问题： 客户SDK对接服务，默认只识别200和非200的请求状态码。需要修改当前应用的状态码(如将201转为200)

解决方案：通过扩展HttpServletResponseWrapper，获取到每个请求的状态码，满足条件的做修改即可

具体代码：

package com.supermap.huawei;

import java.io.IOException;

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.HttpServletResponse;

import javax.servlet.http.HttpServletResponseWrapper;

/**

* 1、输出http信息 2、修改返回的状态码

*

*/

public class ResponseCodeFilter implements Filter {

@Override

public void init(FilterConfig filterConfig) throws ServletException {

}

@Override

public void doFilter(ServletRequest req, ServletResponse res,

FilterChain chain) throws IOException, ServletException {

HttpServletRequest request = (HttpServletRequest) req;

StatusExposingServletResponse response = new StatusExposingServletResponse(

(HttpServletResponse) res);

String ip = request.getRemoteAddr();

String method = request.getMethod();

String url = request.getRequestURI();

String characterEncoding = request.getCharacterEncoding();

String referer = request.getHeader("Referer");

chain.doFilter(request, response);

int status = response.getStatus();

System.out.println(ip + method + characterEncoding + referer + url

+ status);

// String s1 = "" + status;

if (status == 201) {

// if(s1.contains("20")){

response.setStatus(200);

} else {

response.setStatus(status);

}

}

@Override

public void destroy() {

}

public static class StatusExposingServletResponse extends

HttpServletResponseWrapper implements HttpServletResponse {

private int status = 200;

public StatusExposingServletResponse(HttpServletResponse response) {

super(response);

}

@Override

public void setStatus(int sc) {

this.status = sc;

super.setStatus(sc);

}

public int getStatus() {

return status;

}

}

}

web.xml中的配置

ResponseCodeFilter

com.supermap.test.ResponseCodeFilter

ResponseCodeFilter

/*

修改前：

修改后