ireport5.6+jasperreport6.3開發（五）--以javabean為基准的報表開發(action關聯)

這里的是定方法主要參照sturts2-jasperreport-plugin的完成方法（其實就是抄的）

PDF的樣子是這樣的兩頁的pdf

然后action的配置是這樣的（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("陳");
            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",

主要代碼段是這個result type 是jasper

location 是編譯后的jasper文件。入手途徑1ireport編譯后自動獲得，2自己寫一個compile獲得(sturts2-jasperreport-plugin程序里有)

format 是輸出格式 PDF HTML DOC EXCEL

dataSource 是數據源 也就是一個返回值是list的get屬性

reportKey 是用來做HTML圖片時做sessionkey用的

exportParameters 是報表report的param內容 也就是一個返回值是Map的get屬性

然后是STRUTS.xml的配置 定義了jasper類型

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

JasperReportsResult類就是struts plug抄過來的就是調用的地方重寫了一下

因為jasper升級以后調用方式改變了所以這里重新寫了一下，包括 數據庫連接 自定義javabean和param的輸入方式

 

@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);
        
        // 設置http頭
        // 本地緩存1分鍾
        response.setHeader("CACHE-CONTROL", "PRIVATE");
        response.setHeader("Cache-Control", "maxage=60");
        response.setHeader("Pragma", "public");
        // 完全接受后顯示
        response.setHeader("Accept-Ranges", "none");
        
        // 文字設定
        response.setCharacterEncoding("UTF-8");
        
        // action內設定的連接取得
        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...");
                }
            }
        }
        
        //取得服務器絕對路徑
        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;
            
            // 數據庫連接存在的時候
            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圖片取得serverlet設定
                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);
            }
            
            // 輸入編譯后的jasper的打印類
            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);
        }
    }

 

如果輸出為html的話還需要在web.xml中加入 img取得的servlet這個是和上邊代碼中的("reportimage?image={0}"相呼應的

    <!-- 報表html版的圖片取得 -->
      <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>

這樣基本的web版報表輸出就ok了。