struts2 拦截器获取请求数据

1.struts2版本号：2.5.26 。

2.自定义拦截器（此处，struts2已经对请求数据进行了处理，文件表单数据也可以获取,但处理不了文件）

public class XssInterceptor extends AbstractInterceptor {
    @Override
    public String intercept(ActionInvocation invocation) throws Exception {
        try {
             ActionContext actionContext = invocation.getInvocationContext();
             HttpParameters parameters  = actionContext.getParameters();
             for (Map.Entry<String,Parameter> entry : parameters.entrySet()) {
                  String key = entry.getValue().getName();
                  Parameter parameter = entry.getValue();
                  Object v = null;
                  if(parameter.isMultiple()) {//存在name值相同的表单元素
                      String[] multipleValues = parameter.getMultipleValues();
                      //处理值
                      v = multipleValues;
                  }else{
                       String value = entry.getValue().getValue();
                      //处理值
                       v = value;
                  }
                  Request request = new Parameter.Request(key,v);
                  entry.setValue(request);
             }
             return invocation.invoke();
        }catch (Exception e) {
            throw new Exception();
        }
    }

}

 

3.重写默认拦截器

<interceptors>
    <interceptor name="xssInterceptor" class="com.package.test.xss.XssInterceptor"/>
    <interceptor-stack name="sessionInterceptorStack">
        <interceptor-ref name="exception"/>
        <interceptor-ref name="alias"/>
        <interceptor-ref name="servletConfig"/>
        <interceptor-ref name="i18n"/>
        <interceptor-ref name="prepare"/>
        <interceptor-ref name="chain"/>
        <interceptor-ref name="scopedModelDriven"/>
        <interceptor-ref name="modelDriven"/>
        <interceptor-ref name="xssInterceptor"/>
        <interceptor-ref name="fileUpload">
            <param name="allowedExtensions">
        	.jpg,.png,.JPG,.jpeg,.doc,.docx,.pdf,.xls,.xlsx,.PDF
            </param>
        </interceptor-ref>
        <interceptor-ref name="checkbox"/>
        <interceptor-ref name="datetime"/>
        <interceptor-ref name="multiselect"/>
        <interceptor-ref name="staticParams"/>
        <interceptor-ref name="actionMappingParams"/>
        <interceptor-ref name="params"/>
        <interceptor-ref name="conversionError"/>
        <interceptor-ref name="validation">
           <param name="excludeMethods">input,back,cancel,browse</param>
        </interceptor-ref>
        <interceptor-ref name="workflow">
           <param name="excludeMethods">input,back,cancel,browse</param>
        </interceptor-ref>
        <interceptor-ref name="debugging"/>
    </interceptor-stack>
</interceptors>
<default-interceptor-ref name="sessionInterceptorStack" />