.model.GoodsBeanBO.getGoodsBean(GoodsBeanBO.java:25)
at com.google.servlet.showGoodsClServlet.doGet(showGoodsClServlet.java:41)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489
at java.lang.Thread.run(Thread.java:722)

结果尝试换各个版本的jar包，原来是tomcat找不到MySql jar包，必须把mysql-connector-java-5.1.7-bin.jar导入到tomcat的lib目录下面！ FUCK!