閒來無事,寫了一個filter,用來解決get/post亂碼提交問題

package com.nrsc.utils;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import
 
 javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;

public class EncodeFilter implements Filter {
    public void destroy() {

    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws
 
 IOException, ServletException {
        MyRequest myrequest = new MyRequest((HttpServletRequest) request);
        chain.doFilter(myrequest, response);
    }

    public void init(FilterConfig fConfig) throws ServletException {
    }

}
//注意一個java檔案裡只能有一個類用public修飾
class MyRequest extends HttpServletRequestWrapper {

    private
 
 HttpServletRequest request;

    public MyRequest(HttpServletRequest request) {
        super(request);
        this.request = request;
    }

    @Override
    public String getParameter(String name) {
        try {
            String method = request.getMethod();
            if ("GET".equalsIgnoreCase(method)) {
                // 獲取請求的引數 亂碼
                String value = request.getParameter(name);
                value = new String(value.getBytes("iso-8859-1"), "utf-8");
                return value;

            } else if ("POST".equalsIgnoreCase(method)) {
                request.setCharacterEncoding("utf-8");
            }
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return super.getParameter(name);
    }

}