如何解决JPA与mybatis-plus不兼容的问题？

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引入mybatis-plus后，在spring-boot启动时，JPA使用CCJSqlParser对SQL进行解析处理。由于@Query中的Native SQL语法不完整，因此会报错：+Caused by: java.lang.IllegalArgumentException: The query you provided+

引入mybatis-plus后，在spring-boot启动时，JPA会使用CCJSqlParser对SQL进行分析处理，由于@Query中的Native-SQL语法并非完全的sql，所以，会报错

Caused by: java.lang.IllegalArgumentException: The query you provided is not a valid SQL Query!
at org.springframework.data.jpa.repository.query.JSqlParserQueryEnhancer.detectParsedType(JSqlParserQueryEnhancer.java:95)
at org.springframework.data.jpa.repository.query.JSqlParserQueryEnhancer.<init>(JSqlParserQueryEnhancer.java:72)
at org.springframework.data.jpa.repository.query.QueryEnhancerFactory.forQuery(QueryEnhancerFactory.java:45)
at org.springframework.data.jpa.repository.query.StringQuery.<init>(StringQuery.java:83)
at org.springframework.data.jpa.repository.query.DeclaredQuery.of(DeclaredQuery.java:40)
at org.springframework.data.jpa.repository.query.JpaQueryMethod.assertParameterNamesInAnnotatedQuery(JpaQueryMethod.java:158)
at org.springframework.data.jpa.repository.query.JpaQueryMethod.<init>(JpaQueryMethod.java:139)
at org.springframework.data.jpa.repository.query.DefaultJpaQueryMethodFactory.build(DefaultJpaQueryMethodFactory.java:44)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:93)
at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:103)
... 66 common frames omitted
Caused by: net.sf.jsqlparser.JSQLParserException: Encountered unexpected token: "<=" <OP_MINORTHANEQUALS>
at line 1, column 1648.

Was expecting one of:

"&"
")"
"."
"::"

Virgil??
"<<"
">>"
"COLLATE"
"["
"^"
"|"

at net.sf.jsqlparser.parser.CCJSqlParserUtil.parseStatement(CCJSqlParserUtil.java:190)
at net.sf.jsqlparser.parser.CCJSqlParserUtil.parse(CCJSqlParserUtil.java:63)
at net.sf.jsqlparser.parser.CCJSqlParserUtil.parse(CCJSqlParserUtil.java:38)
at org.springframework.data.jpa.repository.query.JSqlParserQueryEnhancer.detectParsedType(JSqlParserQueryEnhancer.java:83)
... 75 common frames omitted
Caused by: net.sf.jsqlparser.parser.ParseException: Encountered unexpected token: "<=" <OP_MINORTHANEQUALS>
at line 1, column 1648.

Was expecting one of:

"&"
")"
"."
"::"
"<<"
">>"
"COLLATE"
"["
"^"
"|"

at net.sf.jsqlparser.parser.CCJSqlParser.generateParseException(CCJSqlParser.java:31234)
at net.sf.jsqlparser.parser.CCJSqlParser.jj_consume_token(CCJSqlParser.java:31067)
at net.sf.jsqlparser.parser.CCJSqlParser.AndExpression(CCJSqlParser.java:9663)
at net.sf.jsqlparser.parser.CCJSqlParser.OrExpression(CCJSqlParser.java:9609)
at net.sf.jsqlparser.parser.CCJSqlParser.XorExpression(CCJSqlParser.java:9591)
at net.sf.jsqlparser.parser.CCJSqlParser.Expression(CCJSqlParser.java:9562)
at net.sf.jsqlparser.parser.CCJSqlParser.WhenThenSearchCondition(CCJSqlParser.java:13048)
at net.sf.jsqlparser.parser.CCJSqlParser.CaseWhenExpression(CCJSqlParser.java:12940)
at net.sf.jsqlparser.parser.CCJSqlParser.PrimaryExpression(CCJSqlParser.java:11112)
at net.sf.jsqlparser.parser.CCJSqlParser.BitwiseXor(CCJSqlParser.java:10981)
at net.sf.jsqlparser.parser.CCJSqlParser.MultiplicativeExpression(CCJSqlParser.java:10934)
at net.sf.jsqlparser.parser.CCJSqlParser.AdditiveExpression(CCJSqlParser.java:10897)
at net.sf.jsqlparser.parser.CCJSqlParser.BitwiseAndOr(CCJSqlParser.java:10843)

通过 JPA原代码 分析，发现QueryEnhancerFactory中有一个代码 ，会去找JSqlParser

private static boolean isJSqlParserInClassPath() { try { Class.forName("net.sf.jsqlparser.parser.JSqlParser", false, QueryEnhancerFactory.class.getClassLoader()); LOG.info("JSqlParser is in classpath. If applicable JSqlParser will be used."); return true; } catch (ClassNotFoundException e) { return false; } }

所以，为了不让JPA使用JSqlParser，在SpringBoot启动时，增加特殊处理代码

public static void main(String[] args) { try { QueryEnhancerFactory.forQuery(null) ; } catch(Exception e) { // just init class QueryEnhancerFactory, ignore anything } try { Field JSQLPARSER_IN_CLASSPATH = QueryEnhancerFactory.class.getDeclaredField("JSQLPARSER_IN_CLASSPATH") ; Field modifierField = Field.class.getDeclaredField("modifiers") ; modifierField.setAccessible(true); modifierField.setInt(JSQLPARSER_IN_CLASSPATH, JSQLPARSER_IN_CLASSPATH.getModifiers() & ~Modifier.FINAL); JSQLPARSER_IN_CLASSPATH.setAccessible(true); JSQLPARSER_IN_CLASSPATH.setBoolean(null, true); } catch(Exception e) { log.error(e.getMessage(), e) ; } SpringApplication.run(PmsApplication.class, args); log.info("Start Success"); }

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