json代码驾照考题批量加入MySQL数据库 ps.executeUpdate()永远只能悲催的加一条数据 去掉id主键自增 用foreach循环数据库只能出现一条语句

package com.swift;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.List;

import com.google.gson.Gson;

public class AddAll {
/**
* 将D盘D:\java_JDK\java_date路径下的jzkt.json文件中的json驾照考试代码用Gson解析成root对象
*/
public static void main(String[] args) {
File file = new File("D:\\java_JDK\\java_date", "jzkt.json");
StringBuilder sb = null;
List<Result> list = null;
try {
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file), "utf-8"));
String str = null;
sb = new StringBuilder();
final String LINE_SEPARATOR = System.getProperty("line.separator");
try {
while ((str = br.readLine()) != null) {
sb.append(str);
sb.append(LINE_SEPARATOR);
}
Gson gson = new Gson();
Root root = gson.fromJson(sb.toString(), Root.class);
list = root.getResult();//得到Result类型的对象列表集合
} catch (IOException e) {
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
if (addAll(list)) {
System.out.println("添加成功");
} else {
System.out.println("添加失败");
}
}

private static boolean addAll(List<Result> list) {

Connection conn = JDBCUtil.getConn();
PreparedStatement ps = null;
try {

ps = conn.prepareStatement("insert into sw_question values(?,?,?,?,?,?,?,?,?)");
for (int i = 0; i < list.size(); i++) {//不要用foreach的方法，查询可以修改不行,用foreach循环数据库只出现一条语句
System.out.println("i=" + i);
ps.setInt(1, list.get(i).getId());
ps.setString(2, list.get(i).getQuestion());
ps.setString(3, list.get(i).getAnswer());
ps.setString(4, list.get(i).getItem1());
ps.setString(5, list.get(i).getItem2());
ps.setString(6, list.get(i).getItem3());
ps.setString(7, list.get(i).getItem4());
ps.setString(8, list.get(i).getExpalins());
ps.setString(9, list.get(i).getUrl());
ps.addBatch();//添加到批处理 ，使用ps.executeUpdate()永远只能悲催的加一条数据

}
ps.executeBatch();//执行批处理，如果使用foreach,这句要放到循环当中，但影响程序执行速度
return true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
JDBCUtil.closeAll(conn, ps, null);
}
return false;
}
}