SpringBoot 中 使用Mybatis时 如果后端数据库为 Oracle注意事项

报错信息如下：

 Could not set parameters for mapping: ParameterMapping{property='age', mode=IN, javaType=class java.lang.Integer, jdbcType=null

 org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='age', mode=IN, javaType=class java.lang.Integer, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting null for parameter #5 with JdbcType OTHER . Try setting a different JdbcType for this parameter or a different jdbcTypeForNull configuration property. Cause: java.sql.SQLException: 无效的列类型: 1111
     at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
     at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
     at com.sun.proxy.$Proxy72.insert(Unknown Source)
     at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:278)
     at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:58)
     at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
     at com.sun.proxy.$Proxy95.insert(Unknown Source)
     at com.leecx.service.impl.UserServiceImpl.saveUser(UserServiceImpl.java:23)
     at com.leecx.controller.MyBatisCRUDController.saveUser(MyBatisCRUDController.java:44)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
     at java.lang.reflect.Method.invoke(Method.java:498)
     at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
     at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
     at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
     at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
     at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
     at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
     at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
     at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
     at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
     at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
     at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
     at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
     at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
     at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
     at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108)
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
     at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
     at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
     at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
     at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
     at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
     at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
     at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
     at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
     at java.lang.Thread.run(Thread.java:748)
 Caused by: org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='age', mode=IN, javaType=class java.lang.Integer, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting null for parameter #5 with JdbcType OTHER . Try setting a different JdbcType for this parameter or a different jdbcTypeForNull configuration property. Cause: java.sql.SQLException: 无效的列类型: 1111
     at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:89)
     at org.apache.ibatis.executor.statement.PreparedStatementHandler.parameterize(PreparedStatementHandler.java:93)
     at org.apache.ibatis.executor.statement.RoutingStatementHandler.parameterize(RoutingStatementHandler.java:64)
     at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:86)
     at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:49)
     at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
     at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
     at java.lang.reflect.Method.invoke(Method.java:498)
     at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63)
     at com.sun.proxy.$Proxy92.update(Unknown Source)
     at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)
     at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:185)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
     at java.lang.reflect.Method.invoke(Method.java:498)
     at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
     ... 64 more
 Caused by: org.apache.ibatis.type.TypeException: Error setting null for parameter #5 with JdbcType OTHER . Try setting a different JdbcType for this parameter or a different jdbcTypeForNull configuration property. Cause: java.sql.SQLException: 无效的列类型: 1111
     at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:47)
     at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:87)
     ... 83 more
 Caused by: java.sql.SQLException: 无效的列类型: 1111
     at oracle.jdbc.driver.OracleStatement.getInternalType(OracleStatement.java:3900)
     at oracle.jdbc.driver.OraclePreparedStatement.setNullCritical(OraclePreparedStatement.java:4406)
     at oracle.jdbc.driver.OraclePreparedStatement.setNull(OraclePreparedStatement.java:4388)
     at oracle.jdbc.driver.OraclePreparedStatementWrapper.setNull(OraclePreparedStatementWrapper.java:1281)
     at com.alibaba.druid.filter.FilterChainImpl.preparedStatement_setNull(FilterChainImpl.java:2807)
     at com.alibaba.druid.filter.FilterAdapter.preparedStatement_setNull(FilterAdapter.java:1286)
     at com.alibaba.druid.filter.FilterChainImpl.preparedStatement_setNull(FilterChainImpl.java:2804)
     at com.alibaba.druid.proxy.jdbc.PreparedStatementProxyImpl.setNull(PreparedStatementProxyImpl.java:402)
     at com.alibaba.druid.pool.DruidPooledPreparedStatement.setNull(DruidPooledPreparedStatement.java:266)
     at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:45)
     ... 84 more

因为Mybaties对ORACLE数据的支持  中  默认存储数据库表的 字段不能保存为空

如果允许保存为空  则需要指定 参数  jdbcTypeForNull

1、配置文件只要在mybatis-config.xml 中添加 这条 代码即可 

<settings>

<setting name="jdbcTypeForNull" value="NULL" />

</settings>

2、SpringBoot如果没有配置文件的  则需要在 SpringBoot启动主类上 加上如下代码

 /*************对于是ORACLE 数据库的 mybatis必须增加如下的配置*********Start */
     @Bean
     public ConfigurationCustomizer configurationCustomizer() {
         return new MybatisPlusCustomizers();
     }

     class MybatisPlusCustomizers implements ConfigurationCustomizer {
         @Override
         public void customize(org.apache.ibatis.session.Configuration configuration) {
             configuration.setJdbcTypeForNull(JdbcType.NULL);
         }
     }
     /*************对于是ORACLE 数据库的 mybatis必须增加如下的配置*********End */

如  Application.java

 package com.leecx;

 import org.apache.ibatis.type.JdbcType;
 import org.mybatis.spring.boot.autoconfigure.ConfigurationCustomizer;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;

 import tk.mybatis.spring.annotation.MapperScan;

 @SpringBootApplication
 //扫描 mybatis mapper 包路径
 @MapperScan(basePackages = "com.leecx.mapper")
 //扫描 所有需要的包, 包含一些自用的工具类包 所在的路径
 @ComponentScan(basePackages= {"com.leecx", "org.n3r.idworker"})
 public class Application {

     /*************对于是ORACLE 数据库的 mybatis必须增加如下的配置*********Start */
     @Bean
     public ConfigurationCustomizer configurationCustomizer() {
         return new MybatisPlusCustomizers();
     }

     class MybatisPlusCustomizers implements ConfigurationCustomizer {
         @Override
         public void customize(org.apache.ibatis.session.Configuration configuration) {
             configuration.setJdbcTypeForNull(JdbcType.NULL);
         }
     }
     /*************对于是ORACLE 数据库的 mybatis必须增加如下的配置*********End */

     public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
     }

 }