Spring Boot集成JasperReports生成PDF文档-白红宇

由于工作需要，要实现后端根据模板动态填充数据生成PDF文档，通过技术选型，使用Ireport5.6来设计模板，结合JasperReports5.6工具库来调用渲染生成PDF文档。本人文采欠缺，写作能力差，下面粗略的介绍其使用步骤，若有不对的地方，望大家莫喷，谢谢！

一、使用Ireport designer 5.6设计模板

ireport的使用由于时间关系不便多说，设计好之后，将其进行编译生成jasper文件，然后将其拷贝放置于项目某个目录下，以供访问获取该文件。

二、在Spring Boot项目中引入依赖包


    
        
     
      net.sf.jasperreports
         
     
      jasperreports
         
     
      6.0.0
     
    
        
     
      net.sf.jasperreports
         
     
      jasperreports-fonts
         
     
      6.0.0
     
    
        
     
      com.itextpdf
         
     
      itextpdf
         
     
      5.5.0
     
    
        
     
      com.itextpdf
         
     
      itext-pdfa
         
     
      5.5.0
     
    
        
     
      com.itextpdf
         
     
      itext-asian
         
     
      5.2.0
     
    
        
     
      org.codehaus.groovy
         
     
      groovy-all
         
     
      2.4.11
     
    复制代码

三、自定义spring mvc通用导出PDF视图类PdfReportView（继承自AbstractView ）

import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.io.UnsupportedEncodingException;import java.net.URLEncoder;import java.util.HashMap;import java.util.Map;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import net.sf.jasperreports.engine.JRDataSource;import net.sf.jasperreports.engine.JREmptyDataSource;import net.sf.jasperreports.engine.JasperExportManager;import net.sf.jasperreports.engine.JasperFillManager;import net.sf.jasperreports.engine.JasperPrint;import org.springframework.web.servlet.view.AbstractView;public class PdfReportView extends AbstractView {    private static final String CONTENT_TYPE = "application/pdf";    private String templatePath;    private String exportFileName;    public PdfReportView(String templatePath, String exportFileName) {        this.templatePath = templatePath;        if (exportFileName != null) {            try {                exportFileName = URLEncoder.encode(exportFileName, "UTF-8");            } catch (UnsupportedEncodingException e) {                e.printStackTrace();            }        }        this.exportFileName = exportFileName;        setContentType(CONTENT_TYPE);    }    protected Map
    
      getParamsMap(Map
     
       map) throws Exception {        Map
      
        params = new HashMap<>();        for (String key : map.keySet()) {            Object val = map.get(key);            if (val instanceof JRDataSource) {                continue;            } else {                params.put(key, val);            }        }        return params;    }    protected JRDataSource getDataSource(Map
       
         map) throws Exception {        for (String key : map.keySet()) {            Object val = map.get(key);            if (val instanceof JRDataSource) {                return (JRDataSource) map.get(key);            }        }        return new JREmptyDataSource();    }    @Override    protected void renderMergedOutputModel(Map
        
          map,        HttpServletRequest request, HttpServletResponse response)        throws Exception {        response.setCharacterEncoding("utf-8");        response.setContentType(getContentType());        //response.setContentType("application/octet-stream");        response.setHeader("content-disposition", "attachment;filename=" + exportFileName + ".pdf");        try (InputStream inputStream = Thread.currentThread().getContextClassLoader()            .getResourceAsStream(templatePath)) {            try (OutputStream ouputStream = response.getOutputStream()) {                JasperPrint jasperPrint = JasperFillManager                    .fillReport(inputStream, getParamsMap(map), getDataSource(map));                JasperExportManager.exportReportToPdfStream(jasperPrint, ouputStream);            } catch (IOException e) {                e.printStackTrace();            }        } catch (IOException e) {            e.printStackTrace();        }    }}复制代码

四、spring mvc调用案例

Map
    
      map = new HashMap<>();List
     
      
       > dataList = ....map.put("users", new JRMapCollectionDataSource(dataList));map.put("title", "报表名称");return new ModelAndView(new PdfReportView("templates/report/resume.jasper", "professors"),map);复制代码

五、解决linux下宋体渲染问题

1、在src/main/resources路径下新建jasperreports_extension.properties文件，内容如下：

net.sf.jasperreports.awt.ignore.missing.font=true net.sf.jasperreports.extension.registry.factory.simple.font.families=net.sf.jasperreports.engine.fonts.SimpleFontExtensionsRegistryFactory net.sf.jasperreports.extension.simple.font.families.dejavu=fonts/fonts.xml 复制代码

2、在src/main/resources路径下新建fonts目录，并新建fonts.xml文件，内容如下：


    
        
             
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSans.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSans-Bold.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSans-Oblique.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSans-BoldOblique.ttf
              
      
       Identity-H
              
      
       true
              
                  
       
        'DejaVu Sans', Arial, Helvetica, sans-serif
                   
       
        'DejaVu Sans', Arial, Helvetica, sans-serif
               
              
          
         
             
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSerif.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSerif-Bold.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSerif-Italic.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSerif-BoldItalic.ttf
              
      
       Identity-H
              
      
       true
              
                  
       
        'DejaVu Serif', 'Times New Roman', Times, serif
                   
       
        'DejaVu Serif', 'Times New Roman', Times, serif
               
          
         
             
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSansMono.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSansMono-Bold.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSansMono-Oblique.ttf
              
      
       net/sf/jasperreports/fonts/dejavu/DejaVuSansMono-BoldOblique.ttf
              
      
       Identity-H
              
      
       true
              
                  
       
        'DejaVu Sans Mono', 'Courier New', Courier, monospace
                   
       
        'DejaVu Sans Mono', 'Courier New', Courier, monospace
               
          
         
             
                  
       
        'DejaVu Sans', Arial, Helvetica, sans-serif
                   
       
        'DejaVu Sans', Arial, Helvetica, sans-serif
               
          
         
             
                  
       
        'DejaVu Serif', 'Times New Roman', Times, serif
                   
       
        'DejaVu Serif', 'Times New Roman', Times, serif
               
          
         
             
                  
       
        'DejaVu Sans Mono', 'Courier New', Courier, monospace
                   
       
        'DejaVu Sans Mono', 'Courier New', Courier, monospace
               
          
         
             
      
       fonts/simsun.ttf
              
      
       fonts/simsun.ttf
              
      
       fonts/simsun.ttf
              
      
       fonts/simsun.ttf
              
      
       Identity-H
              
      
       true
              
                  
       
        '宋体', Arial, Helvetica, sans-serif
                   
       
        '宋体', Arial, Helvetica, sans-serif
               
          
     
    复制代码

3、在src/main/resources/fonts目录放入宋体字体文件 simsun.ttf