JasperReport学习笔记3-在浏览器生成PDF文件-优快云博客

在浏览器生成PDF文件，主要用了JasperRunManager对象面的runReportToPdfStream方法，在WEB里一般都先用iReport生成jasper文件，这样就去解析JRXML文件了

例子如下

    Java代码  
   
  
 import java.io.IOException;  
 import java.io.InputStream;  
 import java.io.PrintWriter;  
 import java.io.StringWriter;  
 import java.util.HashMap;  
   
 import javax.servlet.ServletException;  
 import javax.servlet.ServletOutputStream;  
 import javax.servlet.http.HttpServlet;  
 import javax.servlet.http.HttpServletRequest;  
 import javax.servlet.http.HttpServletResponse;  
   
 import net.sf.jasperreports.engine.JREmptyDataSource;  
 import net.sf.jasperreports.engine.JRException;  
 import net.sf.jasperreports.engine.JasperRunManager;  
   
 public class JasperReportServlet extends HttpServlet {  
   
     private static final long serialVersionUID = 1L;  
   
     public void doGet(HttpServletRequest request, HttpServletResponse response)  
             throws ServletException, IOException {  
         //获得输出流  
         ServletOutputStream outputStream = response.getOutputStream();  
         //获得输入流  
         InputStream inputStream = getServletConfig().getServletContext().getResourceAsStream("JasperFile//JasperReportFile.jasper");  
         try {  
               
             //生成网页的PDF文件  
             JasperRunManager.runReportToPdfStream(inputStream, outputStream, new HashMap(), new JREmptyDataSource());  
             //设置PDF格式  
             response.setContentType("application/pdf");  
             outputStream.flush();  
             outputStream.close();             
         } catch (JRException e) {  
             StringWriter stringWriter = new StringWriter();  
             PrintWriter printWriter = new PrintWriter(stringWriter);  
             e.printStackTrace(printWriter);  
             response.setContentType("text/plain");  
             response.getOutputStream().print(stringWriter.toString());  
         }  
     }  
   
       
     public void doPost(HttpServletRequest request, HttpServletResponse response)  
             throws ServletException, IOException {  
         this.doPost(request, response);  
     }  
 }  
 

  
 
 

  转载自：http://langhua9527.iteye.com/blog/399941
 