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1
19
20 package org.efs.openreports.actions;
21
22 import java.awt.image.BufferedImage  ;
23 import java.io.IOException ;
24
25 import javax.servlet.ServletOutputStream ;
26 import javax.servlet.http.HttpServletResponse ;
27
28 import com.opensymphony.webwork.ServletActionContext;
29 import com.opensymphony.xwork.ActionContext;
30 import com.opensymphony.xwork.ActionSupport;
31
32 import org.apache.log4j.Logger;
33 import org.efs.openreports.ORStatics;
34 import org.efs.openreports.objects.Report;
35 import org.jfree.chart.encoders.SunPNGEncoderAdapter;
36
37 import net.sf.jasperreports.engine.JasperPrint;
38 import net.sf.jasperreports.engine.JasperPrintManager;
39
40 public class ReportViewerAction extends ActionSupport
41 {
42 protected static Logger log = Logger.getLogger(ReportViewerAction.class);
43
44 private int pageIndex = 1;
45 private int pageCount = 0;
46 private float zoom = 1.0f;
47
48 private String submitType;
49 private Report report;
50
51 public String execute()
52 {
53 JasperPrint jasperPrint = (JasperPrint) ActionContext.getContext().getSession().get(
54 ORStatics.JASPERPRINT);
55
56 report = (Report) ActionContext.getContext().getSession().get(ORStatics.REPORT);
57
58 if (jasperPrint != null && jasperPrint.getPages() != null)
59 {
60 pageCount = jasperPrint.getPages().size();
61 }
62
63 if (!"image".equals(submitType)) return SUCCESS;
64
65 byte[] imageData = null;
66
67 if (jasperPrint != null)
68 {
69 try
70 {
71 BufferedImage image = (BufferedImage ) JasperPrintManager.printPageToImage(jasperPrint, pageIndex -1, zoom);
72 imageData = new SunPNGEncoderAdapter().encode(image);
73 }
74 catch(Exception e)
75 {
76 addActionError(e.getMessage());
77 log.error(e.toString());
78 }
79 }
80
81 if (imageData != null)
82 {
83
84 HttpServletResponse response = ServletActionContext.getResponse();
85
86 try
87 {
88 response.setContentLength(imageData.length);
89 ServletOutputStream ouputStream = response.getOutputStream();
90 ouputStream.write(imageData, 0, imageData.length);
91 ouputStream.flush();
92 ouputStream.close();
93 }
94 catch (IOException ioe)
95 {
96 log.warn(ioe.toString());
97 }
98 }
99
100 return NONE;
101 }
102
103 public int getPageIndex()
104 {
105 return pageIndex;
106 }
107
108 public void setPageIndex(int pageIndex)
109 {
110 this.pageIndex = pageIndex;
111 }
112
113 public float getZoom()
114 {
115 return zoom;
116 }
117
118 public void setZoom(float zoom)
119 {
120 this.zoom = zoom;
121 }
122
123 public int getPageCount()
124 {
125 return pageCount;
126 }
127
128 public String getSubmitType()
129 {
130 return submitType;
131 }
132
133 public void setSubmitType(String submitType)
134 {
135 this.submitType = submitType;
136 }
137
138 public Report getReport()
139 {
140 return report;
141 }
142
143 public void setReport(Report report)
144 {
145 this.report = report;
146 }
147 }
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