JAVA ireport实例

来源：互联网发布：数据漏斗模型编辑：程序博客网时间：2024/06/18 06:53

protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet NewServlet</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet NewServlet at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
            */
             // 报表编译之后生成的.jasper 文件的存放位置

File reportFile = new File(

request.getRealPath("web/report1.jasper"));

// 传递报表中用到的参数值

//Map<String, String> parameters = new HashMap<String, String>();

// "name"是报表中定义过的一个参数名称,其类型为String 型

// parameters.put("name", value);

byte[] bytes = JasperRunManager.runReportToPdf(

reportFile.getPath(), null, DBConnection.getConnection());

//生成PDF文件

response.setContentType("application/pdf");

ServletOutputStream ouputStream = response.getOutputStream();

ouputStream.write(bytes, 0, bytes.length);