first commit

hrmsEjb/wenrgise/report/excel/ExcelReportServlet.java

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+package wenrgise.report.excel;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.zip.GZIPOutputStream;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import jxl.Workbook;
+import jxl.WorkbookSettings;
+import jxl.write.WritableSheet;
+import jxl.write.WritableWorkbook;
+
+public class ExcelReportServlet extends HttpServlet {
+  private static final String CONTENT_TYPE_EXCEL = "application/vnd.ms-excel";
+  
+  private static final String CONTENT_TYPE_ZIP = "application/zip";
+  
+  public void init(ServletConfig config) throws ServletException {
+    super.init(config);
+  }
+  
+  public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
+    processRequest(request, response);
+  }
+  
+  public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
+    processRequest(request, response);
+  }
+  
+  private boolean isGzipSupported(HttpServletRequest request) {
+    String encodings = request.getHeader("Accept-Encoding");
+    return (encodings != null && encodings.indexOf("gzip") != -1);
+  }
+  
+  protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
+    response.setContentType("application/zip");
+    String reportName = request.getParameter("reportname");
+    String inputParam1 = request.getParameter("inputparam1");
+    String inputParam2 = request.getParameter("inputparam2");
+    ServletOutputStream servletOutputStream = response.getOutputStream();
+    GZIPOutputStream gZIPOutputStream = new GZIPOutputStream((OutputStream)servletOutputStream);
+    ExcelReport excelReport = new ExcelReport();
+    WorkbookSettings ws = excelReport.getWorkBookSetting();
+    try {
+      WritableWorkbook workbook = Workbook.createWorkbook(gZIPOutputStream, ws);
+      WritableSheet s = workbook.createSheet(reportName, 0);
+      ExcelReportInformation ex = new ExcelReportInformation(reportName);
+      String query = ex.getReportQuery(inputParam1, inputParam2);
+      ArrayList aHeader = ex.getReportHeader();
+      excelReport.writeDataSheet(s, aHeader, query);
+      workbook.write();
+      workbook.close();
+      gZIPOutputStream.flush();
+    } catch (Exception e) {
+      e.printStackTrace();
+    } 
+  }
+}