用过滤器解决jsp中文乱码

最新推荐文章于 2021-06-04 17:00:42 发布

kingmxj

最新推荐文章于 2021-06-04 17:00:42 发布

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分类专栏： Java 文章标签： JSP Servlet Java XML

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本文介绍如何在JSP页面及过滤器中设置UTF-8编码，确保字符正确显示。通过修改JSP页头、创建编码过滤器并配置web.xml实现全局编码设置。

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1jsp页头设置为UTF-8 如下：
Java代码
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

2
过滤器，，也就一个java类而已：代码如下：
Java代码
import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class SetCharacterEncodingFilter implements Filter {
private String encoding;
public void init(FilterConfig filterConfig) throws ServletException {
// TODO Auto-generated method stub
this.encoding=filterConfig.getInitParameter("encoding");
}

public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
// TODO Auto-generated method stub
request.setCharacterEncoding(this.encoding);
response.setCharacterEncoding(this.encoding);
chain.doFilter(request,response);
}

public void destroy() {
// TODO Auto-generated method stub

}

}

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class SetCharacterEncodingFilter implements Filter {
private String encoding;
public void init(FilterConfig filterConfig) throws ServletException {
// TODO Auto-generated method stub
this.encoding=filterConfig.getInitParameter("encoding");
}

public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
// TODO Auto-generated method stub
request.setCharacterEncoding(this.encoding);
response.setCharacterEncoding(this.encoding);
chain.doFilter(request,response);
}

public void destroy() {
// TODO Auto-generated method stub

}

}

3web.xml中添加过滤器的配置：
Java代码
<filter>
<filter-name>SetCharacterEncodingFilter</filter-name>
<filter-class>SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>SetCharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>