异常信息：
org.apache.ibatis.exceptions.PersistenceException:
### Error updating database. Cause: org.apache.ibatis.binding.BindingException: Parameter 'lastName' not found. Available parameters are [1, 0, param1, param2]
### Cause: org.apache.ibatis.binding.BindingException: Parameter 'lastName' not found. Available parameters are [1, 0, param1, param2]
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:200)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:62)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
at com.sun.proxy.$Proxy3.updateEmpsTestSet(Unknown Source)
at com.lesson.mybatis.test.MybatisTest.test05(MybatisTest.java:140)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.apache.ibatis.binding.BindingException: Parameter 'lastName' not found. Available parameters are [1, 0, param1, param2]
at org.apache.ibatis.binding.MapperMethod$ParamMap.get(MapperMethod.java:202)
at org.apache.ibatis.scripting.xmltags.DynamicContext$ContextAccessor.getProperty(DynamicContext.java:115)
at org.apache.ibatis.ognl.OgnlRuntime.getProperty(OgnlRuntime.java:2671)
at org.apache.ibatis.ognl.ASTProperty.getValueBody(ASTProperty.java:114)
at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)
at org.apache.ibatis.ognl.ASTNotEq.getValueBody(ASTNotEq.java:50)
at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)
at org.apache.ibatis.ognl.ASTAnd.getValueBody(ASTAnd.java:61)
at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:470)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:434)
at org.apache.ibatis.scripting.xmltags.OgnlCache.getValue(OgnlCache.java:44)
at org.apache.ibatis.scripting.xmltags.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:32)
at org.apache.ibatis.scripting.xmltags.IfSqlNode.apply(IfSqlNode.java:34)
at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:33)
at org.apache.ibatis.scripting.xmltags.TrimSqlNode.apply(TrimSqlNode.java:55)
at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:33)
at org.apache.ibatis.scripting.xmltags.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:41)
at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:292)
at org.apache.ibatis.executor.statement.BaseStatementHandler.<init>(BaseStatementHandler.java:64)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.<init>(PreparedStatementHandler.java:40)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.<init>(RoutingStatementHandler.java:46)
at org.apache.ibatis.session.Configuration.newStatementHandler(Configuration.java:558)
at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:48)
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)
... 27 more
配置文件：
<update id="updateEmpsTestSet">
UPDATE tb_employees
<set>
<if test="lastName != null and lastName != """>
lastName = #{param1.lastName},
</if>
<if test="gender != null and gender != """>
gender = #{param1.gender},
</if>
<if test="email != null and email != """>
email = #{param1.email}
</if>
</set>
<!-- <trim prefix="set" suffixOverrides=",">
<if test="lastName != null and lastName != """>
lastName = #{param1.lastName},
</if>
<if test="gender != null and gender != """>
gender = #{param1.gender},
</if>
<if test="email != null and email != """>
email = #{param1.email}
</if>
</trim> -->
WHERE id = #{param2}
</update>
接口方法：
public int updateEmpsTestSet(Employee employee,Long id);
测试方法：
@Test
public void test05() {
//一个SqlSession代表和数据库的一次会话,用完之后必须关闭
SqlSession session = null;
try {
session = SessionUtil.getSession();
EmployeeMapper mapper = session.getMapper(EmployeeMapper.class);
Employee employee = new Employee();
employee.setLastName("Pandas");
employee.setGender('男');
employee.setEmail("panda@163.com");
int index = mapper.updateEmpsTestSet(employee,new Long(7));
System.out.println("==============================>"+index);
session.commit();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
if (session != null) {
SessionUtil.closeSession(session);
}
}
}
