Spring3 Web MVC 集成Jasper Report生成PDF例子
Spring3 Web MVC 集成JasperReport生成PDF例子
一：環境搭建與配置
1. 安裝JDK6以上版本
2. 安裝STS, 下載地址如下：http://www.springsource.org/downloads/sts-ggts
3. 下載并安裝Tomcat7
4. 創建一個Dynamic Web Project項目，然后選擇創建好的項目右鍵選擇
Configuration->convert to Manve Project.
5. 添加web.xml文件，在WEB-INF目錄下新建reports, pages, classes三個子目錄
6. 新建index.jsp文件在webapp目錄下。
7. 最終的項目目錄結構如下：
二：Spring配置詳解
在web.xml中配置Spring的DispatchServlet與Context Listener，配置如下：
在express-servlet.xml中配置spring view解析器
三：Jasper Report配置詳解
在jasper-views.xml添加如下配置
四：Report內容與數據源
兩個報表，演示了子報表的用法，同時還演示了如何想子報表傳遞數據源，以及參
數傳遞在報表中顯示圖像等技巧。需要特別說明的是如果要在報表中使用圖像路徑
圖像必須位于WEB-INF/classes下面，因為JasperReport解析是按找類路徑尋找。關
于報表的詳細內容建議查看下載以后的源文件，此處不再細說。
五：Controller與注解
Spring3 Controller支持注解(annotation)方式，使用非常方便，生成PDF報表的
Controller代碼如下：
package com.gloomyfish.express.controllers;import java.util.HashMap; import java.util.Map;
import net.sf.jasperreports.engine.JRDataSource; import net.sf.jasperreports.engine.JREmptyDataSource;
import org.apache.log4j.Logger; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.servlet.ModelAndView;
import com.gloomyfish.report.dao.MockDataFactory;
@Controller public class JasperReportController {
protected static Logger logger = Logger.getLogger("controller"); /** * Retrieves the PDF report file * * @return */ @RequestMapping(value = "/getpdfReport", method = RequestMethod.GET) public ModelAndView doSalesReportPDF(ModelAndView modelAndView) { logger.debug("Received request to download PDF report"); // Retrieve our data from a mock data provider MockDataFactory dataprovider = new MockDataFactory(); // Assign the datasource to an instance of JRDataSource // JRDataSource is the datasource that Jasper understands // This is basically a wrapper to Java's collection classes JRDataSource categoryData = dataprovider.getCategoriesData(); // parameterMap is the Model of our application Map<string,object> parameterMap = new HashMap<string,object>(); // must have the empty data source!!! JREmptyDataSource emptyData = new JREmptyDataSource(); parameterMap.put("datasource", emptyData); parameterMap.put("JasperfishSubReportDatasource", categoryData); parameterMap.put("JasperfishSummaryInfo", dataprovider.getSummaryInfo()); // pdfReport is the View of our application // This is declared inside the /WEB-INF/jasper-views.xml modelAndView = new ModelAndView("pdfReport", parameterMap); // Return the View and the Model combined return modelAndView; }}</string,object></string,object></pre> Mock數據工廠代碼如下：
package com.gloomyfish.report.dao;import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List;
import net.sf.jasperreports.engine.JRDataSource; import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
public class MockDataFactory {
public MockDataFactory() { System.out.println("create mock up data"); } public GloomyFishSummaryInfoBean getSummaryInfo() { GloomyFishSummaryInfoBean summaryBean = new GloomyFishSummaryInfoBean(); summaryBean.setBlogURL("http://blog.csdn.net/jia20003"); summaryBean.setMajorDomain("J2SE, J2EE, WEB developer"); summaryBean.setName("jia20003"); summaryBean.setNickName("gloomyfish"); summaryBean.setRegDate("2003-03-02"); summaryBean.setWorkYears(8); return summaryBean; } public JRDataSource getCategoriesData() { List<articlescategory> listData = new ArrayList<articlescategory>(); SimpleDateFormat sdf = new SimpleDateFormat("dd MMM yyyy, hh:mm:ss"); Date createDte = new Date(); ArticlesCategory category1 = new ArticlesCategory(); ArticlesCategory category2 = new ArticlesCategory(); ArticlesCategory category3 = new ArticlesCategory(); ArticlesCategory category4 = new ArticlesCategory(); ArticlesCategory category5 = new ArticlesCategory(); ArticlesCategory category6 = new ArticlesCategory();// ArticlesCategory category7 = new ArticlesCategory(); // ArticlesCategory category8 = new ArticlesCategory(); // ArticlesCategory category9 = new ArticlesCategory(); // ArticlesCategory categoryTen = new ArticlesCategory(); category1.setCategoryName("Android Development"); category1.setCount(6); category1.setCreateDate(sdf.format(createDte)); category2.setCategoryName("Swing Desktop Development"); category2.setCount(21); category2.setCreateDate(sdf.format(createDte)); category3.setCategoryName("JAVA 2D Image Process"); category3.setCount(56); category3.setCreateDate(sdf.format(createDte)); category4.setCategoryName("J2EE"); category4.setCount(8); category4.setCreateDate(sdf.format(createDte)); category5.setCategoryName("HTML5"); category5.setCount(4); category5.setCreateDate(sdf.format(createDte)); category6.setCategoryName("Network Protocols Research"); category6.setCount(4); category6.setCreateDate(sdf.format(createDte)); category6.setCategoryName("ExtJS Learning"); category6.setCount(2); category6.setCreateDate(sdf.format(createDte)); listData.add(category1); listData.add(category2); listData.add(category3); listData.add(category4); listData.add(category5); listData.add(category6); JRBeanCollectionDataSource data = new JRBeanCollectionDataSource(listData); return data; }
}</articlescategory></articlescategory></pre> 啟動運行在瀏覽器中訪問地址為：http://localhost:8080/express/hello.html
六：Deploy與運行
全部代碼完成以后，從IDE中運行Maven的clean與install命令，得到war包
將war拷貝到tomcat的webapps下面即可啟動tomcat然后從瀏覽器訪問。
點擊[Get PDF Report]會自動在新窗口中打開生成的PDF報表文件。
程序運行打開主頁面結果如下：
獲取PDF報表在瀏覽器中打開以后效果如下：
七：常見問題
1. 必須在applicationContext.xml中導入jasper-views.xml資源否則報表不會被編譯
為jasper文件
2. Web.xml的servlet名必須與spring的xxx-servlet.xml中的xxx一致
3. Jasper-views.xml中聲明的子報表路徑參數與數據參數必須與報表文件jrxml中保
持一致
4. 報表中field變量名必須與Java Class中的field變量名一一對應。
八：項目文件打包下載，解壓縮作為Maven項目導入以后運行clean與 install命令。
來自：http://blog.csdn.net/jia20003/article/details/8471169
