java值byte类型长度超出

谁借莪１个温暖的怀抱￠ 2023-02-20 03:08 10阅读 0赞

本人遇到的问题是mysql字段定义的是tinyint(3) unsigned 对应的java里面的是byte。

**一、遇到的问题是这样的：**

\[RemoteTestNG\] detected TestNG version 6.9.10  
log4j: Parsing for \[root\] with value=\[DEBUG,D,E,stepLog\].  
log4j: Level token is \[DEBUG\].  
log4j: Category root set to DEBUG  
log4j: Parsing appender named "D".  
log4j: Parsing layout options for "D".  
log4j: Setting property \[conversionPattern\] to \[%-d\{yyyy-MM-dd HH:mm:ss\} \[ %t:%r \] - \[ %p \] %m%n\].  
log4j: End of parsing for "D".  
log4j: Setting property \[append\] to \[true\].  
log4j: Setting property \[threshold\] to \[DEBUG\].  
log4j: Setting property \[file\] to \[logs/logs.log\].  
log4j: setFile called: logs/logs.log, true  
log4j: setFile ended  
log4j: Appender \[D\] to be rolled at midnight.  
log4j: Parsed "D" options.  
log4j: Parsing appender named "E".  
log4j: Parsing layout options for "E".  
log4j: Setting property \[conversionPattern\] to \[%-d\{yyyy-MM-dd HH:mm:ss\} \[ %t:%r \] - \[ %p \] %m%n\].  
log4j: End of parsing for "E".  
log4j: Setting property \[append\] to \[true\].  
log4j: Setting property \[threshold\] to \[ERROR\].  
log4j: Setting property \[file\] to \[logs/error.log\].  
log4j: setFile called: logs/error.log, true  
log4j: setFile ended  
log4j: Appender \[E\] to be rolled at midnight.  
log4j: Parsed "E" options.  
log4j: Parsing appender named "stepLog".  
log4j: Parsing layout options for "stepLog".  
log4j: Setting property \[conversionPattern\] to \[%m%n\].  
log4j: End of parsing for "stepLog".  
log4j: Setting property \[file\] to \[logs/stepLog.log\].  
log4j: Setting property \[append\] to \[true\].  
log4j: Setting property \[threshold\] to \[INFO\].  
log4j: setFile called: logs/stepLog.log, true  
log4j: setFile ended  
log4j: Appender \[stepLog\] to be rolled at midnight.  
log4j: Parsed "stepLog" options.  
log4j: Finished configuring.  
\[TestNG\] Running:  
C:\\Users\\lenovo\\AppData\\Local\\Temp\\testng-eclipse-1408996642\\testng-customsuite.xml

Begin executing test method\[com.xueersi.qa.continuation.testcase.CouponCouponGetCouponListTest . Coupon\_Coupon\_getCouponList\_test ()\] in thread\[1\].

