如何在Java中向MySQL数据库表中插入日期？

Question

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Mar 05 00:00:00 GMT-08:00 2014,1,1)' at line 1

注意：在MySQL表中，此列的数据类型我选择了日期数据类型

String Date = "\\d\\d\\d\\d\\D[0-1][0-9]\\D[0-3][0-9]";
while (DateMatcher.find())  {   
    String date = DateMatcher.group().trim();

    DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
    Date myDate = formatter.parse(date);

    db.insert_date(myDate,2,1);           
}

我只是有问题的日期部分查询插入日期：

// insert DATE
public void insert_date(Date  date_str, int sentence_id ,int document_id ){
       // Statements allow to issue SQL queries to the database

    try {
        statement = connect.createStatement();

        System.out.println(  "insert into Date(date_Str,Sen_id,doc_id) " +
                 " values(" + date_str + "," +  sentence_id + "," + document_id +  ")"
                 );


        statement.executeUpdate(

         "insert into test.Date(date,Sen_id,doc_id)" +
         " values(" + date_str + "," +  sentence_id + "," + document_id + ")"
          );
    }
    catch(Exception e ){System.out.println(e);};
    // Result set get the result of the SQL query

}

Answer 1

首先，要将Java.util.date持久化到Java数据库中，必须将其转换为Java.sql.date。JDBC SQLdate的幸运之处在于它是Javadate的一个子类。

因此，要从java.util.date创建java.sql.date，必须执行以下操作：

DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
Date myDate = formatter.parse(date);
java.sql.Date sqlDate = new java.sql.Date(myDate.getTime());

db.insert_date(sqlDate);

确保db.insert_date只接受java.sql.date。