系统原型结构描述（七）

IndexHelpAction.java

package com.test.action.help;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class IndexHelpAction extends ActionSupport {
public String execute() {
ActionContext ct= ActionContext.getContext();

Map session = ct.getSession();

session.put("hello", "hello world!");

System.out.println( session.size()+ " " + session);

return SUCCESS;
}
}

IndexViewProcessAction.java

package com.test.action.view;

import java.util.List;

import com.opensymphony.xwork2.ActionSupport;
import com.test.page.PageManager;
import com.test.page.PageValue;

public class IndexViewProcessAction extends ActionSupport {
private PageManager pageManager = null;
private List list = null;
public int current;
public PageValue page = new PageValue();

public String execute() {
//list = this.bookService.selectAllBooks(0, this.bookService.getBookTotal

());

page.setCurrent(current);
page = this.pageManager.run(page);
list = page.getResult();

return SUCCESS;
}
public PageManager getPageManager() {
return pageManager;
}
public void setPageManager(PageManager pageManager) {
this.pageManager = pageManager;
}
public int getCurrent() {
return current;
}
public void setCurrent(int current) {
this.current = current;
}
public PageValue getPage() {
return page;
}
public void setPage(PageValue page) {
this.page = page;
}
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
}

DisplayChart.java

/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -----------------
* DisplayChart.java
* -----------------
* (C) Copyright 2002-2007, by Richard Atkinson and Contributors.
*
* Original Author: Richard Atkinson;
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* Changes
* -------
* 19-Aug-2002 : Version 1;
* 09-Mar-2005 : Added facility to serve up "one time" charts - see
* ServletUtilities.java (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 02-Feb-2007 : Removed author tags all over JFreeChart sources (DG);
*
*/

package com.test.action.view.chart;

import java.io.File;
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.jfree.chart.servlet.ChartDeleter;
import org.jfree.chart.servlet.ServletUtilities;

/**
* Servlet used for streaming charts to the client browser from the temporary
* directory. You need to add this servlet and mapping to your deployment
* descriptor (web.xml) in order to get it to work. The syntax is as follows:
* <xmp>
* <servlet>
* <servlet-name>DisplayChart</servlet-name>
* <servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
* </servlet>
* <servlet-mapping>
* <servlet-name>DisplayChart</servlet-name>
* <url-pattern>/servlet/DisplayChart</url-pattern>
* </servlet-mapping>
* </xmp>
*/
public class DisplayChart extends HttpServlet {

/**
* Default constructor.
*/
public DisplayChart() {
super();
}

/**
* Init method.
*
* @throws ServletException never.
*/
public void init() throws ServletException {
return;
}

/**
* Service method.
*
* @param request the request.
* @param response the response.
*
* @throws ServletException ??.
* @throws IOException ??.
*/
public void service(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {

HttpSession session = request.getSession();
String filename = request.getParameter("filename");

if (filename == null) {
throw new ServletException("Parameter 'filename' must be supplied");
}

// Replace ".." with ""
// This is to prevent access to the rest of the file system
filename = ServletUtilities.searchReplace(filename, "..", "");

// Check the file exists
File file = new File(System.getProperty("java.io.tmpdir"), filename);
if (!file.exists()) {
throw new ServletException("File '" + file.getAbsolutePath()
+ "' does not exist");
}

// Check that the graph being served was created by the current user
// or that it begins with "public"
boolean isChartInUserList = false;
ChartDeleter chartDeleter = (ChartDeleter) session.getAttribute(
"JFreeChart_Deleter");
if (chartDeleter != null) {
isChartInUserList = chartDeleter.isChartAvailable(filename);
} else {
isChartInUserList = true;
}

boolean isChartPublic = false;
if (filename.length() >= 6) {
if (filename.substring(0, 6).equals("public")) {
isChartPublic = true;
}
}

boolean isOneTimeChart = false;
if (filename.startsWith(ServletUtilities.getTempOneTimeFilePrefix())) {
isOneTimeChart = true;
}

if (isChartInUserList || isChartPublic || isOneTimeChart) {
// Serve it up
ServletUtilities.sendTempFile(file, response);
if (isOneTimeChart) {
file.delete();
}
}
else {
throw new ServletException("Chart image not found");
}
return;
}

}

IndexChartProcessAction.java

package com.test.action.view.chart;

import java.io.IOException;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.math.RandomUtils;
import org.apache.struts2.ServletActionContext;
import org.apache.struts2.interceptor.SessionAware;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.test.logic.service.BookService;

public class IndexChartProcessAction extends ActionSupport implements SessionAware {
private BookService bookService = null;
public JFreeChart chart;

public BookService getBookService() {
return bookService;
}
public void setBookService(BookService bookService) {
this.bookService = bookService;
}
public String execute() {

XYSeries dataSeries = new XYSeries(new Integer(1));
for(int i = 0; i <= 1000; i++) {
dataSeries.add(i, RandomUtils.nextInt());
}
XYSeriesCollection xyDataset = new XYSeriesCollection(dataSeries);

ValueAxis xAxis = new NumberAxis("Raw Marks");
ValueAxis yAxis = new NumberAxis("Moderated Marks");

chart =
new JFreeChart (
"Moderation Function",
JFreeChart.DEFAULT_TITLE_FONT,
new XYPlot(
xyDataset,
xAxis,
yAxis,
new StandardXYItemRenderer

(StandardXYItemRenderer.LINES)),
false);
chart.setBackgroundPaint(java.awt.Color.white);
ActionContext ctx = ActionContext.getContext();
HttpServletRequest request = (HttpServletRequest)ctx.get

(ServletActionContext.HTTP_REQUEST);

try {
request.setAttribute("filename", ServletUtilities.saveChartAsPNG

(chart, 400, 300, request.getSession()));
System.out.println(request.getSession().getId());

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return SUCCESS;
}
public JFreeChart getChart() {
return chart;
}
public void setChart(JFreeChart chart) {
this.chart = chart;
}
public void setSession(Map arg0) {
// TODO Auto-generated method stub

}
}