杨洋花少卫衣给许晴穿:急，有关jsp表单中的乱码问题

1) 在每个JSP页面开头写<%@ page contentType="text/html;charset=GBK"%>
2) 用以下方法进行转码。
static public String iso2gb(String str) {
if (str != null) {
byte[] tmpbyte=null;
try {
tmpbyte=str.getBytes("ISO8859_1");}
catch (UnsupportedEncodingException e) {
System.out.println(e.getMessage());}
try {
str=new String(tmpbyte,"GBK"); }
catch(UnsupportedEncodingException e) {
System.out.println(e.getMessage());}
}
return str;
}

一个好的方法是在web.xml部署一个中文乱码自动转换过滤器
web.xml
<filter>
<filter-name>CharacterEncoding</filter-name>
<filter-class>com.common.jsp.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>gb2312</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>CharacterEncoding</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>

具体javabean
public class CharacterEncodingFilter implements Filter {

private String encoding = null;

public void init(FilterConfig filterConfig) throws ServletException {
encoding = filterConfig.getInitParameter("encoding");
}

public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
request.setCharacterEncoding(encoding);
// 保存初始调用的URL，因为forward之后request.getServletPath()会发生改变
HttpServletRequest httpRequest = (HttpServletRequest)request;
httpRequest.getSession().setAttribute("INVOKE_ORIGINAL_URL", httpRequest.getServletPath());
filterChain.doFilter(request, response);
}

public void destroy() {
encoding = null;
}

}