Logging initialized using 'class org.apache.ibatis.logging.stdout.StdOutImpl' adapter.  
PooledDataSource forcefully closed/removed all connections.  
PooledDataSource forcefully closed/removed all connections.  
PooledDataSource forcefully closed/removed all connections.  
PooledDataSource forcefully closed/removed all connections.  
Opening JDBC Connection  
Created connection 1877986974.  
Setting autocommit to false on JDBC Connection \[com.mysql.jdbc.JDBC4Connection@6fefce9e\]  
org.apache.ibatis.exceptions.PersistenceException:  
\#\#\# Error querying database. Cause: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'type' from result set. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLDataException: '255' in column '4' is outside valid range for the datatype TINYINT.  
\#\#\# The error may exist in com/xes/qa/apitest/jcsj/db/mapper/Xes\_couponsMapper.java (best guess)  
\#\#\# The error may involve com.xes.qa.apitest.jcsj.db.mapper.Xes\_couponsMapper.getcouponList  
\#\#\# The error occurred while handling results  
\#\#\# SQL: SELECT id,name,code,type,valid\_start\_date,valid\_end\_date,face\_value,order\_full\_price,receive\_type,num,receive\_start\_time,receive\_stime,receive\_end\_time,receive\_etime, \`status\`,description,creater\_id,create\_time,modify\_time FROM xes\_coupons WHERE \`receive\_type\` = 7 AND \`status\` = 3 AND \`valid\_start\_date\` <= SYSDATE() AND \`valid\_end\_date\` >= SYSDATE() AND \`receive\_stime\` <= unix\_timestamp(now()) AND \`receive\_etime\` >= unix\_timestamp(now()) ORDER BY \`face\_value\` DESC, \`id\` DESC;  
\#\#\# Cause: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'type' from result set. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLDataException: '255' in column '4' is outside valid range for the datatype TINYINT.  
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)  
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:122)  
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:113)  
at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:122)  
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:64)  
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53)  
at com.sun.proxy.$Proxy25.getcouponList(Unknown Source)  
at com.xes.qa.apitest.jcsj.db.dbutils.DbUtils.getXesCoupuonsList(DbUtils.java:43)  
at com.xueersi.qa.continuation.testcase.CouponCouponGetCouponListTest.Coupon\_Coupon\_getCouponList\_test(CouponCouponGetCouponListTest.java:115)  
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)  
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  
at java.lang.reflect.Method.invoke(Method.java:498)  
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:86)  
at org.testng.internal.MethodInvocationHelper$1.runTestMethod(MethodInvocationHelper.java:197)  
at org.simfast.simpletester.unitils.SimpleTesterTestNG.run(SimpleTesterTestNG.java:244)  
at org.testng.internal.MethodInvocationHelper.invokeHookable(MethodInvocationHelper.java:209)  
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)  
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:820)  
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1128)  
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)  
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)  
at org.testng.TestRunner.privateRun(TestRunner.java:782)  
at org.testng.TestRunner.run(TestRunner.java:632)  
at org.testng.SuiteRunner.runTest(SuiteRunner.java:366)  
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361)  
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319)  
at org.testng.SuiteRunner.run(SuiteRunner.java:268)  
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)  
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)  
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1244)  
at org.testng.TestNG.runSuitesLocally(TestNG.java:1169)  
at org.testng.TestNG.run(TestNG.java:1064)  
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)  
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)  
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)  
Caused by: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'type' from result set. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLDataException: '255' in column '4' is outside valid range for the datatype TINYINT.  
at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:68)  
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.applyAutomaticMappings(DefaultResultSetHandler.java:434)  
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:344)  
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:298)  
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:273)  
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:246)  
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:160)  
at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:63)  
at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:78)  
at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62)  
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:303)  
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:154)  
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:102)  
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:82)  
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:120)  
... 34 more  
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLDataException: '255' in column '4' is outside valid range for the datatype TINYINT.  
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)  
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)  
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)  
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)  
at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)  
at com.mysql.jdbc.Util.getInstance(Util.java:387)  
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926)  
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:898)  
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:887)  
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:862)  
at com.mysql.jdbc.ResultSetImpl.throwRangeException(ResultSetImpl.java:7091)  
at com.mysql.jdbc.ResultSetImpl.getByteFromString(ResultSetImpl.java:1712)  
at com.mysql.jdbc.ResultSetImpl.getByte(ResultSetImpl.java:1659)  
at com.mysql.jdbc.ResultSetImpl.getByte(ResultSetImpl.java:1671)  
at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)  
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  
at java.lang.reflect.Method.invoke(Method.java:498)  
at org.apache.ibatis.logging.jdbc.ResultSetLogger.invoke(ResultSetLogger.java:68)  
at com.sun.proxy.$Proxy28.getByte(Unknown Source)  
at org.apache.ibatis.type.ByteTypeHandler.getNullableResult(ByteTypeHandler.java:37)  
at org.apache.ibatis.type.ByteTypeHandler.getNullableResult(ByteTypeHandler.java:26)  
at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:66)  
... 48 more  
Resetting autocommit to true on JDBC Connection \[com.mysql.jdbc.JDBC4Connection@6fefce9e\]  
Closing JDBC Connection \[com.mysql.jdbc.JDBC4Connection@6fefce9e\]  
Returned connection 1877986974 to pool.  
\[Failed\] CouponCouponGetCouponListTest.Coupon\_Coupon\_getCouponList\_test(org.simfast.simpletester.core.TestData)\[pri:0, instance:com.xueersi.qa.continuation.testcase.CouponCouponGetCouponListTest@5e316c74\]  
Report directory is :D:\\sourcecode\\new-test\\target\\SimpleTester  
PooledDataSource forcefully closed/removed all connections.  
FAILED: Coupon\_Coupon\_getCouponList\_test(org.simfast.simpletester.core.TestData@d278d2b)  
java.lang.NullPointerException  
at com.xueersi.qa.continuation.testcase.CouponCouponGetCouponListTest.Coupon\_Coupon\_getCouponList\_test(CouponCouponGetCouponListTest.java:120)  
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)  
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  
at java.lang.reflect.Method.invoke(Method.java:498)  
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:86)  
at org.testng.internal.MethodInvocationHelper$1.runTestMethod(MethodInvocationHelper.java:197)  
at org.simfast.simpletester.unitils.SimpleTesterTestNG.run(SimpleTesterTestNG.java:244)  
at org.testng.internal.MethodInvocationHelper.invokeHookable(MethodInvocationHelper.java:209)  
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)  
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:820)  
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1128)  
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)  
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)  
at org.testng.TestRunner.privateRun(TestRunner.java:782)  
at org.testng.TestRunner.run(TestRunner.java:632)  
at org.testng.SuiteRunner.runTest(SuiteRunner.java:366)  
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361)  
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319)  
at org.testng.SuiteRunner.run(SuiteRunner.java:268)  
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)  
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)  
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1244)  
at org.testng.TestNG.runSuitesLocally(TestNG.java:1169)  
at org.testng.TestNG.run(TestNG.java:1064)  
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)  
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)  
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

