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修复servlet过滤器bug #10

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修复servlet过滤器bug #10

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15 changes: 8 additions & 7 deletions tlog-webroot/src/main/java/com/yomahub/tlog/web/filter/TLogServletFilter.java
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Original file line number Diff line number Diff line change
Expand Up @@ -23,15 +23,16 @@ public void init(FilterConfig filterConfig) throws ServletException {
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
if (request instanceof HttpServletRequest && response instanceof HttpServletResponse){
try{
TLogWebCommon.loadInstance().preHandle((HttpServletRequest)request);
//把traceId放入response的header，为了方便有些人有这样的需求，从前端拿整条链路的traceId
((HttpServletResponse)response).addHeader(TLogConstants.TLOG_TRACE_KEY, TLogContext.getTraceId());
}finally {
TLogWebCommon.loadInstance().afterCompletion();
}
TLogWebCommon.loadInstance().preHandle((HttpServletRequest)request);
//把traceId放入response的header，为了方便有些人有这样的需求，从前端拿整条链路的traceId
((HttpServletResponse)response).addHeader(TLogConstants.TLOG_TRACE_KEY, TLogContext.getTraceId());
}
chain.doFilter(request, response);

if (request instanceof HttpServletRequest && response instanceof HttpServletResponse) {
// 放置在doFilter后面, 否则未进入方法就清空了
TLogWebCommon.loadInstance().afterCompletion();
}
}

@Override
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