/**
* 装饰request
*
* @ClassName: EncodingRequest
* @Description: TODO
* @author liuw
* @date 2018年11月8日 下午3:01:58
*
*/
public class EncodingRequest extends HttpServletRequestWrapper {
private HttpServletRequest req;
public EncodingRequest(HttpServletRequest request) {
super(request);
this.req = request;
}
public String getParameter(String name) {
String value = req.getParameter("name");
try {
value = new String(value.getBytes("iso-8859-1"), "utf-8");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
return value;
}
}
public class EncodingFilter implements Filter {
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain filterChain) throws IOException, ServletException {
// 处理post请求问题
req.setCharacterEncoding("utf-8");
HttpServletRequest request = (HttpServletRequest) req;
// 处理GET请求的编码问题
// String username = req.getParameter("username");
// System.out.println(new
// String(username.getBytes("iso-8859-1"),("UTF-8")));
// username = new String(username.getBytes("iso-8859-1"),("UTF-8"));
// req.setAttribute("username", username);
/*
* 调包request 1、写一个request的装饰类 2、在放行时,使用我们自己的request
*/
if (request.getMethod().equals("GET")) {
EncodingRequest er = new EncodingRequest(request);
filterChain.doFilter(er, res);
} else if (request.getMethod().equals("POST")) {
filterChain.doFilter(req, res);
}
}
public void init(FilterConfig fConfig) throws ServletException {
}
public void destroy() {
}
}
web.xml 配置
<filter>
<display-name>EncodingFilter</display-name>
<filter-name>EncodingFilter</filter-name>
<filter-class>com.lingnet.filter.EncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>