使用 Jaspersoft Studio 设计报表样式

用你熟悉的环境设计一套最简单的模板，名称定义为： Reports.jrxml

下载源文件：report.jrxml

语法比较特殊，需要努力学习

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="report1" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="84feeac3-d1f7-4503-84bf-fc3fa153df55">
  <queryString>
      <![CDATA[]]>
  </queryString>
  <field name="id" class="java.lang.Long"/>
  <field name="price" class="java.math.BigDecimal"/>
  <field name="quantity" class="java.lang.Integer"/>
  <field name="categoryName" class="java.lang.String"/>
  <field name="name" class="java.lang.String"/>
  <background>
      <band splitType="Stretch"/>
  </background>
  <title>
      <band height="36" splitType="Stretch"/>
  </title>
  <pageHeader>
      <band height="49" splitType="Stretch">
          <staticText>
              <reportElement x="170" y="10" width="230" height="30" uuid="04d35299-5eb0-4a34-b340-3ca5cf8290fc"/>
              <textElement>
                  <font fontName="宋体" size="20"/>
              </textElement>
              <text><![CDATA[Product List | 产品列表]]></text>
          </staticText>
      </band>
  </pageHeader>
  <columnHeader>
      <band height="37" splitType="Stretch">
          <staticText>
              <reportElement x="0" y="10" width="70" height="20" uuid="bcaf85c0-57ff-4a34-af27-cbf1330125ae"/>
              <textElement>
                  <font fontName="宋体" isBold="true"/>
              </textElement>
              <text><![CDATA[ID]]></text>
          </staticText>
          <staticText>
              <reportElement x="90" y="10" width="100" height="20" uuid="faf9b9ee-7cf2-4ea5-80b8-d371c3c753b9"/>
              <textElement>
                  <font fontName="宋体" isBold="true"/>
              </textElement>
              <text><![CDATA[名称]]></text>
          </staticText>
          <staticText>
              <reportElement x="210" y="10" width="70" height="20" uuid="93727672-9f69-4856-aa26-33837e8dc417"/>
              <textElement>
                  <font fontName="宋体" isBold="true"/>
              </textElement>
              <text><![CDATA[价格]]></text>
          </staticText>
          <staticText>
              <reportElement x="314" y="10" width="70" height="20" uuid="09b47abe-09b2-479a-bb76-9770e361a23c"/>
              <textElement>
                  <font fontName="宋体" isBold="true"/>
              </textElement>
              <text><![CDATA[数量]]></text>
          </staticText>
          <staticText>
              <reportElement x="410" y="10" width="100" height="20" uuid="c258f47b-da6a-418d-a5e0-892388ec65c5"/>
              <textElement>
                  <font fontName="宋体" isBold="true"/>
              </textElement>
              <text><![CDATA[类别]]></text>
          </staticText>
      </band>
  </columnHeader>
  <detail>
      <band height="39" splitType="Stretch">
          <textField>
              <reportElement x="0" y="4" width="70" height="16" uuid="99fa4c16-cfe2-4482-828e-4439abb9e8f0"/>
              <textFieldExpression><![CDATA[$F{id}]]></textFieldExpression>
          </textField>
          <textField>
              <reportElement x="210" y="4" width="70" height="16" uuid="ba6e9cfa-6d4c-470b-8bc4-eb2e3411c21e"/>
              <textFieldExpression><![CDATA[$F{price}]]></textFieldExpression>
          </textField>
          <textField>
              <reportElement x="310" y="4" width="70" height="16" uuid="447253d3-d268-4873-b0b7-9c174c6a7c9f"/>
              <textFieldExpression><![CDATA[$F{quantity}]]></textFieldExpression>
          </textField>
          <textField>
              <reportElement x="410" y="4" width="100" height="16" uuid="8992d0ad-1f5e-4210-b50b-1e29dc66f119"/>
              <textFieldExpression><![CDATA[$F{categoryName}]]></textFieldExpression>
          </textField>
          <line>
              <reportElement x="-3" y="27" width="521" height="1" uuid="9b493a65-a499-4199-90bb-b3fedbe45f85"/>
          </line>
          <textField>
              <reportElement x="90" y="4" width="100" height="16" uuid="fcdd8979-dc44-46e3-be56-11e5f33b8e0c">
                  <property name="com.jaspersoft.studio.spreadsheet.connectionID" value="73fad7b3-74b5-4436-bd46-d2b9c3c113fd"/>
              </reportElement>
              <textFieldExpression><![CDATA[$F{name}]]></textFieldExpression>
          </textField>
      </band>
  </detail>
  <columnFooter>
      <band height="45" splitType="Stretch"/>
  </columnFooter>
  <pageFooter>
      <band height="54" splitType="Stretch"/>
  </pageFooter>
  <summary>
      <band height="42" splitType="Stretch"/>
  </summary>
</jasperReport>

新建 Spring Boot 项目

新建 Spring Boot 项目，不多说
需包含的内容比较特殊，pom.xml，jasperreports 是依赖包，jasperreports-fonts 是字体支持包

      <dependency>
          <groupId>net.sf.jasperreports</groupId>
          <artifactId>jasperreports</artifactId>
          <version>6.15.0</version>
      </dependency>
      <dependency>
          <groupId>net.sf.jasperreports</groupId>
          <artifactId>jasperreports-fonts</artifactId>
          <version>6.15.0</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-support</artifactId>
          <version>2.0.8</version>
      </dependency>

新建各种类
controller, domain, repository, service, 其他，大概目录结构如下

创建 Postgresql 数据表

CREATE TABLE public.product
(
  id bigint NOT NULL,
  name character varying(255) COLLATE pg_catalog."default",
  price numeric,
  quantity integer,
  category_name character varying(255) COLLATE pg_catalog."default",
  CONSTRAINT product_pkey PRIMARY KEY (id)
)

集成 JasperReports 到 Spring Boot 项目

中文支持文章：Spring Boot 集成 JasperReports，并支持中文PDF

Service 服务层处理要求

@RequestMapping(value = "/report", method = RequestMethod.GET)
  public void report(HttpServletResponse response, @RequestParam(name = "type", defaultValue = "pdf") String type) throws Exception {

      JRBeanCollectionDataSource dataSource = new JRBeanCollectionDataSource(productService.report());
      InputStream inputStream = this.getClass().getResourceAsStream("/report_templates/report.jrxml");
      JasperReport jasperReport = JasperCompileManager.compileReport(inputStream);
      JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, null, dataSource);

      switch (type) {
      case "html":
          response.setContentType("text/html;charset=utf-8");
          HtmlExporter exporter = new HtmlExporter(DefaultJasperReportsContext.getInstance());
          exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
          exporter.setExporterOutput(new SimpleHtmlExporterOutput(response.getWriter()));
          exporter.exportReport();
          break;

      case "pdf":

      default:
          JRPdfExporter exporterPdf = new JRPdfExporter();
          exporterPdf.setExporterInput(new SimpleExporterInput(jasperPrint));
          OutputStream outputStream = response.getOutputStream();
          exporterPdf.setExporterOutput(new SimpleOutputStreamExporterOutput(outputStream));
          exporterPdf.exportReport();
          break;
      }

  }

可以是 HTML 版本
也可以是 PDF 版本

源码下载： https://github.com/jiekechoo/YiqisoftReport

Spring Boot 集成 Jpa Repository 生成 Jaspersoft Reports，保存/导出 PDF 文件

使用 Jaspersoft Studio 设计报表样式

新建 Spring Boot 项目

集成 JasperReports 到 Spring Boot 项目

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