技术采用Filter+HttpServletRequestWrapper+HttpServletResponseWrapper+base64
1、前端加解密
1.1 vue引入开源的base64
1、下载依赖
$ npm install --save js-base64
2、使用方法：
import {Base64} from 'js-base64'
Base64.encode('hellow world'); // 编码 aGVsbG93IFdvcmxk
Base64.decode('aGVsbG93IFdvcmxk'); // 解码 hellow World 1.2 在若依系统的request.js中引入base64
1.3 修改若依系统的request.js中的request拦截器-对config.data进行加密处理
1.4 修改若依系统的response.js中的响应拦截器-对后端传入的数据进行解密并转成json
2、后端加解密
2.1 新增过滤器ResponseDataFilter（名字可以随便来，但是要在注册Bean的时候，要统一）
import com.ruoyi.common.utils.sign.Base64;
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.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;
public class ResponseDataFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
// 初始化操作，可留空
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest requests = (HttpServletRequest) request;
String requestBody = getRequestBody(requests);
System.out.println(requestBody);
//解密请求报文
String requestBodyMw = new String(Base64.decode(requestBody), "utf-8");
System.out.println("解密请求数据："+requestBodyMw);
WrapperedRequest wrapRequest = new WrapperedRequest( (HttpServletRequest) request, requestBodyMw);
WrapperedResponse wrapResponse = new WrapperedResponse((HttpServletResponse) response);
chain.doFilter(wrapRequest, wrapResponse);
byte[] data = wrapResponse.getResponseData();
System.out.println("原始返回数据： " + new String(data, "utf-8"));
// 加密返回报文
String responseBodyMw = Base64.encode(data);
System.out.println("加密返回数据： " + responseBodyMw);
response.getOutputStream().write(responseBodyMw.getBytes());
}
@Override
public void destroy() {
// 销毁操作，可留空
}
private String getRequestBody(HttpServletRequest req) {
try {
BufferedReader reader = req.getReader();
StringBuffer sb = new StringBuffer();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
String json = sb.toString();
return json;
} catch (IOException e) {
System.out.println("请求体读取失败"+e.getMessage());
}
return "";
}
}2.2 把自己添加过滤器注册为bean(在FilterConfig.java文件写，也可以自己写配置文件)
-
@Bean public FilterRegistrationBean requestDataFilter() { FilterRegistrationBean registration = new FilterRegistrationBean(); //自己的过滤器叫什么名字就写上什么名字 registration.setFilter(new ResponseDataFilter()); registration.addUrlPatterns("/*"); registration.setName("responseDataFilter"); //过滤器的顺序，数字越小，越先执行，反之亦然 registration.setOrder(FilterRegistrationBean.LOWEST_PRECEDENCE); return registration; }2.3 继承HttpServletRequestWrapper和继承HttpServletResponseWrapper
-
import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.io.UnsupportedEncodingException; import javax.servlet.ServletOutputStream; import javax.servlet.WriteListener; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpServletResponseWrapper; public class WrapperedResponse extends HttpServletResponseWrapper { private ByteArrayOutputStream buffer = null; private ServletOutputStream out = null; private PrintWriter writer = null; public WrapperedResponse(HttpServletResponse resp) throws IOException { super(resp); // 真正存储数据的流 buffer = new ByteArrayOutputStream(); out = new WapperedOutputStream(buffer); writer = new PrintWriter(new OutputStreamWriter(buffer, this.getCharacterEncoding())); } /** 重载父类获取outputstream的方法 */ @Override public ServletOutputStream getOutputStream() throws IOException { return out; } /** 重载父类获取writer的方法 */ @Override public PrintWriter getWriter() throws UnsupportedEncodingException { return writer; } /** 重载父类获取flushBuffer的方法 */ @Override public void flushBuffer() throws IOException { if (out != null) { out.flush(); } if (writer != null) { writer.flush(); } } @Override public void reset() { buffer.reset(); } /** 将out、writer中的数据强制输出到WapperedResponse的buffer里面，否则取不到数据 */ public byte[] getResponseData() throws IOException { flushBuffer(); return buffer.toByteArray(); } /** 内部类，对ServletOutputStream进行包装 */ private class WapperedOutputStream extends ServletOutputStream { private ByteArrayOutputStream bos = null; public WapperedOutputStream(ByteArrayOutputStream stream) throws IOException { bos = stream; } @Override public void write(int b) throws IOException { bos.write(b); } @Override public void write(byte[] b) throws IOException { bos.write(b, 0, b.length); } @Override public boolean isReady() { // TODO Auto-generated method stub return false; } @Override public void setWriteListener(WriteListener writeListener) { // TODO Auto-generated method stub } } }import java.io.BufferedReader; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.StringReader; import javax.servlet.ReadListener; import javax.servlet.ServletInputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletRequestWrapper; public class WrapperedRequest extends HttpServletRequestWrapper { private String requestBody = null; HttpServletRequest req = null; public WrapperedRequest(HttpServletRequest request) { super(request); this.req = request; } public WrapperedRequest(HttpServletRequest request, String requestBody) { super(request); this.requestBody = requestBody; this.req = request; } /** * (non-Javadoc) * * @see javax.servlet.ServletRequestWrapper#getReader() */ @Override public BufferedReader getReader() throws IOException { return new BufferedReader(new StringReader(requestBody)); } /** * (non-Javadoc) * * @see javax.servlet.ServletRequestWrapper#getInputStream() */ @Override public ServletInputStream getInputStream() throws IOException { return new ServletInputStream() { private InputStream in = new ByteArrayInputStream( requestBody.getBytes(req.getCharacterEncoding())); @Override public int read() throws IOException { return in.read(); } @Override public boolean isFinished() { // TODO Auto-generated method stub return false; } @Override public boolean isReady() { // TODO Auto-generated method stub return false; } @Override public void setReadListener(ReadListener readListener) { // TODO Auto-generated method stub } }; } }记录技术，留下痕迹。如果有什么不合适的地方，请各位大佬留言指出，小弟改进！！！！
