mybatis拦截器找不到接口方法的问题

水深无声 2021-12-23 22:07 632阅读 0赞

mybatis分页拦截器报错：

org.apache.ibatis.exceptions.PersistenceException: 
    ### Error opening session.  Cause: org.apache.ibatis.plugin.PluginException: Could not find method on interface org.apache.ibatis.executor.statement.StatementHandler named prepare. Cause: java.lang.NoSuchMethodException: org.apache.ibatis.executor.statement.StatementHandler.prepare(java.sql.Connection)
    ### Cause: org.apache.ibatis.plugin.PluginException: Could not find method on interface org.apache.ibatis.executor.statement.StatementHandler named prepare. Cause: java.lang.NoSuchMethodException: org.apache.ibatis.executor.statement.StatementHandler.prepare(java.sql.Connection)
    
    	at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
    	at org.apache.ibatis.session.defaults.DefaultSqlSessionFactory.openSessionFromDataSource(DefaultSqlSessionFactory.java:100)
    	at org.apache.ibatis.session.defaults.DefaultSqlSessionFactory.openSession(DefaultSqlSessionFactory.java:57)
    	at org.mybatis.spring.SqlSessionUtils.getSqlSession(SqlSessionUtils.java:98)
    	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:428)
    	at com.sun.proxy.$Proxy53.selectList(Unknown Source)
    	at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230)
    	at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:147)
    	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:80)
    	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58)
    	at com.sun.proxy.$Proxy54.findSystemUsers(Unknown Source)
    	at com.husy.service.impl.SystemUserServiceImpl.findSystemUsers(SystemUserServiceImpl.java:37)
    	at com.husy.SpringbootMybatiesApplicationTests.findUsers(SpringbootMybatiesApplicationTests.java:35)
    	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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    	at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
    	at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
    	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
    	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
    	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
    Caused by: org.apache.ibatis.plugin.PluginException: Could not find method on interface org.apache.ibatis.executor.statement.StatementHandler named prepare. Cause: java.lang.NoSuchMethodException: org.apache.ibatis.executor.statement.StatementHandler.prepare(java.sql.Connection)
    	at org.apache.ibatis.plugin.Plugin.getSignatureMap(Plugin.java:83)
    	at org.apache.ibatis.plugin.Plugin.wrap(Plugin.java:44)
    	at com.husy.interceptor.PageInterceptor.plugin(PageInterceptor.java:67)
    	at org.apache.ibatis.plugin.InterceptorChain.pluginAll(InterceptorChain.java:31)
    	at org.apache.ibatis.session.Configuration.newExecutor(Configuration.java:599)
    	at org.apache.ibatis.session.defaults.DefaultSqlSessionFactory.openSessionFromDataSource(DefaultSqlSessionFactory.java:96)
    	... 41 more
    Caused by: java.lang.NoSuchMethodException: org.apache.ibatis.executor.statement.StatementHandler.prepare(java.sql.Connection)
    	at java.lang.Class.getMethod(Class.java:1786)
    	at org.apache.ibatis.plugin.Plugin.getSignatureMap(Plugin.java:80)
    	... 46 more

我的配置如下：

@Intercepts({ 
    		 @Signature(method = "prepare", type = StatementHandler.class, args = {  Connection.class })
    		,@Signature(type = Executor.class, method = "query", args = { MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class})
    })
    @Component
    public class PageInterceptor  implements Interceptor { 
    		...
    }

这是什么问题呢？ 我们发现 StatementHandler 源码如下：

public interface StatementHandler { 
        Statement prepare(Connection var1, Integer var2) throws SQLException;
    
        void parameterize(Statement var1) throws SQLException;
    
        void batch(Statement var1) throws SQLException;
    
        int update(Statement var1) throws SQLException;
    
        <E> List<E> query(Statement var1, ResultHandler var2) throws SQLException;
    
        <E> Cursor<E> queryCursor(Statement var1) throws SQLException;
    
        BoundSql getBoundSql();
    
        ParameterHandler getParameterHandler();
    }

发现没? prepare 方法有两个参数。而我的配置只有一个参数，这显然不正确。  
修改如下：

@Signature(method = "prepare", type = StatementHandler.class, args = {  Connection.class,Integer.class})

ok 问题解决。

总结：这个问题应该是mybatis版本更新了， 在3.40之前的版本是没有这个参数的。所以直接从网上拷贝的代码并不可用。