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:

 

package cn.com.victorysoft.wellinfo.util;

import java.io.FileOutputStream;
import java.sql.Connection;
import java.util.Map;

import javax.sql.DataSource;

import org.springframework.jdbc.core.JdbcTemplate;
import com.runqian.base4.util.DBTypes;
import com.runqian.report4.usermodel.Context;
import com.runqian.report4.usermodel.DataSourceConfig;
import com.runqian.report4.usermodel.Engine;
import com.runqian.report4.usermodel.IReport;
import com.runqian.report4.util.ReportUtils;
import com.runqian.report4.view.excel.ExcelReport;
 
/**
 * @Description 多个润乾报表导出到一个excel中的不同sheet页中
 * @ClassName ExportReport2
 * @author Gao Jie-quan
 * @Created 2010 Oct 12, 2010 3:23:35 PM
 */
public class ExportReport {

	/**
	 * @Description 一些必须设置的属性
	 * @created 2010 Oct 12, 2010 4:32:39 PM
	 */
	
	/**
	 * @Description 润乾.raq文件存储路径,
	 * 				此属性可以不设置,但是方法传值reportName时必须包含物理路径,
	 * @field String reportPath 
	 * @created 2010 Oct 12, 2010 5:14:21 PM
	 */   
	private String reportPath = "";
	
	/**
	 * @Description 导出的excel存储路径
	 * 	           此属性可以不设置,但是方法传值excelFileName的时候必须包含物理路径,
	 * @field String excelPath 
	 * @created 2010 Oct 12, 2010 5:14:34 PM
	 */
	private String excelPath="";
	
	/**
	 * @Description excel文件名
	 * @field String excelFileName 
	 * @created 2010 Oct 12, 2010 5:14:47 PM
	 */
	private String excelFileName;
	
	/**
	 * @Description 数据源
	 * @field DataSource dataSource 
	 * @created 2010 Oct 12, 2010 5:14:57 PM
	 */
	private DataSource dataSource;
	
	/**
	 * @Description 润乾中使用的默认数据源名称
	 * @field String reportDataSource 
	 * @created 2010 Oct 12, 2010 5:15:08 PM
	 */
	private String reportDataSource;
	
	/**
	 * @Description 构造数据源配置的相关属性,包含默认初始值
	 * @created 2010 Oct 12, 2010 4:32:39 PM
	 */
	
	/**
	 * @Description 数据源类型,默认为Oracle  参见com.runqian.base4.util.DBTypes
	 * @field int dbType
	 * @created 2010 Oct 12, 2010 5:05:12 PM
	 */
	private int dbType = DBTypes.ORACLE;
	
	/**
	 * @Description 是否需要转换检索内容的编码
	 *@field boolean needTranContent
	 * @created 2010 Oct 12, 2010 5:09:48 PM
	 */
	private boolean needTranContent = true;
	
	/**
	 * @Description 数据源使用的字符集名,默认为GBK
	 * @field String dbCharset 
	 * @created 2010 Oct 12, 2010 5:11:18 PM
	 */
	private String dbCharset = "GBK";
	
	/**
	 * @Description 客户端使用的字符集名,默认为GBK
	 * @field String clientCharset 
	 * @created 2010 Oct 12, 2010 5:11:40 PM
	 */
	private String clientCharset = "GBK";
	
	/**
	 * @Description 是否需要转换检索语句的编码
	 * @field boolean needConvert 
	 * @created 2010 Oct 12, 2010 5:12:50 PM
	 */
	private boolean needTranSentence = false;
	
	
	/**
	 * @Description 保存excel
	 * @param param 报表参数
	 * @param macro 报表宏
	 * @param reportName .raq名称(要包含.raq后缀),
	 * 			如果reportPath属性没有设置,那么reportName必须包含完整的物理路径
	 * @param sheetName 保存到excel中sheet页的名称,
	 * @throws Exception
	 * @ReturnType void
	 * @author Gao Jie-quan
	 * @Created 2010 Oct 12, 20103:23:46 PM
	 */
	public void saveExcel(Map param, Map macro, String[] reportName, String[] sheetName)
						throws Exception{
        int flag = 0;
		ExcelReport erp=null;
		JdbcTemplate JT = new JdbcTemplate();
		JT.setDataSource(this.dataSource);
		
		Connection con = JT.getDataSource().getConnection();
		DataSourceConfig dsoc = new DataSourceConfig(this.dbType, this.needTranContent, 
												this.dbCharset, this.clientCharset, this.needTranSentence);
		//判断excelFileName是不是为“”或null,以及是不是excel类型
		if(!"".equals(this.null2blank(this.excelFileName)) && this.isExcelFile(this.excelFileName)){
			FileOutputStream fos = new FileOutputStream((this.null2blank(this.excelPath)+this.excelFileName).trim());
			try {
				erp = new ExcelReport();
			} catch (Throwable e) {
				e.printStackTrace();
			}
			
			if(reportName != null && reportName.length>0){
				//初始化数组
				IReport[] rd = new IReport[reportName.length];
				Context[] context = new Context[reportName.length];
				Engine engine[] = new Engine[reportName.length];
				IReport iReport[] = new IReport[reportName.length];
				
