You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.3 KiB
85 lines
2.3 KiB
package servlet.admin;
|
|
|
|
import java.io.IOException;
|
|
import java.io.PrintWriter;
|
|
import java.sql.Connection;
|
|
import java.sql.PreparedStatement;
|
|
import java.sql.ResultSet;
|
|
import java.sql.SQLException;
|
|
|
|
import javax.servlet.ServletException;
|
|
import javax.servlet.annotation.WebServlet;
|
|
import javax.servlet.http.HttpServlet;
|
|
import javax.servlet.http.HttpServletRequest;
|
|
import javax.servlet.http.HttpServletResponse;
|
|
|
|
import javabean.Base;
|
|
import javabean.DateTime;
|
|
import javabean.Util;
|
|
import net.sf.json.JSONArray;
|
|
import net.sf.json.JSONObject;
|
|
|
|
@WebServlet("/admin/libraryData")
|
|
public class LibraryData extends HttpServlet {
|
|
private static final long serialVersionUID = 1L;
|
|
|
|
@Override
|
|
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
|
|
resp.setContentType("application/json; charset:utf8");
|
|
// 准备参数
|
|
Connection connection = null;
|
|
PreparedStatement pstmt = null;
|
|
ResultSet resultSet = null;
|
|
String sql = "";
|
|
JSONObject jsonObject = new JSONObject();
|
|
JSONArray jsonData = new JSONArray();
|
|
JSONArray jsonDays = new JSONArray();
|
|
// 返回参数
|
|
int code = 1;
|
|
String msg = "error";
|
|
int count = 0;
|
|
PrintWriter out = resp.getWriter();
|
|
|
|
// 开始查询
|
|
try {
|
|
connection = Base.getConnection();
|
|
int i = 30;
|
|
// 获取30天
|
|
while(i!=0) {
|
|
i--;
|
|
sql = "select count(*) as count from borrow_books where date_format(borrow_date,'%Y-%m-%d')=? order by id desc";
|
|
String date = DateTime.showDate(-i); // 设置日期
|
|
String md = DateTime.showMD(-i);
|
|
pstmt = connection.prepareStatement(sql);
|
|
pstmt.setString(1,date);
|
|
resultSet = pstmt.executeQuery();
|
|
while(resultSet.next()) {
|
|
jsonData.add(resultSet.getString("count"));
|
|
jsonDays.add(md);
|
|
}
|
|
}
|
|
jsonObject.put("data", jsonData);
|
|
jsonObject.put("days", jsonDays);
|
|
if(!jsonObject.isEmpty()) {
|
|
code = 0;
|
|
msg = "查询成功";
|
|
}else {
|
|
msg = "数据为空";
|
|
}
|
|
} catch (ClassNotFoundException e) {
|
|
msg = "没找到";
|
|
e.printStackTrace();
|
|
} catch (SQLException e) {
|
|
msg = "sql错误";
|
|
}finally {
|
|
try {
|
|
Base.closeResource(connection, pstmt, resultSet);
|
|
} catch (SQLException e) {
|
|
msg = "关闭失败";
|
|
}
|
|
}
|
|
out.print( Util.jsonResponse(code, msg, jsonObject.toString()) );
|
|
}
|
|
|
|
}
|