jsp中文参数问题

Question

String s=resquest.getParameter("content");

Answer 1

一般要把gbk转换为iso8859的，
以下是一个转换方法：
 public static String fromGBKtoISO(String s, boolean rSwitch){
    try {      
      if(!rSwitch)
        return s;
      if (s==null || s.length()<1) return s;
      byte[] temp = s.getBytes("GBK");
      String a = new String(temp,"iso8859-1");
      return a;
    }catch (Exception e) {
      return null;
    }
  }

Answer 2

tomcat下面有一个SetCharacterEncodingFilter的例子
源码如下
package filters;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.UnavailableException;public class SetCharacterEncodingFilter
    implements Filter {  protected String encoding = null;  protected FilterConfig filterConfig = null;  protected boolean ignore = true;  public void destroy() {    this.encoding = null;
    this.filterConfig = null;  }  public void doFilter(ServletRequest request, ServletResponse response,
                       FilterChain chain) throws IOException, ServletException {    if (ignore || (request.getCharacterEncoding() == null)) {
      String encoding = selectEncoding(request);
      if (encoding != null)
        request.setCharacterEncoding(encoding);
    }    chain.doFilter(request, response);  }  public void init(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);  }}然后在web.xml里面加入以下
<filter>
    <filter-name>Set Character Encoding</filter-name>
    <filter-class>filters.SetCharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>GBK</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>Set Character Encoding</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

Answer 3

补充以上代码对post方法的数据有效对get无效

Answer 4

String s=new String(resquest.getParameter("content").getBytes("ISO_8859_1"),"GB2312");
out.println(s);

Answer 5

String s=new String(resquest.getParameter("content").getBytes("ISO8859_1"),"GB2312");
out.println(s);

Answer 6

各位大哥的热心帮助心领.可是
url?content=中文
这种属于get吧.
再都我上边说的工试过
new String (***.getByte("iso8859-1"),"gb2312")不好用.
各位的心意我领了.谢谢