将arraylist写入数据库java [英] Write arraylist to a database java
本文介绍了将arraylist写入数据库java的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有两个数组列表要插入到数据库表的 2 列中,如下所示:
I have two arraylists to insert into 2 columns in a database table as follows:
arraylist1: 123444, 324555, 6423643, 532326
arraylist2: jkfdsl, nkjfsdlj, jdslkfjdlkj, jfsldjfsk, fjdlskjfs
我编写了以下代码来插入数组列表,但它不起作用.我将感谢您的帮助.
I wrote the following code to insert the arraylists but it is not working. I will appreciate your help.
try {
// Prepare a statement to insert a record
String sql = "INSERT INTO soundsdata.splog (arraylist1, arraylist2) VALUES(?,?)";
pstmt = (PreparedStatement) con.prepareStatement(sql);
pstmt.setArray(1,sptospring);
pstmt.setString(2,eachList.toString());
// Insert the row
pstmt.executeUpdate();
}finally {
pstmt.close();
}
推荐答案
您可以执行以下操作:
假设您正在尝试创建一行,其中第一个 column
将包含逗号分隔格式的第一个 ArrayList
的内容和第二个 column
将包含第二个ArrayList
Assuming that you're trying to create one row, where the 1st column
will contain the content of the first ArrayList
in comma-separated format and the 2nd column
will contain the content of the secondArrayList
StringBuilder buffer = new StringBuilder();
boolean processedFirst = false;
String firstParam = null, secondParam = null;
try{
for(String record: arrayList1){
if(processedFirst)
buffer.append(",");
buffer.append(record);
processedFirst = true;
}
firstParam = buffer.toString();
}finally{
buffer = null;
}
processedFirst = false;
buffer = new StringBuilder();
try{
for(String record: arrayList2){
if(processedFirst)
buffer.append(",");
buffer.append(record);
processedFirst = true;
}
secondParam = buffer.toString();
}finally{
buffer = null;
}
secondParam = buffer.toString();
String sql = "INSERT INTO soundsdata.splog (arraylist1, arraylist2) VALUES(?,?)";
try{
psmt = (PreparedStatement) con.prepareStatement(sql);
pstmt.setString(1,firstParam);
pstmt.setString(2,secondParam);
pstmt.executeUpdate();
}finally {
pstmt.close();
}
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