SSH集成常见问题。锦囊！谢谢大家把自己的错误以及解决方案贴出来。

1.  
org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save():  
原 因：<id>元素配置不正确，<id>元素缺少其子元 素<generator></generator>的配置。解决方法：<id>元素映射了相应数据库表的主键字段， 对其子元素<generator class="">,其中class的取值可以为increment、identity、sequence、hilo、native...... 等，一般取其值为native 。  
2.  
java.lang.IllegalArgumentException: id to load is required for loading  
方案:Users user=(Users)this.getHibernateTemplate().get(Users.class, id);如果以用户名为参数不能用此方法  
3.  
org.springframework.dao.InvalidDataAccessResourceUsageException: could not execute query; nested exception is org.hibernate.exception.SQLGrammarException: could not execute query  
方案：sql语句有错误  
4.  
严重: Error starting static Resources  
java.lang.IllegalArgumentException: Document base D:/Program Files/Apache Software Foundation/Tomcat 5.0/webapps/tomcat-docs does not exist or is not a readable directory  
严重: Error in resourceStart()  
2007-6-6 23:32:25 org.apache.catalina.core.StandardContext start  
严重: Error getConfigured  
2007-6-6 23:32:25 org.apache.catalina.core.StandardContext start  
严重: Context startup failed due to previous errors  
2007-6-6 23:32:25 org.apache.catalina.core.StandardContext start  
严重: Exception during cleanup after start failed  
LifecycleException: Container StandardContext[/tomcat-docs] has not been started  
5.jsf+spring+hibernate  
严 重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener  
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/apache/commons/pool/impl/GenericObjectPool  
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/pool/impl/GenericObjectPool  
严重: Error listenerStart  
2007-6-8 10:31:55 org.apache.catalina.core.StandardContext start  
严重: Context [/shj01] startup failed due to previous errors  
2007-6-8 10:31:55 org.apache.catalina.core.ApplicationContext log  
方案：spring-framework-2.0.5/lib/jakarta-commons下的commons-collections.jar commons-dbcp.jar commons-pool.jar加载到工程去  
6.  
严重: Exception sending context initialized event to listener instance of class com.sun.faces.config.ConfigureListener  
javax.faces.FacesException: Can't parse configuration file:jar:file:/E:/工具/apache-tomcat-6.0.9/apache-tomcat-6.0.9/webapps /jsf02/WEB-INF/lib/jsf-impl.jar!/com/sun/faces/standard-html-renderkit.xml  
方案：把tomcat的安装文件换了位置就没事了  
7.spring MVC+hibernate  
严重: StandardWrapper.Throwable  
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: org.objectweb.asm.ClassVisitor.visit(IILjava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)V  
Caused by: java.lang.NoSuchMethodError: org.objectweb.asm.ClassVisitor.visit(IILjava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)V  
方案：  
在使用Spring的AOP编程时，会用到这几个lib：  
asm-2.2.2.jar  
asm-commons-2.2.2.jar  
asm-util-2.2.2.jar  
Hibernate使用如果lib：  
asm.jar  
asm-attrs.jar  
其中asm-2.2.2.jar与asm.jar存在类上的冲突！！！  
使用其中之一或两者都使用，可能会出现如下错误：  
java.lang.NoClassDefFoundError: org/objectweb/asm/CodeVisitor  
java.lang.NoClassDefFoundError: org/objectweb/asm/commons/EmptyVisitor  
java.lang.NoSuchMethodError: org.objectweb.asm.ClassVisitor.visit。。。。。。  
解决办法是：  
1.去掉类路径上的关于Hibernate的3个lib  
asm.jar  
asm-attrs.jar  
cglib-2.1.3.jar  
2.加入Spring中的以下4个lib  
asm-2.2.2.jar  
asm-commons-2.2.2.jar  
asm-util-2.2.2.jar  
cglib-nodep-2.1_3.jar  
8.spring MVC+hibernate  
Exception in thread "main" org.springframework.dao.InvalidDataAccessResourceUsageException: Could not execute JDBC batch update; nested exception is org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update  
Caused by: org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update  
9.  
org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.springframework.transaction.interceptor.TransactionProxyFactoryBean] for bean with name 'userService' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: problem with class file or dependent class; nested exception is java.lang.NoClassDefFoundError: org/springframework/aop/framework/AbstractSingletonProxyFactoryBean  
Caused by: java.lang.NoClassDefFoundError: org/springframework/aop/framework/AbstractSingletonProxyFactoryBean 
方案：没加 spring 2.0 aop libraries  
10.  
org.apache.jasper.JasperException: Unable to compile class for JSP:  
方案：jsp网页中的java代码有问题  
11.  
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'CompanyController' defined in class path resource [com/company/test/company-config.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'methodNameResolver' of bean class [com.company.action.CompanyController]: Bean property 'methodNameResolver' 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 'methodNameResolver' of bean class [com.company.action.CompanyController]: Bean property 'methodNameResolver' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?  


控制器没继承MultiActionController  

12.  


Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'turDiffService' defined in class path resource [com/expert/test/expert-config.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'turDifficultDao' of bean class [com.expert.operation.impl.TurDiffSerImpl]: Bean property 'turDifficultDao' is not writable or has an invalid setter method. Did you mean 'truDifficultDao'?  
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'turDifficultDao' of bean class [com.expert.operation.impl.TurDiffSerImpl]: Bean property 'turDifficultDao' is not writable or has an invalid setter method. Did you mean 'truDifficultDao'?  
原因：  
在定义时TurDifficultDao turDifficultDao ，把有个字母写错，后发现错误，改过来了，但没把get() set()方法中对应的改过来  

13.  

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'urlMapping' defined in class path resource [com/expert/test/expert-config.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named '' is defined  
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named '' is defined  


原因：  
在expert-config.xml中创建  
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">  
  <property name="mappings">  
  <props>  
    
  <prop key=""></prop>  
    
  </props>  
  </property>  
</bean>  
没有给<prop key=""></prop>赋值  

14.  

org.springframework.orm.hibernate3.HibernateQueryException: Instruction is not mapped  

[from Instruction]; nested exception is org.hibernate.hql.ast.QuerySyntaxException:  

Instruction is not mapped [from Instruction]  
Caused by: org.hibernate.hql.ast.QuerySyntaxException: Instruction is not mapped [from  

Instruction]  
原因：在data-config.xml中没加入<value>com/serializ/Instruction.hbm.xml</value>  
15.  

java.sql.SQLException: Field 'userId' doesn't have a default value  
原 因：把配置文件的主键改为<generator class="assigned" /> 可以进行自定义主键值，因为我在设主键时没有设成自动增长的，要求填默认值是受了配置文件里<generator class="native"/>的影响了。  

16.org.apache.jasper.JasperException: Unable to compile class for JSP  

原因：jsp页面中的java代码括号不对称！