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  • java-byte[]图片在页面展示

        public void img(HttpServletRequest req, HttpServletResponse res) {
            //res.setHeader("Content-Type", "image/jpeg");
            //String reportType = req.getParameter("reportType");
            String reportIdstr = req.getParameter("reportIdstr");
            String pageIdstr = req.getParameter("pageIdstr");
            String dataKey = req.getParameter("dataKey");
            FbReportData data = null;
            try {
                data = this.fbReportDataService.findByReportIdAndPageIdAndDataKey(reportIdstr, pageIdstr, dataKey);
            } catch (Exception e) {
                e.printStackTrace();
            }
            if(data!=null){
                InputStream in = new ByteArrayInputStream(data.getData_value());
                try {
                    OutputStream out = res.getOutputStream();
                    byte[] b = new byte[in.available()];
                    in.read(b);
                    out.write(b);
                    out.flush();
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
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  • 原文地址:https://www.cnblogs.com/hwaggLee/p/5139017.html
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