How to Resolve Character Encoding Issues in Spring MVC Using UTF-8?
Nov 11, 2024 pm 08:16 PMSpring MVC UTF-8 Encoding: Resolving Character Encoding Issues
Introduction
When working with Spring MVC, character encoding plays a crucial role in displaying special characters correctly on JSP pages. This article addresses the issue of encoding errors and provides a solution to ensure proper UTF-8 character rendering.
Problem Statement
A user encountered encoding problems when displaying UTF-8 characters on JSP pages. The issue persisted despite setting the default encoding to UTF-8 in SpringSource Tool Suite.
Solution
Upon further investigation, it was determined that registering Spring's CharacterEncodingFilter in web.xml could resolve the issue. Here's the filter configuration:
<filter> <filter-name>encodingFilter</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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
Tomcat Configuration
If using Tomcat, the URIEncoding parameter in server.xml must be set to UTF-8 for proper character encoding.
Checklist for UTF-8 Encoding in Spring MVC
To ensure proper UTF-8 encoding, follow this checklist:
- Register the CharacterEncodingFilter in web.xml as shown above.
- Set URIEncoding to UTF-8 in server.xml if using Tomcat.
-
Ensure that your JSP pages have the following directives:
- <%@ page language="java" pageEncoding="UTF-8"%>
- <%@ page contentType="text/html;charset=UTF-8" %>
- Make sure your source files are saved in UTF-8 encoding. In Eclipse, you can set this in Preferences > General > Workspace.
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