使用java将excel电子表格数据导入MYSQL数据库

使用以下命令更改您的查询：

Exception in thread "main" 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 '61.166666666666664`,`75.25`,'61.166666666666664',`61.166666666666664`,`75.25`)' at line 1
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
    at com.mysql.jdbc.Util.getInstance(Util.java:387)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:942)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3966)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3902)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2526)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2673)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2549)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)
    at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1192)
    at fibb.assessmentdatabase_3.main(assessmentdatabase_3.java:48)

你错过了“最后”

您不需要将“双精度”用于双精度，只需将“双精度”用于字符串

我建议使用：

String sql = "INSERT INTO description_process_level (process, level, a, b, c) VALUES('" + Process + "'," + Level + "," + A + "," + B + "," + C +")";

下面是一个如何使用预置语句的示例：

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我尝试了这个方法，但现在它开始显示不同的错误，即线程“main”java.sql.SQLException中的-Exception：参数索引超出范围（1>参数数量，即0）。是的，当然数据库中有多少个参数，您应该指定要插入的参数，如字符串sql=”在描述中插入流程级别（p1、p2、p3、p4、p5）值（？、、？、？、？）“您可以看到my editString sql=“在描述中插入流程级别（流程、级别、a、b、c）值（流程、级别、a、b、c）”；pstm=（PreparedStatement）con.prepareStatement（sql）；pstm.setString（1、流程）；pstm.setDouble（2，级别）；pstm.setDouble（3，A）；pstm.setDouble（4，B）；pstm.setDouble（5，C）；仍然存在相同的错误。值中没有错误，只是生成值（？，，，，，，），这都是我编辑的答案。如果数据库中没有任何问题，这应该适用于您

String sql = "INSERT INTO description_process_level (process, level, a, b, c) VALUES('" + Process + "'," + Level + "," + A + "," + B + "," + C +")";

String sql = "INSERT INTO description_process_level (process, level, a, b, c) VALUES(?, ?, ?, ?, ?)";
pstm = (PreparedStatement) con.prepareStatement(sql);

pstm.setString(1, Process);
pstm.setDouble(2, Level);
pstm.setDouble(3, A);
pstm.setDouble(4, B);
pstm.setDouble(5, C);