用JAVA连接SQL实现插入数据

直接由代码来决定插入的数据。

<%@ page language="java" contentType="text/html; charset=UTF-8" import="java.sql.*"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>利用PreparedStatement对象添加一条记录页面</title>
</head>
<body>
<% 		String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
//加载JDBC驱动
		String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=zero";
//连接服务器和数据库
		String userName = "sa"; // 默认用户名
		String userPwd = "123456"; // 密码
		Connection dbConn = null;
		try {
			Class.forName(driverName);
			dbConn = DriverManager.getConnection(dbURL, userName, userPwd);
		//	System.out.println("Connection Successful!");
			// 如果连接成功 控制台输出Connection Successful!
		} catch (Exception e) {
			e.printStackTrace();
		//	System.out.println("连接失败");
		}
		
		String sql="Insert into stu_info(id,name,sex,age,weight,hight) values(?,?,?,?,?,?)";
		PreparedStatement pstmt=dbConn.prepareStatement(sql);
		pstmt.setInt(1, 16);
		pstmt.setString(2, "张三");
		pstmt.setString(3, "男");
		pstmt.setInt(4, 20);
		pstmt.setFloat(5,70);
		pstmt.setFloat(6,175);
		int n=pstmt.executeUpdate();
		if(n==1){%> 数据插入成功！<br> <%}
		else{%> 数据插入失败！<br> <%}
		if(pstmt!=null) {pstmt.close();}
		if(dbConn!=null) {dbConn.close();}
		%>
</body>
</html>

可以在网页自由插入数据。

提交页面。

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>提交页面</title>
</head>
<body>
<form action="insert_stu_2.jsp" method="post">
	<table border="0" width="238" height=252"">
		<tr><td>学号</td><td><input type="text" name="id"></td></tr>
		<tr><td>姓名</td><td><input type="text" name="name"></td></tr>
		<tr><td>性别</td><td><input type="text" name="sex"></td></tr>
		<tr><td>年龄</td><td><input type="text" name="age"></td></tr>
		<tr><td>体重</td><td><input type="text" name="weight"></td></tr>
		<tr><td>身高</td><td><input type="text" name="hight"></td></tr>
		<tr align="center">
			<td colspan="2">
				<input type="submit" value="提 交">&nbsp;&nbsp;&nbsp;<!-- 表示空格，因为表格中如果是手打的空格会合并为一个 -->
				<input type="reset" value="取 消">
				</td>
				</tr>
	</table>
</form>
</body>
</html>

接收数据页面

<%@ page language="java" contentType="text/html; charset=UTF-8" import="java.sql.*"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>利用PreparedStatement添加一条记录</title>
</head>
<body>
<% 		String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
//加载JDBC驱动
		String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=zero";
//连接服务器和数据库
		String userName = "sa"; // 默认用户名
		String userPwd = "123456"; // 密码
		Connection dbConn = null;
		try {
			Class.forName(driverName);
			dbConn = DriverManager.getConnection(dbURL, userName, userPwd);
		//	System.out.println("Connection Successful!");
			// 如果连接成功 控制台输出Connection Successful!
		} catch (Exception e) {
			e.printStackTrace();
		//	System.out.println("连接失败");
		}
		String sql="Insert into stu_info(id,name,sex,age,weight,hight) values(?,?,?,?,?,?)";
		PreparedStatement pstmt=dbConn.prepareStatement(sql);
		request.setCharacterEncoding("UTF-8");//设置字符编码，避免出现乱码
		int id=Integer.parseInt(request.getParameter("id"));
		String name=request.getParameter("name");
		String sex=request.getParameter("sex");
		int age=Integer.parseInt(request.getParameter("age"));
		float weight=Float.parseFloat(request.getParameter("weight"));
		float hight=Float.parseFloat(request.getParameter("hight"));
		
		pstmt.setInt(1,id);//这里不能有空格，虽然这里并不会报错，但运行会出现错误500提示。
		pstmt.setString(2,name);
		pstmt.setString(3,sex);
		pstmt.setInt(4,age);
		pstmt.setFloat(5,weight);
		pstmt.setFloat(6,hight);
		int n=pstmt.executeUpdate();
		if(n==1){%> 数据插入成功！<br> <%}
		else{%> 数据插入失败！<br> <%}
		if(pstmt!=null) {pstmt.close();}
		if(dbConn!=null) {dbConn.close();}
%>
</body>
</html>

用JAVA连接SQL实现插入数据

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