frames中的文件装载

博客给出了一段JavaScript代码window.parent.document(\frame名\).location=\xxx.html\,用于操作父窗口中指定框架的链接,后续内容待补充。

window.parent.document("frame名").location="xxx.html"

以后再补充

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [com/baomidou/mybatisplus/autoconfigure/MybatisPlusAutoConfiguration.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 [D:\智能旅游\tourism\vue3_tourism_backend-master\target\classes\mapper\BarrageMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [D:\智能旅游\tourism\vue3_tourism_backend-master\target\classes\mapper\BarrageMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.xiaobaitiao.springbootinit.model.entity.Barrage'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.xiaobaitiao.springbootinit.model.entity.Barrage at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.22.jar:5.3.22] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.22.jar:5.3.22] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.2.jar:2.7.2] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.2.jar:2.7.2] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.2.jar:2.7.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.2.jar:2.7.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.2.jar:2.7.2] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.2.jar:2.7.2] at com.xiaobaitiao.springbootinit.MainApplication.main(MainApplication.java:24) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.7.2.jar:2.7.2] Caused by: 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 [D:\智能旅游\tourism\vue3_tourism_backend-master\target\classes\mapper\BarrageMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [D:\智能旅游\tourism\vue3_tourism_backend-master\target\classes\mapper\BarrageMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.xiaobaitiao.springbootinit.model.entity.Barrage'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.xiaobaitiao.springbootinit.model.entity.Barrage at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.3.22.jar:5.3.22] at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-5.3.22.jar:5.3.22] ... 24 common frames omitted Caused by: org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [D:\智能旅游\tourism\vue3_tourism_backend-master\target\classes\mapper\BarrageMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [D:\智能旅游\tourism\vue3_tourism_backend-master\target\classes\mapper\BarrageMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.xiaobaitiao.springbootinit.model.entity.Barrage'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.xiaobaitiao.springbootinit.model.entity.Barrage at com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean.buildSqlSessionFactory(MybatisSqlSessionFactoryBean.java:576) ~[mybatis-plus-extension-3.5.2.jar:3.5.2] at com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean.afterPropertiesSet(MybatisSqlSessionFactoryBean.java:445) ~[mybatis-plus-extension-3.5.2.jar:3.5.2] at com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean.getObject(MybatisSqlSessionFactoryBean.java:609) ~[mybatis-plus-extension-3.5.2.jar:3.5.2] at com.baomidou.mybatisplus.autoconfigure.MybatisPlusAutoConfiguration.sqlSessionFactory(MybatisPlusAutoConfiguration.java:218) ~[mybatis-plus-boot-starter-3.5.2.jar:3.5.2] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.22.jar:5.3.22] ... 25 common frames omitted Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'file [D:\智能旅游\tourism\vue3_tourism_backend-master\target\classes\mapper\BarrageMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.xiaobaitiao.springbootinit.model.entity.Barrage'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.xiaobaitiao.springbootinit.model.entity.Barrage at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:123) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:95) ~[mybatis-3.5.9.jar:3.5.9] at com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean.buildSqlSessionFactory(MybatisSqlSessionFactoryBean.java:574) ~[mybatis-plus-extension-3.5.2.jar:3.5.2] ... 33 common frames omitted Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.xiaobaitiao.springbootinit.model.entity.Barrage'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.xiaobaitiao.springbootinit.model.entity.Barrage at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:118) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:263) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:254) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:246) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:119) ~[mybatis-3.5.9.jar:3.5.9] ... 35 common frames omitted Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.xiaobaitiao.springbootinit.model.entity.Barrage'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.xiaobaitiao.springbootinit.model.entity.Barrage at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:120) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.builder.BaseBuilder.resolveAlias(BaseBuilder.java:149) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:116) ~[mybatis-3.5.9.jar:3.5.9] ... 39 common frames omitted Caused by: java.lang.ClassNotFoundException: Cannot find class: com.xiaobaitiao.springbootinit.model.entity.Barrage at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:196) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:89) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.io.Resources.classForName(Resources.java:261) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:116) ~[mybatis-3.5.9.jar:3.5.9] ... 41 common frames omitted
05-19
### MyBatis 类型别名解析失败的原因分析 当遇到 `MyBatis` 中无法解析类型别名 `'com.xiaobaitiao.springbootinit.model.entity.Barrage'` 的问题时,通常是因为以下几个原因之一: #### 1. **未注册类型别名** 如果类 `Barrage` 所在的包路径未被扫描到,则可能导致其未能成功注册为类型别名。默认情况下,`MyBatis` 只会自动扫描配置文件中指定的基础包下的实体类[^1]。 #### 2. **缺少依赖或编译错误** 当项目运行环境中缺失该类对应的 `.class` 文件或者存在编译错误时,也会抛出 `ClassNotFoundException` 异常。这可能由于构建工具(如 Maven 或 Gradle)未正确加载依赖项所致[^2]。 #### 解决方案 以下是几种常见的解决方案及其具体实现方法: --- ### 方法一:手动注册类型别名 如果希望显式地将某个特定类作为类型别名使用,可以在 `mybatis-config.xml` 配置文件中通过 `<typeAliases>` 节点定义它: ```xml <configuration> <typeAliases> <!-- 单独定义 --> <typeAlias alias="barrage" type="com.xiaobaitiao.springbootinit.model.entity.Barrage"/> <!-- 自动扫描整个包下所有类并为其创建简短名称形式的小写别名 --> <package name="com.xiaobaitiao.springbootinit.model.entity"/> </typeAliases> </configuration> ``` 此方式适用于需要精确控制哪些类应该成为全局可用别名的情况[^3]。 --- ### 方法二:确认基础包设置正确无误 确保已在 Spring Boot 应用程序启动类上标注了正确的组件扫描范围;对于基于 XML 的传统风格应用而言,则需核实是否存在如下类似的声明语句来指示框架去寻找候选对象所在的目录结构位置。 例如,在 Java 注解驱动模式下可以这样操作: ```java @SpringBootApplication(scanBasePackages = {"com.xiaobaitiao.springbootinit"}) public class Application { public static void main(String[] args){ SpringApplication.run(Application.class, args); } } ``` 而在纯 MyBatis 场景里则可能是这样的形式: ```properties mybatis.type-aliases-package=com.xiaobaitiao.springbootinit.model.entity ``` 以上两种途径均能有效促进系统识别目标领域模型实例,并赋予它们简洁易记的名字以便后续引用调用之便[^4]. --- ### 方法三:验证 ClassLoader 是否正常工作 有时即使一切看起来都已妥善安排完毕但仍会出现找不到对应资源的现象,这时就需要进一步排查 JVM 加载机制方面是否有异常状况发生。可以通过打印日志消息查看当前线程上下文中实际使用的类装载器是否具备访问权限以及能否定位至预期地址处获取所需数据单元副本等内容来进行诊断处理[^5]: ```java System.out.println(Thread.currentThread().getContextClassLoader()); try{ Thread.currentThread().getContextClassLoader().loadClass("com.xiaobaitiao.springbootinit.model.entity.Barrage"); }catch(ClassNotFoundException e){ System.err.println(e.getMessage()); } ``` --- ### 总结 综上所述,针对此类问题可以从多个角度出发逐一排除潜在隐患直至找到根本原因所在为止。无论是调整配置参数还是优化代码逻辑设计思路都需要紧密结合实际情况灵活运用各种技巧手段才能达到理想效果。
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