多个润乾报表，导出到一个excel中的不同sheet页中

润乾报表作为报表编辑工具使用起来十分的简单方便，只需要简单的属性设置便可以实现导出、打印等功能（具体参见润乾开发应用文档），令人很郁闷的是润乾的导出只是单表的导出。

最近就有这么一个需求：有很多.raq报表文件，在一个页面中列出所有的文件的名称，通过复选框选中下载，要求导出到一个excel中，分不同的sheet页展示（不知各位是否明白此需求，我的表达能力有限请见谅）。

郁闷了我好一阵子，问同事都没有这么做过！

闲着没事翻看润乾jar包，发现了一些端倪。在润乾安装目录里有润乾API，闲着没事可以翻阅。

API中有ExcelReport类可以帮助我们实现上面的需求。

话不多说看代码：

Java代码

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.  
15. public class ExportReport {
16.  
17.  
18. private String reportPath = "";
19.  
20. private String excelPath="";
21.  
22. private String excelFileName;
23.  
24. private DataSource dataSource;
25.  
26. private String reportDataSource;
27.  
28.  
29. private int dbType = DBTypes.ORACLE;
30.  
31. private boolean needTranContent = true;
32.  
33. private String dbCharset = "GBK";
34.  
35. private String clientCharset = "GBK";
36.  
37. private boolean needTranSentence = false;
38.  
39. public void saveExcel(Map param, Map macro, String[] reportName, String[] sheetName)
40. throws Exception{
41. int flag = 0;
42. ExcelReport erp=null;
43. JdbcTemplate JT = new JdbcTemplate();
44. JT.setDataSource(this.dataSource);
45. Connection con = JT.getDataSource().getConnection();
46. DataSourceConfig dsoc = new DataSourceConfig(this.dbType, this.needTranContent,
47. this.dbCharset, this.clientCharset, this.needTranSentence);
48. //判断excelFileName是不是为“”或null，以及是不是excel类型
49. if(!"".equals(this.null2blank(this.excelFileName)) && this.isExcelFile(this.excelFileName)){
50. FileOutputStream fos = new FileOutputStream((this.null2blank(this.excelPath)+this.excelFileName).trim());
51. try {
52. erp = new ExcelReport();
53. } catch (Throwable e) {
54. e.printStackTrace();
55. }
56. if(reportName != null && reportName.length>0){
57. //初始化数组
58. IReport[] rd = new IReport[reportName.length];
59. Context[] context = new Context[reportName.length];
60. Engine engine[] = new Engine[reportName.length];
61. IReport iReport[] = new IReport[reportName.length];
62. //如果sheetName为空或者长度为零，那么设置默认选项
63. if (sheetName == null || sheetName.length<=0) {
64. sheetName = new String[reportName.length];
65. for (int i = 0; i < reportName.length; i++) {
66. sheetName[i] = "report_"+String.valueOf(i);
67. }
68. }
69. for (int i = 0; i < reportName.length; i++) {
70. if(!"".equals(this.null2blank(reportName[i]))){
71. //读取报表模板，把*.raq文件读入内存，并实例化ReportDefine
72. rd[i] = ReportUtils.read((this.null2blank(this.reportPath)+reportName[i]).trim());
73. //新建上下文对象，在上下文对象中设置数据源
74. context[i] = new Context();
75. context[i].setDefDataSourceName(this.reportDataSource);
76. context[i].setConnection(this.reportDataSource,con);
77. context[i].setDataSourceConfig(this.reportDataSource, dsoc);
78. //设置参数和宏
79. if(param != null && param.size()>0){
80. context[i].setParamMap(param);
81. }
82. if(macro != null && macro.size()>0){
83. Object[] array = macro.keySet().toArray();
84. for (int j = 0; j < array.length; j++) {
85. context[i].setMacroValue(array[j].toString(), macro.get(array[j]).toString());
86. }
87. }
88. //运算报表，并在页面上输出报表
89. engine[i] = new Engine(rd[i],context[i]);
90. iReport[i] = engine[i].calc();
91. //构建每个sheet页
92. erp.addPage(iReport[i],sheetName[i]);
93. flag ++;
94. }
95. }
96. }else {
97. throw new Exception("reportName为“”或null");
98. }
99. //导出Excel
100. if (flag != 0) {
101. erp.out(fos);
102. }
103. fos.flush();
104. fos.close();
105. }else {
106. throw new Exception("excelFileName为“”或null或不是excel类型");
107. }
108. }
109.  
110. private String null2blank(String variable) {
111. if (variable == null)
112. variable = "";
113. return variable;
114. }
115.  
116. private boolean isExcelFile(String excelName){
117. boolean is = false;
118. if(excelName.endsWith(".xls") || excelName.endsWith(".xlsx")){
119. is = true;
120. }
121. return is;
122. }
123.  
124. public String getReportPath() {
125. return reportPath;
126. }
127. public void setReportPath(String reportPath) {
128. this.reportPath = reportPath;
129. }
130. public String getExcelPath() {
131. return excelPath;
132. }
133. public void setExcelPath(String excelPath) {
134. this.excelPath = excelPath;
135. }
136. public String getExcelFileName() {
137. return excelFileName;
138. }
139. public void setExcelFileName(String excelFileName) {
140. this.excelFileName = excelFileName;
141. }
142. public DataSource getDataSource() {
143. return dataSource;
144. }
145. public void setDataSource(DataSource dataSource) {
146. this.dataSource = dataSource;
147. }
148. public String getReportDataSource() {
149. return reportDataSource;
150. }
151. public void setReportDataSource(String reportDataSource) {
152. this.reportDataSource = reportDataSource;
153. }
154. public int getDbType() {
155. return dbType;
156. }
157. public void setDbType(int dbType) {
158. this.dbType = dbType;
159. }
160. public boolean isNeedTranContent() {
161. return needTranContent;
162. }
163. public void setNeedTranContent(boolean needTranContent) {
164. this.needTranContent = needTranContent;
165. }
166. public String getDbCharset() {
167. return dbCharset;
168. }
169. public void setDbCharset(String dbCharset) {
170. this.dbCharset = dbCharset;
171. }
172. public String getClientCharset() {
173. return clientCharset;
174. }
175. public void setClientCharset(String clientCharset) {
176. this.clientCharset = clientCharset;
177. }
178. public boolean isNeedTranSentence() {
179. return needTranSentence;
180. }
181. public void setNeedTranSentence(boolean needTranSentence) {
182. this.needTranSentence = needTranSentence;
183. }
184. }

以上是关键代码，完整代码示例请参见附加。代码排版有些乱，请童鞋们见谅，如果上面的代码不想看，就下载附件吧，附加注释很详细