每日一次，bug记录

java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0).
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) ~[mysql-connector-java-8.0.19.jar:8.0.19]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[mysql-connector-java-8.0.19.jar:8.0.19]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) ~[mysql-connector-java-8.0.19.jar:8.0.19]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) ~[mysql-connector-java-8.0.19.jar:8.0.19]
at com.mysql.cj.jdbc.ClientPreparedStatement.checkBounds(ClientPreparedStatement.java:1372) ~[mysql-connector-java-8.0.19.jar:8.0.19]
at com.mysql.cj.jdbc.ClientPreparedStatement.getCoreParameterIndex(ClientPreparedStatement.java:1385) ~[mysql-connector-java-8.0.19.jar:8.0.19]
at com.mysql.cj.jdbc.ClientPreparedStatement.setString(ClientPreparedStatement.java:1752) ~[mysql-connector-java-8.0.19.jar:8.0.19]
at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.setString(HikariProxyPreparedStatement.java) ~[HikariCP-3.4.2.jar:na]
at org.apache.ibatis.type.StringTypeHandler.setNonNullParameter(StringTypeHandler.java:31) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.type.StringTypeHandler.setNonNullParameter(StringTypeHandler.java:26) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:69) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:87) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.statement.PreparedStatementHandler.parameterize(PreparedStatementHandler.java:94) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.statement.RoutingStatementHandler.parameterize(RoutingStatementHandler.java:64) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:87) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) ~[mybatis-3.5.0.jar:3.5.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_261]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_261]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_261]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_261]
at org.mybatis.spring.SqlSessionTemplate

S

q

l

S

e

s

s

i

o

n

I

n

t

e

r

c

e

p

t

o

r

.

i

n

v

o

k

e

(

S

q

l

S

e

s

s

i

o

n

T

e

m

p

l

a

t

e

.

j

a

v

a

:

433

)

[

m

y

b

a

t

i

s

−

s

p

r

i

n

g

−

2.0.0.

j

a

r

:

2.0.0

]

a

t

c

o

m

.

s

u

n

.

p

r

o

x

y

.

SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) ~[mybatis-spring-2.0.0.jar:2.0.0] at com.sun.proxy.

SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) [mybatis−spring−2.0.0.jar:2.0.0]atcom.sun.proxy.Proxy66.selectOne(Unknown Source) ~[na:na]
at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:166) ~[mybatis-spring-2.0.0.jar:2.0.0]
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:84) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58) ~[mybatis-3.5.0.jar:3.5.0]
at com.sun.proxy.$Proxy70.findByGname(Unknown Source) ~[na:na]
at com.zsy.product.service.impl.GoodsinfoServiceImpl.findByGname(GoodsinfoServiceImpl.java:181) ~[classes/:na]
at com.zsy.product.controller.GoodsinfoController.findByGname(GoodsinfoController.java:152) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_261]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_261]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_261]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_261]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) ~[spring-webmvc-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) ~[spring-webmvc-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.5.RELEASE.jar:5.2.5.RELEASE]

使用MyBatis的时候，模糊查询不能直接使用 like "%{_parameter}%"
而是使用 like concat(‘%’,#{gname},‘%’);