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動的Webプロジェクトの作成 †

• [ファイル]-[新規作成] で、動的Webプロジェクトを作成する
  
  
• プロジェクトのプロパティで、Java の準拠レベルを 5.0 にする(6.0だとうまく自動生成されない)
  

Webサービスとして公開するPOJOプログラムの作成 †

なんの変哲もない POJO アプリ

• Webサービスで公開する業務ロジック

  package com.snail.exam;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.Comparator;
  import java.util.List;
  
  
  public class ColorSuggestionWebService {
      private static final String[][] X11Colors = {
              { "000000", "black" },
              { "000080", "navy" },
              { "00008B", "darkblue" },
              { "0000CD", "mediumblue" },
              { "0000FF", "blue" },
              { "006400", "darkgreen" },
              { "008000", "green" },
              { "008080", "teal" },
              { "008B8B", "darkcyan" },
              { "00BFFF", "deepskyblue" },
              { "00CED1", "darkturquoise" },
              { "00FA9A", "mediumspringgreen" },
              { "00FF00", "lime" },
              { "00FF7F", "springgreen" },
              { "00FFFF", "aqua" },
              { "00FFFF", "cyan" },
              { "191970", "midnightblue" },
              { "1E90FF", "dodgerblue" },
              { "20B2AA", "lightseagreen" },
              { "228B22", "forestgreen" },
              { "2E8B57", "seagreen" },
              { "2F4F4F", "darkslategray" },
              { "32CD32", "limegreen" },
              { "3CB371", "mediumseagreen" },
              { "40E0D0", "turquoise" },
              { "4169E1", "royalblue" },
              { "4682B4", "steelblue" },
              { "483D8B", "darkslateblue" },
              { "48D1CC", "mediumturquoise" },
              { "4B0082", "indigo" },
              { "556B2F", "darkolivegreen" },
              { "5F9EA0", "cadetblue" },
              { "6495ED", "cornflowerblue" },
              { "655ACD", "slateblue" },
              { "66CDAA", "mediumaquamarine" },
              { "696969", "dimgray" },
              { "6B8E23", "olivedrab" },
              { "708090", "slategray" },
              { "778899", "lightslategray" },
              { "7B68EE", "mediumslateblue" },
              { "7CFC00", "lawngreen" },
              { "7FFF00", "chartreuse" },
              { "7FFFD4", "aquamarine" },
              { "800000", "maroon" },
              { "800080", "purple" },
              { "808000", "olive" },
              { "808080", "gray" },
              { "87CEEB", "skyblue" },
              { "87CEFA", "lightskyblue" },
              { "8A2BE2", "blueviolet" },
              { "8B0000", "darkred" },
              { "8B008B", "darkmagenta" },
              { "8B4513", "saddlebrown" },
              { "8FBC8F", "darkseagreen" },
              { "90EE90", "lightgreen" },
              { "9370DB", "mediumpurple" },
              { "9400D3", "darkviolet" },
              { "98FB98", "palegreen" },
              { "9932CC", "darkorchid" },
              { "9ACD32", "yellowgreen" },
              { "A0522D", "sienna" },
              { "A52A2A", "brown" },
              { "A9A9A9", "darkgray" },
              { "ADD8E6", "lightblue" },
              { "ADFF2F", "greenyellow" },
              { "AFEEEE", "paleturquoise" },
              { "B0C4DE", "lightsteelblue" },
              { "B0E0E6", "powderblue" },
              { "B22222", "firebrick" },
              { "B886CD", "darkgoldenrod" },
              { "BA55D3", "mediumorchid" },
              { "BC8F8F", "rosybrown" },
              { "BDB76B", "darkkhaki" },
              { "C0C0C0", "silver" },
              { "C71585", "mediumvioletred" },
              { "CD5C5C", "indianred" },
              { "CD853F", "peru" },
              { "D2691E", "chocolate" },
              { "D2B48C", "tan" },
              { "D3D3D3", "lightgrey" },
              { "D8BFD8", "thistle" },
              { "DA70D6", "orchid" },
              { "DAA520", "goldenrod" },
              { "DB7093", "palevioletred" },
              { "DC143C", "crimson" },
              { "DCDCDC", "gainsboro" },
              { "DDA0DD", "plum" },
              { "DEB887", "burlywood" },
              { "E0FFFF", "lightcyan" },
              { "E6E6FA", "lavender" },
              { "E9967A", "darksalmon" },
              { "EE82EE", "violet" },
              { "EEE8AA", "palegoldenrod" },
              { "F08080", "lightcoral" },
              { "F0E68C", "khaki" },
              { "F0F8FF", "aliceblue" },
              { "F0FFF0", "honeydew" },
              { "F0FFFF", "azure" },
              { "F4A460", "sandybrown" },
              { "F5DEB3", "wheat" },
              { "F5F5DC", "beige" },
              { "F5F5F5", "whitesmoke" },
              { "F5FFFA", "mintcream" },
              { "F8F8FF", "ghostwhite" },
              { "FA8072", "salmon" },
              { "FAEBD7", "antiquewhite" },
              { "FAF0E6", "linen" },
              { "FAFAD2", "lightgoldenrodyellow" },
              { "FDF5E6", "oldlace" },
              { "FF0000", "red" },
              { "FF00FF", "fuchsia" },
              { "FF00FF", "magenta" },
              { "FF1493", "deeppink" },
              { "FF4500", "orangered" },
              { "FF6347", "tomato" },
              { "FF69B4", "hotpink" },
              { "FF7F50", "coral" },
              { "FF8C00", "darkorange" },
              { "FFA07A", "lightsalmon" },
              { "FFA500", "orange" },
              { "FFB6C1", "lightpink" },
              { "FFC0CB", "pink" },
              { "FFD700", "gold" },
              { "FFDAB9", "peachpuff" },
              { "FFDEAD", "navajowhite" },
              { "FFE4B5", "moccasin" },
              { "FFE4C4", "bisque" },
              { "FFE4E1", "mistyrose" },
              { "FFEBCD", "blanchedalmond" },
              { "FFEFD5", "papayawhip" },
              { "FFF0F5", "lavenderblush" },
              { "FFF5EE", "seashell" },
              { "FFF8DC", "cornsilk" },
              { "FFFACD", "lemonchiffon" },
              { "FFFAF0", "floralwhite" },
              { "FFFAFA", "snow" },
              { "FFFF00", "yellow" },
              { "FFFFE0", "lightyellow" },
              { "FFFFF0", "ivory" },
              { "FFFFFF", "white" }
          };
  
