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各位帮忙看一下，分不够再加

摘要: 各位帮忙看一下，分不够再加

//我想用递归的方法显示产品分类列表，以下是我的类别列表Bean(CatalogTree.class),和jsp页面上
//的一段代码。

/*类别列表Bean*/
package db;
import db.*;
import java.sql.*;
import java.io.*;
public class CatalogTree extends ConnAccess{
public CatalogTree(){
super();
}
public StringBuffer printTree(String treeID,String treeName){
String sql=new String();
StringBuffer catalogTreeBf=new StringBuffer();
int count=treeID.length();
catalogTreeBf=catalogTreeBf.append("

• ");
  for(int i=1;i<=count+3;i++){
  treeID=treeID+"-";
  }
  catalogTreeBf=catalogTreeBf.append(""+treeName+"");
  sql="select * from NoGapSBS_Product_Sort where S_SortID like '"+treeID+"'";
  ResultSet treeRs=executeQuery(sql);
  try{
  while(treeRs.next()){
  treeID=treeRs.getString("S_SortID");
  treeName=treeRs.getString("S_Name");
  catalogTreeBf=catalogTreeBf.append(this.printTree(treeID,treeName).toString());
  }
  }
  catch(SQLException ex){
  System.out.println(ex.getMessage());
  }
  catalogTreeBf=catalogTreeBf.append("

");
return catalogTreeBf;
}
}


/*jsp中部分代码*/
<%
String catalogTree=new String();
StringBuffer catalogTreeBf=new StringBuffer("

• ");
  String treeID=new String();
  String treeName=new String();
  ResultSet treeRs=ConnBean.executeQuery("select * from NoGapSBS_Product_Sort where S_SortID like '___' order by S_OrderID asc");
  try{
  while(treeRs.next()){
  treeID=treeRs.getString("S_SortID");
  treeName=treeRs.getString("S_Name");
  catalogTreeBf.append(""+treeName+"");
  catalogTreeBf=catalogTreeBf.append(CatalogTreeBean.printTree(treeID,treeName).toString());
  catalogTreeBf.append("

");
}
}
catch(SQLException ex){
System.out.print(ex.getMessage());
}
catalogTree=catalogTreeBf.toString();
%>

//运行时出现一大片错误请示，摘了点头下来，望请高手解惑
javax.servlet.ServletException: db.CatalogTree.printTree(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/StringBuffer;

java.lang.NoSuchMethodError: db.CatalogTree.printTree(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/StringBuffer;

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怎么没人理呀，给个链接也好

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printTree()这个方法，传入的类型应该是String,但你传入了String数组。

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