Question

jsp中遇到的一个问题！

.........前面省略
<%
String url = "jdbc:mysql://localhost:3306/library?useUnicode=true&characterEncoding=utf8";
try{
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(url,"root","root");
String sql = "SELECT id,name,sex,adr,zhengjian,race,exp,beizhu FROM admin";
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(sql);
String name = rs.getString("name");
stmt.close();
conn.close();
}catch(Exception e){
e.printStackTrace();
}
%>
<table>
<tr>
<td align="right">
编 号：</td><td><input type="text" size="20" value="20124786" disabled="disabled" style="font-size:20px; border-color: #FFF; width:225px"/></td></tr>
<tr>
<td align="right">
姓 名：</td><td><input type="text" size="20" value=<%=name %> disabled="disabled" style="font-size:20px; border-color: #FFF; width:225px"/></td></tr>
..........后面省略

为什么value=<%=name %> 报错

Answer 1

String name="";
try{
name== rs.getString("name");
}catch(Exception e){
e.printStackTrace();
}
你把name 定义在try外面就好了！局部变量范围问题！