Java
javaTutorial
Methods and causes analysis of solving Chinese garbled characters in tomcat logs
Methods and causes analysis of solving Chinese garbled characters in tomcat logs
Tomcat is an open source Java Web application server that is widely used in Java Web development. When using Tomcat, we often encounter the problem of garbled log output. This article will delve into the reasons why Tomcat logs are garbled and provide solutions.
1. Reasons for garbled logs
1. Character encoding mismatch: Tomcat uses ISO-8859-1 character encoding by default, while the application may use other character encoding methods ( such as UTF-8). When the application outputs logs containing non-ISO-8859-1 characters, the output will be garbled.
2. The default encoding of the operating system does not match: Tomcat will set the IO input and output encoding according to the default encoding of the operating system when starting. If the default encoding of the operating system is inconsistent with the encoding used by the application, the logs will also be garbled.
3. Incorrect log output configuration: Tomcat outputs logs through frameworks such as Log4j or JUL. If the relevant configuration is incorrect, the logs will be garbled.
2. Solution
- Modify Tomcat character encoding configuration: In Tomcat's configuration file server.xml, find the Connector element, and you can specify the character encoding of the URI by setting the URIEncoding attribute. , usually using UTF-8. An example is as follows:
- Modify application encoding settings: In the application configuration file, you can set the corresponding character encoding. For example, for applications using the Spring framework, you can add the following code to web.xml:
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param><filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
- Modify the default encoding of the operating system: You can solve the log garbled problem by modifying the default encoding settings of the operating system. For specific steps, please refer to the relevant documentation of the operating system or use a search engine to query. Modify log output configuration: For applications that use frameworks such as Log4j or JUL for log output, you can solve the problem of garbled characters by modifying the corresponding configuration file. For specific configuration methods, please refer to the documentation or official website of the corresponding framework. Use transcoding filter: Add a transcoding filter in web.xml to set the character encoding of both request and response to UTF-8. An example is as follows:
<filter-name>encodingFilter</filter-name>
<filter-class>
org.apache.catalina.filters.SetCharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param><filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
The above is the detailed content of Methods and causes analysis of solving Chinese garbled characters in tomcat logs. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
How to check the number of concurrent connections in tomcat
Apr 21, 2024 am 08:12 AM
How to check the number of concurrent Tomcat connections: Visit the Tomcat Manager page (http://localhost:8080/manager/html) and enter your user name and password. Click Status->Sessions in the left navigation bar to see the number of concurrent connections at the top of the page.
Where is the tomcat installation directory?
Apr 21, 2024 am 07:48 AM
Tomcat installation directory: Default path: Windows: C:\Program Files\Apache Software Foundation\Tomcat 9.0macOS:/Library/Tomcat/Tomcat 9.0Linux:/opt/tomcat/tomcat9 Custom path: You can specify it during installation. Find the installation directory: use whereis or locate command.
Where is the root directory of the tomcat website?
Apr 21, 2024 am 09:27 AM
The Tomcat website root directory is located in Tomcat's webapps subdirectory and is used to store web application files, static resources, and the WEB-INF directory; it can be found by looking for the docBase attribute in the Tomcat configuration file.
How to deploy multiple projects in tomcat
Apr 21, 2024 am 09:33 AM
To deploy multiple projects through Tomcat, you need to create a webapp directory for each project and then: Automatic deployment: Place the webapp directory in Tomcat's webapps directory. Manual deployment: Manually deploy the project in Tomcat's manager application. Once the project is deployed, it can be accessed by its deployment name, for example: http://localhost:8080/project1.
How to configure domain name in tomcat
Apr 21, 2024 am 09:52 AM
To configure Tomcat to use a domain name, follow these steps: Create a server.xml backup. Open server.xml and add the Host element, replacing example.com with your domain name. Create an SSL certificate for the domain name (if required). Add an SSL connector in server.xml, change the port, keystore file, and password. Save server.xml. Restart Tomcat.
How to check the port number of tomcat
Apr 21, 2024 am 08:00 AM
The Tomcat port number can be viewed by checking the port attribute of the <Connector> element in the server.xml file. Visit the Tomcat management interface (http://localhost:8080/manager/html) and view the "Status" tab. Run "catalina.sh version" from the command line and look at the "Port:" line.
How to run two projects with different port numbers in tomcat
Apr 21, 2024 am 09:00 AM
Running projects with different port numbers on the Tomcat server requires the following steps: Modify the server.xml file and add a Connector element to define the port number. Add a Context element to define the application associated with the port number. Create a WAR file and deploy it to the corresponding directory (webapps or webapps/ROOT). Restart Tomcat to apply changes.
Implementing Machine Learning Algorithms in C++: Common Challenges and Solutions
Jun 03, 2024 pm 01:25 PM
Common challenges faced by machine learning algorithms in C++ include memory management, multi-threading, performance optimization, and maintainability. Solutions include using smart pointers, modern threading libraries, SIMD instructions and third-party libraries, as well as following coding style guidelines and using automation tools. Practical cases show how to use the Eigen library to implement linear regression algorithms, effectively manage memory and use high-performance matrix operations.
