he method setAttribute（String,object）in the type HttpSession is not appl
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这个错误的意思是你在绑定的时候，绑定的值不是一个Object，产生这个问题的原因主要是JDK版本的问题。有的JDK版本，是支持直接从int转换为Integer，编译可以通过。你的JDK应该不支持这个。解决的办法有两个：
方案一：忽略掉JDK版本，比如你原来是session.setAttribute("count",count);,count是int类型， 那你可以采用Integer countObj = Integer.valueOf(count);这样，在绑 定：session.setAttribute("countObj",countObj);
方案二：项目文件夹，右键，properties,Java Compiler 修改Compiler compliance lever 为1.6
方案一：忽略掉JDK版本，比如你原来是session.setAttribute("count",count);,count是int类型， 那你可以采用Integer countObj = Integer.valueOf(count);这样，在绑 定：session.setAttribute("countObj",countObj);
方案二：项目文件夹，右键，properties,Java Compiler 修改Compiler compliance lever 为1.6
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