我们使用SpringBoot 1.5进行以下工作查询:
@Query(value = "SELECT DISTINCT c FROM Customer c INNER JOIN c.industry i WHERE " +
"c.role IN :roleFilter " +
"AND (:#{#industryFilter.size()} = 1 OR i.id IN :industryFilter) " +
"AND (:searchString IS NULL " +
"OR CONCAT_WS(' ', c.name, c.name2) LIKE CONCAT('%', :searchString, '%') " +
"OR CONCAT_WS(' ', c.name2, c.name) LIKE CONCAT('%', :searchString, '%')) " +
"AND (:includeDeleted = true OR c.deletedDate is NULL)",
countQuery = "SELECT COUNT(DISTINCT c) FROM Customer c INNER JOIN c.industry i WHERE " +
"c.role IN :roleFilter AND " +
"(:#{#industryFilter.size()} = 1 OR i.id IN :industryFilter) " +
"AND (:searchString IS NULL " +
"OR CONCAT_WS(' ', c.name, c.name2) LIKE CONCAT('%', :searchString, '%') " +
"OR CONCAT_WS(' ', c.name2, c.name) LIKE CONCAT('%', :searchString, '%')) " +
"AND (:includeDeleted = true OR c.deletedDate is NULL)")
Page<Customer> findCustomers(@Param("roleFilter") Set<Role> roleFilter,
@Param("industryFilter") Set<String> industryFilter,
@Param("searchString") String searchString,
@Param("includeDeleted") boolean includeDeleted, Pageable pageable);
请注意我们如何将输入传递给LIKE:CONCAT('%', :searchString, '%')
从springBootVersion = '1.5.17.RELEASE'
升级到springBootVersion = '2.1.3.RELEASE'
(我们使用Gradle)后,该查询将在运行时失败,并发生以下异常:
org.hibernate.QueryException:未绑定的命名参数:includeDeleted
用CONCAT('%', :searchString, '%')
代替%:searchString%
可解决此问题。
我的问题是:为什么?
通过进入调试模式并遵循完整的调用栈,我可以看到正确地从方法调用中正确检索了参数,如在205行的JdkDynamicAopProxy
中进行的调用Object[] argsToUse = AopProxyUtils.adaptArgumentsIfNecessary(method, args);
导致:< / p>
argsToUse = {Object[5]@15562}
0 = {HashSet@15491} size = 4
1 = {HashSet@15628} size = 1
2 = null
3 = {Boolean@15629} false
4 = {PageRequest@15490} "Page request [number: 0, size 20, sort: name: ASC,name2: ASC]"
到目前为止,一切都很好。然后,我们继续操作,调用方法也已正确解析:
parameterTypes = {Class[5]@15802}
0 = {Class@198} "interface java.util.Set"
1 = {Class@198} "interface java.util.Set"
2 = {Class@311} "class java.lang.String"
3 = {Class@15811} "boolean"
4 = {Class@9875} "interface org.springframework.data.domain.Pageable"
然后,我们走得更远,然后转到RepositoryFactorySupport
第599行,调用private Object doInvoke(MethodInvocation invocation) throws Throwable
,它使用来自内部类private final Map<Method, RepositoryQuery> queries;
的{{1}}(我不确定何时/如何此变量已创建并填充),其中包含我的存储库界面中所有用public class QueryExecutorMethodInterceptor implements MethodInterceptor
注释的查询。
对于我们的特定情况,它包含一个与我正在调用的查询( findCustomers )匹配的条目(最后一个):
@Query
展开该条目,我可以看到错误的出处,queries = {HashMap@16041} size = 3
0 = {HashMap$Node@16052} "public abstract com.swisscom.psp.domain.Customer com.swisscom.psp.repository.CustomerRepository.getOne(java.lang.String)" ->
1 = {HashMap$Node@16055} "public abstract boolean com.swisscom.psp.repository.CustomerRepository.existsWithRole(java.lang.String,java.util.Set)" ->
2 = {HashMap$Node@16058} "public abstract org.springframework.data.domain.Page com.swisscom.psp.repository.CustomerRepository.findCustomers(java.util.Set,java.util.Set,java.lang.String,boolean,org.springframework.data.domain.Pageable)" ->
命名参数的绑定根本不存在:
:includeDeleted
现在,我已经有了前面提到的修复程序,但是我仍然非常想知道以下内容,以供将来参考:
value = {SimpleJpaQuery@16060}
query = {ExpressionBasedStringQuery@16069}
query = "SELECT DISTINCT c FROM Customer c INNER JOIN c.industry i WHERE c.role IN :roleFilter AND (:__$synthetic$__1 = 1 OR i.id IN :industryFilter) AND (:searchString IS NULL OR CONCAT_WS(' ', c.name, c.name2) LIKE CONCAT('%', :searchString, '%') OR CONCAT_WS(' ', c.name2, c.name) LIKE CONCAT('%', :searchString, '%')) AND (:includeDeleted = true OR c.deletedDate is NULL)"
bindings = {ArrayList@16089} size = 6
0 = {StringQuery$InParameterBinding@16092} "ParameterBinding [name: roleFilter, position: null, expression: null]"
1 = {StringQuery$ParameterBinding@16093} "ParameterBinding [name: __$synthetic$__1, position: null, expression: #industryFilter.size()]"
2 = {StringQuery$InParameterBinding@16094} "ParameterBinding [name: industryFilter, position: null, expression: null]"
3 = {StringQuery$ParameterBinding@16095} "ParameterBinding [name: searchString, position: null, expression: null]"
4 = {StringQuery$ParameterBinding@16096} "ParameterBinding [name: searchString, position: null, expression: null]"
5 = {StringQuery$ParameterBinding@16097} "ParameterBinding [name: searchString, position: null, expression: null]"
变量?我们的数据库是MariaDB 10.1.36
编辑:在所有发生此行为的地方(在某些地方仍然发生),unbound参数始终是最后一个
EDIT2:升级后其他人也有类似的行为,为什么会发生这种情况? reference
EDIT3:reference,并且也报告了这种奇怪的行为。足够有趣的是,如果我将已经连接的输入传递给:searchString(例如:%SOMETHING%),并且如果我留下%:searchString%,我确实会得到异常,但是我没有得到异常。是的,最后移动这些参数可以解决我在绑定时遇到的一些错误。
EDIT4:也许与bug相关?
显然发生了一件奇怪的事情,所以:此绑定解析是如何发生的?
预先感谢,祝您愉快
答案 0 :(得分:1)
据我所知,实际上,您的两种方法都不是在此处使用通配符占位符处理LIKE
的正确方法。相反,LIKE
表达式应为:
LIKE :searchString
您应该绑定到此参数:searchString
:
String searchString = "bananas";
String param = "%" + searchString + "%";
// then bind param to :searchString
也就是说,将整个字符串和%
通配符绑定在一起。然后,让数据库担心如何对其进行转义。