class ClientTreeReader {
private StringBuffer sbTree = new StringBuffer();
public String read() {
Connection conn = null;
try {
conn = DBUtil.getConnection();
read(conn, 0, 0);
} catch (Exception e) {
e.printStackTrace();
} finally {
DBUtil.closeAll(null, null, conn);
}
return sbTree.toString();
}
private void read(Connection conn, int id, int level)
throws SQLException {
String sql = "select * from t_client where pid=?";
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
pstmt = conn.prepareStatement(sql);
pstmt.setInt(1, id);
rs = pstmt.executeQuery();
while (rs.next()) {
//加入div标签
sbTree.append("<div>");
sbTree.append("\n");
//加缩进
for (int i = 0; i < level; i++) {
sbTree.append("<img src=\"../images/white.gif\">");
sbTree.append("\n");
}
//如果不是叶子节点,递归查询子节点
if (Constant.NO.equals(rs.getString("is_leaf"))) {
//加入加号图片
sbTree.append("<img alt=\"展开\" style=\"cursor:hand;\" onClick=\"display('" + rs.getInt("id")
+ "');\" id=\"img" + rs.getInt("id") + "\" src=\"../images/plus.gif\">");
sbTree.append("\n");
//加入关闭的文件夹图片
sbTree.append("<img id=\"im" + rs.getInt("id") + "\" src=\"../images/closedfold.gif\">");
sbTree.append("\n");
//加入a标签
sbTree.append("<a href=\"client_node_crud.jsp?id=" + rs.getInt("id") + "\" target=\"clientDispAreaFrame\">");
//拼接字符串内容
sbTree.append(rs.getString("name")).append("<br>");
//a结束标签
sbTree.append("</a>");
sbTree.append("\n");
//加入隐藏的div标签
sbTree.append("<div id=div" + rs.getInt("id") + " style='display: none;'>");
sbTree.append("\n");
read(conn, rs.getInt("id"), level + 1);
} else {
//加入减号图片和打开的文件夹图片
sbTree.append("<img src=\"../images/minus.gif\">")
.append("<img src=\"../images/openfold.gif\">");
sbTree.append("\n");
//加入a标签
if (Constant.NO.equals(rs.getString("is_client"))) {
//如果不是分销商,链接地址为client_node_crud.html
sbTree.append("<a href=\"client_node_crud.jsp?id=" + rs.getInt("id") + "\" target=\"clientDispAreaFrame\">");
} else {
//如果不是分销商,链接地址为client_crud.html
sbTree.append("<a href=\"client_crud.jsp?id=" + rs.getInt("id") + "\" target=\"clientDispAreaFrame\">");
}
//拼接字符串内容
sbTree.append(rs.getString("name")).append("<br>");
//a结束标签
sbTree.append("</a>");
sbTree.append("\n");
//加入隐藏div标签
sbTree.append("<div id=div" + rs.getInt("id") + " style='display: none;'>");
sbTree.append("\n");
}
//div结束标签
sbTree.append("</div></div>\n");
}
} finally {
DBUtil.closeAll(rs, pstmt, null);
}
}
public static void main(String[] args) {
ClientTreeReader ctr = new ClientTreeReader();
System.out.println(ctr.read());
}
}