[SampleSource] ClassInfo.jsp

목적 : 해당 클래스가 정상적인 경로의 클래스를 로딩했는지 알아볼때 사용.
 
<%@ page import="java.util.*"%> 
<%@ page import="java.lang.*"%> 
<%@ page import="java.lang.reflect.*"%> 
<%@ page import="java.util.regex.*"%> 
<%@ page import="java.security.*"%>
<%! 
    public String replace(String s, String source, String target) { 
        String ret = s; 
        int idx = ret.indexOf(source); 
        while(idx > -1) { 
            ret = ret.substring(0, idx) + target + ret.substring(idx+source.length()); 
            idx = ret.indexOf(source, idx+target.length()); 
        } 
        return ret; 
    }
    public String linkClass(String inputStr) { 
        String result = inputStr; 
        String patternStr = "([a-zA-Z0-9]{1,}\\.){1,}[a-zA-Z0-9]{1,}[@|$][a-zA-Z0-9]{1,}]{0,1}"; 
        Pattern pattern = Pattern.compile(patternStr); 
        Matcher matcher = pattern.matcher(inputStr); 
        String cname = null; 
        int cnt = 0; 
        while(matcher.find()) { 
            cname = matcher.group(); 
            if(cname.lastIndexOf('@') > 0) { 
                cname = cname.substring(0, cname.lastIndexOf('@')); 
            } 
            String rep = "<a href='?classname="+cname+"'>"+cname+"</a>"; 
            result = replace(result, cname, rep); 
            cnt++; 
        }
        if(cnt == 0) { 
            patternStr = "([a-zA-Z0-9]{1,}\\.){1,}[a-zA-Z0-9]{1,}"; 
            pattern = Pattern.compile(patternStr); 
            matcher = pattern.matcher(result); 
            while(matcher.find()) { 
                cname = matcher.group(); 
                String rep = "<a href='?classname="+cname+"'>"+cname+"</a>"; 
                result = replace(result, cname, rep); 
            } 
        }
        return result; 
    }
    public String linkClassInfo(String inputStr) { 
        String result = FQNtoType(inputStr); 
        result = linkClass(result); 
        return (result==null||result.equals(""))?"&nbsp;":result; 
    }
    public String checkLocation(String inputStr) { 
        int idx = inputStr.lastIndexOf(':'); 
        if(idx > -1) { 
            inputStr = inputStr.substring(idx-1); 
        } 
        return inputStr; 
    }
    public String FQNtoType(String fqn) { 
        String retType = null; 
        String temp = fqn; 
        boolean isArr = false; 
        int arrCnt = 0; 
        while(temp.startsWith("[")) { 
            isArr = true; 
            temp = temp.substring(1); 
            arrCnt++; 
        } 
        if(isArr) { 
            char t = temp.charAt(0); 
            switch(t) { 
                case 'B' : 
                    retType = "byte"; break; 
                case 'C' : 
                    retType = "char"; break; 
                case 'D' : 
                    retType = "double"; break; 
                case 'F' : 
                    retType = "float"; break; 
                case 'I' : 
                    retType = "int"; break; 
                case 'J' : 
                    retType = "long"; break; 
                case 'S' : 
                    retType = "short"; break; 
                case 'Z' : 
                    retType = "boolean"; break; 
                case 'L' : 
                    retType = temp.substring(1, temp.indexOf(';',1)); break; 
            } 
        } 
        if(retType == null) { 
            return fqn; 
        } else { 
            if(isArr) { 
                for(int i=0; i<arrCnt; i++) { 
                    retType += "[]"; 
                } 
            } 
            return retType; 
        } 
    }
    public String getNotFoundMessage(String className) { 
        return "<br><i><b>can't find</b> the class '<font color=red>" + className + "</font>' in the classloader.<br>"; 
    }
    String pname[] = { 
        "JEUS:", 
        "Log4J:", 
        "OracleJDBCDriver:", 
        "JavaMail:", 
        "LDAP:", 
        "JDom:", 
        "Jaxp:", 
        "WebT:", 
    };
    String cname[] = { 
        "/javax/servlet/http/HttpServlet.class", 
        "/org/apache/log4j/BasicConfigurator.class", 
        "/oracle/jdbc/driver/OracleDriver.class", 
        "/com/sun/mail/pop3/Response.class", 
        "/com/novell/ldap/LDAPConnection.class", 
        "/org/jdom/input/DOMBuilder.class", 
        "/javax/xml/parsers/SAXParser.class", 
        "/tmax/webt/WebtSystem.class" 
    }; 
%>
<html> 
<head> 
    <style type="text/css"> 
        body{font-size:10pt;font-family:Arial, Apple Gothic, Dotum, Gulim} 
        h2{font-size:15pt} 
        h3{font-size:13pt} 
        th{font-size:11pt} 
        td{font-size:10pt} 
        .pt{ font-size:10pt;} 
    </style> 
    <script language="javascript"> 
        function show_hide() { 
            if(property.style.display == "") { 
                property.style.display = "none"; 
            } else { 
                property.style.display = ""; 
            } 
        } 
    </script> 
</head>
<% 
    java.net.URL url = null; 
    String name = null; 
    String value = null;
    String className = request.getParameter("classname"); 
    if(className == null || className.length() == 0) { 
%> 
        <body onLoad='javascript:document.theform.classname.focus()'> 
        <h2><center>[JVM Property & Class Information View]</center></h2> 
        <center>ClassInfo v2.2 ⓒ This is based on open source and modified by YoungDal,Kwon & WonJo,Yoo</center> 
