<filter><filter-name>encoding</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>utf-8</param-value></init-param></filter><filter-mapping><filter-name>encoding</filter-name><url-pattern>/*</url-pattern></filter-mapping>

 <Connector port="8080" protocol="HTTP/1.1"connectionTimeout="20000"redirectPort="8443" />

 <Connector port="8080" protocol="HTTP/1.1"connectionTimeout="20000"URIEncoding="UTF-8"redirectPort="8443" />

@RequestMapping("/hello")public String hello(String name,ModelMap modelMap){System.out.println(name);//相当于request.setAttribute("msg","modelMap");modelMap.addAttribute("msg",name);return "index.jsp";}

public class EncodingFilter implements Filter {private String encoding = "";@Overridepublic void init(FilterConfig filterConfig) throws ServletException {encoding = filterConfig.getInitParameter("encoding");}@Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {HttpServletRequest request = (HttpServletRequest) servletRequest;// 拦截所有的请求，解决全站中文乱码，指定request和response的编码request.setCharacterEncoding(encoding);   // 只对消息体有效  也就是只对post有效，get的参数是放在地址栏里的servletResponse.setContentType("text/html;charset=utf-8");// 对 request 进行包装CharacterRequest characterRequest = new CharacterRequest(request);filterChain.doFilter(characterRequest, servletResponse);}@Overridepublic void destroy() {}public class CharacterRequest extends HttpServletRequestWrapper {private HttpServletRequest request;public CharacterRequest(HttpServletRequest request) {super(request);this.request = request;}// 子类继承父类一定会覆写一些方法，此处用于重写getParameter()方法public String getParameter(String name) {// 调用被包装对象getParameter()方法，获得请求参数String value = super.getParameter(name);if (value == null) {return null;}String method = super.getMethod(); // 判断请求方式if ("get".equalsIgnoreCase(method)) {try {value = new String(value.getBytes("iso-8859-1"), "utf-8");} catch (UnsupportedEncodingException e) {throw new RuntimeException(e);}}return value; // 解决乱码后返回结果
    }
}

@RequestMapping("/hello")public String hello(HttpServletRequest request,ModelMap modelMap){    String name = request.getParameter("name");    System.out.println(name);    //相当于request.setAttribute("msg","modelMap");    modelMap.addAttribute("msg",name);    return "index.jsp";}

 @RequestMapping("/delete/{id}")public String delete(@PathVariable int id){System.out.println(id);return "/index.jsp";}

 @RequestMapping("/{id}/delete")public String delete(@PathVariable int id){System.out.println(id);return "/index.jsp";}

   @RequestMapping("/{uuid}/{id}/delete")public String delete(@PathVariable int id,@PathVariable String uuid){System.out.println(id);System.out.println(uuid);return "/index.jsp";}

 @RequestMapping("/{uuid}/{id}/delete")public String delete(@PathVariable("uuid") int id,@PathVariable("id") String uuid){System.out.println(id);System.out.println(uuid);return "/index.jsp";}

@Controller
@RequestMapping("hello2")
public class Hello2Controller {@RequestMapping(params = "method")public String hello(String name,ModelMap modelMap){//相当于request.setAttribute("msg","modelMap");System.out.println("method");return "index.jsp";}
}