parent
a5284e4a5a
commit
a69f14fad7
@ -0,0 +1 @@
|
||||
{"data":[1,1,2,3,4,5],"days":["3号","4号","5号","前天","昨天","今天"]}
|
||||
File diff suppressed because one or more lines are too long
@ -0,0 +1,84 @@
|
||||
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()) );
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in new issue