使用这个类不用安装任何第三方工具,因为采用http的方式发送xml文件,所以你只需要安装好JDK就可以了。执行此类还可以获得WebServices或xml rpc server返回的xml字符流,你可以根据返回的xml数据来进行其他程序处理。通过这种方式实现了Java平台和.NET平台的数据交换和Java客户端类调用C# WebService。
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下面是满足Java客户端类调用的源代码SOAPClient4XG.java:
- /**
- * SOAPClient4XG. Read the SOAP envelope
- file passed as the second
- * parameter, pass it to the SOAP endpoint
- passed as the first parameter, and
- * print out the SOAP envelope passed
- as a response. with help from Michael
- * Brennan 03/09/01
- *
- *
- * @author Bob DuCharme
- * @version 1.1
- * @param SOAPUrl URL of SOAP Endpoint
- to send request.
- * @param xmlFile2Send A file with an XML
- document of the request.
- *
- * 5/23/01 revision: SOAPAction added
- */
- import java.io.*;
- import java.net.*;
- public class SOAPClient4XG {
- public static void main(String[] args)
- throws Exception {
- if (args.length < 2) { //小于
- System.err.println("Usage: java SOAPClient4XG " +
- "http://soapURL soapEnvelopefile.xml" +
- " [SOAPAction]");
- System.err.println("SOAPAction is optional.");
- System.exit(1);
- }
- String SOAPUrl = args[0];
- String xmlFile2Send = args[1];
- String SOAPAction = "";
- if (args.length > 2) //大于
- SOAPAction = args[2];
- // Create the connection where we're going
- to send the file.
- URL url = new URL(SOAPUrl);
- URLConnection connection =
- url.openConnection();
- HttpURLConnection httpConn =
- (HttpURLConnection) connection;
- // Open the input file. After we copy
- it to a byte array, we can see
- // how big it is so that we can set the
- HTTP Cotent-Length
- // property. (See complete e-mail below
- for more on this.)
- FileInputStream fin =
- new FileInputStream(xmlFile2Send);
- ByteArrayOutputStream bout =
- new ByteArrayOutputStream();
- // Copy the SOAP file to the open connection.
- copy(fin,bout);
- fin.close();
- byte[] b = bout.toByteArray();
- // Set the appropriate HTTP parameters.
- httpConn.setRequestProperty( "Content-Length",
- String.valueOf( b.length ) );
- httpConn.setRequestProperty("Content-Type","
- text/xml; charset=utf-8");
- httpConn.setRequestProperty("SOAPAction",SOAPAction);
- httpConn.setRequestMethod( "POST" );
- httpConn.setDoOutput(true);
- httpConn.setDoInput(true);
- // Everything's set up; send the XML
- that was read in to b.
- OutputStream out = httpConn.getOutputStream();
- out.write( b );
- out.close();
- // Read the response and write it
- to standard out.
- InputStreamReader isr =
- new InputStreamReader(httpConn.getInputStream());
- BufferedReader in = new BufferedReader(isr);
- String inputLine;
- while ((inputLine = in.readLine()) != null)
- System.out.println(inputLine);
- in.close();
- }
- // copy method from From E.R. Harold's
- book "Java I/O"
- public static void copy(InputStream in,
- OutputStream out)
- throws IOException {
- // do not allow other threads to read from the
- // input or write to the output while copying is
- // taking place
- synchronized (in) {
- synchronized (out) {
- byte[] buffer = new byte[256];
- while (true) {
- int bytesRead = in.read(buffer);
- if (bytesRead == -1) break;
- out.write(buffer, 0, bytesRead);
- }
- }
- }
- }
- }
编译:javac SOAPClient4XG.java
运行的命令格式: java -classpath . SOAPClient4XG
http://localhost/BokeServices/Service1.asmx c:loginReq.xml
http://tempuri.org/UserLoginReq
不过先不要运行上面的命令,先介绍一下命令行的意思,http://localhost/BokeServices/Service1.asmx是C# WebService的地址;
c:loginReq..xml里的内容是Java客户端类调用WebService方法的xml文件, http://tempuri.org是WebService方法的命名空间,一定要有,否则调用失败,如果你在C# WebServices中使用了方法默认的命名空间的话,就使用http://tempuri.org,否则要与C#中定义的一致,UserLoginReq是C# WebServices的方法名。注意xml文件中的方法名和参数名是与C# WebServices的方法名、参数名是一一对应的(参数顺序是可以颠倒的)。
我先介绍一个简单的例子(c:loginReq.xml),这个xml文件调用了远程C# WebService的UserLoginReq方法,并带UserAcc(用户名)和UserPwd(口令)两个参数,调用成功后C#会自动返回一个xml格式的SOAP包。
- 〈?xml version="1.0" encoding="utf-8"?〉
- 〈soap:Envelope xmlns:xsi="
- http://www.w3.org/2001/XMLSchema-instance"
- xmlns:xsd="http://www.w3.org/2001/XMLSchema"
- xmlns:soap="http://schemas.xmlsoap.org/soap/
- envelope/"〉
- 〈soap:Body〉
- 〈UserLoginReq xmlns="http://tempuri.org/"〉
- 〈UserAcc〉baozheng〈/UserAcc〉
- 〈UserPwd〉mypwd〈/UserPwd〉
- 〈/UserLoginReq〉
- 〈/soap:Body〉
- 〈/soap:Envelope〉
现在看一下C# WebServices的UserLoginReq的方法的定义:
- public struct UserLoginResp
- {
- public string UserAcc;
- public int Result;
- }
- [WebMethod]
- public UserLoginResp UserLoginReq(string UserAcc,
- string UserPwd,int ReqFrom)
- {
- …
- }
注意结构UserLoginResp,C# WebServices返回SOAP信息时会自动将UserLoginResp结构转换成xml的格式。
用此类做xml rpc server 的客户端也很简单,下文是一个客户端rpc.xml文件,调用了xml rpc server 端实现的metaWeblog.deletePost方法。
- 〈?xml version="1.0" encoding="utf-8"?〉
- 〈methodCall〉
- 〈methodName〉metaWeblog.deletePost〈/methodName〉
- 〈params〉
- 〈param〉〈value〉appKeyValue〈/value〉〈/param〉
- 〈param〉〈value〉746〈/value〉〈/param〉
- 〈param〉〈value〉baozheng〈/value〉〈/param〉
- 〈param〉〈value〉Hello123〈/value〉〈/param〉
- 〈/params〉
- 〈/methodCall〉
调用命令的格式:
java -classpath %CLASSPATH%;. SOAPClient4XG.
http://192.168.25.97:8080/BokeeXmlRpc/xml-rpc rpc.xml
对比调用C# WebServices的命令行,可以看出调用xml rpc server的命令行少一个方法名参数。http://192.168.25.97:8080/BokeeXmlRpc/xml-rpc 是提供xml rpc 调用的server端servlet地址。
标题名称:使用Java客户端类调用C#WebService
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