ssm中500错误之前还可以正常使用突然就不行了

这是错误
Request processing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.user.dao.UserDao' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotationsjavax.annotation.Resource(shareable=true, lookup=, name=, description=, authenticationType=CONTAINER, type=class java.lang.Object, mappedName=)}

这是配置



class="org.springframework.format.support.FormattingConversionServiceFactoryBean">







class="org.springframework.web.multipart.commons.CommonsMultipartResolver">






这是mybatis的配置



classpath:mapper/*.xml

    这是dao

@Repository
public interface UserDao {
public User findUserByUserNameAndPassword(@Param("userName") String userName, @Param("password") String password);
public int addUser(User user);
}

这是service 接口没贴出来就两个方法
@Service
public class UserServiceImpl implements UserService {
@Resource
private UserDao userDao;

public User login(String userName, String password) {
    return userDao.findUserByUserNameAndPassword(userName, password);
}

public Integer register(User user) {
    return userDao.addUser(user);
}

    这是controller 
    @Scope(value="prototype")

@RequestMapping("/user")
@Controller
public class UserController {
@Resource
private UserService userService;
@RequestMapping("toLogin")
public String toLogin(){
System.out.println("1111111111");
return "user/login";
}
这是web.xml
Archetype Created Web Application

dispatcherServlet
org.springframework.web.servlet.DispatcherServlet

contextConfigLocation
classpath:spring-mvc.xml

1

dispatcherServlet
*.do

index.jsp

    tomcat可以运行 到首页放问toLogin.do就出错 不知道什么原因 跪求解答

@Resource
private UserDao userDao;
把这个resource改成@Autowired试试

UserController的bean配置prototype是算认为懒加载的，即每次调用的时候才会创建bean，所以你启动服务器没问题，登录时候依赖到UserController就因为bean创建失败报错了。错误提示说userService没有指定userDao导致了这个错误，可能是userDao生成出了问题，你把mtbatis的配置文件贴出来看一下

resource是responsebody和Autowired的结合，所以看情况而定，用Autowired试试

我是楼主这是mybaitis 的配置
<?xml version="1.0" encoding="UTF-8"?>
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd" >

classpath:mapper/*.xml

classpath:mapper/*.xml

我也发生这个情况，之前ssm项目还正常使用，放几天就坏了报500找不到Action，原因是eclipse
，你使用spring定制版eclipse吧，和eclipse一样，修复了很多bug，你重新创建一个项目，把代码粘进去，就好了
https://spring.io/tools3/sts/legacy STS各种版本

ssm中500错误 之前还可以正常使用 突然就不行了

ssm中500错误之前还可以正常使用突然就不行了