在web.xml配置filter时一定要放在所有过滤器之前
<!--处理中文乱码-->
<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><!-- 写成/时,上传时会乱码 -->
</filter-mapping>
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public class EncodingFilter implements Filter {
private String encoding = "utf-8";
@Override
public void init(FilterConfig filterConfig) throws ServletException {
if(filterConfig.getInitParameter("encoding")!=null){
encoding=filterConfig.getInitParameter("encoding");
}
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request=(HttpServletRequest)servletRequest;
HttpServletResponse response=(HttpServletResponse)servletResponse;
request.setCharacterEncoding(encoding);
response.setCharacterEncoding(encoding);
filterChain.doFilter(request,response);
}
@Override
public void destroy() {
}
}
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>com.imooc.oa.global.EncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/</url-pattern>
</filter-mapping>
(记录于慕课网SSM oa项目)
<!--配置编码过滤器,一定要放在所有过滤器之前-->
<filter>
<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>
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
(记录于尚硅谷ssm-crud项目)