转发：tomcat的acess_log打印post请求参数,分析日志

转载自：https://blog.csdn.net/qq_30121245/article/details/52861935

1) 在项目中加入相应的包和类，加载那里无所谓，只要web.xml配置正确即可

package filters;

import java.io.IOException;
import java.util.Enumeration;

import javax.servlet.*;

public final class PostDataDumperFilter implements Filter {

private FilterConfig filterConfig = null;

public void destroy() {
this.filterConfig = null;
}

public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {
if (filterConfig == null)
return;

Enumeration names = request.getParameterNames();
StringBuffer output=new StringBuffer();
while (names.hasMoreElements()) {
String name = (String) names.nextElement();
output.append(name+"=");
String values[] = request.getParameterValues(name);
for (int i = 0; i < values.length; i++) {
if (i > 0) output.append("' ");
output.append(values[i]);
}
if(names.hasMoreElements()) output.append("&");
}
request.setAttribute("post", output);
chain.doFilter(request, response);
}

public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
}
}

2) 配置web.xm，一般在路径 main/webapps/WEB-INF/web.xml:
<filter>
<filter-name>post-data-dumper-filter</filter-name>
<filter-class>filters.PostDataDumperFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>post-data-dumper-filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

3) now you have the attribute postdata for each request and you can easily log it in access valve, for example:

巴特西

转发：tomcat的acess_log打印post请求参数,分析日志

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