Spring Boot集成JasperReports生成PDF文档

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。

Spring Boot集成JasperReports生成PDF文档_第1张图片

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

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();
        }

    }
}

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);

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

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
        
    



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

转载于:https://my.oschina.net/yongchongwu/blog/1593202

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