HTTP Status 500 – Internal Server Error


Type Exception Report

Message java.lang.IllegalStateException: Invalid use of SingleClientConnManager: connection still allocated.

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: java.lang.IllegalStateException: Invalid use of SingleClientConnManager: connection still allocated.
Make sure to release the connection before allocating another one.
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:598)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:509)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.api.security.xss.XSSSecurityFilter.doFilter(XSSSecurityFilter.java:74)
	com.common.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:52)

Root Cause

java.lang.IllegalStateException: Invalid use of SingleClientConnManager: connection still allocated.
Make sure to release the connection before allocating another one.
	org.apache.http.impl.conn.SingleClientConnManager.getConnection(SingleClientConnManager.java:217)
	org.apache.http.impl.conn.SingleClientConnManager$1.getConnection(SingleClientConnManager.java:190)
	org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:401)
	org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
	org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
	org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732)
	com.api.util.HttpClientUtil.post(HttpClientUtil.java:100)
	com.api.dealer.DealerDao.searchWordSolrFile(DealerDao.java:2889)
	com.api.dealer.DealerDao.updKeyWordViews(DealerDao.java:2869)
	org.apache.jsp.www_005fnews.allkeywords.index_jsp._jspService(index_jsp.java:156)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:71)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.api.security.xss.XSSSecurityFilter.doFilter(XSSSecurityFilter.java:74)
	com.common.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:52)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/8.5.54