tags: 代码库
#中文乱码#
public class CharacterEncodingFilter implements Filter { public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; HttpServletResponse response = (HttpServletResponse) resp; request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); chain.doFilter(new MyRequest(request), response); } public void init(FilterConfig filterConfig) throws ServletException { // TODO Auto-generated method stub } public void destroy() { // TODO Auto-generated method stub }}class MyRequest extends HttpServletRequestWrapper{ private HttpServletRequest request; public MyRequest(HttpServletRequest request) { super(request); this.request = request; } @Override public String getParameter(String name) { String value = this.request.getParameter(name); if(value==null){ return null; } if(!this.request.getMethod().equalsIgnoreCase("get")){ return value; } try { value = new String(value.getBytes("iso8859-1"),"UTF-8"); } catch (UnsupportedEncodingException e) { throw new RuntimeException(e); } return value; }}复制代码 #过滤HTML#
public class HtmlFilter implements Filter { public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; HttpServletResponse response = (HttpServletResponse) resp; chain.doFilter(new MyRequest2(request), response); } public void destroy() { // TODO Auto-generated method stub } public void init(FilterConfig filterConfig) throws ServletException { // TODO Auto-generated method stub }}class MyRequest2 extends HttpServletRequestWrapper{ private HttpServletRequest request; public MyRequest2(HttpServletRequest request) { super(request); this.request = request; } @Override public String getParameter(String name) { String value = this.request.getParameter(name); if(value==null){ return null; } return filter(value); } public String filter(String message) { if (message == null) return (null); char content[] = new char[message.length()]; message.getChars(0, message.length(), content, 0); StringBuffer result = new StringBuffer(content.length + 50); for (int i = 0; i < content.length; i++) { switch (content[i]) { case '<': result.append("<"); break; case '>': result.append(">"); break; case '&': result.append("&"); break; case '"': result.append("""); break; default: result.append(content[i]); } } return (result.toString()); } }复制代码 如果您觉得这篇文章帮助到了您，可以给作者一点鼓励