JSP三種中文解決方案及區別__JSP

方法一：只是針對某一個字串起作用
String name=request.getParameter("name");
name=new String(name.getBytes("ISO-8859-1"),"utf-8");

方法二：針對當前頁面有效
request.setCharacterEncoding("gbk");
String  name=request.getParameter("name");

方法三：針對真箇web網站有效
採用過濾器原理
public class SetEncodingFilter 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)) {             request.setCharacterEncoding(selectEncoding(request));         }         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")                 || value.equalsIgnoreCase("yes"))             this.ignore = true;         else             this.ignore = false;     }     protected String selectEncoding(ServletRequest request) {         return (this.encoding);     }     public FilterConfig getFilterConfig() {         return filterConfig;     }     public void setFilterConfig(FilterConfig filterConfig) {         this.filterConfig = filterConfig;     } }

web.xml
        <filter>         <filter-name>SetCharsetEncodingFilter</filter-name>         <filter-class>filter.SetEncodingFilter</filter-class>         <init-param>             <param-name>encoding</param-name>             <param-value>gbk</param-value>         </init-param>     </filter>     <filter-mapping>         <filter-name>SetCharsetEncodingFilter</filter-name>         <url-pattern>/*</url-pattern>     </filter-mapping>