jsp过滤器中文乱码解决

CharseterEncodingFilter1.java

private FilterConfig config = null; private String defaultCharset = "utf-8"; public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest req = (HttpServletRequest) request; HttpServletResponse resp = (HttpServletResponse) response; String charset = config.getInitParameter("charset"); if(charset==null){ charset = defaultCharset; } request.setCharacterEncoding(charset); //有时候response不用设置编码，因为servlet一般不做输出， //输出交由jsp来做，所以只要jsp页面设定编码即可 resp.setCharacterEncoding(charset); resp.setContentType("text/html;charset="+charset); chain.doFilter(req, resp); } public void init(FilterConfig filterConfig) throws ServletException { this.config = filterConfig; }

Web.xml

<filter> <filter-name>charseterEncodingFilter1</filter-name> <filter-class>cn.class3g.web.filter.CharseterEncodingFilter1</filter-class> </filter> <filter-mapping> <filter-name>charseterEncodingFilter1</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>

Index.jsp

<form action="/Filter_Test/servlet/TestCharsetServlet" method="post" > 城市：<input type="text" name="city" value="保定"/> <br/> <input type="submit" value="提交" /> </form>

TestCharsetServlet.java

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String city = request.getParameter("city"); response.getWriter().write(city); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String city = request.getParameter("city"); response.getWriter().write(city); } l将表单的method改为get再次测试，乱码。因为此种办法不能解决get方式的乱码问题