最近在和朋友一起写一个web应用程序，是一个校园管理系统。在用IDEA接收朋友那部分的代码，进行运行后，遇到了UnsatisfiedDependencyException的异常，于是我翻到最后一个嵌套异常进行查询，最后一个情况如下：
nested exception is org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; 文件提前结束。
并不是很能理解这个异常的意思，于是上网进行查询，说是我的mapper.xml文件有>=等符号的错误，但是我并没有检查到有什么问题（因为根本没用>=等需要用xml语言代替的符号呜呜呜）。还有的说是我的xml文件的头信息错误了，我也根据他们的要求进行更换，还是不能解决问题。希望有大佬能指导我一下怎么办，谢谢谢谢（说一万遍）
以下是全部报错信息：（请不要关注文件名，存在我的学习资料里面的哈哈哈）
2023-09-19 20:39:57.597 INFO 10948 --- [ main] c.c.CampusAssistantApplication : No active profile set, falling back to 1 default profile: "default"
2023-09-19 20:39:58.944 INFO 10948 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2023-09-19 20:39:58.955 INFO 10948 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2023-09-19 20:39:58.956 INFO 10948 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.60]
2023-09-19 20:39:59.068 INFO 10948 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2023-09-19 20:39:59.068 INFO 10948 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1400 ms
2023-09-19 20:39:59.294 WARN 10948 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'centreController': Unsatisfied dependency expressed through field 'studentService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'studentServiceImpl': Unsatisfied dependency expressed through field 'studentMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'studentMapper' defined in file [F:\BaiduNetdiskDownload\最新14天学会JavaWeb（高效学习版）\JavaWeb-资料\day11-会话技术\代码\smart-campus-system\campus_assistant\target\classes\com\campus_assistant\mapper\StudentMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\BaiduNetdiskDownload\最新14天学会JavaWeb（高效学习版）\JavaWeb-资料\day11-会话技术\代码\smart-campus-system\campus_assistant\target\classes\com\campus_assistant\mapper\xml\MealCardMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; 文件提前结束。
2023-09-19 20:39:59.296 INFO 10948 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2023-09-19 20:39:59.306 INFO 10948 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-09-19 20:39:59.326 ERROR 10948 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'centreController': Unsatisfied dependency expressed through field 'studentService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'studentServiceImpl': Unsatisfied dependency expressed through field 'studentMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'studentMapper' defined in file [F:\BaiduNetdiskDownload\最新14天学会JavaWeb（高效学习版）\JavaWeb-资料\day11-会话技术\代码\smart-campus-system\campus_assistant\target\classes\com\campus_assistant\mapper\StudentMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [F:\BaiduNetdiskDownload\最新14天学会JavaWeb（高效学习版）\JavaWeb-资料\day11-会话技术\代码\smart-campus-system\campus_assistant\target\classes\com\campus_assistant\mapper\xml\MealCardMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; 文件提前结束。
【以下回答由 GPT 生成】
问题分析： 根据报错信息，UnsatisfiedDependencyException异常是由于依赖注入失败导致的，而嵌套异常是由于构建XML文档实例时发生了错误。这个错误是因为在解析XML文件时出现了解析错误。
解决方案： 1. 首先，确保你的XML文件格式是正确的，没有缺少结束标签或者其他语法错误。可以使用在线的XML验证工具（如https://www.xmlvalidation.com/）对XML文件进行验证，查看是否存在格式错误。
如果XML文件格式没有问题，那么考虑检查XML文件的编码格式是否正确。请确保XML文件的编码与项目的编码一致。可以通过修改文件的编码方式来解决这个问题。例如，如果项目使用UTF-8编码，那么请确保XML文件的编码方式也是UTF-8。
检查XML文件的路径是否正确。确保XML文件的路径在项目配置中正确指定。可以在项目中的配置文件中查看相关配置。
检查项目的依赖是否正确配置。可能是缺少了某些依赖或者依赖的版本不匹配。可以通过检查项目的pom.xml文件（如果是使用Maven管理项目）或者相关配置文件中的依赖信息来确认依赖是否正确。
如果以上步骤都没有解决问题，可以尝试重新构建项目并清理构建目录。有时候可能是由于构建过程中的一些缓存文件导致的问题。
请尝试以上解决方案，并根据情况逐步排查问题。如果问题仍然存在，请提供更多的信息，以便我们能够更准确地帮助你解决问题。