Specific error information
java.lang.IllegalStateException: Failed to execute CommandLineRunner at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:798) [spring-boot-2.5.0.jar:2.5.0] at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:779) [spring-boot-2.5.0.jar:2.5.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:344) [spring-boot-2.5.0.jar:2.5.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1336) [spring-boot-2.5.0.jar:2.5.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1325) [spring-boot-2.5.0.jar:2.5.0] at com.hzj.HXBlogApplication.main(HXBlogApplication.java:21) [classes/:na] Caused by: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'title' from result set. Cause: java.lang.NumberFormatException: For input string: "SpringSecurity￤￥?￥?" at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:92) ~[mybatis-spring-2.0.5.jar:2.0.5] at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440) ~[mybatis-spring-2.0.5.jar:2.0.5] at com.sun.proxy.$Proxy101.selectList(Unknown Source) ~[na:na] at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:223) ~[mybatis-spring-2.0.5.jar:2.0.5] at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.executeForMany(MybatisMapperMethod.java:173) ~[mybatis-plus-core-3.4.1.jar:3.4.1] at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:78) ~[mybatis-plus-core-3.4.1.jar:3.4.1] at com.baomidou.mybatisplus.core.override.MybatisMapperProxy$PlainMethodInvoker.invoke(MybatisMapperProxy.java:148) ~[mybatis-plus-core-3.4.1.jar:3.4.1] at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:89) ~[mybatis-plus-core-3.4.1.jar:3.4.1] at com.sun.proxy.$Proxy102.selectList(Unknown Source) ~[na:na] at com.hzj.runner.SprinBootStartRunner.run(SprinBootStartRunner.java:32) ~[classes/:na] at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:795) [spring-boot-2.5.0.jar:2.5.0] ... 5 common frames omitted Caused by: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'title' from result set. Cause: java.lang.NumberFormatException: For input string: "SpringSecurity￤￥ ?￥?" at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:87) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createUsingConstructor(DefaultResultSetHandler.java:710) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createByConstructorSignature(DefaultResultSetHandler.java:693) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:657) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:630) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:397) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:354) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:328) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:301) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:194) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:65) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) ~[mybatis-3.5.6.jar:3.5.6] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_221] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_221] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_221] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_221] at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63) ~[mybatis-3.5.6.jar:3.5.6] at com.sun.proxy.$Proxy165.query(Unknown Source) ~[na:na] at com.baomidou.mybatisplus.core.executor.MybatisSimpleExecutor.doQuery(MybatisSimpleExecutor.java:69) ~[mybatis-plus-core-3.4.1.jar:3.4.1] at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) ~[mybatis-3.5.6.jar:3.5.6] at com.baomidou.mybatisplus.core.executor.MybatisCachingExecutor.query(MybatisCachingExecutor.java:165) ~[mybatis-plus-core-3.4.1.jar:3.4.1] at com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor.intercept(MybatisPlusInterceptor.java:65) ~[mybatis-plus-extension-3.4.1.jar:3.4.1] at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:61) ~[mybatis-3.5.6.jar:3.5.6] at com.sun.proxy.$Proxy164.query(Unknown Source) ~[na:na] at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) ~[mybatis-3.5.6.jar:3.5.6] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_221] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_221] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_221] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_221] at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:426) ~[mybatis-spring-2.0.5.jar:2.0.5] ... 14 common frames omitted Caused by: java.lang.NumberFormatException: For input string: "SpringSecurity￤￥￥?" at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2043) ~[na:1.8.0_221] at sun.misc.FloatingDecimal.parseDouble(FloatingDecimal.java:110) ~[na:1.8.0_221] at java.lang.Double.parseDouble(Double.java:538) ~[na:1.8.0_221] at com.mysql.cj.protocol.a.MysqlTextValueDecoder.getDouble(MysqlTextValueDecoder.java:249) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.mysql.cj.result.AbstractNumericValueFactory.createFromBytes(AbstractNumericValueFactory.java:57) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.mysql.cj.protocol.a.MysqlTextValueDecoder.decodeByteArray(MysqlTextValueDecoder.java:143) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.mysql.cj.protocol.result.AbstractResultsetRow.decodeAndCreateReturnValue(AbstractResultsetRow.java:135) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.mysql.cj.protocol.result.AbstractResultsetRow.getValueFromBytes(AbstractResultsetRow.java:243) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.mysql.cj.protocol.a.result.TextBufferRow.getValue(TextBufferRow.java:132) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.mysql.cj.jdbc.result.ResultSetImpl.getObject(ResultSetImpl.java:1321) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.mysql.cj.jdbc.result.ResultSetImpl.getLong(ResultSetImpl.java:848) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.mysql.cj.jdbc.result.ResultSetImpl.getLong(ResultSetImpl.java:854) ~[mysql-connector-java-8.0.25.jar:8.0.25] at com.zaxxer.hikari.pool.HikariProxyResultSet.getLong(HikariProxyResultSet.java) ~[HikariCP-4.0.3.jar:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_221] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_221] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_221] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_221] at org.apache.ibatis.logging.jdbc.ResultSetLogger.invoke(ResultSetLogger.java:69) ~[mybatis-3.5.6.jar:3.5.6] at com.sun.proxy.$Proxy168.getLong(Unknown Source) ~[na:na] at org.apache.ibatis.type.LongTypeHandler.getNullableResult(LongTypeHandler.java:37) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.type.LongTypeHandler.getNullableResult(LongTypeHandler.java:26) ~[mybatis-3.5.6.jar:3.5.6] at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:85) ~[mybatis-3.5.6.jar:3.5.6] ... 45 common frames omitted
After investigation, it was found that the Lombok annotation of no-parameter structure was missing on the entity class table.
The solution is to add the @NoArgsConstructor annotation
You can see that after adding the no-argument construction annotation, it can start normally.
Another situation where this problem may occur is that the entity class field name and the table field name are inconsistent. This can also be solved through lombok annotations.
