1
/** *//**
2
* 取得当前执行程序使用的classpath
3 * @author snoics
4 * @param theclass Class
5 * @param path "" or "/"
6 * @param encoding 如果encoding==null将默认使用utf-8进行解码
7 * @return String
8
*/
9 public static String getRealPath(Class theclass,String path,String encoding)
{
10 String realpath="";
11
if(encoding==null) {
12 encoding="utf-8";
13
}
//如果path==null则把它设置为""
14 path=getString(path);
15 if(path.equals("")) {
16 path="/";
17 }
18 String jarflag="";
19 String classflag="";
20
21 String window_jarflag="jar:file:/";
22 String window_classfalg="file:/";
23
24 String other_jarflag="jar:file:";
25 String other_classflag="file:";
26
27 String endstring="!";
28 String systemtype="";
29
30 String systemtype_windows="WINDOWS";
31
32 String pachnamestringendstring="package ";
33
34 String packagestring=theclass.getPackage().toString();
35
36 packagestring=packagestring.substring(pachnamestringendstring.length());
37 packagestring=getSpecialReplaceString(packagestring,".","/");
38
39 String packagestringtemp=packagestring+"/";
40
41 realpath=theclass.getResource(path).toString();
42 try{
43 realpath=URLDecoder.decode(realpath,encoding);
44 }catch(Exception e){
45 e.printStackTrace() ;
46 }
47
48 systemtype=System.getProperty("os.name").toUpperCase().trim();
49
50 if(systemtype.startsWith(systemtype_windows)){
51 jarflag=window_jarflag;
52 classflag=window_classfalg;
53 }else{
54 jarflag=other_jarflag;
55 classflag=other_classflag;
56 }
57
58 if(realpath.length()>=jarflag.length()){
59 String flagstring="";
60 flagstring=realpath.substring(0,jarflag.length());
61 if(!flagstring.equals(jarflag)){
62 flagstring=realpath.substring(0,classflag.length());
63 }
64 if(flagstring.equals(jarflag)){
65 realpath=realpath.substring(jarflag.length());
//取得realpath中从开始到最后一个endstring字符串之前的
66 realpath=StringClass.getPreString(realpath,endstring);
//取得realpath中从开始到最后一个"/"字符串之前的
67 realpath=StringClass.getPreString(realpath,"/")+"/";
68 }else{
69 realpath=realpath.substring(classflag.length());
70 if(realpath.length()>packagestringtemp.length()) {
71 String subrelapath=realpath.substring(realpath.length()-packagestringtemp.length());
72 if(subrelapath.equals(packagestringtemp)){
//取得realpath中从开始到最后一个packagestring字符串之前的
73 realpath=StringClass.getPreString(realpath,packagestring);
74 }
75 }
76 }
77 }else if((realpath.length()>=classflag.length())&&(realpath.length()<jarflag.length())){
78 realpath=realpath.substring(classflag.length());
79 if(realpath.length()>packagestringtemp.length()) {
80 String subrelapath=realpath.substring(realpath.length()-packagestringtemp.length());
81 if(subrelapath.equals(packagestringtemp)){
//取得realpath中从开始到最后一个packagestring字符串之前的
82 realpath=StringClass.getPreString(realpath,packagestring);
83 }
84 }
85 }
//返回经过格式化的路径,把"\"全部替换为"/"
86 return StringClass.getFormatPath(realpath);
87 }
88
posted on 2005-11-11 09:06
snoics 阅读(737)
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学习 . 感悟