struts2:Exception occurred during processing request: null

今天编写了struts2中经过token防止表单的重复提交,实现的过程当中出现了struts2:Exception occurred during processing request: null异常html 具体代码以下:java 警告: Form token H1EAQ2YY2YACW9RCY48RPM33PISDFECY does not match the session token 2S
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