springboot 拦截器重复读取请求体

package cn.silence.config;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;


/**
 * @author 你的名字
 */
@WebFilter(filterName = "FirstFilter", urlPatterns = "/*")
public class PreBodyFilter implements Filter {
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        if (request instanceof HttpServletRequest) {
            request.setCharacterEncoding("UTF-8");
            chain.doFilter(new HttpServletRequestWrapper((HttpServletRequest) request), response);
        } else {
            chain.doFilter(request, response);
        }
    }
}
启动类:@ServletComponentScan
package cn.silence.config;

import org.springframework.util.StreamUtils;

import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import java.io.*;


/**
 * @author 你的名字
 */
public class HttpServletRequestWrapper extends javax.servlet.http.HttpServletRequestWrapper {
    private final byte[] body;

    public HttpServletRequestWrapper(HttpServletRequest request) throws IOException {
        super(request);
        body = StreamUtils.copyToByteArray(request.getInputStream());
    }

    @Override
    public ServletInputStream getInputStream() {
        InputStream bodyStream = new ByteArrayInputStream(body);
        return new ServletInputStream() {

            @Override
            public int read() throws IOException {
                return bodyStream.read();
            }

            @Override
            public boolean isFinished() {
                return false;
            }

            @Override
            public boolean isReady() {
                return true;
            }


            @Override
            public void setReadListener(ReadListener readListener) {

            }
        };
    }

    @Override
    public BufferedReader getReader() {
        return new BufferedReader(new InputStreamReader(getInputStream()));
    }
}

你可能感兴趣的:(工具,spring,boot,java,spring)