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POHow to read request.getInputStream() multiple times
 

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    <p>I have this code:</p> <pre class="lang-java prettyprint-override"><code>@Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { logger.info("Filter start..."); HttpServletRequest httpRequest = (HttpServletRequest) request; HttpServletResponse httpResponse = (HttpServletResponse) response; String ba = getBaId(getBody(httpRequest)); if (ba == null) { logger.error("Wrong XML"); httpResponse.setStatus(HttpServletResponse.SC_BAD_REQUEST); } else { if (!clients.containsKey(ba)) { clients.put(ba, 1); logger.info("Client map : init..."); } else { clients.put(ba, clients.get(ba).intValue() + 1); logger.info("Threads for " + ba + " = " + clients.get(ba).toString()); } chain.doFilter(request, response); } } </code></pre> <p>and this web.xml (packages are shortened and names changed, but it looks the same)</p> <pre class="lang-xml prettyprint-override"><code>&lt;?xml version="1.0" encoding="ISO-8859-1"?&gt; &lt;web-app&gt; &lt;filter&gt; &lt;filter-name&gt;TestFilter&lt;/filter-name&gt; &lt;filter-class&gt;pkg.TestFilter&lt;/filter-class&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;TestFilter&lt;/filter-name&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt; &lt;context-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;WEB-INF/applicationContext.xml&lt;/param-value&gt; &lt;/context-param&gt; &lt;listener&gt; &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt; &lt;/listener&gt; &lt;servlet&gt; &lt;servlet-name&gt;Name&lt;/servlet-name&gt; &lt;display-name&gt;Name&lt;/display-name&gt; &lt;servlet-class&gt;pkg.Name&lt;/servlet-class&gt; &lt;load-on-startup&gt;1&lt;/load-on-startup&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;Name&lt;/servlet-name&gt; &lt;url-pattern&gt;/services/*&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;/web-app&gt; </code></pre> <p>I want to invoke the Servlet after the Filter. I was hoping <code>chain.doFilter(...)</code> could do the trick, but i always get this error on the line with <code>chain.doFilter(...)</code>:</p> <pre class="lang-none prettyprint-override"><code>java.lang.IllegalStateException: getInputStream() can't be called after getReader() at com.caucho.server.connection.AbstractHttpRequest.getInputStream(AbstractHttpRequest.java:1933) at org.apache.cxf.transport.http.AbstractHTTPDestination.setupMessage(AbstractHTTPDestination.java:249) at org.apache.cxf.transport.servlet.ServletDestination.invoke(ServletDestination.java:82) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:283) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:166) at org.apache.cxf.transport.servlet.AbstractCXFServlet.invoke(AbstractCXFServlet.java:174) at org.apache.cxf.transport.servlet.AbstractCXFServlet.doPost(AbstractCXFServlet.java:152) at javax.servlet.http.HttpServlet.service(HttpServlet.java:153) at javax.servlet.http.HttpServlet.service(HttpServlet.java:91) at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:103) at pkg.TestFilter.doFilter(TestFilter.java:102) at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87) at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187) at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265) at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:273) at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682) at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743) at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662) at java.lang.Thread.run(Thread.java:619) </code></pre>
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    1. COYes, it should work. Does the servlet work without the filter?
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    2. COThe servlet works without the filter and the filter without `chain.doFilter()` works too
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    3. COputting it outside if..else didn't help
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