I. Introdução

1 ambiente de desenvolvimento

Continue a desenvolver o projeto: SpringBoot usa Jsp para visualizar o Crystal Report (1): Configure o projeto e visualize o relatório

https://blog.csdn.net/cs373616511/article/details/109953182

2 Estrutura do projeto

2. Visualize o relatório de cristal

1 Adicionar projeto de código aberto Crystal Reports - classe de ferramenta CRJavaHelper

Baixe a classe de ferramenta CRJavaHelper para usar aqui, mas o documento java do site oficial não foi encontrado

https://github.com/souvikduttachoudhury/CrystalReportsSpringBoot.git

src / com / businessobjects / samples / CRJavaHelper.java

Use a classe de ferramenta CRJavaHelper para operar o Crystal Report e copiá-lo para o projeto

CRJavaHelper .java

2 adicionar relatório de cristal

test2.rpt

O método de criação de test2.rpt é Baidu ou consulte o blog https://blog.csdn.net/cs373616511/article/details/109269674

3 criar arquivo jsp

cr2.jsp

<%@page contentType=" text/html " %>
<%@page pageEncoding="UTF-8" %>
<%@page import=" com.crystaldecisions.sdk.occa.report.* " %>  <%--  webreporting.jar --%>
<%@page import=" com.crystaldecisions.report.web.viewer.* " %>
<%@ page import="com.asyf.demo.utils.CRJavaHelper" %>
<%@ page import="com.crystaldecisions.sdk.occa.report.application.ReportClientDocument" %>
<%
    // 水晶报表的位置
    final String REPORT_NAME = "/WEB-INF/test2.rpt";
%>
<%
    try {
        //打开报表
        ReportClientDocument reportClientDoc = new ReportClientDocument();
        reportClientDoc.open(REPORT_NAME, 0);

        //更换数据源
        String username = "scott";
        String password = "root";
        String driverName = "oracle.jdbc.OracleDriver";
        String connectionURL = "jdbc:oracle:thin:@localhost:1521:orcl";
        String jndiName = "JDBC(JNDI)";
        CRJavaHelper.changeDataSource(reportClientDoc, username, password, connectionURL, driverName, jndiName);

        //给参数赋值
        //第二个参数代表子报表，设置主报表参数，设置为空串
        CRJavaHelper.addDiscreteParameterValue(reportClientDoc, "", "deptNoPar", 10);
        //C:\\Users\\Administrator\\Desktop\\001.jpg"
        CRJavaHelper.addDiscreteParameterValue(reportClientDoc, "", "imagePath", "");

        // 把报表源放进session,传递到报表显示页面
        session.setAttribute("reportSource", reportClientDoc.getReportSource());
        // 建立一个viewer对象实例,并设置
        CrystalReportViewer viewer = new CrystalReportViewer();
        viewer.setOwnPage(true);
        viewer.setOwnForm(true);
        viewer.setPrintMode(CrPrintMode.ACTIVEX);
        //
        // 从session中取报表源
        Object reportSource = session.getAttribute("reportSource");
        viewer.setReportSource(reportSource);
        viewer.setReportSource(reportClientDoc.getReportSource());      //显示水晶报表
        viewer.processHttpRequest(request, response, this.getServletConfig().getServletContext(), null);
    } catch (Exception ex) {
        out.println(ex);
    }
%>

4 Configure o servlet do Crystal Reports

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

    //配置serverlet，否则无法加载图片以及一些其他功能
    @Bean
    public ServletRegistrationBean getServletRegistrationBean() {
        ServletRegistrationBean bean = new ServletRegistrationBean(new CrystalReportViewerServlet());
        bean.addUrlMappings("/CrystalReportViewerHandler");
        return bean;
    }

}

5 adicionar controlador

@GetMapping("/cr2")
    public String cr2(Model model) {
        return "cr2";
    }

Três, teste

Efeito de demonstração

SpringBoot usa Jsp para visualizar o Crystal Report (2): Visualize o Crystal Report conectado ao banco de dados Oracle