spring mvc整合ireport终极解结方案，解决HTML图片不显示的问题

</pre><p></p><p>jasper-views.xml</p><pre name="code" class="html"><?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd"> <bean id="reportView" class="com.weixin.yzh.controller.wsTest.CustomReportView"><!-- <property name="url" value="/WEB-INF/jasper/report2.jasper"/> --><property name="reportDataKey" value="jrMainDataSource"/><property name="exporterParameters">  <!-- 渲染时的相关参数 --><map><entry key="net.sf.jasperreports.engine.export.JRHtmlExporterParameter.IMAGES_URI" value="../image?image="/>  <!-- HTML时的白色背景图片(px)路径 --><entry key="net.sf.jasperreports.engine.export.JRHtmlExporterParameter.CHARACTER_ENCODING" value="UTF-8"/></map></property></bean></beans>

自定义JasperReportsMultiFormatView：

package com.weixin.yzh.controller.wsTest;


import Java.util.Map;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.j2ee.servlets.ImageServlet;


import org.springframework.web.servlet.view.jasperreports.JasperReportsMultiFormatView;


public class CustomReportView extends JasperReportsMultiFormatView {
private JasperReport report;


public CustomReportView() {
super();
}

protected JasperPrint fillReport(Map<String, Object> model) throws Exception {
if (model.containsKey("url")) {
setUrl(String.valueOf(model.get("url")));
this.report = loadReport();
}

return super.fillReport(model);
}

protected JasperReport getReport() {
return this.report;
}

// @Override
//    protected void renderReport(JasperPrint populatedReport,
//            Map<String, Object> model, HttpServletResponse response)
//            throws Exception {
//        if (model.containsKey("requestObject")) {
//              HttpServletRequest request = (HttpServletRequest) model.get("requestObject");
//              request.getSession().setAttribute(ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, populatedReport);
//        }
//        super.renderReport(populatedReport, model, response);
//    }
/*@Override
protected void postProcessReport(JasperPrint populatedReport, Map model)
throws Exception {


// HTML reports need the JasperPrint object in the session
if ("html".equalsIgnoreCase((String) model.get("format"))) {
session.setAttribute(
ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE,
populatedReport);
}
}*/
}

servlet里面的配置

<!-- 注册XmlViewResolver，用于iReport & JasperReports报表生成 -->  
<bean id="jasperReportResolver" class="org.springframework.web.servlet.view.XmlViewResolver">  
   <property name="order">  
       <value>0</value>  
   </property>  
   <property name="location">  
       <value>classpath:/src-resources/jasper-views.xml</value>  
   </property>
   
</bean> 

web.xml里面的配置

<!-- JasperReport包中自带的Servlet，用来做为HTML形式显示报表的时候报表的图片，要在这里配置上，图片在jasperReport包中 -->
<servlet>
<servlet-name>JasperReportImageServlet</servlet-name>
<servlet-class>net.sf.jasperreports.j2ee.servlets.ImageServlet</servlet-class>
</servlet>


<servlet-mapping>
<servlet-name>JasperReportImageServlet</servlet-name>
<url-pattern>/image</url-pattern>
</servlet-mapping>

测试代码：

@RequestMapping("/customerReport2")
public String report(Model model) {  
List<TasteModel> tasteModelList = tasteModelService.queryTasteModelAll();


   // 报表数据源  
   JRDataSource jrDataSource = new JRBeanCollectionDataSource(tasteModelList);  
         
   // 动态指定报表模板url  
   model.addAttribute("url", "/WEB-INF/jasper/TasteModelTest.jasper");  
   model.addAttribute("format", "html"); // 报表格式  
   model.addAttribute("jrMainDataSource", jrDataSource);


// <property name="IMAGES_URI" value="/servlets/image?image="/>
      
   return "reportView"; // 对应jasper-views.xml中的bean id  
}