度假村网站建设,网站开发语言 .net,网站服务器 重启,购物网站建设新闻一、背景
在项目开发过程中#xff0c;需要对于某些接口统一处理。 这时候就需要获取响应的报文#xff0c;再对获取的报文进行统一处理。
二、了解过滤器
首先了解一下过滤器拦截器的区别#xff1a; JAVA中的拦截器、过滤器#xff1a;https://blog.csdn.net/qq_38254…一、背景
在项目开发过程中需要对于某些接口统一处理。 这时候就需要获取响应的报文再对获取的报文进行统一处理。
二、了解过滤器
首先了解一下过滤器拦截器的区别 JAVA中的拦截器、过滤器https://blog.csdn.net/qq_38254635/article/details/131201519
三、代码
新建 WebResponseWrapper.java 重写 HttpServletResponseWrapper处理json报文请求
package com.config.filter;import javax.servlet.ServletOutputStream;
import javax.servlet.WriteListener;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;public class WebResponseWrapper extends HttpServletResponseWrapper {private ByteArrayOutputStream buffer null;private ServletOutputStream out null;private PrintWriter writer null;public WebResponseWrapper(HttpServletResponse response) throws IOException {super(response);buffer new ByteArrayOutputStream();out new WrapperOutputStream(buffer);writer new PrintWriter(new OutputStreamWriter(buffer,this.getCharacterEncoding()));}Overridepublic ServletOutputStream getOutputStream() throws IOException {return out;}Overridepublic PrintWriter getWriter() throws UnsupportedEncodingException {return writer;}Overridepublic void flushBuffer() throws IOException {if (out ! null) {out.flush();}if (writer ! null) {writer.flush();}}Overridepublic void reset() {buffer.reset();}public byte[] getResponseData() throws IOException {flushBuffer();return buffer.toByteArray();}private class WrapperOutputStream extends ServletOutputStream {private ByteArrayOutputStream bos null;public WrapperOutputStream(ByteArrayOutputStream stream)throws IOException {bos stream;}Overridepublic void write(int b) throws IOException {bos.write(b);}Overridepublic void write(byte[] b) throws IOException {bos.write(b, 0, b.length);}Overridepublic boolean isReady() {return false;}Overridepublic void setWriteListener(WriteListener writeListener) {}}}
新建WebResponseFilter.java响应过滤器处理参数加密、字符串替、添加响应参数等等。
package com.config.filter;import com.Utils;
import org.springframework.stereotype.Component;
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 java.io.IOException;
import java.io.PrintWriter;Component
public class WebResponseFilter implements Filter {Overridepublic void init(FilterConfig filterConfig) throws ServletException {}Overridepublic void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {HttpServletRequest httpRequest (HttpServletRequest) request;HttpServletResponse httpResponse (HttpServletResponse) response;if(checkPath(httpRequest.getRequestURI())){chain.doFilter(httpRequest, httpResponse);} else {response.setContentType(application/json; charsetutf-8);response.setCharacterEncoding(UTF-8);WebResponseWrapper webResponseWrapper new WebResponseWrapper((HttpServletResponse) response);chain.doFilter(request, webResponseWrapper);byte[] resData webResponseWrapper.getResponseData();PrintWriter out response.getWriter();String encrypt Utils.handleResponse(new String(resData, UTF-8));out.print(encrypt.replaceAll([\\s*\t\n\r], ));out.flush();out.close();}}private boolean checkPath(String url){if(!on.equals(ENCRYPT_SWITCH)) return true;for (String path : RESPONSE_LIST) {if(url.contains(path)) return true;}return false;}Overridepublic void destroy() {}}说明 ENCRYPT_SWITCH开关配置 RESPONSE_LIST忽略处理路径配置如一些导出的操作。 Utils.handleResponse()需要对报文进行的处理操作。
相关链接 SpringBoot过滤器获取请求的参数https://blog.csdn.net/qq_38254635/article/details/136041159 JAVA中的拦截器、过滤器https://blog.csdn.net/qq_38254635/article/details/131201519
OK就这些吧。
有什么不对的还望指正书写不易觉得有帮助就点个赞吧☺☺☺
