运行maven项目报错：The method queryForInt(String) is undefined for the type JdbcTemplate
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报错：The method queryForInt(String) is undefined for the type JdbcTemplate
The method JdbcTemplate.queryForInt was deprecated in Spring 3.2.2 and it was removed in Spring 4.2.0.
问题：spring.jar包问题，spring3.2.2支持 queryForInt(String) 方法，但spring4.2.0不支持这个方法，他只支持 queryForObject(String sql, class<T> requiredType) 这个方法。
解决方法：将spring版本降到spring3.2.2，若为maven项目，可在pom.xml将spring依赖中spring的Version改为3.2.2；或者将自己报错处使用的方法换成queryForObject(String sql, class<T> requiredType)。
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