我只是想从表 tblUser 中提取数据，并且在下面的代码中使用足够的格式 isActive 来显示红色和正常重量，如果它显示“否”，绿色和粗体显示是。所有结果都以绿色和粗体显示。
<%@ page import="com.mysql.*" %>
<%@ page import="java.sql.*" %>
<html>
<body>
<div id="content">
<p>Displaying table contents: </p>
<table border="0" cellpadding="10">
<thead>
<tr>
<th>User ID</th>
<th>First Name:</th>
<th>Last Name:</th>
<th>Notes</th>
<th><b>Is Active?</b></th>
</tr>
</thead>
<tbody>
<%
Class.forName("com.mysql.jdbc.Driver");
Connection conn = null;
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/raa", "root", "root");
Statement stmt = null;
stmt = conn.createStatement();
String query = "SELECT userID, Group_id, role, fname, lname, email, password, phone, notes, case when isActive = 1 then 'Yes' else 'no' end isActive FROM raa.tblUser";
ResultSet rs = null;
rs = stmt.executeQuery(query);
while(rs.next()){
%>
<tr>
<%
int userid = rs.getInt("userid");
String fname = rs.getString("fname");
String lname = rs.getString("lname");
String notes = rs.getString("notes");
String isActive = rs.getString("isActive");
%>
<td><%=userid %></td>
<td><%=fname %></td>
<td><%=lname %></td>
<td><%=notes %></td>
<%
String activeClass = "";
String activeBold = "";
if(isActive == "0"){
activeClass = "red";
activeBold = "normal";
}
else{
activeClass = "green";
activeBold = "bold";
}
%>
<td style="color: <%=activeClass%>; font-weight: <%=activeBold %>;"><%=isActive%></td>
</tr>
<%
}
%>
</tbody>
</table>
</div>
</body>
</html>
结果页面如下:
最佳答案
你必须在对象比较中使用 equals ... isActive.equals("0") 或 "0".equals(isActive)
<%
String activeClass = "";
String activeBold = "";
if("0".equals(isActive)){
activeClass = "red";
activeBold = "normal";
}
else{
activeClass = "green";
activeBold = "bold";
}
%>
关于java - JSP/MySQL - 格式化不，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44204552/