本文介绍一个非常实用的Java客户端工具类来调用C# WebServices和apache xml rpc server，这个类的源码是从网上下载的，我在博客网做项目的时候一直使用这个类来调试C# WebServices和MetaWeblog API。顺便在这里也给大家介绍一下C#如何处理此类发送的xml数据。
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WebService调用。
下面是此类的源代码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里的内容是调用的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，关于如何用apache xml rpc技术实现MetalogAPI的帖子将在近期整理发布。
注：上文的左右尖括号为保证正常发贴替换为全角。
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WebService调用。
下面是此类的源代码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里的内容是调用的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，关于如何用apache xml rpc技术实现MetalogAPI的帖子将在近期整理发布。
注：上文的左右尖括号为保证正常发贴替换为全角。
