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JDBC异常抽象

Spring会将数据操作的异常转换为DataAccessException

 

解析错误码

1. SQLErrorCodeSQLExceptionTranslator
2. ErrorCode定义

• org/springframework/jdbc/support/sql-error-codes.xml
• classpath下的sql-error-codes.xml（定制）

org/springframework/jdbc/support/sql-error-codes.xml

Default SQL error codes for well-known databases. Can be overridden by definitions in a “sql-error-codes.xml” file in the root of the class path.

<bean id="H2" class="org.springframework.jdbc.support.SQLErrorCodes">
 <property name="badSqlGrammarCodes">
 <value>42000,42001,42101,42102,42111,42112,42121,42122,42132</value>
 </property>
 <property name="duplicateKeyCodes">
 <value>23001,23505</value>
 </property>
 <property name="dataIntegrityViolationCodes">
 <value>22001,22003,22012,22018,22025,23000,23002,23003,23502,23503,23506,23507,23513</value>
 </property>
 <property name="dataAccessResourceFailureCodes">
 <value>90046,90100,90117,90121,90126</value>
 </property>
 <property name="cannotAcquireLockCodes">
 <value>50200</value>
 </property>
</bean>
<bean id="MySQL" class="org.springframework.jdbc.support.SQLErrorCodes">
 <property name="databaseProductNames">
 <list>
 <value>MySQL</value>
 <value>MariaDB</value>
 </list>
 </property>
 <property name="badSqlGrammarCodes">
 <value>1054,1064,1146</value>
 </property>
 <property name="duplicateKeyCodes">
 <value>1062</value>
 </property>
 <property name="dataIntegrityViolationCodes">
 <value>630,839,840,893,1169,1215,1216,1217,1364,1451,1452,1557</value>
 </property>
 <property name="dataAccessResourceFailureCodes">
 <value>1</value>
 </property>
 <property name="cannotAcquireLockCodes">
 <value>1205</value>
 </property>
 <property name="deadlockLoserCodes">
 <value>1213</value>
 </property>
</bean>

org.springframework.jdbc.support.SQLErrorCodes

public class SQLErrorCodes {
	@Nullable
	private String[] databaseProductNames;
	private boolean useSqlStateForTranslation = false;
	private String[] badSqlGrammarCodes = new String[0];
	private String[] invalidResultSetAccessCodes = new String[0];
	private String[] duplicateKeyCodes = new String[0];
	private String[] dataIntegrityViolationCodes = new String[0];
	private String[] permissionDeniedCodes = new String[0];
	private String[] dataAccessResourceFailureCodes = new String[0];
	private String[] transientDataAccessResourceCodes = new String[0];
	private String[] cannotAcquireLockCodes = new String[0];
	private String[] deadlockLoserCodes = new String[0];
	private String[] cannotSerializeTransactionCodes = new String[0];
	@Nullable
	private CustomSQLErrorCodesTranslation[] customTranslations;
	@Nullable
	private SQLExceptionTranslator customSqlExceptionTranslator;
}

定制错误码

项目路径

└── src
 ├── main
 │ ├── java
 │ │ └── me
 │ │ └── zhongmingmao
 │ │ └── jdbcexception
 │ │ ├── CustomDuplicateKeyException.java
 │ │ └── JdbcExceptionApplication.java
 │ └── resources
 │ ├── application.properties
 │ ├── schema.sql
 │ └── sql-error-codes.xml
 └── test
 └── java
 └── me
 └── zhongmingmao
 └── jdbcexception
 └── JdbcExceptionApplicationTests.java

sql-error-codes.xml

src/main/resources/sql-error-codes.xml

<beans>
 <bean id="H2" class="org.springframework.jdbc.support.SQLErrorCodes">
 <property name="badSqlGrammarCodes">
 <value>42000,42001,42101,42102,42111,42112,42121,42122,42132</value>
 </property>
 <property name="duplicateKeyCodes">
 <value>23001,23505</value>
 </property>
 <property name="dataIntegrityViolationCodes">
 <value>22001,22003,22012,22018,22025,23000,23002,23003,23502,23503,23506,23507,23513</value>
 </property>
 <property name="dataAccessResourceFailureCodes">
 <value>90046,90100,90117,90121,90126</value>
 </property>
 <property name="cannotAcquireLockCodes">
 <value>50200</value>
 </property>
 <!-- 定制：错误码为23001或23505时，不会抛出Spring的DuplicateKeyException，而是抛出CustomDuplicateKeyException -->
 <property name="customTranslations">
 <bean class="org.springframework.jdbc.support.CustomSQLErrorCodesTranslation">
 <property name="errorCodes" value="23001,23505"/>
 <property name="exceptionClass" value="me.zhongmingmao.jdbcexception.CustomDuplicateKeyException"/>
 </bean>
 </property>
 </bean>
</beans>

CustomDuplicateKeyException

public class CustomDuplicateKeyException extends DuplicateKeyException {
 public CustomDuplicateKeyException(String msg) {
 super(msg);
 }
 public CustomDuplicateKeyException(String msg, Throwable cause) {
 super(msg, cause);
 }
}

单元测试

@RunWith(SpringRunner.class)
@SpringBootTest
public class JdbcExceptionApplicationTests {
 @Autowired
 private JdbcTemplate jdbcTemplate;
 @Test(expected = CustomDuplicateKeyException.class)
 public void testThrowCustomDuplicateKeyException() {
 jdbcTemplate.execute("INSERT INTO PERSON (ID, NAME) VALUES ('1', 'zhongmingmao')");
 jdbcTemplate.execute("INSERT INTO PERSON (ID, NAME) VALUES ('1', 'zhongmingwu')");
 }
}

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