web service算是软件或者网页里的功能外包了吧，实现过程看起来蛮简单的，但实际挺琐屑的
【实验原理和步骤】
1.实验原理
技术路线:查找并调用股票行情接口,获取股票行情数据,并实现股票行情的图形展示。
2.实现步骤:
(1) 查找和熟悉公开的股票行情数据接口;
(2)基于 Eclipse 开发 Webservice 调用程序;
(3)搭建 WEB 应用框架,开发股票行情的 WEB 图形展示网页;
(4) 部署系统;
(5) 测试系统。
【方案设计】
1) 编写web网页，构建查询页面；
2) 编写client程序，在eclipse上运行，开启一个ServerSocket在端口1234上监听，从web端获取请求后，根据SOAP协议，调用服务器端的web service；
3）处理服务器端返回的数据，生成图表；
4）编写web网页对结果进行展示。
Talk is cheap, give me your code.
客户端程序：
1 import java.io.BufferedReader;
2 import java.io.DataOutputStream;
3 import java.io.File;
4 import java.io.FileInputStream;
5 import java.io.FileOutputStream;
6 import java.io.IOException;
7 import java.io.InputStream;
8 import java.io.InputStreamReader;
9 import java.net.ServerSocket;
10 import java.net.Socket;
11 import java.nio.channels.Channels;
12 import java.nio.channels.FileChannel;
13 import java.nio.channels.WritableByteChannel;
14 import org.w3c.dom.NodeList;
15
16 import javax.xml.bind.DatatypeConverter;
17 import javax.xml.soap.MessageFactory;
18 import javax.xml.soap.MimeHeaders;
19 import javax.xml.soap.SOAPBody;
20 import javax.xml.soap.SOAPConnection;
21 import javax.xml.soap.SOAPConnectionFactory;
22 import javax.xml.soap.SOAPElement;
23 import javax.xml.soap.SOAPEnvelope;
24 import javax.xml.soap.SOAPMessage;
25 import javax.xml.soap.SOAPPart;
26 import javax.xml.transform.Source;
27 import javax.xml.transform.Transformer;
28 import javax.xml.transform.TransformerFactory;
29 import javax.xml.transform.stream.StreamResult;
30
31 /*
32 * A client to call web service on http://www.webxml.com.cn:80/WebServices/ChinaStockWebService.asmx/ to get the
33 * information of the stock given by code, and return the web browser with a graph show the information
34 *
35 * @Author alex<[email protected]>
36 */
37 public class stock_web_client extends Thread{
38
39 private InputStream fin;
40 private int PortNum;
41 private ServerSocket ss;
42 private Socket soc;
43 InputStream dis;
44 DataOutputStream dos;
45 BufferedReader br;
46 File f=new File("/home/alex/Documents/abc.html"); //the html to get input
47 File f2=new File("/home/alex/Documents/aaa.html"); //the html to display the result
48 File f3=new File("/home/alex/Documents/result.gif"); //the result image
49 boolean doo=true;
50 String Server_URI="http://WebXml.com.cn/";
51 String URL="http://www.webxml.com.cn/WebServices/ChinaStockWebService.asmx";
52
53 public stock_web_client(int port) throws IOException{
54 System.out.print("Enter the port number: ");
55 PortNum=port;
56 ss=new ServerSocket(PortNum);
57 System.out.println("Client get ready at port "+PortNum+"\nWaiting for connection");
58
59
60 }
61 /**
62 * Get the file name
63 */
64 String getFile(String url){
65 String file_name;
66 int a;
67 a=url.indexOf("/");
68 file_name=url.substring(a);
69 a=file_name.indexOf("?");
70 if(a!=-1)
71 return "No File";
72 a=file_name.indexOf(" ");
73 file_name=file_name.substring(0,a);
74 return file_name;
75 }
76 /*
77 * Get the what method should call
78 */
79 String getAction(String url){
80 String act;
81 if(url==null)return "nothing to do";
82 int a;
83 a=url.indexOf("/");
84 act=url.substring(a);
85 if(a==-1)return "nothing to do";
86 a=act.indexOf("?");
87 if(a==-1)return "nothing to do";
88 act=act.substring(0,a);
89 return act;
90 }
91 /*
92 * Get parameter in request, the format of returned string like that,
93 * ParName=Value&ParName=Value&...&parName=Value
94 */
95 String getParameter(String url){
96 String pa;
97 int a;
98 a=url.indexOf("?");
99 if(a==-1)return "no parameter";
100 url=url.substring(a+1);
101 a=url.indexOf(" ");
102 pa=url.substring(0,a);
103 return pa;
104 }
105 public boolean getStockImageByteByCode(String code) throws Exception{
106 MessageFactory mf = MessageFactory.newInstance();;
107 SOAPMessage sm=mf.createMessage();
108 SOAPPart sp=sm.getSOAPPart();
109 SOAPEnvelope se=sp.getEnvelope();
110 se.addNamespaceDeclaration("Server", Server_URI);
111
112 //Construct SOAP body
