众所周知,微软公司正在全力打造.net,并准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:
<%@ webservice language="c#" class="testclient" %>
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;
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