标签：== while ret util string actor nbsp style res
在Filter中读取inputSeream读取一次之后就无法再次读取，解决办法如下：
public class LoggerHttpServletRequestWrapper extends HttpServletRequestWrapper {
private final byte[] body;
public LoggerHttpServletRequestWrapper(HttpServletRequest request) throws IOException {
super(request);
body = StreamUtils.readBytes(request.getInputStream());
}
@Override
public BufferedReader getReader() {
return new BufferedReader(new InputStreamReader(getInputStream()));
}
@Override
public ServletInputStream getInputStream() {
final ByteArrayInputStream bais = new ByteArrayInputStream(body);
return new ServletInputStream() {
@Override
public boolean isFinished() {
return false;
}
@Override
public boolean isReady() {
return false;
}
@Override
public void setReadListener(ReadListener readListener) {
}
@Override
public int read() {
return bais.read();
}
};
}
}
调用如下
@Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { ServletRequest requestWrapper = null; if(request instanceof HttpServletRequest) { requestWrapper = new LoggerHttpServletRequestWrapper((HttpServletRequest) request); if (((HttpServletRequest) request).getMethod().equals("POST")){ String path = ((HttpServletRequest) request).getServletPath(); String param = StreamUtils.streamToString(requestWrapper.getInputStream()); LoggerFactory.getLogger("filter."+path).info(param); }else if (((HttpServletRequest) request).getMethod().equals("GET")){ String path = ((HttpServletRequest) request).getServletPath(); String queryString = ((HttpServletRequest) request).getQueryString(); LoggerFactory.getLogger("filter."+path).info(queryString); } } if(requestWrapper == null) { chain.doFilter(request, response); } else { chain.doFilter(requestWrapper, response); } }
工具类如下
public class StreamUtils { /** * @param inputStream inputStream * @return 字符串转换之后的 */ public static String streamToString(InputStream inputStream) { try(BufferedReader br =new BufferedReader(new InputStreamReader(inputStream, "UTF-8"))) { StringBuilder builder = new StringBuilder(); String output; while((output = br.readLine())!=null){ builder.append(output); } return builder.toString(); } catch (IOException e) { throw new RuntimeException("Http 服务调用失败",e); } } public static byte[] readBytes(ServletInputStream inputStream) { return streamToString(inputStream).getBytes(Charset.forName("UTF-8")); } }
解决HttpServletRequest InputStream只能读取一次问题
标签：== while ret util string actor nbsp style res
原文地址：https://www.cnblogs.com/eviltuzki/p/9186165.html