113 SOAPBody sb=se.getBody();
114 SOAPElement sbe1=sb.addChildElement("getStockImageByteByCode","Server");
115 sbe1.setAttribute("xmlns", Server_URI);
116 SOAPElement sbe2=sbe1.addChildElement("theStockCode","Server");
117 sbe2.addTextNode(code);
118
119 //Construst SOAP head
120 MimeHeaders mh=sm.getMimeHeaders();
121 mh.addHeader("SOAPAction", Server_URI+"getStockImageByteByCode");
122
123 sm.saveChanges();
124
125 System.out.println("SOAP REQUEST Message: ");
126 sm.writeTo(System.out);
127
128 get_SOAP_Response(sm);
129
130 return true;
131 }
132
133 public void get_SOAP_Response(SOAPMessage sm) throws Exception{
134 SOAPConnectionFactory scf=SOAPConnectionFactory.newInstance();
135 SOAPConnection sc= scf.createConnection();
136 SOAPMessage smr=sc.call(sm,URL);
137 //print the content of the returned message
138 TransformerFactory tf=TransformerFactory.newInstance();
139 Transformer tr=tf.newTransformer();
140 Source sourceContent=smr.getSOAPPart().getContent();
141 System.out.println("\nSOAP RESPONSE Message: ");
142 tr.transform(sourceContent, new StreamResult(System.out));
143
144 //fetch the imagine content from the message
145 NodeList jpg=smr.getSOAPBody().getElementsByTagName("getStockImageByteByCodeResult");
146 String abc=jpg.item(0).getTextContent().trim();
147 System.out.print("\n"+abc);
148
149 //convert byte array to image
150 File image_file=new File("/home/alex/Documents/result.gif");
151 FileOutputStream fos=new FileOutputStream(image_file);
152 byte[] pic=DatatypeConverter.parseBase64Binary(abc);
153 fos.write(pic);
154 fos.close();
155 //ByteArrayInputStream bais = new ByteArrayInputStream(pic_bytes);
156 //BufferedImage bi = ImageIO.read((InputStream) bais);
157 //ImageIO.write(bi, "GIF", image_file);
158 /*
159 Iterator<ImageReader> reads=ImageIO.getImageReadersByFormatName("gif");
160 ByteArrayInputStream bis=new ByteArrayInputStream(temp);
161 ImageReader img_re=reads.next();
162 Object source=bis;
163 ImageInputStream iis=ImageIO.createImageInputStream(source);
164 img_re.setInput(iis,true);
165 ImageReadParam irp=img_re.getDefaultReadParam();
166
167 Image image=img_re.read(0,irp);
168 BufferedImage bfi=new BufferedImage(image.getWidth(null),image.getHeight(null),BufferedImage.TYPE_INT_RGB);
169
170 Graphics2D gra=bfi.createGraphics();
171 gra.drawImage(image, null, null);
172
173 ImageIO.write(bfi, "gif", image_file);
174 */
175 //return smr;
176
177 }
178
179 public void run(){
180
181 try {
182
183 while(true){
184 soc=ss.accept();
185 dis=soc.getInputStream();
186 dos=new DataOutputStream(soc.getOutputStream());
187 BufferedReader brr=new BufferedReader(new InputStreamReader(dis));
188 //byte[] ch=new byte[(int)f.length()];
189 fin=new FileInputStream(f);
190 String write=brr.readLine();
191 //int k=0;
192 //while(!write.endsWith("</html>")&&k<7){
193 //k++;
194 //if(write.startsWith("POST /abc.aa")){
195 //while(true){
196 //System.out.println(String.valueOf(write));
197 //write=brr.readLine();
198 //}
199 //}
200 System.out.println("\ncomes from the web: "+write);
201 String act=getAction(write);
202 System.out.println(act);
203 String pa=getParameter(write);
204 System.out.println(pa);
205 String fn=getFile(write);
206 System.out.println(fn);
207
208 //write=brr.readLine();
209 //if(fn.equalsIgnoreCase("/result.gif")){
210 //FileInputStream ffin=new FileInputStream(f2);
211 //BufferedReader bbr=new BufferedReader(new InputStreamReader(ffin));
212 // return the html to display the image
213 /*byte[] img_bytes=Files.readAllBytes(f2.toPath());
214 dos.write(img_bytes);
215 dos.flush();
216 //ffin.close();
217 soc.close();
218 dos.close();
219 //bbr.close();*/
220 /* FileChannel in=new FileInputStream (f2).getChannel();
221 WritableByteChannel out=Channels.newChannel(soc.getOutputStream());
222 in.transferTo(0, f2.length(), out);
223 //stop the client process
224 break;
225 }*/
226 //Once got the input from user, then process the reques
227 if(act.equalsIgnoreCase("/getStockImageByteByCode"))
