报错:java.lang.IllegalArgumentException: Parameter ‘directory‘ is not a directory in android

本文介绍了解决Android项目在rebuild过程中遇到的java.lang.IllegalArgumentException错误的方法。具体步骤包括:删除.gradle文件夹,清理缓存并重启Android Studio,最后重新构建项目。
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springSecurityFilterChain' defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.servlet.Filter]: Factory method 'springSecurityFilterChain' threw exception; nested exception is java.lang.IllegalArgumentException: Parameter Maps collection does not contain value for java.lang.Integer at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:769) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1313) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302) at cn.wthink.ws.MainApplication.main(MainApplication.java:12) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.servlet.Filter]: Factory method 'springSecurityFilterChain' threw exception; nested exception is java.lang.IllegalArgumentException: Parameter Maps collection does not contain value for java.lang.Integer at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ... 27 common frames omitted Caused by: java.lang.IllegalArgumentException: Parameter Maps collection does not contain value for java.lang.Integer at com.baomidou.mybatisplus.core.MybatisConfiguration$StrictMap.get(MybatisConfiguration.java:448) at com.baomidou.mybatisplus.core.MybatisConfiguration.getParameterMap(MybatisConfiguration.java:295) at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementParameterMap(MapperBuilderAssistant.java:368) at org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderAssistant.java:291) at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:113) at org.apache.ibatis.session.Configuration.lambda$buildAllStatements$2(Configuration.java:882) at java.base/java.util.Collection.removeIf(Collection.java:544) at org.apache.ibatis.session.Configuration.buildAllStatements(Configuration.java:881) at com.baomidou.mybatisplus.core.MybatisConfiguration.hasStatement(MybatisConfiguration.java:336) at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:853) at org.apache.ibatis.binding.MapperMethod$SqlCommand.resolveMappedStatement(MapperMethod.java:257) at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:227) at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.<init>(MybatisMapperMethod.java:51) at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.lambda$cachedInvoker$0(MybatisMapperProxy.java:111) at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705) at com.baomidou.mybatisplus.core.toolkit.CollectionUtils.computeIfAbsent(CollectionUtils.java:117) at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.cachedInvoker(MybatisMapperProxy.java:98) at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:89) at com.sun.proxy.$Proxy101.selectOne(Unknown Source) at com.baomidou.mybatisplus.extension.service.impl.ServiceImpl.getOne(ServiceImpl.java:201) at com.baomidou.mybatisplus.extension.service.IService.getOne(IService.java:229) at cn.wthink.ws.service.impl.UserServiceImpl.findUserByUsername(UserServiceImpl.java:52) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) at com.sun.proxy.$Proxy103.findUserByUsername(Unknown Source) at cn.wthink.ws.security.UserDetailsServiceImpl.loadUserByUsername(UserDetailsServiceImpl.java:20) at cn.wthink.ws.security.SecurityConfig.configure(SecurityConfig.java:50) at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.getHttp(WebSecurityConfigurerAdapter.java:217) at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.init(WebSecurityConfigurerAdapter.java:315) at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter.init(WebSecurityConfigurerAdapter.java:93) at cn.wthink.ws.security.SecurityConfig$$EnhancerBySpringCGLIB$$4cbe1f62.init(<generated>) at org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder.init(AbstractConfiguredSecurityBuilder.java:338) at org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder.doBuild(AbstractConfiguredSecurityBuilder.java:300) at org.springframework.security.config.annotation.AbstractSecurityBuilder.build(AbstractSecurityBuilder.java:38) at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.springSecurityFilterChain(WebSecurityConfiguration.java:127) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ... 28 common frames omitted 进程已结束,退出代码为 0 这是什么错误怎么解决
09-30
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'masterDataSource' defined in class path resource [com/ruoyi/framework/config/DruidConfig.class]: Unsatisfied dependency expressed through method 'masterDataSource' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'druidProperties': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.druid.initialSize' in value "${spring.datasource.druid.initialSize}" at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:794) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:532) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:336) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:209) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:904) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:781) ... 80 common frames omitted Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'druidProperties': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.druid.initialSize' in value "${spring.datasource.druid.initialSize}" at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:414) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:336) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:209) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:904) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:781) ... 