1.jaspersoft studio工具下载地址

下载直通车

2.工具使用方法查看以下链接

工具使用

3.将工具编译后的.jasper文件放到SpringBoot项目的resources/templates下

4.引入需要的jar

<dependency>
        <groupId>net.sf.jasperreports</groupId>
        <artifactId>jasperreports</artifactId>
        <version>6.18.1</version>
        <exclusions>
            <exclusion>
                <groupId>com.lowagie</groupId>
                <artifactId>itext</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-annotations</artifactId>
            </exclusion>
            <exclusion>
                <artifactId>commons-beanutils</artifactId>
                <groupId>commons-beanutils</groupId>
            </exclusion>
            <exclusion>
                <artifactId>commons-collections</artifactId>
                <groupId>commons-collections</groupId>
            </exclusion>
            <exclusion>
                <artifactId>commons-logging</artifactId>
                <groupId>commons-logging</groupId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>com.lowagie</groupId>
        <artifactId>itext</artifactId>
        <version>2.1.7</version>
    </dependency>
    <dependency>
        <groupId>org.codehaus.groovy</groupId>
        <artifactId>groovy-all</artifactId>
        <version>2.4.11</version>
    </dependency>
    <dependency>
        <groupId>net.sf.jasperreports</groupId>
        <artifactId>jasperreports-fonts</artifactId>
        <version>6.18.1</version>
    </dependency>
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>itext-pdfa</artifactId>
        <version>5.5.0</version>
    </dependency>

ps:jasperreports 、jasperreports-fonts这两jar的版本取决于使用的jaspersoft studio工具的版本(一定要一致，否则可能出现类型转换异常)

5.pom文件配置

		<resource>
			<targetPath>${project.build.directory}/classes</targetPath>
			<directory>src/main/resources</directory>
			<filtering>true</filtering>
			<excludes>
				<exclude>**/*.jasper</exclude>
				<exclude>**/*.jrxml</exclude>
			</excludes>
		</resource>
		<resource>
			<targetPath>${project.build.directory}/classes</targetPath>
			<directory>src/main/resources</directory>
			<filtering>false</filtering>
			<includes>
				<include>**/*.jasper</include>
				<include>**/*.jrxml</include>
			</includes>
		</resource>

		<plugin>
			<artifactId>maven-resources-plugin</artifactId>
			<version>2.4</version>
			<configuration>
				<encoding>${project.build.sourceEncoding}</encoding>
				<delimiters>
					<delimiter>$</delimiter>
					<delimiter>@</delimiter>
				</delimiters>
				<useDefaultDelimiters>false</useDefaultDelimiters>
				<outputDirectory>${basedir}/target/classes/</outputDirectory>
				<nonFilteredFileExtensions>
					<!-- 需要过滤掉不需要编码的文件，不对其进行统一编码 -->
					<nonFilteredFileExtension>woff</nonFilteredFileExtension>
					<nonFilteredFileExtension>woff2</nonFilteredFileExtension>
					<nonFilteredFileExtension>eot</nonFilteredFileExtension>
					<nonFilteredFileExtension>ttf</nonFilteredFileExtension>
					<nonFilteredFileExtension>svg</nonFilteredFileExtension>
					<nonFilteredFileExtension>xlsx</nonFilteredFileExtension>
					<nonFilteredFileExtension>xls</nonFilteredFileExtension>
					<nonFilteredFileExtension>docx</nonFilteredFileExtension>
					<nonFilteredFileExtension>doc</nonFilteredFileExtension>
					<nonFilteredFileExtension>pdf</nonFilteredFileExtension>
					<nonFilteredFileExtension>jasper</nonFilteredFileExtension>
				</nonFilteredFileExtensions>
			</configuration>
		</plugin>

ps:配置要有，否则可能会出现io异常

6.服务代码，我这里使用的是map传参的方式

//引入jasper文件
	ClassPathResource resource = new ClassPathResource("templates/collate.jasper");
	try {
		//文件输入流的两种获取方式
//			FileInputStream fis = new FileInputStream(resource.getFile());
		InputStream inputStream = resource.getInputStream();
		Map<String, Object> map = new HashMap<>();
         map.put("userName","zhangsan");
         map.put("pass","123456")
         /**查看底层代码发现JasperFillManager.fillReport(inputStream, map,new JREmptyDataSource())
          *中有调用(JasperReport) JRLoader.loadObject(inputStream)所以在这里我注掉了
          *如果要使用(JasperReport) JRLoader.loadObject(inputStream)该方法
          *fillReport方法的参数改为JasperFillManager.fillReport(jasperReport, map,new JREmptyDataSource())
          */
//			JasperReport jasperReport = (JasperReport) JRLoader.loadObject(inputStream);
		//将数据源传递collate.jasper进行数据拼装
         //fillReport接口就是处理数据和.jasper文件交互的方法
		JasperPrint jasperPrint = JasperFillManager.fillReport(inputStream, map,new JREmptyDataSource());
		//调用打印方法
		JasperPrintManager.printReport(jasperPrint,true);
	} catch (Exception e) {
		e.printStackTrace();
	}

参数解释：
JasperPrint jasperPrint = JasperFillManager.fillReport(inputStream, map,new JREmptyDataSource());
//参数1输入流，即读取的文件
//参数2数据map集合
//参数3数据源，我这里使用的是map传参所有数据源给的空数据源对象，必须要有数据源对象
//也可以使用数据源的方式调用，map给个空的hasmap即可，数据源即jdbc连接

7.项目设置

如果是在linux系统运行可以使用 nohup java -Djava.awt.headless=false -jar xxx.jar >catalina.out 2>&1 &