3.JasperReports学习笔记3-在浏览器生成PDF文件

3.JasperReports学习笔记3-在浏览器生成PDF文件

转自：https://i.cnblogs.com/posts?categoryid=921197

一、新建web工程，导入jasperreports所需的jar包，配置web.xml

<servlet>
2 <servlet-name>PdfServlet</servlet-name>
3 <servlet-class>net.sf.jasperreports.j2ee.servlets.PdfServlet</servlet-class>
4 </servlet>
5 <servlet-mapping>
6 <servlet-name>PdfServlet</servlet-name>
7 <url-pattern>/servlets/pdf</url-pattern>
8 </servlet-mapping>

二、编译jrxml文件，生成jasper文件

/*
 2 * JasperReports - Free Java Reporting Library.
 3 * Copyright (C) 2001 - 2013 Jaspersoft Corporation. All rights reserved.
 4 * http://www.jaspersoft.com
 5 *
 6 * Unless you have purchased a commercial license agreement from Jaspersoft,
 7 * the following license terms apply:
 8 *
 9 * This program is part of JasperReports.
10 *
11 * JasperReports is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * JasperReports is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
23 */
24package servlets;
25
26import java.io.IOException;
27import java.io.PrintWriter;
28
29import javax.servlet.ServletContext;
30import javax.servlet.ServletException;
31import javax.servlet.http.HttpServlet;
32import javax.servlet.http.HttpServletRequest;
33import javax.servlet.http.HttpServletResponse;
34
35import net.sf.jasperreports.engine.JRException;
36import net.sf.jasperreports.engine.JasperCompileManager;
37
38
39/**
40 * @author Teodor Danciu (teodord@users.sourceforge.net)
41 * @version $Id: CompileServlet.java 5876 2013-01-07 19:05:05Z teodord $
42 */
43public class CompileServlet extends HttpServlet
44{
45
46
47 /**
48 *
49 */
50 public void service(
51 HttpServletRequest request,
52 HttpServletResponse response
53 ) throws IOException, ServletException
54 {
55 ServletContext context = this.getServletConfig().getServletContext();
56
57 response.setContentType("text/html");
58 PrintWriter out = response.getWriter();
59
60 try
61 {
62 JasperCompileManager.compileReportToFile(context.getRealPath("/reports/WebappReport.jrxml"));
63 }
64 catch (JRException e)
65 {
66 out.println("<html>");
67 out.println("<head>");
68 out.println("<title>JasperReports - Web Application Sample</title>");
69 out.println("<link rel="stylesheet" type="text/css" href="../stylesheet.css" title="Style">");
70 out.println("</head>");
71
72 out.println("<body bgcolor="white">");
73
74 out.println("JasperReports encountered this error :");
75 out.println("<pre>");
76
77 e.printStackTrace(out);
78
79 out.println("</pre>");
80
81 out.println("</body>");
82 out.println("</html>");
83
84 return;
85 }
86
87 out.println("<html>");
88 out.println("<head>");
89 out.println("<title>JasperReports - Web Application Sample</title>");
90 out.println("<link rel="stylesheet" type="text/css" href="../stylesheet.css" title="Style">");
91 out.println("</head>");
92
93 out.println("<body bgcolor="white">");
94
95 out.println("The JRXML report design was successfully compiled.");
96
97 out.println("</body>");
98 out.println("</html>");
99 }
100
101
102}
103

