If the previous line of error is warning (292000): FLEXlm software error: Invalid (inconsistent) license key. The license key and data for the feature… The computer may be 64 bits, and then the cracking program is installed into 32 bits. As long as the broken version in the original license.dat and bin is deleted (preferably permanently deleted) and replaced with 64 bits, the compilation can succeed.

Solution:
exclude the scanning of the above jar packages in the conf/Catalina. Properties file of tomcat, that is, add the following at the end of tomcat.util.scan.standardjarscanfilter.jarstoskip in the conf/Catalina. Properties file:

bcpkix-*.jar,bcprov-*.jar,fr-*.jar

If you feel that Tomcat starts slowly, it is because you want to scan servlet3.0 annotations in jars. You can increase the speed by adding jars that do not need to be scanned at the end of tomcat.util.scan.standardjarscanfilter.jarstoskip in the conf/Catalina. Properties file, such as:

spring-amqp-*.jar,\

spring-aop-*.jar,\

spring-aspects-*.jar,\

spring-beans-*.jar,\

Record the problem and complete the solution.

ImportError: cannot import name’Feature’from’setuptools’ 20915s; pip install –upgrade pip setuptools==45.2.0

By statement

from keras.utils import to_categorical

Errors are reported when importing category, as follows:
importerror: cannot import name ‘to_ categorical’ from ‘keras.utils’

Change the import code as follows:

from tensorflow.keras.utils import to_categorical

I have an interceptor. Before entering my controller, I read the body of the request. The original request is not repeatable, so I decided to wrap it with contentcacheingrequestwrapper. However, when using @ requestbody to receive parameters, the back-end reported an error. The log is as follows:

Resolved [org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing

Front end response is

{
    "timestamp": "2021-07-21T11:53:55.637+0000",
    "status": 400,
    "error": "Bad Request",
    "message": "Required request body is missing: public java.lang.String com.example.demo.controller.HelloController.post(com.example.demo.model.PostVO,javax.servlet.http.HttpServletRequest)",
    "path": "/post"
}

It’s wrong. I’ve wrapped it up to be repeatable. After Google, stackoverflow didn’t find a solution, but
I found a description here. It says that contentcacheingrequestwrapper doesn’t overload the getinputstream method of httpservletrequestwrapper. This method will be used when receiving parameters with requestbody, So instead of using the contentcaching requestwrapper, I rewritten the httpservletrequestwrapper myself

When spring boot performs the packaging operation, the following errors are reported:

Execution default of goal org.springframework.boot:spring-boot-maven-plugin:XXXX RELEASE:repackage failed: Unable to find main class

The root cause is that in my project scenario,

Only the – boot sub module as shown in the figure produces executable jar packages. Other modules do not need to be executable. In my root POM, spring boot helps me add the following build strategy by default

< build>
        & lt; plugins>
            & lt; plugin>
                & lt; groupId> org.springframework.boot
                & lt; artifactId> spring-boot-maven-plugin
            & lt;/ plugin>
        & lt;/ plugins>
    & lt;/ build>

The solution is relatively simple, that is, remove the build part of the Spirng boot for all modules and put it into the sub module you need to package. Here is the API service boot module, Other modules do not need to produce executable jars.
————–
copyright notice: This article is an original article of CSDN blogger “@ within” and follows the CC 4.0 by-sa copyright agreement. Please attach the source link of the original text and this notice for reprint
original link: https://blog.csdn.net/qq_ 41264674/article/details/106539584