java.sql.SQLException: Parameter index out of range (2 > number of parameters, which is 1).

回答: 这个错误是由于参数索引超出了参数的范围所引起的。具体来说，错误信息中的(2 > number of parameters, which is 1)表示参数索引为2，而实际上只有1个参数。这通常是在使用占位符赋值时出现的问题，当参数索引超出了占位符的个数时就会报错。因此，需要检查代码逻辑，确保参数索引与占位符的个数匹配。
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