潤乾報表作為報表編輯工具使用起來十分的簡單方便，只需要簡單的屬性設定便可以實現匯出、列印等功能（具體參見潤乾開發應用文件），令人很鬱悶的是潤乾的匯出只是單表的匯出。

最近就有這麼一個需求：有很多.raq報表檔案，在一個頁面中列出所有的檔案的名稱，通過複選框選中下載，要求匯出到一個excel中，分不同的sheet頁展示（不知各位是否明白此需求，我的表達能力有限請見諒）。

鬱悶了我好一陣子，問同事都沒有這麼做過！

閒著沒事翻看潤乾jar包，發現了一些端倪。在潤乾安裝目錄裡有潤乾API，閒著沒事可以翻閱。

API中有ExcelReport類可以幫助我們實現上面的需求。

話不多說看程式碼：

Java程式碼

1. package cn.com.victorysoft.wellinfo.util;
2. import java.io.FileOutputStream;
3. import java.sql.Connection;
4. import java.util.Map;
5. import javax.sql.DataSource;
6. import org.springframework.jdbc.core.JdbcTemplate;
7. import com.runqian.base4.util.DBTypes;
8. import com.runqian.report4.usermodel.Context;
9. import com.runqian.report4.usermodel.DataSourceConfig;
10. import com.runqian.report4.usermodel.Engine;
11. import com.runqian.report4.usermodel.IReport;
12. import com.runqian.report4.util.ReportUtils;
13. import com.runqian.report4.view.excel.ExcelReport;
14. public class ExportReport {
15. private String reportPath = "";
16. private String excelPath="";
17. private String excelFileName;
18. private DataSource dataSource;
19. private String reportDataSource;
20. private int dbType = DBTypes.ORACLE;
21. private boolean needTranContent = true;
22. private String dbCharset = "GBK";
23. private String clientCharset = "GBK";
24. private boolean needTranSentence = false;
25. public void saveExcel(Map param, Map macro, String[] reportName, String[] sheetName)
26. throws Exception{
27. int flag = 0;
28. ExcelReport erp=null;
29. JdbcTemplate JT = new JdbcTemplate();
30. JT.setDataSource(this.dataSource);
31. Connection con = JT.getDataSource().getConnection();
32. DataSourceConfig dsoc = new DataSourceConfig(this.dbType, this.needTranContent,
33. this.dbCharset, this.clientCharset, this.needTranSentence);
34. //判斷excelFileName是不是為“”或null，以及是不是excel型別
35. if(!"".equals(this.null2blank(this.excelFileName)) && this.isExcelFile(this.excelFileName)){
36. FileOutputStream fos = new FileOutputStream((this.null2blank(this.excelPath)+this.excelFileName).trim());
37. try {
38. erp = new ExcelReport();
39. } catch (Throwable e) {
40. e.printStackTrace();
41. }
42. if(reportName != null && reportName.length>0){
43. //初始化陣列
44. IReport[] rd = new IReport[reportName.length];
45. Context[] context = new Context[reportName.length];
46. Engine engine[] = new Engine[reportName.length];
47. IReport iReport[] = new IReport[reportName.length];
48. //如果sheetName為空或者長度為零，那麼設定預設選項
49. if (sheetName == null || sheetName.length<=0) {
50. sheetName = new String[reportName.length];
51. for (int i = 0; i < reportName.length; i++) {
52. sheetName[i] = "report_"+String.valueOf(i);
53. }
54. }
55. for (int i = 0; i < reportName.length; i++) {
56. if(!"".equals(this.null2blank(reportName[i]))){
57. //讀取報表模板，把*.raq檔案讀入記憶體，並例項化ReportDefine
58. rd[i] = ReportUtils.read((this.null2blank(this.reportPath)+reportName[i]).trim());
59. //新建上下文物件，在上下文物件中設定資料來源
60. context[i] = new Context();
61. context[i].setDefDataSourceName(this.reportDataSource);
62. context[i].setConnection(this.reportDataSource,con);
63. context[i].setDataSourceConfig(this.reportDataSource, dsoc);
64. //設定引數和巨集
65. if(param != null && param.size()>0){
66. context[i].setParamMap(param);
67. }
68. if(macro != null && macro.size()>0){
69. Object[] array = macro.keySet().toArray();
70. for (int j = 0; j < array.length; j++) {
71. context[i].setMacroValue(array[j].toString(), macro.get(array[j]).toString());
72. }
73. }
74. //運算報表，並在頁面上輸出報表
75. engine[i] = new Engine(rd[i],context[i]);
76. iReport[i] = engine[i].calc();
77. //構建每個sheet頁
78. erp.addPage(iReport[i],sheetName[i]);
79. flag ++;
80. }
81. }
82. }else {
83. throw new Exception("reportName為“”或null");
84. }
85. //匯出Excel
86. if (flag != 0) {
87. erp.out(fos);
88. }
89. fos.flush();
90. fos.close();
91. }else {
92. throw new Exception("excelFileName為“”或null或不是excel型別");
93. }
94. }
95. private String null2blank(String variable) {
96. if (variable == null)
97. variable = "";
98. return variable;
99. }
100. private boolean isExcelFile(String excelName){
101. boolean is = false;
102. if(excelName.endsWith(".xls") || excelName.endsWith(".xlsx")){
103. is = true;
104. }
105. return is;
106. }
107. public String getReportPath() {
108. return reportPath;
109. }
110. public void setReportPath(String reportPath) {
111. this.reportPath = reportPath;
112. }
113. public String getExcelPath() {
114. return excelPath;
115. }
116. public void setExcelPath(String excelPath) {
117. this.excelPath = excelPath;
118. }
119. public String getExcelFileName() {
120. return excelFileName;
121. }
122. public void setExcelFileName(String excelFileName) {
123. this.excelFileName = excelFileName;
124. }
125. public DataSource getDataSource() {
126. return dataSource;
127. }
128. public void setDataSource(DataSource dataSource) {
129. this.dataSource = dataSource;
130. }
131. public String getReportDataSource() {
132. return reportDataSource;
133. }
134. public void setReportDataSource(String reportDataSource) {
135. this.reportDataSource = reportDataSource;
136. }
137. public int getDbType() {
138. return dbType;
139. }
140. public void setDbType(int dbType) {
141. this.dbType = dbType;
142. }
143. public boolean isNeedTranContent() {
144. return needTranContent;
145. }
146. public void setNeedTranContent(boolean needTranContent) {
147. this.needTranContent = needTranContent;
148. }
149. public String getDbCharset() {
150. return dbCharset;
151. }
152. public void setDbCharset(String dbCharset) {
153. this.dbCharset = dbCharset;
154. }
155. public String getClientCharset() {
156. return clientCharset;
157. }
158. public void setClientCharset(String clientCharset) {
159. this.clientCharset = clientCharset;
160. }
161. public boolean isNeedTranSentence() {
162. return needTranSentence;
163. }
164. public void setNeedTranSentence(boolean needTranSentence) {
165. this.needTranSentence = needTranSentence;
166. }
167. }

以上是關鍵程式碼，完整程式碼示例請參見附加。程式碼排版有些亂，請童鞋們見諒，如果上面的程式碼不想看，就下載附件吧，附加註釋很詳細