parameterpage.java

这是一个java编写的程序

/**
 * Example Mapper Application
 * by: Marty Phelan
 *
 * This example is free software; you can redistribute it and/or
 * modify it as you wish.  It is released to the public domain.
 *
 * This example 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.
 */
package com.taursys.examples.simpleweb;

import com.taursys.servlet.ServletForm;
import com.taursys.xml.Parameter;
import com.taursys.xml.TextField;

/**
 * This form demonstrates how to use Parameters in a ServletForm.
 * Parameters are different from TextFields in that they are not
 * bound to the XML document, and they receive their input before
 * TextFields.
 */
public class ParameterPage extends ServletForm {
  Parameter searchKey = new Parameter();
  TextField results = new TextField();

  /**
   * Constructs a new ParameterPage and initializes component properties.
   */
  public ParameterPage() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }

  /**
   * Set component properties here.  It is not recommended to put anything
   * other than property settings in here.  Any Exception will cause the
   * constructor to fail.
   */
  private void jbInit() throws Exception {
    this.setDocumentURI("resource:///forms/ParameterPage.html");
    searchKey.setParameter("searchKey");
    results.setId("results");
    this.add(searchKey);
    this.add(results);
  }

  /**
   * One time initialization of the ServletForm.  This method is invoked ONCE.
   * It is the first method invoked by the doGet method.  If the form is
   * recycled, it will NOT be invoked again by doGet.
   */
  protected void initForm() throws java.lang.Exception {
    super.initForm();
  }

  /**
   * This method is invoked by doGet to open the form.
   * It is invoked after any parameters have been read, but before input
   * values have been read.  Override this method to provide custom
   * behavior such as opening data sources.  There is no need to invoke
   * super.openForm().
   */
  protected void openForm() throws java.lang.Exception {
    // Set results based on SearchKey
    if (searchKey.getText().length() != 0) {
      if (searchKey.getText().equals("gold"))
        results.setText("You win the prize!!");
      else
        results.setText("Try again. (hint: a yellow precious metal).");
    } else {
      results.setText("Try and guess the password.");
    }
  }
}