java流式下载文件会在文件中自动加上页面代码？怎么解决

这个是下载文件的内容，后面有页面代码。怎么去掉呢？

123,Tue May 19 00:00:00 CST 2015,34,0,自动关机,个人喜好,55,200,34,0,55,200,
123,Tue May 19 00:00:00 CST 2015,34,230,没有保修,售后服务,268,353,234,123,268,353,
123,Tue May 19 00:00:00 CST 2015,34,230,没有保修,售后服务,268,353,34,230,268,353,
123,Tue May 19 00:00:00 CST 2015,123,0,配合,屏幕尺寸,354,0,231,0,354,0,
123,Tue May 19 00:00:00 CST 2015,123,0,配合,屏幕尺寸,354,0,123,0,354,0,

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