【文件属性】：
文件名称：java servlet 监听器
文件大小：243KB
文件格式：PPT
更新时间：2014-11-28 16:29:40
servlet 监听器 ppt
servelt 监听器
class MyRequest extends HttpServletRequestWrapper {
public MyRequest(HttpServletRequest request) {
super(request);
}
public String MyEncoding(String value) {
String value1 = null;
try {
value1 = new String(value.getBytes("iso-8859-1"), encoding);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return value1;
}
@Override
public String getParameter(String name) {
return MyEncoding(getHttpServletRequest().getParameter(name));
}
@Override
public String[] getParameterValues(String name) {
String[] values = getHttpServletRequest().getParameterValues(name);
if (values != null) {
for (int i = 0; i < values.length; i++) {
values[i] = MyEncoding(values[i]);
}
}
return values;
}
/**
* 从HttpServletRequestWrapper包装类中取出我们要进行转码的request；
*
* @return
*/
public HttpServletRequest getHttpServletRequest() {
return (HttpServletRequest) super.getRequest();
}
}
/**
* Default constructor
*/
public CharacterEncodingFilter() {
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
encoding = filterConfig.getInitParameter("encoding");
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
MyRequest myRequest = null;
HttpServletRequest request2 = (HttpServletRequest) request;
if (request2.getMethod() == "post") {
request2.setCharacterEncoding(encoding);
} else {
myRequest = new MyRequest(request2);
}
chain.doFilter(myRequest, response);
}
@Override
public void destroy() {
System.out.println("destroy被执行啦！");
}
}