228 if(getStockImageByteByCode(pa.substring(pa.indexOf("=")+1))){
229 FileInputStream ffin=new FileInputStream(f2);
230 BufferedReader bbr=new BufferedReader(new InputStreamReader(ffin));
231 dos.writeBytes("HTTP/1.1 200 OK \r\nConnection: close\r\nServer: Alex‘s Server \r\nContent-Type: text/html\r\n\r\n");
232
233 // return the html to display the image
234 do{
235 write=bbr.readLine();
236 dos.writeBytes(write+"\r\n");
237 }while(!write.equalsIgnoreCase("</html>"));
238
239 //this.sleep(40000);
240 dos.flush();
241 ffin.close();
242 //soc.close();
243 //dos.close();
244 bbr.close();
245 //stop the client process
246 break;
247 }
248
249 //System.out.println(String.valueOf(write));
250 //}
251 //ch=fin.read();
252 dos.writeBytes("HTTP/1.1 200 OK \r\nConnection: close\r\nServer: Alex‘s Server \r\nContent-Type: text/html\r\n\r\n");
253 InputStreamReader is=new InputStreamReader(fin);
254 br=new BufferedReader(is);
255 do{
256 write=br.readLine();
257 dos.writeBytes(write+"\r\n");
258 //System.out.println(write);
259 //aaa++;
260 //System.out.print(aaa);
261 }while(!write.equalsIgnoreCase("</html>"));
262 if(doo==true)doo=false;
263 //System.out.println(brr.readLine());
264 //dos.write(ch, 0, ch.length);
265 //}while(ch!=-1);
266 dos.flush();
267
268 fin.close();
269 soc.close();
270 dos.close();
271 //*/
272 }
273
274
275
276 } catch (Exception e) {
277 e.printStackTrace();
278 }
279
280
281 }
282
283 public static void main(String[] args){
284 //HttpServer hs=HttpServer.create(new InetSocketAddress(1234), 1);
285 try {
286 stock_web_client swc=new stock_web_client(1234);
287 swc.start();
288 } catch (IOException e) {
289 e.printStackTrace();
290 }
291 }
292 }
stock_web_client
获取输入页面：
1 <html>
2 <head>
3 <title>get Stock Image By Code</title>
4 <head>
5
6 <body>
7 <h1>This is the post page.</h1>
8 <form target="_blank" action=‘getStockImageByteByCode‘ method="GET">
9
10 <label> enter the stock code and the client will return a image of this stock </label>
11 <p>
12
13 <span>
14 <input class="frmInput" type="text" size="30" name="theStockCode">
15 </span>
16
17 <span>
18 <input type="submit" value="submit" class="button">
19 </span>
20
21 </p>
22
23 </form>
24
25 </body>
26 </html>
abc.html
成果展示页面：
1 <html><head><meta http-equiv="Content-Type" content="text/html; charset=GBK">
2 <title> image of the search result </title>
3 <h1>This is the image returned by the search on the server</h1>
4 <img src="file://localhost/home/alex/Documents/result.gif" alt="result"></img>
5 </html>
aaa.html
这下面英文文档是关于创建web
service的，在这次实验里基本没用到，但当时觉得这些说得很细，所以就存了下来，哪天让我写个web service时，就能参考了。
Requirements of a JAX-WS Endpoint
JAX-WS endpoints must follow these requirements:
- The implementing class must be annotated with either the
javax.jws.WebServiceorjavax.jws.WebServiceProviderannotation.
- The implementing class may explicitly reference an SEI through
theendpointInterfaceelement of
the@WebServiceannotation, but is not
required to do so. If no endpointInterface is not specified in@WebService, an SEI is implicityly defined for the
implementing class.
- The business methods of the implementing class must be public, and must
not be declaredstaticorfinal.
- Business methods that are exposed to web service clients must be annotated
withjavax.jws.WebMethod.
- Business methods that are exposed to web service clients must have
JAX-B-compatible parameters and return types. See Default
Data Type Bindings.
- The implementing class must not be declared
finaland must not beabstract.
- The implementing class must have a default public constructor.
- The implementing class must not define the
finalizemethod.
- The implementing class may use the
javax.annotation.PostConstructorjavax.annotation.PreDestroyannotations
on its methods for lifecycle event callbacks.
很犯懒，基本都是实验报告里的东西复制粘贴过来的。。。
这个实验耗费了我整整3天时间，这个过程就是不断绕弯路，不断自己爬回来的过程，代码推倒重写三遍以上，过程中学到的东西不少，本想多些点自己这两天这里面学到的细节细活，凌晨4点了，算了=。=
时间： 2024-10-24 21:00:00