SpringBoot记录请求返回日志

     SpringBoot监控请求响应日志，可以借此分析了解项目中的相关性能，安全方面的问题，开发人员也可以方便的拿取日志进行排错检查问题等一系列操作。

      1.思考--request请求和rsponse请求都只能拿一次body体里面的参数，怎么办？

      2.记录哪些数据？

      3.拿到的日志数据如何存储？

      4.实现方式？

      5.是否有实现漏洞？

1.思考--request请求和rsponse请求都只能拿一次body体里面的参数，怎么办？

   由于body体的特性导致数据拿取一次后就无法再次执行，我们可以实现相应的请求响应包装类，拿取数据后进行回填（内部再次请求）,从而获取相应请求响应参数后，可以正确执行业务方法

    RequestWrapper------Request包装类

   

package com.youfuli.task.interceptor;

import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.*;
import java.nio.charset.Charset;

public class RequestWrapper extends HttpServletRequestWrapper {
    private final String body;
    public RequestWrapper(HttpServletRequest request) throws IOException {
        super(request);
        StringBuilder stringBuilder = new StringBuilder();
        BufferedReader bufferedReader = null;
        try {
            InputStream inputStream = request.getInputStream();
            if (inputStream != null) {
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                char[] charBuffer = new char[128];
                int bytesRead = -1;
                while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {
                    stringBuilder.append(charBuffer, 0, bytesRead);
                }
            } else {
                stringBuilder.append("");
            }
        } catch (IOException ex) {
            throw ex;
        } finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                } catch (IOException ex) {
                    throw ex;
                }
            }
        }
        body = stringBuilder.toString();
    }

    @Override
    public ServletInputStream getInputStream() throws IOException {
        final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(body.getBytes());
        ServletInputStream servletInputStream = new ServletInputStream() {
            @Override
            public boolean isFinished() {
                return false;
            }
            @Override
            public boolean isReady() {
                return false;
            }
            @Override
            public void setReadListener(ReadListener readListener) {}
            @Override
            public int read() throws IOException {
                return byteArrayInputStream.read();
            }
        };
        return servletInputStream;

    }
    @Override
    public BufferedReader getReader() throws IOException {
        return new BufferedReader(new InputStreamReader(this.getInputStream()));
    }
    public String getBody() {
        return this.body;
    }

}

  ResponseWrapper------Response包装类

package com.youfuli.task.interceptor;

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;

/**
 * @author lxt
 */
public class ResponseWrapper extends HttpServletResponseWrapper {

    private ByteArrayOutputStream buffer;

    private ServletOutputStream out;

    public ResponseWrapper(HttpServletResponse httpServletResponse)
    {
        super(httpServletResponse);
        buffer = new ByteArrayOutputStream();
        out = new WrapperOutputStream(buffer);
    }

    @Override
    public ServletOutputStream getOutputStream()
            throws IOException
    {
        return out;
    }

    @Override
    public void flushBuffer()
            throws IOException
    {
        if (out != null)
        {
            out.flush();
        }
    }

    public byte[] getContent()
            th