1.org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘dataSource‘ defined in class path resource [applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property ‘driverName‘ of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property ‘driverName‘ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property ‘driverName‘ of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property ‘driverName‘ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
错误翻译过来就是：driverClassName 名我 com.mchange.v2.c3p0.ComboPooledDataSource不认得，改个我认识的，不然我罢工
解决:改名
driverClassName -->driverClass
url -->jdbcUrl
username -->user
password—>password
2.Caused by: java.lang.NoClassDefFoundError: javax/transaction/SystemException
解决：确少geronimo-jta jar包
3.Caused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property ‘dataSource‘ threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/datasource/TransactionAwareDataSourceProxy
解决：<!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="dataSource" ref="dataSource"></property>//这里不要用dataSource.改用sessionFactory
</bean>
4.Caused by: java.lang.ClassNotFoundException: org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy
解决：确少spring-jdbc-4.2.4.RELEASE.jar包
5.HTTP Status 500 - Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove ‘readOnly‘ marker from transaction definition.
严重: Exception occurred during processing request: Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove ‘readOnly‘ marker from transaction definition.
org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove ‘readOnly‘ marker from transaction definition.
解决：在service的类上加上@Transactional注解
6.Bean ‘sessionFactory‘; nested exception is org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Tag ‘property‘ must have a ‘name‘ attribute
Offending resource: class path resource [applicationContext.xml]
Caused by: org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Tag ‘property‘ must have a ‘name‘ attribute
Offending resource: class path resource [applicationContext.xml]
解决：<!-- 配置hibernate映射文件 -->时<property name="">的值忘记写了
7.Caused by: java.lang.ClassNotFoundException: com.mchange.v2.ser.Indirector”
解决：缺少mchange-commons-java-0.2.3.4.jar
8.java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
解决：缺少mysql驱动jar包
9.Could not load requested class : com.ssh.entity.User
解决：因为pojo里的文件，xml的文件以及数据库里的文件之间的映射有问题
Caused by: org.springframework.aop.framework.AopConfigException: Cannot proxy target class because CGLIB2 is not available. Add CGLIB to the class path or specify proxy interfaces.
解决：可能jar包重复也可能缺少cglib-2.1.3.jar
10.No result defined for action com.ssh.action.UserAction and result success
解决：是Struts.xml配置问题
11.Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: Emp is not mapped [from Emp]
解决：applicationContext中没有加载*.hbm.xml映射文件
12.Caused by: org.hibernate.boot.MappingException: Association [com.ssh.entity.Dept.setEmp] references an unmapped entity [com.ssh.entity.Dept.setEmp] : origin(null)
解决：是xxx.hbm.xml中<class name="com.ssh.entity.User" table="user">name中的路径应该是xxx实体类的路径，结果写到其他的实体类的路径了
13.Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘deptDaoImpl‘ defined in class path resource [applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property ‘sessionFactory‘ of bean class [com.ssh.dao.impl.DeptDaoImpl]: Bean property ‘sessionFactory‘ is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
解决:没有依赖注入
14.严重: Servlet.service() for servlet [jsp] threw exception
javax.el.PropertyNotFoundException: Property [id] not found on type [java.lang.String]
解决：jsp中输出的id与实体类的eid不一致<c:forEach items="list" var="emp">或者是<c:forEach items="list" var="emp">items中应该写成${list }
<td>${emp.id }</td>
15.Caused by: org.hibernate.MappingException: Duplicate property mapping of ename found in com.ssh.entity.Emp
解决：xxx.hbm.xml映射文件中有重复字段
16.HTTP Status 500 - not-null property references a null or transient value : com.ssh.entity.Emp.esex; nested exception is org.hibernate.PropertyValueException: not-null property references a null or transient value : com.ssh.entity.Emp.esex
解决：是xxx.hbm.xml中的属性设置为不能为空，但是我前台表单中的数据填写为空了。
17.org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Unnamed bean definition specifies neither ‘class‘ nor ‘parent‘ nor ‘factory-bean‘ - can‘t generate bean name
Offending resource: class path resource [springmvc.xml]
解决：由于：bean 没有配置完整，少了class等属性的配置或者配置了空的bean<bean></bean>
18.java.lang.IllegalArgumentException: Expected MultipartHttpServletRequest: is a MultipartResolver configured?
解决：这是因为找不到multipartReslover的原因，在springMVC配置文件配置它的时候，不能用其他名字，只能用指定名字id="multipartResolver"，否则就出现这种找不到的错误。
Caused by: 元素类型为 "struts" 的内容必须匹配 "((package|include|bean|constant)*,unknown-handler-stack?)"。 - file:/E:/JavaDeveleper/apache-tomcat-9.0.0.M22/webapps/shop/WEB-INF/classes/struts.xml:17:10
解决：Struts.xml配置文件中的action要写在package中
19.java.lang.NoSuchMethodException: com.opensymphony.xwork2.ActionSupport.listAll()
解决：spring.xml核心配置文件忘记配置给应类的Javabean实例化
20.Caused by: Action class [userAction] not found - action - file:/C:/Users/smfx1314/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/sshtest/WEB-INF/classes/struts.xml:7:63
java.lang.NoSuchMethodException: com.ssh.action.UserAction.save()
解决：原因是缺少jar包：struts2-spring-plugin-2.1.8.jar或者清理缓存，project
21.There is no Action mapped for namespace [/] and action name [delete] associated with context path [/sshtest]. - [unknown location]
解决：Struts.xml中的action方法使用的是user_*的方式，在jsp页面中或其他请求中没有按照user_*的方式请求，加上前缀user就可以了