1 add.jsp代码
<%@ page language="java" pageEncoding="UTF-8"%>
<HTML>
<HEAD>
<meta http-equiv="Content-Language" content="zh-cn">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<LINK href="${pageContext.request.contextPath}/css/Style1.css" type="text/css" rel="stylesheet">
<script type="text/javascript" src="${pageContext.request.contextPath }/js/jquery-1.11.3.min.js"></script>
<script type="text/javascript">
$(function(){
//页面加载完毕后异步获得分类数据
$.post(
"${pageContext.request.contextPath }/admin?method=findAllCategory",
function(data){
//[{"cid":"xxx","cname":"xxx"},{},{}]
//拼接多个<option value=""></option>
var content="";
for(var i=0;i<data.length;i++){
content += "<option value='"+data[i].cid+"'>"+data[i].cname+"</option>";
}
$("#cid").html(content);
},
"json"
);
});
</script>
</HEAD>
<body>
<!-- -->
<form id="userAction_save_do" name="Form1" action="${pageContext.request.contextPath}/adminProduct_save.action" method="post" enctype="multipart/form-data">
<table cellSpacing="1" cellPadding="5" width="100%" align="center" bgColor="#eeeeee" style="border: 1px solid #8ba7e3" border="0">
<tr>
<td class="ta_01" align="center" bgColor="#afd1f3" colSpan="4"
height="26">
<strong><STRONG>添加商品</STRONG>
</strong>
</td>
</tr>
<tr>
<td width="18%" align="center" bgColor="#f5fafe" class="ta_01">
商品名称：
</td>
<td class="ta_01" bgColor="#ffffff">
<input type="text" name="pname" value="" id="userAction_save_do_logonName" class="bg"/>
</td>
<td width="18%" align="center" bgColor="#f5fafe" class="ta_01">
是否热门：
</td>
<td class="ta_01" bgColor="#ffffff">
<select name="is_hot">
<option value="1">是</option>
<option value="0">否</option>
</select>
</td>
</tr>
<tr>
<td width="18%" align="center" bgColor="#f5fafe" class="ta_01">
市场价格：
</td>
<td class="ta_01" bgColor="#ffffff">
<input type="text" name="market_price" value="" id="userAction_save_do_logonName" class="bg"/>
</td>
<td width="18%" align="center" bgColor="#f5fafe" class="ta_01">
商城价格：
</td>
<td class="ta_01" bgColor="#ffffff">
<input type="text" name="shop_price" value="" id="userAction_save_do_logonName" class="bg"/>
</td>
</tr>
<tr>
<td width="18%" align="center" bgColor="#f5fafe" class="ta_01">
商品图片：
</td>
<td class="ta_01" bgColor="#ffffff" colspan="3">
<input type="file" name="upload" />
</td>
</tr>
<tr>
<td width="18%" align="center" bgColor="#f5fafe" class="ta_01">
所属分类：
</td>
<td class="ta_01" bgColor="#ffffff" colspan="3">
<select id="cid" name="cid">
</select>
</td>
</tr>
<tr>
<td width="18%" align="center" bgColor="#f5fafe" class="ta_01">
商品描述：
</td>
<td class="ta_01" bgColor="#ffffff" colspan="3">
<textarea name="pdesc" rows="5" cols="30"></textarea>
</td>
</tr>
<tr>
<td class="ta_01" style="WIDTH: 100%" align="center"
bgColor="#f5fafe" colSpan="4">
<button type="submit" id="userAction_save_do_submit" value="确定" class="button_ok">
确定
</button>
<FONT face="宋体"> </FONT>
<button type="reset" value="重置" class="button_cancel">重置</button>
<FONT face="宋体"> </FONT>
<INPUT class="button_ok" type="button" onclick="history.go(-1)" value="返回"/>
<span id="Label1"></span>
</td>
</tr>
</table>
</form>
</body>
</HTML>
2 AdminServlet代码
package www.test.web.servlet;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.gson.Gson;
import www.test.domain.Category;
import www.test.service.AdminService;
public class AdminServlet extends BaseServlet {
// 1 页面加载完毕后异步获得分类数据
public void findAllCategory(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//提供一个List<Category>转成json字符串
AdminService service = new AdminService();
List<Category> categoryList = service.findAllCategory();
//将List<Category>转换成json格式
Gson gson = new Gson();
String json = gson.toJson(categoryList);
//解决乱码并写出
response.setContentType("text/html;charset=UTF-8");
response.getWriter().write(json);
}
}
3 AdminService代码
package www.test.service;
import java.sql.SQLException;
import java.util.List;
import www.test.dao.AdminDao;
import www.test.domain.Category;
public class AdminService {
// 获取分类
public List<Category> findAllCategory() {
AdminDao dao = new AdminDao();
try {
return dao.findAllCategory();
} catch (SQLException e) {
e.printStackTrace();
return null;
}
}
}
4 AdminDao代码
package www.test.dao;
import java.sql.SQLException;
import java.util.List;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import www.test.domain.Category;
import www.test.utils.C3P0Utils;
public class AdminDao {
// 获取分类
public List<Category> findAllCategory() throws SQLException {
QueryRunner qr = new QueryRunner(C3P0Utils.getDataSource());
String sql = "select * from category";
return qr.query(sql, new BeanListHandler<Category>(Category.class));
}
}
