應用 JSP 範例：處理流送出其內容的操作

以下是一個範例，說明如何在 JSP 中處理流送出其內容的操作：

<%@ page language="java" contentType="text/html;charset=UTF-8" pageEncoding="UTF-8" %>
<%-- 引入套件 --%>
<%@ page session="true" %>
<%@ page import="java.sql.*,java.util.*" %>

<%@ page import="si.*" %>
<%@ page import="si.wfinterface.*" %>
<%@ page import="pe.pase.*" %>

<%@ page import="com.everunion.services.WFCIService, org.apache.commons.beanutils.BeanUtils" %>
<%@ page import="com.everunion.flow.order.*"%>
<%@ page import="com.everunion.util.*,com.everunion.flow.order.Comm"%>
<%@ page import="com.everunion.flow.quotation.IS8N" %>

<%!
/**
 * 當傳來的 str 在 request 裡為 null 時，傳回 ""
 * @param request HttpServletRequest
 * @param name 需要獲取的頁面上的 name
 * @param init 預設值，如果頁面上沒有那個 name 的值，則傳回此值
 * @return 獲取的頁面上的 name，頁面上沒有則傳回 init
 */
public String getParameter(HttpServletRequest request, String name, String init) {
    if (request.getParameter(name) == null) return init;
    String re = request.getParameter(name);
    if ("".equals(re)) return init;
    if ("NULL".equals(re.toUpperCase())) return init;
    return re;
}
%>

<%
try {
    // 流程階段號碼
    int stepNo = 0;
    stepNo = Integer.parseInt(getParameter(request, "stepNo", "0"));

    // 任務 ID
    String taskID = "";
    if (request.getParameter("TaskID") != null)
        taskID = request.getParameter("TaskID");

    WFCI wfci = WFCIService.getWFCI();
    // 任務對象
    Task task = wfci.getTask(taskID);
    PASEartInstance artInstance = null;

    if (task != null) {
        artInstance = task.getArtInstance();
        if (stepNo == 1) {
            String Giveup = getParameter(request, "Giveup", "");
            if (!"true".equals(Giveup)) {
                String deputyLoginID = getParameter(request, "deputy", ""); // 先獲取 deputy 的 loginID
                MemberRecord m = wfci.getMemberByName(deputyLoginID);
                artInstance.setAppValue("deputyID", m.getMyID());
            }
        }
        // 把窗體送來的所有內容都更新過去。
        Enumeration<String> e = request.getParameterNames();
        while (e.hasMoreElements()) {
            String key = e.nextElement();
            if ("timeStamp".equals(key) || "TaskID".equals(key) || "stepNo".equals(key)) continue;
            String value = getParameter(request, key, ""); // request.getParameter(key);
            artInstance.setAppValue(key, value);
        }
        wfci.updateArtInstance(artInstance);
        wfci.completeTask(task);
    }

} catch (Exception e) {
    e.printStackTrace();
    System.out.println("_Ajax.jsp error" + e);
}
%>