      public ColorSuggestionWebService() {
          super();
      }
  
      /**
       * 引数で指定された色に似ている X11 Color を 10 個返します
       * @param red RED
       * @param green GREEN
       * @param blue BLUE
       * @return 引数で指定された色に似ている X11 Color の配列
       */
      public ColorBean[] suggestColor(final int red, final int green, final int blue) throws Exception {
          if (red < 0 || 255 < red || green < 0 || 255 < green || blue < 0 || 255 < blue) {
              throw new Exception("Color value must be greater than -1 and less than 256.");
          }
  
          List<ColorBean> colorList = new ArrayList<ColorBean>();
  
          for (String[] color : X11Colors) {
              colorList.add(new ColorBean(color[0], color[1]));
          }
  
          Collections.sort(colorList,
              new Comparator<ColorBean>() {
                  public int compare(ColorBean o1, ColorBean o2) {
                      return o1.distance(red, green, blue) -
                      o2.distance(red, green, blue);
                  }
              });
  
          return colorList.subList(0, 10).toArray(new ColorBean[0]);
      }
  }
  

• Webサービスから返されるオブジェクト

  package com.snail.exam;
  
  public class ColorBean {
    private int pRed;
    private int pGreen;
    private int pBlue;
    private String pName;
    public ColorBean(){
      super();
    }
    public ColorBean(String rgbString,String name){
      int rgb = Integer.parseInt(rgbString,16);
      pRed = ( rgb & 0xff0000 ) >>> 16;
      pGreen = ( rgb & 0xff00 ) >>> 8;
      pBlue = rgb & 0xff;
      pName = name;
    }
    public int getRed() {
      return pRed;
    }
    public void setRed(int red) {
      pRed = red;
    }
    public int getGreen() {
      return pGreen;
    }
    public void setGreen(int green) {
      pGreen = green;
    }
    public int getBlue() {
      return pBlue;
    }
    public void setBlue(int blue) {
      pBlue = blue;
    }
    public String getName() {
      return pName;
    }
    public void setName(String name) {
      pName = name;
    }
    public int distance(int red,int green,int blue){
      return Math.abs(red-pRed)+Math.abs(green-pGreen)+Math.abs(blue-pBlue);
    }
  }
  

Webサービス化 †

• POJOオブジェクトを右クリックして [Webサービス]-[Webサービスの作成]
   
  
   
• POJOオブジェクトのメソッドを Web サービスとして公開すると同時に、クライアント側のスライドバーを一つあげて、クライアントアプリも生成するよう設定する
  
  
  
  
  
• クライアントプロジェクトができた
   
  

Webサービスクライアントプログラム †

package com.snail.exam;

import java.rmi.RemoteException;

public class ExamClient {

  /**
   * @param args
   */
  public static void main(String[] args) {
    ColorSuggestionWebService client = new ColorSuggestionWebServiceProxy();
    try {
      ColorBean[] result = client.suggestColor(255, 0, 0);
      for (ColorBean cb : result) {
        System.out.println(cb.getName() + "(R:" + cb.getRed() + "G:"
            + cb.getGreen() + "B:" + cb.getBlue() + ")");
      }
    } catch (RemoteException e) {
      e.printStackTrace();
    }
  }
}

WebサービスクライアントからWebサービスを実行する †

確かに、赤(FF0000)に近い色が 10 種類提示された

つづき †

• AJAX The Web Service Javascript Libraryへ続く
• せっかくなので VC# から Web サービスへのアクセスの仕方のメモも・・・気が向いたら

Java#JavaEE