问题
Connection read-only mode is not enforceable after the connection has been established. To enforce a read only connection, set the read-only data source or connection property. ERRORCODE=4474, SQLSTATE=01000
Here is my Cotroller
package com.course.springbootstarter.topic;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.RequestMethod;
@RestController
public class TopicController {
@Autowired
private TopicService topicService;
@RequestMapping(method = RequestMethod.GET, value = "/topics")
public List<Topic> getAllTopics() {
return topicService.getAllTopics();
}
@RequestMapping(method = RequestMethod.GET, value = "/topics/{id}")
public Topic getTopic(@PathVariable long id) {
return topicService.getTopic(id);
}
@RequestMapping(method = RequestMethod.POST, value = "/addtopic")
public void addTopic(@RequestBody Topic topic) {
topicService.addTopic(topic);
}
@RequestMapping(method = RequestMethod.PUT, value = "/updatetopic/{id}")
public void updateTopic(@RequestBody Topic topic, @PathVariable long id) {
topicService.updateTopic(id, topic);
}
}
Topic.java
package com.course.springbootstarter.topic;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "course")
public class Topic {
private static final long serialVersionUID = -3009157732242241606L;
@Id
//@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
private String name;
private String description;
public Topic() {
}
public Topic(long id, String name, String description) {
super();
this.id = id;
this.name = name;
this.description = description;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
I get this error message:
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.4.3.RELEASE)
2019-03-20 10:43:39.947 INFO 10740 --- [ main] c.course.springbootstarter.CourseApiApp : Starting CourseApiApp on IRL103021 with PID 10740 (C:\Users\c166422\Documents\github\springboot-restful-mysql-master\target\classes started by c166422 in C:\Users\c166422\Documents\github\springboot-restful-mysql-master)
2019-03-20 10:43:39.953 INFO 10740 --- [ main] c.course.springbootstarter.CourseApiApp : The following profiles are active: demo
2019-03-20 10:43:40.156 INFO 10740 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@f61c7b6: startup date [Wed Mar 20 10:43:40 CDT 2019]; root of context hierarchy
2019-03-20 10:43:43.564 INFO 10740 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [class org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$45faa968] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-03-20 10:43:45.279 INFO 10740 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2019-03-20 10:43:45.307 INFO 10740 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2019-03-20 10:43:45.309 INFO 10740 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.6
2019-03-20 10:43:45.557 INFO 10740 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-03-20 10:43:45.560 INFO 10740 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 5408 ms
2019-03-20 10:43:46.161 INFO 10740 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2019-03-20 10:43:46.201 INFO 10740 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2019-03-20 10:43:46.211 INFO 10740 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2019-03-20 10:43:46.213 INFO 10740 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2019-03-20 10:43:46.220 INFO 10740 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2019-03-20 10:43:47.813 INFO 10740 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2019-03-20 10:43:47.895 INFO 10740 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2019-03-20 10:43:48.233 INFO 10740 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.0.11.Final}
2019-03-20 10:43:48.239 INFO 10740 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2019-03-20 10:43:48.248 INFO 10740 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2019-03-20 10:43:48.428 INFO 10740 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2019-03-20 10:43:48.776 INFO 10740 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.DB2Dialect
2019-03-20 10:43:49.896 INFO 10740 --- [ main] org.hibernate.tool.hbm2ddl.SchemaUpdate : HHH000228: Running hbm2ddl schema update
2019-03-20 10:43:50.052 INFO 10740 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2019-03-20 10:43:51.515 INFO 10740 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@f61c7b6: startup date [Wed Mar 20 10:43:40 CDT 2019]; root of context hierarchy
2019-03-20 10:43:51.783 INFO 10740 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/topics/{id}],methods=[GET]}" onto public com.course.springbootstarter.topic.Topic com.course.springbootstarter.topic.TopicController.getTopic(long)
2019-03-20 10:43:51.788 INFO 10740 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/addtopic],methods=[POST]}" onto public void com.course.springbootstarter.topic.TopicController.addTopic(com.course.springbootstarter.topic.Topic)
2019-03-20 10:43:51.791 INFO 10740 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/updatetopic/{id}],methods=[PUT]}" onto public void com.course.springbootstarter.topic.TopicController.updateTopic(com.course.springbootstarter.topic.Topic,long)
2019-03-20 10:43:51.795 INFO 10740 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/topics],methods=[GET]}" onto public java.util.List<com.course.springbootstarter.topic.Topic> com.course.springbootstarter.topic.TopicController.getAllTopics()
2019-03-20 10:43:51.823 INFO 10740 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2019-03-20 10:43:51.844 INFO 10740 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2019-03-20 10:43:51.974 INFO 10740 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-03-20 10:43:51.976 INFO 10740 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-03-20 10:43:52.125 INFO 10740 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2019-03-20 10:43:52.822 INFO 10740 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2019-03-20 10:43:53.509 INFO 10740 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2019-03-20 10:43:53.663 INFO 10740 --- [ main] c.course.springbootstarter.CourseApiApp : Started CourseApiApp in 14.767 seconds (JVM running for 21.743)
2019-03-20 10:44:03.727 INFO 10740 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2019-03-20 10:44:03.731 INFO 10740 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2019-03-20 10:44:03.820 INFO 10740 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 88 ms
2019-03-20 10:44:03.976 INFO 10740 --- [nio-8080-exec-1] o.h.h.i.QueryTranslatorFactoryInitiator : HHH000397: Using ASTQueryTranslatorFactory
2019-03-20 10:44:04.433 WARN 10740 --- [nio-8080-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper : SQL Warning Code: 4474, SQLState: 01000
2019-03-20 10:44:04.434 WARN 10740 --- [nio-8080-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper : [jcc][t4][10217][10310][4.19.66] Connection read-only mode is not enforceable after the connection has been established.
To enforce a read only connection, set the read-only data source or connection property. ERRORCODE=4474, SQLSTATE=01000
回答1:
This message can be ignored. I have not found it to have any impact on the application. However, if you wish to suppress this warning
- You can change the logger level.
- You can suppress all the warnings
follow this for more information Link
回答2:
Issue fixed by adding this line to log4j.properties. Thanks to @xerx593
log4j.logger.org.hibernate.engine.jdbc.spi.SqlExceptionHelper=ERROR
来源：https://stackoverflow.com/questions/55265029/trying-to-get-one-topic-http-localhost8080-topicsid-1-in-postman-got-the-fo