问题
笔者使用JDBC连接数据库,查询数据是控制台报错
java.sql.SQLException: Value '320123456789012345' is outside of valid range for type java.lang.Integer Query: SELECT * FROM UserInfo WHERE uId=? Parameters: [1]
详细问题
笔者Java实体类内容
package com.iflytek.bms.domain;
import lombok.Data;
@Data
public class UserInfo {
private Integer id;
private Integer uId;
private Integer idCard;
private String fullName;
private String email;
private String phone;
private String address;
}
笔者UserInfoDaoImpl Class文件实现查询函数如下
@Override
public UserInfo selectUserInfoByUId(Integer uId) {
System.out.println("uId" + uId);
String sql = "SELECT * FROM UserInfo WHERE uId=?";
try {
return runner.query(sql, new BeanHandler<>(UserInfo.class), 1);
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
控制台详细报错
uId1
java.sql.SQLException: Value '320123456789012345' is outside of valid range for type java.lang.Integer Query: SELECT * FROM UserInfo WHERE uId=? Parameters: [1]
at org.apache.commons.dbutils.AbstractQueryRunner.rethrow(AbstractQueryRunner.java:527)
at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:391)
at org.apache.commons.dbutils.QueryRunner.query(QueryRunner.java:329)
at com.iflytek.bms.dao.impl.UserInfoDaoImpl.selectUserInfoByUId(UserInfoDaoImpl.java:76)
at com.iflytek.bms.web.listener.admin.AdminUserListServlet.doGet(AdminUserListServlet.java:43)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:670)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:779)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.iflytek.bms.web.filter.LoginFilter.doFilter(LoginFilter.java:33)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.iflytek.bms.web.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:26)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
解决方案
修改Java实体类内容中的idCard属性类型,将其改为String
解决原因
错误原因是数据库中字段与实体类中的字段不对应。
具体的:笔者问题的原因是在Java实体类UserInfo中,将idCard属性的类型定义为Integer,而数据库表中对应的字段类型是varchar,这导致在查询时无法将字符串类型的数据转换为整数类型。
解决这个问题的方法是将idCard属性的类型改为String,以便与数据库表中的字段类型匹配。修改UserInfo实体类的代码如下:通过将idCard属性的类型改为String,就可以正确地将数据库中的varchar类型的数据映射到Java实体类中。这样,在执行查询操作时就不会再出现类型转换错误。
请注意,当将idCard属性的类型修改为String后,需要相应地修改代码中对idCard属性的处理逻辑,以适应新的类型。
总结
笔者认为这个报错似乎对开发者并不友好,似乎是告诉开发者传递的参数值为 ‘320123456789012345’,笔者调试后发现传递的参数值非’320123456789012345’,参考该帖子mybatis查询错误:’Value ‘125878855456545’ is outside of valid range for type java.lang.Integer;发现错误原因是数据库中字段与实体类中的字段不对应。
参考文献
mybatis查询错误:’Value ‘125878855456545’ is outside of valid range for type java.lang.Integer;
chatgpt
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