Spring3 Web MVC 集成JasperReport生成PDF例子
一：环境搭建与配置
1. 安装JDK6以上版本
2. 安装STS, 下载地址如下：http://www.springsource.org/downloads/sts-ggts
3. 下载并安装Tomcat7
4. 创建一个Dynamic Web Project项目，然后选择创建好的项目右键选择
Configuration->convert to Manve Project.
5. 添加web.xml文件，在WEB-INF目录下新建reports, pages, classes三个子目录
6. 新建index.jsp文件在webapp目录下。
7. 最终的项目目录结构如下：
二：Spring配置详解
在web.xml中配置Spring的DispatchServlet与Context Listener，配置如下：
在express-servlet.xml中配置spring view解析器
三：Jasper Report配置详解
在jasper-views.xml添加如下配置
四：Report内容与数据源
两个报表，演示了子报表的用法，同时还演示了如何想子报表传递数据源，以及参
数传递在报表中显示图像等技巧。需要特别说明的是如果要在报表中使用图像路径
图像必须位于WEB-INF/classes下面，因为JasperReport解析是按找类路径寻找。关
于报表的详细内容建议查看下载以后的源文件，此处不再细说。
五：Controller与注解
Spring3 Controller支持注解(annotation)方式，使用非常方便，生成PDF报表的
Controller代码如下：
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;
}
}
Mock数据工厂代码如下：
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;
}
}
启动运行在浏览器中访问地址为：http://localhost:8080/express/hello.html
六：Deploy与运行
全部代码完成以后，从IDE中运行Maven的clean与install命令，得到war包
将war拷贝到tomcat的webapps下面即可启动tomcat然后从浏览器访问。
点击[Get PDF Report]会自动在新窗口中打开生成的PDF报表文件。
程序运行打开主页面结果如下：
获取PDF报表在浏览器中打开以后效果如下：
七：常见问题
1. 必须在applicationContext.xml中导入jasper-views.xml资源否则报表不会被编译
为jasper文件
2. Web.xml的servlet名必须与spring的xxx-servlet.xml中的xxx一致
3. Jasper-views.xml中声明的子报表路径参数与数据参数必须与报表文件jrxml中保
持一致
4. 报表中field变量名必须与Java Class中的field变量名一一对应。
八：项目文件打包下载，解压缩作为Maven项目导入以后运行clean与 install命令。
下载地址：http://download.csdn.net/detail/jia20003/4963552
转载请注明-2013-01-05