众所周知,微软公司正在全力打造.Net,并预备将它作为向其他公司进攻的砝码,来保证其在业界的技术领先地位。 其实,微软公司在许多领域都处于领导地位,一些优秀的产品让其他公司难望其项颈,如操作系统
,办公软件等基于Windows平台的一些优秀的应用软件(如:IE)。但在美国,许多大公司非常反感微软一手包办的作风,也对微软的不放心,对其产品的安全性的担忧,所以大部分都用Unix 和Linux等非Windows平台,许多服务器也是用的非Windows平台,或是用自己开发的操作系统。但Windows的方便性和界面友好性及众多的工具也是其他平台难以比拟的(应该没什么争议的),而Unix和Linux平台似乎只适合一些专家。能不能找到一个桥梁将Windows产品同其他平台联系起来呢?目前有www.stryon.com公司正在实现这一点,开发了iNet,将Microsoft.Net转换成Java代码来实现跨平台。
例如用Visual Studio.Net开发了一个Web Service程序:
testClient.asmx:
using System;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Services.Description;
using System.XML;
using System.Xml.Schema;
using System.Xml.Serialization;
using System.Data;
public class testClient : WebService {
[WebMethod()]
public int testInt(int a,int b){
return a+b;
}
[WebMethod()]
public strUCt1 testStruct(struct1 a){
return a;
}
[WebMethod()]
public int[] testIntArr(int[] a){
return a;
}
[WebMethod()]
public struct1[] testStrArr(struct1[] a){
return a;
}
[WebMethod()]
public struct1 testStructAndArr(struct1 a,struct1[] b){
return a;
}
[WebMethod()]
public struct1[][] testStrManyArr(struct1[][] a){
return a;
}
}
public class struct1:parent{
public int i=1;
public string j="ok";
public struct2 s2;
}
public class parent{
public String p;
}
public class struct2{
public String sField;
}
我们可以用il2java 工具转换成java代码(il2java工具可以在www.stryon.com 网站上下载,包括在iNet产品中),如:il2java http://localhost/testClient/testClient.asmx c:\temp,运行这个命令,将在c盘temp目录下产生 testClient.java 和testClient_Info.java:
testClient.java:
import system.*;
import system.Reflection.*;
import system.Web.Services.*;
public class testClient extends WebService{
public int testInt(int a, int b){
return a+b;
}
public struct1 testStruct(struct1 a){
return a;
}
public int[] testIntArr(int[] a){
return a;
}
public struct1[] testStrArr(struct1[] a){
return a;
}
public struct1 testStructAndArr(struct1 a, struct1[] b){
return a;
}
public struct1[][] testStrManyArr(struct1[][] a){
return a;
}
public testClient(){
super();
}
}
用来指明Web Service中有哪些Web方法,以便被客户调用;
testClient_Info.java:
import system.*;
import system.Reflection.*;
import system.Web.Services.*;
public class testClient_Info implements IMetaData{
public void fillType(Type t){
long value = TypeAttributes.AnsiClass.value__ TypeAttributes.AutoLayout.value__ TypeAttributes.BeforeFieldInit.value__ TypeAttributes.Class.value__ TypeAttributes.Public.value__;
TypeAttributes attributes = new TypeAttributes(value);
t.set_Attributes(attributes);
}
public FieldInfo[] GetFieldsImpl(Type t){
return new FieldInfo[0];
}
public ConstructorInfo[] GetConstructorsImpl(Type t){
long value = 0;
ConstructorInfo ctor = null;
ParameterInfo param = null;
MethodAttributes attributes = null;
ParameterAttributes paramAttrs = null;
java.util.Vector ctorVec = new java.util.Vector();
// public testClient();
value = MethodAttributes.HideBySig.value__ MethodAttributes.Public.value__ MethodAttributes.ReuseSlot.value__ MethodAttributes.RTSpecialName.value__ MethodAttributes.SpecialName.value__;
attributes = new MethodAttributes(value);
ctor = new ConstructorInfo(t);
ctorVec.addElement(ctor);
ctor.set_Attributes(attributes);
ctor.set_Name("testClient");
ctor.set_BindingFlags(BindingFlags.Public.value__ BindingFlags.Instance.value__);
Object[] objs = ctorVec.toArray();
ctorVec = null;
ConstructorInfo[] ctors = new ConstructorInfo[objs.length];
java.lang.System.arraycopy(objs, 0, ctors, 0, objs.length);
return ctors;
}
public MethodInfo[] GetMethodsImpl(Type t){
long value = 0;
MethodInfo method = null;
ParameterInfo param = null;
MethodAttributes attributes = null;
ParameterAttributes paramAttrs = null;
java.util.Vector mdVec = new java.util.Vector();
// public int testInt(int a, int b);
value = MethodAttributes.HideBySig.value__ MethodAttributes.Public.value__ MethodAttributes.ReuseSlot.value__;
attributes = new MethodAttributes(value);
method = new MethodInfo(t);
mdVec.addElement(method);
method.set_Attributes(attributes);
method.set_Name("testInt");
method.set_ReturnType("System.Int32");
method.set_BindingFlags(BindingFlags.Public.value__ BindingFlags.Instance.value__);
value = 0;
paramAttrs = new ParameterAttributes(value);
param = new ParameterInfo(method);
param.set_Attributes(paramAttrs);
param.set_Name("a");
param.set_ParamType("System.Int32");
method.addParameterInfo(param);
value = 0;
paramAttrs = new ParameterAttributes(value);
param = new ParameterInfo(method);
param.set_Attributes(paramAttrs);
param.set_Name("b");
param.set_ParamType("System.Int32");
method.addParameterInfo(param);
// public struct1 testStruct(struct1 a);
value = MethodAttributes.HideBySig.value__ MethodAttributes.Public.value__ MethodAttributes.ReuseSlot.value__;
attributes = new MethodAttributes(value);
method = new MethodInfo(t);
mdVec.addElement(method);
method.set_Attributes(attributes);
method.set_Name("testStruct");
method.set_ReturnType("struct1");
method.set_BindingFlags(BindingFlags.Public.value__ BindingFlags.Instance.value__);
value = 0;