完美解决中文乱码的问题

最新推荐文章于 2022-05-17 09:33:19 发布

iteye_9188

最新推荐文章于 2022-05-17 09:33:19 发布

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分类专栏： Java 文章标签： Servlet Spring Web XML

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1 借助spring

web.xml中增加

<filter>   
<filter-name>Set Character Encoding</filter-name>   
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>   
<init-param>   
    <param-name>encoding</param-name>   
    <param-value>utf8</param-value>   
</init-param>   
</filter>   
<filter-mapping>   
    <filter-name>Set Character Encoding</filter-name>   
    <url-pattern>/*</url-pattern>   
</filter-mapping>

配置文件即可，如果不用spring怎么办呢？有办法啊

<filter>
   <filter-name>encodingFilter</filter-name>
   <filter-class>com.rda.commons.filter.ChineseFilter</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>

配置文件，然后呢，转码的过滤器就要自己写咯

package com.filter;

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;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* 
* 创建人：金鑫
* 创建时间：2008-9-21 下午03:27:03
* 类作用：中文转码过滤器
*
*/
@SuppressWarnings("serial")
public class ChineseFilter extends HttpServlet implements Filter
{
private FilterConfig filterConfig;

public void init(FilterConfig filterConfig) throws ServletException
{
   this.filterConfig = filterConfig;
}

public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain)
{
   try
   {
    String encoding = filterConfig.getInitParameter("encoding");
    //从WEB.xml配置文件中取出参数，这样我们可以通过配置修改编码格式.
    request.setCharacterEncoding(encoding);//设置请求的编码格式

    filterChain.doFilter(request, response);
   }
   catch (ServletException sx)
   {
    filterConfig.getServletContext().log(sx.getMessage());
   }
   catch (IOException iox)
   {
    filterConfig.getServletContext().log(iox.getMessage());
   }
}

public void destroy()
{
}

protected void doGet(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException
{
   super.doGet(arg0, arg1);
}

protected void doPost(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException
{
   super.doPost(arg0, arg1);
}

/**
* @function 验证数据是否为空，如果为空则转换
* @param param
* @return String
*/
public String checkNull(String param)
{
   if (param == null || param.equals(""))
   {
    return "";
   }
   else
   {
    return param;
   }
}
}

OK，完美解决掉啦。

其实解决乱码很简单的，就是通过过滤器来实现的，呵呵很简单吧？