java获取http接口请求参数

java获取接口请求参数

GET请求

public static String getParams(HttpServletRequest request) {
        if (request == null) {
            return "";
        } else {
            String method = request.getMethod();
            if (RequestMethod.GET.name().equals(method)) {
                Map<String, Object> params = Maps.newHashMap();
                Map<String, String[]> webParamMap = request.getParameterMap();
                if (webParamMap != null) {
                    params.putAll(webParamMap);
                }
                return MapUtils.isEmpty(params) ? "" : JSON.toJSONString(params);
            } else {
                return getPostParam(request);
            }
        }
    }

POST请求

• 有一定经验的都知道，如果我们在Filter中读取了HttpServletRequest或者HttpServletResponse的流，就没有办法再次读取了，这样就会造成请求异常。所以，我们需要借助 Spring 提供的ContentCachingRequestWrapper和ContentCachingRequestWrapper实现数据流的重复读取。

我们编写一个过滤器:

@Component
public class RequestWrapperFilter extends OncePerRequestFilter {

    @Override
    protected void doFilterInternal(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, FilterChain filterChain) throws ServletException, IOException {
        filterChain.doFilter(new ContentCachingRequestWrapper(httpServletRequest), httpServletResponse);
    }
}

根据request获取post请求参数

private static String getPostParam(HttpServletRequest request) {
        ContentCachingRequestWrapper wrapper = (ContentCachingRequestWrapper) request;
        return StringUtils.toEncodedString(wrapper.getContentAsByteArray(), Charset.forName(wrapper.getCharacterEncoding()));
}

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