was升级JDK1.6升级到1.8ServletOutputSt

The type new ServletOutputStream(){} must implement the inherited abstract method ServletOutputStream.setWriteListener(WriteListener)

直接在jsp的报错方法实现抽象方法即可

final ServletOutputStream stream = new ServletOutputStream()
{
    @override
    public boolean isReady(){
        return false;
    }
    @override
    public void setWriteListener(WriteListener writeListener){
        
    }
.......
}