        <hr align=center><br> 
        <h3>[Class Information]</h3> 
        <b><font color=red>INPUT : PackageName/ClassName (without extension)</font></b><br> 
        <b><font color=red>EXAMPLE : javax/servlet/http/HttpServlet</font></b> 
        <form name='theform' method='POST' action=''> 
        <b>Enter name of class : </b><input type='text' name='classname' size=50> 
        <input type='submit' value="Search"> 
        </form> 
        <hr align=center> 
        <input type='button' value="System Property" onClick="show_hide()"> 
        <div id="property" style="display:none"> 
            <h3>[Loaded Package&Class List]</h3> 
<% 
            for (int i = 0; i < cname.length; i++) { 
                url = this.getClass().getResource(cname[i]); 
                if (url == null) { 
                    out.println("<b>" + pname[i] + "</b>(" + cname[i] + ") => Not Found"); 
                } else { 
                    out.println("<b>" + pname[i] + "</b>(" + cname[i] + ")"); 
                    out.println(" => [" + url.getFile() + "]\n"); 
                } 
                out.println("<br>"); 
            }
%> 
            <br><hr align=center> 
            <h3>[Security Provider List]</h3> 
<% 
            Provider[] providers = Security.getProviders(); 
            for (int i = 0; i < providers.length; i++) { 
                out.println("<b>"); 
                out.println(providers[i].getName()); 
                out.println("</b> : "); 
                out.println(providers[i].getInfo()); 
                out.println("<br>"); 
            } 
%> 
            <br><hr align=center> 
            <h3>[System Property List]</h3> 
<% 
            Properties prop = System.getProperties(); 
            Enumeration enum1 = prop.propertyNames(); 
            while (enum1.hasMoreElements()) { 
                name = (String) enum1.nextElement(); 
                value = (String) prop.get(name); 
                out.println("<b>" + name + "</b>: " + value); 
                out.println("<br>"); 
            } 
%> 
        </div> 
        </body> 
        </html> 
<% 
        return; 
    } 
%>
<body> 
    <h3><a name="classsearch">[Class Method/Field Information]</h3>
<% 
    String save_classname = className;
    if(!className.startsWith("/")) 
        className = "/" + className; 
    className = className.replace('.', '/'); 
    java.net.URL classUrl = getClass().getResource(className + ".class");
    if(classUrl == null) { 
        out.println(getNotFoundMessage(className)); 
    } else { 
        className = save_classname; 
        if(className.startsWith("/")) 
            className = className.substring(1); 
        className = className.replace('/', '.'); 
        Class cls; 
        try { 
            cls = Class.forName(className); 
            ClassLoader cl = cls.getClassLoader(); 
%> 
            <menu> 
                <li>Summary</li><br><br>
                <table border=1 cellspacing=0 width="90%"> 
                <thead> 
                    <tr bgcolor="#CCCCFF"> 
                        <th width=150>Category</th> 
                        <th>Value</th> 
                    </tr> 
                </thead> 
                <tbody> 
                    <tr> 
                        <td align=center>Name</td> 
                        <td align=center><%=className%></td> 
                    </tr> 
                    <tr> 
                        <td align=center>Location</td> 
                        <td align=center><%=checkLocation(classUrl.getFile())%></td> 
                    </tr> 
                    <tr> 
                        <td align=center>ClassLoader</td> 
                        <td align=center><%=(cl==null)?"&nbsp;":linkClassInfo(cl.toString())%></td> 
                    </tr> 
                    <tr> 
                        <td align=center>SuperClass</td> 
                        <td align=center><%=linkClassInfo((cls.getSuperclass()==null)?"&nbsp;":cls.getSuperclass().getName())%></td> 
                    </tr> 
                    <tr> 
                        <td align=center>Interface</td> 
                        <td align=center><%=cls.isInterface()?"Yes":"No"%></td> 
                    </tr> 
                    <tr> 
                        <td align=center>Primitive</td> 
                        <td align=center><%=cls.isPrimitive()?"Yes":"No"%></td> 
                    </tr> 
                </tbody> 
                </table>
                <br><br>
<% 
            if(cl != null) {
                Class[] ifs = cls.getInterfaces(); 
                Constructor[] dcons = cls.getDeclaredConstructors(); 
                Field[] dfls = cls.getDeclaredFields(); 
                Method[] dmtds = cls.getDeclaredMethods(); 
                Class[] dcls = cls.getDeclaredClasses(); 
%>
                <li>Detail</li><br><br>
                <table border=1 cellspacing=0 width="90%"> 
                <thead> 
                    <tr bgcolor="#CCCCFF"> 
                        <th width=150>Category</th> 
                        <th width=250>Type</th> 
                        <th>Detail</th> 
                    </tr> 
                </thead> 
                <tbody> 
                    <tr> 
                        <td align=center rowspan=<%=ifs.length%>>Implemented</td> 
