ireport5.6+jasperreport6.3开发（五）--以javabean为基准的报表开发(action关联)

这里的是定方法主要参照sturts2-jasperreport-plugin的完成方法（其实就是抄的）

PDF的样子是这样的两页的pdf

然后action的配置是这样的（不要在意格式）

@ParentPackage("HulftPackage")
@Namespace("/")
@Action(value = "testreport",
        results = {
                @Result(name = "success", type = "jasper", params={
                        "location","/WEB-INF/report/report5.jasper",
                        "format", "PDF",
                        "dataSource","mySource",
                        "reportKey","myfirstreport",
                        "exportParameters","param",
                })
        }
    )
public class TestReportAction extends ActionSupport {

     private Connection conn = null;

        @Override

        public String execute() throws Exception {

            conn = getConnection();

            mySource = new ArrayList<ReportData>();
            ReportData data = new ReportData();
            data.setId("001");
            data.setName("陈");
            data.setClassName("一班");

            List<ReportChild> clist = new ArrayList<ReportChild>();

            ReportChild child = new ReportChild();
            child.setCourseName("合格");
            child.setDegree(33);
            clist.add(child);
            child = new ReportChild();
            child.setCourseName("不合格");
            child.setDegree(67);
            clist.add(child);

            data.setChild(clist);

            mySource.add(data);

            data = new ReportData();
            data.setId("002");
            data.setName("拉拉");
            data.setClassName("二班");

            clist = new ArrayList<ReportChild>();
            child = new ReportChild();
            child.setCourseName("合格");
            child.setDegree(11);
            clist.add(child);
            child = new ReportChild();
            child.setCourseName("不合格");
            child.setDegree(89);
            clist.add(child);

            data.setChild(clist);

            mySource.add(data);

            return SUCCESS;

        }

        public Map param;

        public Map getParam()
        {
            HashMap a = new HashMap();
            a.put("testmyp", "sadfdsafdsaf");
            return a;
        }

        private List<ReportData> mySource;

        public List<ReportData> getMySource()
        {
            return mySource;
        }

        public Connection getConn() {

            return conn;

        }

        private static Connection getConnection()throws     

        ClassNotFoundException,SQLException{

    String driver="oracle.jdbc.driver.OracleDriver";

    String url="jdbc:oracle:thin:@172.16.173.106:1521:TESTSTRUTS";

    String user="test";

    String password="test";

    Class.forName(driver);

    Connection conn=DriverManager

        .getConnection(url,user,password);

    return conn;

 }
}

@Result(name = "success", type = "jasper", params={
                        "location","/WEB-INF/report/report5.jasper",
                        "format", "PDF",
                        "dataSource","mySource",
                        "reportKey","myfirstreport",
                        "exportParameters","param",

主要代码段是这个result type 是jasper

location 是编译后的jasper文件。入手途径1ireport编译后自动获得，2自己写一个compile获得(sturts2-jasperreport-plugin程序里有)

format 是输出格式 PDF HTML DOC EXCEL

dataSource 是数据源 也就是一个返回值是list的get属性

reportKey 是用来做HTML图片时做sessionkey用的

exportParameters 是报表report的param内容 也就是一个返回值是Map的get属性

然后是STRUTS.xml的配置 定义了jasper类型

    <package name="HulftPackage" extends="struts-default">
        <result-types>
            <result-type name="jasper" class="com.hulftchina.result.JasperReportsResult"/>
        </result-types>
    </package>

JasperReportsResult类就是struts plug抄过来的就是调用的地方重写了一下

因为jasper升级以后调用方式改变了所以这里重新写了一下，包括 数据库连接 自定义javabean和param的输入方式

@Override
    protected void doExecute(String finalLocation, ActionInvocation invocation) throws Exception {

        initializeProperties(invocation);

        if (logger.isDebugEnabled()) {
            logger.debug("Begin execute jasper report.");
        }

        Map parameters= null;

        HttpServletRequest request = (HttpServletRequest) invocation.getInvocationContext().get(ServletActionContext.HTTP_REQUEST);
        HttpServletResponse response = (HttpServletResponse) invocation.getInvocationContext().get(ServletActionContext.HTTP_RESPONSE);

