org.apache.ibatis.exceptions.PersistenceException:
### Error querying database.  Cause: org.apache.ibatis.builder.BuilderException: Error invoking SqlProvider method (com.github.abel533.mapper.MapperProvider.dynamicSQL).  Cause: java.lang.InstantiationException: com.github.abel533.mapper.MapperProvider
### Cause: org.apache.ibatis.builder.BuilderException: Error invoking SqlProvider method (com.github.abel533.mapper.MapperProvider.dynamicSQL).  Cause: java.lang.InstantiationException: com.github.abel533.mapper.MapperProvider
    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
    at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:119)
    at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63)
    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
    at com.sun.proxy.$Proxy11.select(Unknown Source)
    at cn.itcast.mybatis.mapper.NewUserMapperTest.testPage(NewUserMapperTest.java:216)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: org.apache.ibatis.builder.BuilderException: Error invoking SqlProvider method (com.github.abel533.mapper.MapperProvider.dynamicSQL).  Cause: java.lang.InstantiationException: com.github.abel533.mapper.MapperProvider
    at org.apache.ibatis.builder.annotation.ProviderSqlSource.createSqlSource(ProviderSqlSource.java:78)
    at org.apache.ibatis.builder.annotation.ProviderSqlSource.getBoundSql(ProviderSqlSource.java:63)
    at com.github.pagehelper.sqlsource.PageProviderSqlSource.getBoundSql(PageProviderSqlSource.java:63)
    at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:278)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:75)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49)
    at com.github.abel533.mapperhelper.MapperInterceptor.intercept(MapperInterceptor.java:61)
    at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60)
    at com.sun.proxy.$Proxy10.query(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49)
    at com.github.pagehelper.SqlUtil._processPage(SqlUtil.java:276)
    at com.github.pagehelper.SqlUtil.processPage(SqlUtil.java:229)
    at com.github.pagehelper.PageHelper.intercept(PageHelper.java:118)
    at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60)
    at com.sun.proxy.$Proxy10.query(Unknown Source)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
    ... 30 more
Caused by: java.lang.InstantiationException: com.github.abel533.mapper.MapperProvider
    at java.lang.Class.newInstance(Class.java:368)
    at org.apache.ibatis.builder.annotation.ProviderSqlSource.createSqlSource(ProviderSqlSource.java:71)
    ... 53 more

通过Mapper要先集成在分页助手 前面

Error invoking SqlProvider method (com.github.abel533.mapper.MapperProvider.dynamicSQL). Cause: java.lang.InstantiationException: com.github.abel533.mapper.MapperProvider