parent
b9ac28edda
commit
69373b2e26
Binary file not shown.
Binary file not shown.
@ -0,0 +1,123 @@
|
||||
package servlet.admin;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.io.PrintWriter;
|
||||
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 com.mysql.jdbc.Connection;
|
||||
|
||||
import javabean.Base;
|
||||
import net.sf.json.JSONArray;
|
||||
import net.sf.json.JSONObject;
|
||||
|
||||
/**
|
||||
* Servlet implementation class CardList
|
||||
*/
|
||||
@WebServlet("/admin/cardList")
|
||||
public class CardList extends HttpServlet {
|
||||
@Override
|
||||
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
|
||||
resp.setContentType("application/json; charset:utf8");
|
||||
// 接收参数
|
||||
String limit = req.getParameter("limit");
|
||||
String page = req.getParameter("page");
|
||||
String condition = (String) req.getParameter("condition");
|
||||
String conditionValue = (String) req.getParameter("conditionValue");
|
||||
System.out.println("condition:--" +condition+ " "+ conditionValue);
|
||||
String where = null; // 无限制条件
|
||||
if(page == null) {
|
||||
page = "1";
|
||||
}
|
||||
if(limit == null) {
|
||||
limit = "10";
|
||||
}
|
||||
System.out.println(where);
|
||||
Connection connection = null;
|
||||
PreparedStatement pstmt = null;
|
||||
ResultSet resultSet = null;
|
||||
int code = 1;
|
||||
String msg = "error";
|
||||
int count = 0;
|
||||
String sql = "";
|
||||
//String countSql = ""
|
||||
JSONObject jsonObject = new JSONObject();
|
||||
JSONArray jsonArray = new JSONArray();
|
||||
JSONObject jsonResult = new JSONObject();
|
||||
try {
|
||||
// 获取数据
|
||||
connection = (Connection) Base.getConnection();
|
||||
sql = "select id,password,reader,rule_id,status from borrow_card";
|
||||
// where
|
||||
if(condition != null && conditionValue != null && !condition.isEmpty() && !conditionValue.isEmpty()) {
|
||||
where = " where "+ condition +" like '%" +conditionValue +"%' ";
|
||||
sql = sql+where;
|
||||
}
|
||||
System.out.println(sql);
|
||||
// 分页
|
||||
sql +=" limit ?,?";
|
||||
pstmt = connection.prepareStatement(sql);
|
||||
try {
|
||||
System.out.println((Integer.parseInt(page)-1) * Integer.parseInt(limit));
|
||||
System.out.println(Integer.parseInt(limit));
|
||||
pstmt.setInt(1, (Integer.parseInt(page)-1) * Integer.parseInt(limit) );
|
||||
pstmt.setInt(2, Integer.parseInt(limit));
|
||||
} catch (NumberFormatException | SQLException e1) {
|
||||
System.out.println("?????sqlerror");
|
||||
}
|
||||
resultSet = pstmt.executeQuery();
|
||||
while(resultSet.next()) {
|
||||
jsonObject.put("id", resultSet.getString("id"));
|
||||
jsonObject.put("password", resultSet.getString("password"));
|
||||
jsonObject.put("reader", resultSet.getString("reader"));
|
||||
jsonObject.put("rule_id", resultSet.getString("rule_id"));
|
||||
jsonObject.put("status", resultSet.getString("status"));
|
||||
jsonArray.add(jsonObject);
|
||||
}
|
||||
// 获取总数
|
||||
sql = "select count(*) as count from borrow_card ";
|
||||
// 有限制
|
||||
if(where!=null) {
|
||||
sql = sql+where;
|
||||
}
|
||||
pstmt = connection.prepareStatement(sql);
|
||||
resultSet = pstmt.executeQuery();
|
||||
if(resultSet.next()) {
|
||||
count = resultSet.getInt("count");
|
||||
}
|
||||
|
||||
if(!jsonArray.isEmpty()) {
|
||||
code = 0;
|
||||
msg = "成功";
|
||||
}
|
||||
} 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) {
|
||||
// TODO Auto-generated catch block
|
||||
msg = "关闭失败";
|
||||
}
|
||||
}
|
||||
jsonResult.put("code", code);
|
||||
jsonResult.put("count", count);
|
||||
jsonResult.put("msg", msg);
|
||||
jsonResult.put("data", jsonArray.toString());
|
||||
System.out.println(jsonResult.toString());
|
||||
PrintWriter out = resp.getWriter();
|
||||
out.print(jsonResult.toString());
|
||||
//out.print("{\"code\":0,\"msg\":\"\",\"count\":\"234\",\"data\":[{\"id\":\"1\",\"password\":\"23442\",\"reader\":\"minm\",\"rule_id\":\"1\",\"status\":\"2\"}]}");
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in new issue