        // 设置http头
        // 本地缓存1分钟
        response.setHeader("CACHE-CONTROL", "PRIVATE");
        response.setHeader("Cache-Control", "maxage=60");
        response.setHeader("Pragma", "public");
        // 完全接受后显示
        response.setHeader("Accept-Ranges", "none");

        // 文字设定
        response.setCharacterEncoding("UTF-8");

        // action内设定的连接取得
        ValueStack stack = invocation.getStack();
        Connection conn = (Connection) stack.findValue(connection);

        if (exportParameters != null) {
            parameters = (Map) stack.findValue(exportParameters);
            if (parameters != null) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Found export parameters; adding to exporter parameters...");
                }
            }
        }

        //取得服务器绝对路径
        ServletContext servletContext = (ServletContext) invocation.getInvocationContext().get(ServletActionContext.SERVLET_CONTEXT);
        String systemId = servletContext.getRealPath(finalLocation);

        JasperPrint jasperPrint;

        try {
            JasperReport jasperReport =
                    (JasperReport) JRLoader.loadObjectFromFile(systemId);

            ValueStackDataSource stackDataSource = null;

            // 数据库连接存在的时候
            if (conn != null) {
                jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, conn);
            } else if (dataSource != null) {
                stackDataSource = new ValueStackDataSource(stack, dataSource, wrapField);
                jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, stackDataSource);
            } else {
                jasperPrint = JasperFillManager.fillReport(jasperReport, parameters);
            }
        } catch (JRException e) {
            logger.error("Error building report for uri " + systemId, e);
            throw new ServletException(e.getMessage(), e);
        }

        try {

            JRAbstractExporter exporter = null;

            ExporterConfiguration configuration = null;

            if (format.equals(FORMAT_PDF)) {
                response.setContentType("application/pdf");
                exporter = new JRPdfExporter();
                configuration = new SimplePdfExporterConfiguration();
            } else if (format.equals(FORMAT_HTML)) {
                String sessionKey = null;
                response.addHeader("Content-Type", "text/html");
                exporter = new HtmlExporter();
                configuration = new SimpleHtmlExporterConfiguration();

                sessionKey = ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE;

                if (!StringUtils.isEmpty(reportKey)) {
                    sessionKey = ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE + reportKey;
                }
                request.getSession().setAttribute(sessionKey, jasperPrint);

                SimpleHtmlExporterOutput output = new SimpleHtmlExporterOutput(response.getOutputStream());
                // img图片取得serverlet设定
                output.setImageHandler(
                        new WebHtmlResourceHandler("reportimage?image={0}" +
                                (StringUtils.isEmpty(reportKey) ? "" : "&" + ImageServlet.JASPER_PRINT_REQUEST_PARAMETER + "=" + sessionKey)));
                exporter.setExporterOutput(output);
            } else if (format.equals(FORMAT_DOC)) {
                response.addHeader("Content-Type", "application/msword");
                exporter = new JRDocxExporter();
                configuration = new SimpleDocxExporterConfiguration();
            } else if (format.equals(FORMAT_XLS)) {
                response.setContentType("application/vnd.ms-excel");
                exporter = new JRXlsExporter();
                configuration = new SimpleXlsExporterConfiguration();
            } else {
                throw new ServletException("Unknown report format: " + format);
            }

            // 输入编译后的jasper的打印类
            exporter.setExporterInput(new SimpleExporterInput(jasperPrint));

            if (!format.equals(FORMAT_HTML)) {
                exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(response.getOutputStream()));
            }
            exporter.setConfiguration(configuration);

            exporter.exportReport();

        } catch (JRException e) {
            String message = "Error producing " + format + " report for uri " + systemId;
            logger.error(message, e);
            throw new ServletException(e.getMessage(), e);
        } catch (Exception e) {
            String message = "Error producing " + format + " report for uri " + systemId;
            logger.error(message, e);
            throw new ServletException(e.getMessage(), e);
        }
    }

如果输出为html的话还需要在web.xml中加入 img取得的servlet这个是和上边代码中的("reportimage?image={0}"相呼应的

    <!-- 报表html版的图片取得 -->
      <servlet>
        <servlet-name>ImageServlet</servlet-name>
        <servlet-class>net.sf.jasperreports.j2ee.servlets.ImageServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>ImageServlet</servlet-name>
        <url-pattern>/reportimage</url-pattern>
    </servlet-mapping>

这样基本的web版报表输出就ok了。