Tomcat Deployment FAQ

This article introduces problems encountered and solutions when deploying project to Tomcat .

1. Windows system CMD window

1) The CMD window under Windows system is editable by default. If the mouse clicks into the window, it will cause all Java threads to be blocked, resulting in Tomcat's suspended animation and cannot be used. At this point, you need to click "Properties" on the CMD interface of Tomcat.

2) Uncheck the two edit options, click "OK" to save the properties, and restart Tomcat. As shown below:

2. About page shows HTTP Status 404

Copy the tools.jar under the installed JDK directory lib to %Tomcat_home%/lib or %Tomcat_home%/webapps/webroot/WEB-INF /lib .

3. Insufficient memory

Problem description

Error configuring administrator password or Java heap space.

Cause Analysis

Indicates that the memory of Tomcat is insufficient, and the memory configuration of Tomcat needs to be modified.

Solution

Refer to the documentation for the method of modifying memory: Java Heap Space

4. Tomcat deployment of version 7.0.100

The 7.0.100 version of Tomcat needs to put web.xml under %Tomcat_HOME%\webapps\webroot\WEB-INF, Otherwise, an error will be reported.

Please refer to the file: web.zip

Note: This Tomcat bug has been fixed in 7.0.103.

5. When deleting a 1:1 association, the front end reports an error of 400

Problem description

When the customer project is deployed to Tomcat, and the two 1:1 associations of the table are edited and deleted, the entire page will report an error of 400.

Cause Analysis

Higher versions of Tomcat (after 7.0.76) will perform access analysis in strict accordance with the RFC 3986 specification, resulting in the front end reporting 400 when the association is modified.

Solution

1) Modify the %Tomcat_HOME%/conf/server.xml file and add the following code:

maxpostsize="209715200"
maxHttpHeaderSize="16384"
relaxedPathChars="[]|"
relaxedQueryChars="[]|{}^\`"<>"
useBodyEncodingForURI="true"
URIEncoding="UTF-8"

As shown below:

2) Restart the project.