三、填充数据

 1/*
 2 * JasperReports - Free Java Reporting Library.
 3 * Copyright (C) 2001 - 2013 Jaspersoft Corporation. All rights reserved.
 4 * http://www.jaspersoft.com
 5 *
 6 * Unless you have purchased a commercial license agreement from Jaspersoft,
 7 * the following license terms apply:
 8 *
 9 * This program is part of JasperReports.
10 *
11 * JasperReports is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * JasperReports is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
23 */
24package servlets;
25
26import java.io.File;
27import java.io.IOException;
28import java.io.PrintWriter;
29import java.util.HashMap;
30import java.util.Map;
31
32import javax.servlet.ServletContext;
33import javax.servlet.ServletException;
34import javax.servlet.http.HttpServlet;
35import javax.servlet.http.HttpServletRequest;
36import javax.servlet.http.HttpServletResponse;
37
38import net.sf.jasperreports.engine.JRException;
39import net.sf.jasperreports.engine.JRRuntimeException;
40import net.sf.jasperreports.engine.JasperFillManager;
41import net.sf.jasperreports.engine.JasperPrint;
42import net.sf.jasperreports.j2ee.servlets.BaseHttpServlet;
43import datasource.WebappDataSource;
44
45
46/**
47 * @author Teodor Danciu (teodord@users.sourceforge.net)
48 * @version $Id: FillServlet.java 5876 2013-01-07 19:05:05Z teodord $
49 */
50public class FillServlet extends HttpServlet
51{
52
53
54 /**
55 *
56 */
57 public void service(
58 HttpServletRequest request,
59 HttpServletResponse response
60 ) throws IOException, ServletException
61 {
62 ServletContext context = this.getServletConfig().getServletContext();
63
64 response.setContentType("text/html");
65 PrintWriter out = response.getWriter();
66
67 try
68 {
69 String reportFileName = context.getRealPath("/reports/WebappReport.jasper");
70 File reportFile = new File(reportFileName);
71 if (!reportFile.exists())
72 throw new JRRuntimeException("File WebappReport.jasper not found. The report design must be compiled first.");
73
74 Map parameters = new HashMap();
75 parameters.put("ReportTitle", "Address Report");
76 parameters.put("BaseDir", reportFile.getParentFile());
77
78 JasperPrint jasperPrint =
79 JasperFillManager.fillReport(
80 reportFileName,
81 parameters,
82 new WebappDataSource()
83 );
84
85 request.getSession().setAttribute(BaseHttpServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, jasperPrint);
86 }
87 catch (JRException e)
88 {
89 out.println("<html>");
90 out.println("<head>");
91 out.println("<title>JasperReports - Web Application Sample</title>");
92 out.println("<link rel="stylesheet" type="text/css" href="../stylesheet.css" title="Style">");
93 out.println("</head>");
94
95 out.println("<body bgcolor="white">");
96
97 out.println("JasperReports encountered this error :");
98 out.println("<pre>");
99
100 e.printStackTrace(out);
101
102 out.println("</pre>");
103
104 out.println("</body>");
105 out.println("</html>");
106 }
107
108 out.println("<html>");
109 out.println("<head>");
110 out.println("<title>JasperReports - Web Application Sample</title>");
111 out.println("<link rel="stylesheet" type="text/css" href="../stylesheet.css" title="Style">");
112 out.println("</head>");
113
114 out.println("<body bgcolor="white">");
115
116 out.println("The compiled report design was successfully filled with data.");
117
118 out.println("</body>");
119 out.println("</html>");
120 }
121
122
123}
124

二、编译jrxml文件，生成jasper文件

 1/*
 2 * JasperReports - Free Java Reporting Library.
 3 * Copyright (C) 2001 - 2013 Jaspersoft Corporation. All rights reserved.
 4 * http://www.jaspersoft.com
 5 *
 6 * Unless you have purchased a commercial license agreement from Jaspersoft,
 7 * the following license terms apply:
 8 *
 9 * This program is part of JasperReports.
10 *
11 * JasperReports is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * JasperReports is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
23 */
24package servlets;
25
26import java.io.IOException;
27import java.io.PrintWriter;
28
29import javax.servlet.ServletContext;
30import javax.servlet.ServletException;
31import javax.servlet.http.HttpServlet;
32import javax.servlet.http.HttpServletRequest;
33import javax.servlet.http.HttpServletResponse;
34
35import net.sf.jasperreports.engine.JRException;
36import net.sf.jasperreports.engine.JasperCompileManager;
37
38
39/**
40 * @author Teodor Danciu (teodord@users.sourceforge.net)
41 * @version $Id: CompileServlet.java 5876 2013-01-07 19:05:05Z teodord $
42 */
43public class CompileServlet extends HttpServlet
44{
45
46
47 /**
48 *
49 */
50 public void service(
51 HttpServletRequest request,
52 HttpServletResponse response
53 ) throws IOException, ServletException
54 {
55 ServletContext context = this.getServletConfig().getServletContext();
56
57 response.setContentType("text/html");
58 PrintWriter out = response.getWriter();
59
60 try
61 {
62 JasperCompileManager.compileReportToFile(context.getRealPath("/reports/WebappReport.jrxml"));
63 }
64 catch (JRException e)
65 {
66 out.println("<html>");
67 out.println("<head>");
68 out.println("<title>JasperReports - Web Application Sample</title>");
69 out.println("<link rel="stylesheet" type="text/css" href="../stylesheet.css" title="Style">");
70 out.println("</head>");
71
72 out.println("<body bgcolor="white">");
73
74 out.println("JasperReports encountered this error :");
75 out.println("<pre>");
76
77 e.printStackTrace(out);
78
79 out.println("</pre>");
80
81 out.println("</body>");
82 out.println("</html>");
83
84 return;
85 }
86
87 out.println("<html>");
88 out.println("<head>");
89 out.println("<title>JasperReports - Web Application Sample</title>");
90 out.println("<link rel="stylesheet" type="text/css" href="../stylesheet.css" title="Style">");
91 out.println("</head>");
92
93 out.println("<body bgcolor="white">");
94
95 out.println("The JRXML report design was successfully compiled.");
96
97 out.println("</body>");
98 out.println("</html>");
99 }
100
101
102}
103
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原文地址：https://www.cnblogs.com/sharpest/p/6148566.html

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