94 common frames omitted Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.druid.initialSize' in value "${spring.datasource.druid.initialSize}" at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:180) at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126) at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239) at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210) at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:191) at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:937) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1332) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:710) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:693) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:408) ... 106 common frames omitted
最新发布
10-24
java.lang.IllegalArgumentException: Parameter 'directory' is not a directory at org.apache.commons.io.FileUtils.listFiles(FileUtils.java:293) at org.apache.commons.io.FileUtils.listFiles(FileUtils.java:378) at com.bosssoft.hr.train.j2se.util.UtilsDemo.method4(UtilsDemo.java:133) at Test1.testUtilsDemo4(Test1.java:66) 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63) at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at org.junit.runners.ParentRunner.run(ParentRunner.java:413) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69) at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55)源码如下:public void method4(){ // 获取目录中的所有文件和子目录 Collection<File> files = FileUtils.listFiles(new File("com/bosssoft/hr/train/j2se/util"), new String[]{"*.java"},true); // 遍历文件和子目录 if (files != null) { for (File file : files) { if (file.isDirectory()) { log.info("Directory: " + file.getName()); } else { log.info("File: " + file.getName()); } } } }
07-14
<think>好的,我现在需要帮助用户解决在Java中合并单元格时出现的IllegalArgumentException和IllegalStateException错误。首先,我得仔细理解用户的问题。用户提到两个异常:一个是IllegalArgumentException,具体信息是“Minimum row number is 0”,另一个是IllegalStateException,关于合并区域的重叠。这两个异常在使用Apache POI处理Excel文件时比较常见,尤其是在操作合并单元格的时候。 首先,我应该回忆一下Apache POI的相关知识。合并单元格通常使用Sheet.addMergedRegion方法,该方法接受CellRangeAddress对象作为参数。CellRangeAddress的构造函数需要起始行、结束行、起始列、结束列这四个参数。行和列的索引是从0开始的,所以如果用户传入的行号或列号是负数,就会触发IllegalArgumentException,提示最小行号是0,因为行号不能小于0。 接下来,关于IllegalStateException,这通常发生在尝试合并已经被其他合并区域覆盖的单元格时。比如,如果一个合并区域已经包含了某个单元格,再次尝试合并包含该单元格的区域就会导致冲突,POI会抛出这个异常。这时候需要检查现有的合并区域,确保新合并的区域不与已有区域重叠。 现在,我需要考虑如何将这些信息组织成用户友好的解答。首先,应该解释这两个异常的原因,然后给出解决方法,最好附带示例代码。此外,用户可能需要知道如何预防这些错误,比如检查参数的有效性,或者在合并前验证区域是否重叠。 对于IllegalArgumentException的情况,示例代码中应该展示如何正确创建CellRangeAddress对象,确保行号和列号都是非负数,并且起始行不大于结束行,起始列不大于结束列。此外,添加异常处理逻辑,比如try-catch块,来捕获可能的错误,并给出提示信息。 对于IllegalStateException,解决方法包括在合并前遍历已有的合并区域,检查是否存在重叠。这可以通过比较新区域的起始和结束行、列与现有区域的范围来实现。如果发现重叠,需要调整合并区域或者跳过该操作。代码示例中可以展示如何获取所有已合并的区域,并进行检查。 另外,用户提供的引用中有提到注解和反射处理Excel导出时的类似问题,比如@ExcelField注解的使用。虽然用户当前的问题可能不直接涉及注解,但可能需要检查是否有注解配置错误导致的行列号不正确,比如未正确设置group属性或者排序字段,导致生成的行列号为负数。因此,在检查代码逻辑时,也应考虑这些配置是否正确。 此外,用户引用中的其他异常,如允许凭证时使用通配符的问题,虽然与当前问题无关,但提醒我要确保示例代码中的其他部分没有类似的问题,比如跨域配置,不过这可能不适用于当前Excel处理场景。 总结解决步骤: 1. 检查传入的行列号是否合法,确保不为负数,且起始不大于结束。 2. 在合并前检查是否存在重叠的合并区域。 3. 添加异常处理机制,捕获并处理可能出现的异常。 4. 确保使用正确的API,比如正确创建CellRangeAddress对象。 在示例代码中,可以编写一个合并单元格的工具方法,包含参数校验和区域重叠检查。同时,展示如何处理异常,比如记录错误或调整参数。 最后,需要生成相关问题,帮助用户进一步理解和解决可能遇到的问题,比如如何动态调整合并区域,如何调试行列号错误,或者如何处理大量数据时的性能优化等。</think>在处理Java中使用Apache POI合并Excel单元格时遇到$java.lang.IllegalArgumentException: Minimum row number is 0$和$java.lang.IllegalStateException$,以下是系统化的解决方案: --- ### 一、IllegalArgumentException错误分析 **错误原因**:使用$CellRangeAddress$时传递了非法行号/列号,如: 1. 行号/列号为负数 2. 起始行号>结束行号 3. 起始列号>结束列号 **解决方案**: 1. **参数校验**:添加行列号合法性检查 2. **异常捕获**:使用try-catch处理非法参数 ```java // 示例:安全的合并单元格方法 public static void safeMergeCells(Sheet sheet, int firstRow, int lastRow, int firstCol, int lastCol) { if (firstRow < 0 || lastRow < firstRow || firstCol < 0 || lastCol < firstCol) { throw new IllegalArgumentException("非法行列参数: rows("+firstRow+"-"+lastRow+"), cols("+firstCol+"-"+lastCol+")"); } try { sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol)); } catch (IllegalArgumentException e) { System.err.println("合并失败: " + e.getMessage()); } } ``` --- ### 二、IllegalStateException错误分析 **错误原因**:合并区域与其他已合并区域存在重叠[^3],例如: 1. 区域A合并了B2-C3 2. 尝试合并B3-D4(与A区域重叠) **解决方案**: ```java // 检查区域是否重叠 public static boolean isOverlap(Sheet sheet, CellRangeAddress newRegion) { for (int i = 0; i < sheet.getNumMergedRegions(); i++) { CellRangeAddress existing = sheet.getMergedRegion(i); if (existing.intersects(newRegion)) { return true; } } return false; } // 使用示例 CellRangeAddress newRegion = new CellRangeAddress(1, 3, 0, 2); if (!isOverlap(sheet, newRegion)) { sheet.addMergedRegion(newRegion); } else { System.out.println("检测到合并区域重叠"); } ``` --- ### 三、综合处理模板 ```java try { // 创建合并区域 CellRangeAddress region = new CellRangeAddress(2, 5, 1, 3); // 检查重叠 if (isOverlap(sheet, region)) { throw new IllegalStateException("检测到合并区域重叠"); } sheet.addMergedRegion(region); } catch (IllegalArgumentException e) { System.err.println("参数错误: " + e.getMessage()); } catch (IllegalStateException e) { System.err.println("状态异常: " + e.getMessage()); } ``` --- ### 四、常见错误场景 1. **注解配置错误**:使用@ExcelField注解时未正确设置group属性导致行列号计算错误[^3] 2. **动态生成区域**:循环中错误的行号累加导致负数 3. **模板文件损坏**:已有Excel文件存在隐藏的合并区域 ---
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