                        <td align=center rowspan=<%=ifs.length%>>N/A</td> 
                        <% 
                            for(int i=0; i<ifs.length; i++) { 
                                if(i > 0) 
                                    out.println("</tr><tr>"); 
                                out.println("<td align=center>" + linkClassInfo(ifs[i].getName()) + "</td>"); 
                            } 
                            if(ifs.length == 0) 
                                out.println("<td align=center>&nbsp;</td>"); 
                        %> 
                    </tr> 
                    <tr> 
                        <td align=center rowspan=<%=dcons.length%>>Constructor</td> 
                        <td align=center rowspan=<%=dcons.length%>>N/A</td> 
                        <% 
                            for(int i=0; i<dcons.length; i++) { 
                                String conStr = dcons[i].getName(); 
                                if(i > 0) 
                                    out.println("</tr><tr>"); 
                                out.println("<td align=center>" + conStr.substring(conStr.lastIndexOf('.')+1) + "("); 
                                Class[] params = dcons[i].getParameterTypes(); 
                                for(int j=0; j<params.length; j++) { 
                                    if(j!=0) out.println(", "); 
                                    out.println(linkClassInfo(params[j].getName())); 
                                } 
                                out.println(")</td>"); 
                            } 
                            if(dcons.length == 0) 
                                out.println("<td align=center>&nbsp;</td>"); 
                        %> 
                    </tr> 
                    <tr> 
                        <td align=center rowspan=<%=dfls.length%>>Field</td> 
                        <% 
                            for(int i=0; i<dfls.length; i++) { 
                                Class type = dfls[i].getType(); 
                                if(i > 0) 
                                    out.println("</tr><tr>"); 
                                out.println("<td align=center>" + linkClassInfo(type.getName()) + "</td>"); 
                                out.println("<td align=center>" + dfls[i].getName() + "</td>"); 
                            } 
                            if(dfls.length == 0) { 
                                out.println("<td align=center>&nbsp;</td>"); 
                                out.println("<td align=center>&nbsp;</td>"); 
                            } 
                        %> 
                    </tr> 
                    <tr> 
                        <td align=center rowspan=<%=dmtds.length%>>Method</td> 
                        <% 
                            for(int i=0; i<dmtds.length; i++) { 
                                Class type = dmtds[i].getReturnType(); 
                                if(i > 0) 
                                    out.println("</tr><tr>"); 
                                out.println("<td align=center>" + linkClassInfo(type.getName()) + "</td>"); 
                                out.println("<td align=center>" + dmtds[i].getName() + "("); 
                                Class[] params = dmtds[i].getParameterTypes(); 
                                for(int j=0; j<params.length; j++) { 
                                    if(j!=0) out.println(", "); 
                                    out.println(linkClassInfo(params[j].getName())); 
                                } 
                                out.println(")</tr>"); 
                            } 
                            if(dmtds.length == 0) { 
                                out.println("<td align=center>&nbsp;</td>"); 
                                out.println("<td align=center>&nbsp;</td>"); 
                            } 
                        %> 
                    </tr> 
                    <tr> 
                        <td align=center rowspan=<%=dcls.length%>>InnerClass</td> 
                        <td align=center rowspan=<%=dcls.length%>>N/A</td> 
                        <% 
                            for(int i=0; i<dcls.length; i++) { 
                                if(i > 0) 
                                    out.println("</tr><tr>"); 
                                out.println("<td align=center>" + linkClassInfo(dcls[i].getName()) + "</td>"); 
                            } 
                            if(dcls.length == 0) 
                                out.println("<td align=center>&nbsp;</td>"); 
                        %> 
                    </tr> 
                </tbody> 
                </table> 
            </menu> 
<% 
            } 
        } catch(NoClassDefFoundError e1) { 
            out.println(getNotFoundMessage(className)); 
            e1.printStackTrace(); 
        } catch(ClassNotFoundException e2) { 
            out.println(getNotFoundMessage(className)); 
            e2.printStackTrace(); 
        } 
    } 
%> 
        <br> 
        <center> 
            <table border="0" cellspacing="0" cellpadding="0" align="center"> 
            <tr> 
                <td align="center"><input type="button" value="back" onClick="javascript:history.back();"></td> 
            </tr> 
            </table> 
        </center>
    </body> 
</html>