转换编码方式

普通方式：

String str = "abc";
str = new String(str.getBytes(“ISO-8859-1”)，”GB2312”); 

--------------------

Struts 1方式：

package cn.wangy.system;

public class MyProRequestProcessor extends RequestProcessor{

	protected boolean processPreprocess(HttpServletRequest request,HttpServletResponse response){
		try{
			request.setCharacterEncoding("UTF-8");
		}catch(Exception e){
        	e.printStackTrace();
 		}
       	return true;
	}
}

在struts-config.xml追加:

<controller processorClass="cn.wangy.system.MyProRequestProcessor"/>

 --------------------

Filter方式：

package cn.wangy.system;

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;

/**
 * 转换编码
 * @author Ferryman
 *
 */
public class CharacterEncodingFilter implements Filter{

	protected String encoding = null;
	protected FilterConfig filterConfig = null;
	protected boolean ignore = true;
    
	public voiddestroy(){
		this.encoding = null;
		this.filterConfig = null;
	}

	public voiddoFilter(ServletRequest request,ServletResponseresponse,FilterChain chain) throwsIOException,ServletException{
		if(ignore || (request.getCharacterEncoding() == null)){
			Stringencoding = selectEncoding(request);
			if(encoding != null)
				request.setCharacterEncoding(encoding);
		}
		chain.doFilter(request,response);
	}

	public voidinit(FilterConfig filterConfig) throws ServletException{
		this.filterConfig = filterConfig;
		this.encoding = filterConfig.getInitParameter("encoding");
		String value= filterConfig.getInitParameter("ignore");
		if(value==null)
			this.ignore= true;
		else if(value.equalsIgnoreCase("true"))
			this.ignore= true;
		else if(value.equalsIgnoreCase("yes"))
			this.ignore= true;
		else
		this.ignore= false;
	}

	protected String selectEncoding(ServletRequest request){
		return(this.encoding);
	}
}

在web.xml中追加:

<filter>
	<filter-name>Set Character Encoding</filter-name>
	<filter-class>
		cn.wangy.system.CharacterEncodingFilter
	</filter-class>
	<init-param>
		<param-name>encoding</param-name>
		<param-value>UTF-8</param-value>
	</init-param>
</filter>

<filter-mapping>
	<filter-name>Set Character Encoding</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>