				//如果sheetName为空或者长度为零,那么设置默认选项
				if (sheetName == null || sheetName.length<=0) {
					sheetName = new String[reportName.length];
					for (int i = 0; i < reportName.length; i++) {
						sheetName[i] = "report_"+String.valueOf(i);
					}
				}
				
				for (int i = 0; i < reportName.length; i++) {
					if(!"".equals(this.null2blank(reportName[i]))){
						//读取报表模板,把*.raq文件读入内存,并实例化ReportDefine
						rd[i] = ReportUtils.read((this.null2blank(this.reportPath)+reportName[i]).trim());
						//新建上下文对象,在上下文对象中设置数据源
						context[i] = new Context();
						context[i].setDefDataSourceName(this.reportDataSource);
						context[i].setConnection(this.reportDataSource,con);
						context[i].setDataSourceConfig(this.reportDataSource, dsoc);
						//设置参数和宏
						if(param != null && param.size()>0){
							context[i].setParamMap(param);
						}
						if(macro != null && macro.size()>0){
							Object[] array = macro.keySet().toArray();
							for (int j = 0; j < array.length; j++) {
								context[i].setMacroValue(array[j].toString(), macro.get(array[j]).toString());
							}
						}
						//运算报表,并在页面上输出报表
						engine[i] = new Engine(rd[i],context[i]);
						iReport[i] = engine[i].calc();
						//构建每个sheet页
						erp.addPage(iReport[i],sheetName[i]);
						
						flag ++;
					}
				}
			}else {
				throw new Exception("reportName为“”或null");
			}
			//导出Excel
			if (flag != 0) {
				erp.out(fos);
			}
			
			fos.flush();
			fos.close();
		}else {
			throw new Exception("excelFileName为“”或null或不是excel类型");
		}
	}
	
	/**
	 * 判断字符串是否为null,如果为null,则转换为“”,否则返回源字符串
	 * 
	 * @param variable
	 * @return
	 */
	private String null2blank(String variable) {
		if (variable == null)
			variable = "";
		return variable;
	}

	/**
	 * @Description 判断是不是excel文件类型
	 * @param excelName
	 * @return
	 * @ReturnType boolean
	 * @author Gao Jie-quan
	 * @Created 2010 Oct 13, 20108:58:24 AM
	 */
	private boolean isExcelFile(String excelName){
		boolean is = false;
		if(excelName.endsWith(".xls") || excelName.endsWith(".xlsx")){
			is = true;
		}
		return is;
	}
	
	/**
	 * @Description 相关属性的Get/Set方法
	 * @ReturnType String
	 * @author Gao Jie-quan
	 * @Created 2010 Oct 12, 20104:39:39 PM
	 */
	public String getReportPath() {
		return reportPath;
	}


	public void setReportPath(String reportPath) {
		this.reportPath = reportPath;
	}


	public String getExcelPath() {
		return excelPath;
	}


	public void setExcelPath(String excelPath) {
		this.excelPath = excelPath;
	}


	public String getExcelFileName() {
		return excelFileName;
	}


	public void setExcelFileName(String excelFileName) {
		this.excelFileName = excelFileName;
	}


	public DataSource getDataSource() {
		return dataSource;
	}


	public void setDataSource(DataSource dataSource) {
		this.dataSource = dataSource;
	}


	public String getReportDataSource() {
		return reportDataSource;
	}


	public void setReportDataSource(String reportDataSource) {
		this.reportDataSource = reportDataSource;
	}


	public int getDbType() {
		return dbType;
	}


	public void setDbType(int dbType) {
		this.dbType = dbType;
	}


	public boolean isNeedTranContent() {
		return needTranContent;
	}


	public void setNeedTranContent(boolean needTranContent) {
		this.needTranContent = needTranContent;
	}


	public String getDbCharset() {
		return dbCharset;
	}


	public void setDbCharset(String dbCharset) {
		this.dbCharset = dbCharset;
	}


	public String getClientCharset() {
		return clientCharset;
	}


	public void setClientCharset(String clientCharset) {
		this.clientCharset = clientCharset;
	}


	public boolean isNeedTranSentence() {
		return needTranSentence;
	}


	public void setNeedTranSentence(boolean needTranSentence) {
		this.needTranSentence = needTranSentence;
	}
	
}

 

      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

 

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