===============================================  
Default test  
Tests run: 1, Failures: 1, Skips: 0  
===============================================

===============================================  
Default suite  
Total tests run: 1, Failures: 1, Skips: 0  
===============================================

\[TestNG\] Time taken by \[FailedReporter passed=0 failed=0 skipped=0\]: 6 ms  
\[TestNG\] Time taken by org.testng.reporters.XMLReporter@77b52d12: 6 ms  
\[TestNG\] Time taken by org.testng.reporters.JUnitReportReporter@15975490: 5 ms  
\[TestNG\] Time taken by org.testng.reporters.EmailableReporter2@4157f54e: 3 ms  
\[TestNG\] Time taken by org.testng.reporters.SuiteHTMLReporter@735f7ae5: 16 ms  
\[TestNG\] Time taken by org.testng.reporters.jq.Main@2c6a3f77: 19 ms

之前调通的代码一运行突然报了这样一堆的错，出错了不要紧看下问题出在哪里，于是仔细观察一番之后发现了这一堆报错中的关键信息，如下：

![format_png][]

确定问题之后就到代码中去看看呗，代码如下：

mapper里面配置的代码如下：

![format_png 1][]

model里面对应数据库字段的代码如下：

![format_png 2][]

看来看去很简单的代码嘛，没什么错，这时候想到去数据库里看看吧

![format_png 3][]

询问研发老师，果然这里的字段他们调整了，增加了101,102,255，看到255再回去看报错也是跟255有关系的，基本可以确定问题引发的原因了。

那么怎么解决呢？

**二、解决办法**

要解决问题得先理解下错误的具体原因：

1. 网上查询资料对jdbcType这个参数的描述不多，作用不清楚，大概的意思是“jdbcType这个参数的应用场景就是，当执行mapping文件的时候，有个映射的参数为空，那么无法确定他的类型，这个时候就需要jdbcType来确定类型“。

2. 既然jdbc Type是备用的那就不考虑调整了，于是解决思路放到了model里面的java代码上，获取到的资料如下：

mysql中的tinyint和java中的byte的数值范围是一样的（-128~127）,如果你能保证自己存储的数值不会超过这个最大值是可以的，而且tinyint只有1字节。

既然数据库使用tinyint，肯定取值在tinyint的范围内。结果映射的时候是可以指定javaType的。 没必要使用默认的byte，完全可以用int，Integer。

看到这里基本就确定了问题的解决办法，其实就是byte类型是-128~127，而开发在库中新加入的255超出了这个范围所以导致出错，因此修改model代码如下：

![format_png 4][]

调整完成再运行，果然问题解决了。

[format_png]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTE5MTQ0MC8yMDE4MDgvMTE5MTQ0MC0yMDE4MDgwMzE1NTI1MDkwOC0xNDg5MjU0ODg2LnBuZw?x-oss-process=image/format,png
[format_png 1]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTE5MTQ0MC8yMDE4MDgvMTE5MTQ0MC0yMDE4MDgwMzE1NTQzMDIyMS0xMDgzODMzOTUzLnBuZw?x-oss-process=image/format,png
[format_png 2]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTE5MTQ0MC8yMDE4MDgvMTE5MTQ0MC0yMDE4MDgwMzE1NTUyMDk0MC05NDk2MDUzNTkucG5n?x-oss-process=image/format,png
[format_png 3]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTE5MTQ0MC8yMDE4MDgvMTE5MTQ0MC0yMDE4MDgwMzE1NTcwMjU5NS0xMzgwNjk3OTIwLnBuZw?x-oss-process=image/format,png
[format_png 4]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTE5MTQ0MC8yMDE4MDgvMTE5MTQ0MC0yMDE4MDgwMzE2MDY1Mjc4Ni0xNzA2NTc3Nzk4LnBuZw?x-oss-process=image/format,png