CGS4854 Assignment 3

Due Tuesday, 6/7

If you had any errors in Homework 2, then fix them, so that you don't lose points twice for the same mistake.

Enhanced Controller

Create a new package for this assignment in your username web app. It should start with the same fields, pages and validations that were required for Homework 2.

• Do not change the files that were used for assignment 2.
  • Assignment 2 should still be accessible from the web app.
  • You may copy files from assignment 2 into this new package.
  • You may import files from assignment 2, if they are unchanged.
• Modify the application so that it implements all the features from Chapter 4. Review the steps in Tutorial 3.
  • Add all the necessary files to the shared package.
  • Note that HellperBaseCh4 should be placed in the shared package.
  • Add all the necessary JAR files to the Libraries folder.
• Set up the log file properly.
  • Create the error.log file in the WEB-INF -> logs folder.
  • Edit web.xml and add the servlet definition for InitLog4j. Be sure it is called whenever the web app is loaded.
• Bean
  • Place the bean in the same package as the controller.
  • Start with the bean that was used in Homework 2.
  • Think of a calculation that needs to be done for your site. The calculation should include a double and an integer. Think of a calculation that fits the theme of your site. Some examples might be:
    • cost = price * quantity
    • average price = cost / quantity
    • total grade points = grade points * credits
    • gpa = total grade points / credits
    • total storage = megabytes * disks
    • average storage = total megabytes / disks
    • discount = total price * discout rate
    • shipping cost = total pounds * rate
    • handling fee = items * fee
  • Add a bean property that is a double.
    • This corresponds to the double that is used in your calculation.
    • Use default validation and validate that the number is between reasonable minimum and maximum values. If the input is not valid, choose a suitable default value. BeanUtils will set the value to 0 if a non-number is entered by the user. Be sure that 0 is not a valid value in your validation.
    • Provide an appropriate default value if the data is invalid.
  • Add a bean property that is an int.
    • This corresponds to the integer that is used in your calculation.
    • Use default validation and validate that the number is between reasonable minimum and maximum values. If the input is not valid, choose a suitable default value. BeanUtils will set the value to 0 if a non-number is entered by the user. Be sure that 0 is not a valid value in your validation.
    • Provide an appropriate default value if the data is invalid.
  • Add an accessor that returns a double.
    • There will be no mutator for this property (do not add a setter).
    • There will be no variable for this field. Do not add a varible for this field in your bean.
    • The accessor will return the result of the calculation.
    • This type of accessor is known as a calculated field.
• Controller Helper
  • Use a unique name, other than "helper", to save the controller helper in the session.
  • Change the name of the getData method to another name (it must start with get).
• JSPs
  • There should be no hidden fields in any of the JSPs.
  • The JSPs should be in a hidden directory, but not in the same directory as the controller. Move the JSPs to an appropriate subdirectory of WEB-INF (not under classes).
  • Modify all the EL statements so that they refer to the new name that you used to store the helper in the session.
  • Modify all the EL statements so that they do not use data, but use the appropriate name for the new accessor method.
  • Add a new field to the edit page that will hold a double. This field will correspond to the new bean property that is a double.
  • Add a new field to the edit page that will hold an int. This field will correspond to the new bean property that is an int.
  • Echo these new fields in the confirm, wish list and process pages.
  • Echo the result of the calculation in the process page only. Use the bean property that only has an accessor.
• Be sure there is a hypertext link in the index.jsp page to the controller. Use a relative link.
• The web app must use the secure web.xml file and should only allow you and me to access your application: Edit tomcat users
• Be sure to modify the project so that the .java files are placed in the WAR file: Configuring WAR File
• After the app is running in NetBeans, upload it and run it on ocelot: Uploading a WAR file

Take a look at your log file, you will see that there are messages in it.

• Open the Files tab in NetBeans and navigate to build -> web -> WEB-INF -> logs
• Open the error.log file. It will look something like this (book will be replaced by the name of your web application).
  

ROOT Web Application

Be sure you have the following links in the ROOT/index.jsp file.

• Relative link to manager/html.
• Relative link to the root of your web application.
• Absolute link to your student host using your Apache port.

Apache index.html

Be sure you have the following links in the docRoot/index.html file.

• Relative link to manager/html.
• Relative link to the root of your web application.

Submitting the Assignment

Clean and Build your web application. After doing this, navigate to the WAR file in NetBeans and verify that the .java files are included: View WAR File

• Since you are using a log file that is in the web application, you will need to shut down Tomcat before you can do a Clean and Build.
• Open the Services (Runtime in 5.5) folder and open the Servers folder.
• Right-click the Tomcat server and select Stop.
• Now you can do a Clean and Build. 

In the operating system (not in NetBeans) navigate to the dist folder in the NetBeans project.

Deploy the WAR file on ocelot: Deploy a WAR File

• After deploying, open the WEB-INF/logs directory in winscp or on ocelot.
• Change the permission of the error.log file to 606. This will allow Tomcat to write to the file.
• Use the manager to stop your web application and then start it again. This will force it to reread the web.xml file so that the logger can be initialized.
• Access your application and visit all the pages, then verify that some new messages have been added to the log file.

New procedute to hand in assignments. To hand in the assignment, zip the following directories into one ZIP file and upload it.

• Please zip the following. Issue a separate ZIP command for each. All the files will be added to the same ZIP file.
  • Remove the old zip file.
    rm ~/username.zip
  • Please use the following command to compress your cgs4854/webapps/username folder.
    zip -r username ~/cgs4854/webapps/username -x \*.jar \*.zip \*.war
    Replacing username with your user name. This will create a file named username.zip. It contains the username web application.
  • Please use the following command to compress your cgs4854/serverRoot folder.
    zip -r username ~/cgs4854/serverRoot -x \*.jar \*.zip \*.war
    Replacing username with your user name. This will create a file named username.zip. It contains the username web application.
  • Please use the following command to compress your cgs4854/docRoot folder.
    zip -r username ~/cgs4854/docRoot -x \*.jar \*.zip \*.war
    Replacing username with your user name. This will create a file named username.zip. It contains the username web application.
• Check the size of the ZIP file, it should be less than 3 MB. If it is not, then you probably have another ZIP file stored in the ZIP archive. Delete it and re-zip.
• You then have a choice for submitting the file.
  • If you are logged onto ocelot, use my uploading program to upload the file. Enter this command at the command prompt:
    ~downeyt/cs/public/webftp/webftp.pl
  • If you are using winscp, then download the zip file to your computer; then, upload the file to me: Submitting homework on-line via the Web.
• Upload the file as binary.

Be sure that all your files and subdirectories are included in the zip file.
After uploading, do not modify your files on ocelot until after your assignment has been graded.