springboot接收json请求保存请求日志(ContentCachingRequestWrapper)

创建一个过滤器，在该过滤器中使用 ContentCachingRequestWrapper 包装 HttpServletRequest 对象。

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

@Configuration
@Order(0)
@Slf4j
public class RequestLoggingFilter extends OncePerRequestFilter {

    @Override
    protected void doFilterInternal(HttpServletRequest request, ServletResponse response, FilterChain filterChain) throws ServletException, IOException {
        if (contentType == null || !contentType.contains("application/json")) {
             filterChain.doFilter(request, response);
             return;
        }
        ContentCachingRequestWrapper requestWrapper = new ContentCachingRequestWrapper(request);

        try {
            filterChain.doFilter(requestWrapper, response);
        } finally {
            // 将请求参数从缓存中读取，并记录在日志中
            byte[] content = requestWrapper.getContentAsByteArray();
            if (content.length > 0) {
                log.info("Request body: {}", new String(content, 0, content.length, StandardCharsets.UTF_8));
            }
            // 清除 ContentCachingRequestWrapper 中的缓存
            requestWrapper.resetContent();
        }
    }
}

注册过滤器

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.servlet.Filter;

@Configuration
public class FilterConfig {

    @Bean
    public FilterRegistrationBean<Filter> requestLoggingFilter() {
        FilterRegistrationBean<Filter> registrationBean = new FilterRegistrationBean<>();
        registrationBean.setFilter(new RequestLoggingFilter());
        registrationBean.addUrlPatterns("/*");
        registrationBean.setOrder(0);
        return registrationBean;
    }
}

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最后编辑时间为: 2023/03/22 11:04