如何在Java中将Date插入MySQL数据库表？

Question

如何在没有时间的情况下将日期插入MySQL数据库表？我尝试了这些代码但是我得到以下异常:

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date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);           
}

我只有日期部分查询插入日期的问题:

// 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java.util.Date在Java中持久化数据库,您必须将其转换为java.sql.Date.关于JDBC SQL的幸运之Date处在于它是Java的子类Date.

因此,要创建一个java.sql.Datefrom java.util.Date,您必须这样做:

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.

你必须在哪里打电话给你的PreparedStatement.setDate()功能.

请参阅相关问题java.util.Date vs java.sql.Date.