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這篇文章給大家分享的是有關軟件使用Java客戶端類調用C# WebService的內容。小編覺得挺實用的,因此分享給大家做個參考,一起跟隨小編過來看看吧。
使用這個類不用安裝任何第三方工具,因為采用http的方式發送xml文件,所以你只需要安裝好JDK就可以了。執行此類還可以獲得WebServices或xml rpc server返回的xml字符流,你可以根據返回的xml數據來進行其他程序處理。通過這種方式實現了Java平臺和.NET平臺的數據交換和Java客戶端類調用C# WebService。
下面是滿足Java客戶端類調用的源代碼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); } } } } }
編譯:javac SOAPClient4XG.java
運行的命令格式: java -classpath . SOAPClient4XG
http://localhost/BokeServices/Service1.asmx c:loginReq.xml
http://tempuri.org/UserLoginReq
不過先不要運行上面的命令,先介紹一下命令行的意思,http://localhost/BokeServices/Service1.asmx是C# WebService的地址;
c:loginReq..xml里的內容是Java客戶端類調用WebService方法的xml文件, http://tempuri.org是WebService方法的命名空間,一定要有,否則調用失敗,如果你在C# WebServices中使用了方法默認的命名空間的話,就使用http://tempuri.org,否則要與C#中定義的一致,UserLoginReq是C# WebServices的方法名。注意xml文件中的方法名和參數名是與C# WebServices的方法名、參數名是一一對應的(參數順序是可以顛倒的)。
我先介紹一個簡單的例子(c:loginReq.xml),這個xml文件調用了遠程C# WebService的UserLoginReq方法,并帶UserAcc(用戶名)和UserPwd(口令)兩個參數,調用成功后C#會自動返回一個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〉
現在看一下C# WebServices的UserLoginReq的方法的定義:
public struct UserLoginResp { public string UserAcc; public int Result; } [WebMethod] public UserLoginResp UserLoginReq(string UserAcc, string UserPwd,int ReqFrom) { … }
注意結構UserLoginResp,C# WebServices返回SOAP信息時會自動將UserLoginResp結構轉換成xml的格式。
用此類做xml rpc server 的客戶端也很簡單,下文是一個客戶端rpc.xml文件,調用了xml rpc server 端實現的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〉
調用命令的格式:
java -classpath %CLASSPATH%;. SOAPClient4XG.
http://192.168.25.97:8080/BokeeXmlRpc/xml-rpc rpc.xml
對比調用C# WebServices的命令行,可以看出調用xml rpc server的命令行少一個方法名參數。http://192.168.25.97:8080/BokeeXmlRpc/xml-rpc 是提供xml rpc 調用的server端servlet地址。
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