从前端权限校验页面提取原始PDF文件的方法原理与实践测试网址：https://law.chemicalsafety.org.cn/compliance/guild/customer/CountryTechCustomer.jsp?moduleId=2&libraryId=3382332752445153&type=countryTech 源码：view-source:https://law.chemicalsafety.org.cn/compliance/guild/customer/CountryTechCustomer.jsp?moduleId=2&l