Springmvc + hibernate is a simple example.

Springmvc + hibernate is a simple example.

I just entered a new company and saw that all the projects were in the form of webservice + springmvc. I used Struts all the time before. I think it is necessary to record it. Because I have recorded the annotation injection method before, but I have not been in touch with it for so long, and I forget it. Fortunately, I recorded it in my blog.

Environment: spring4.0.4.RELEASE, hibernate4.3.10Final. The packages are all downloaded on the official website.

Springmvc + hibernate made by eclipse + mysql adopts the annotation form.

 

OK. Let's start with the next step.

Eclipse first sets up a web project. If you use web3.0, you need to create web. xml (not created by default)

First, let's take a look at web. xml.

 
 
  
   
Springmvc
  
  
   
    
ContextConfigLocation
   
   
    
Classpath: spring-beans.xml
   
  
  
   
    
Org. springframework. web. context. ContextLoaderListener
   
  
  
  
   
    
EncodingFilter
   
   
    
Org. springframework. web. filter. CharacterEncodingFilter
   
   
    
     
Encoding
    
    
     
UTF-8
    
   
  
  
  
   
    
OpenSessionInViewFilter
   
   
    
Org. springframework. orm. hibernate4.support. OpenSessionInViewFilter
   
   
    
     
SessionFactoryBeanName
    
    
     
SessionFactory
    
   
  
  
   
    
OpenSessionInViewFilter
   
   
    
*. Do
   
  
  
  
   
    
Springmvc
   
   
    
Org. springframework. web. servlet. DispatcherServlet
   
   
    
1
   
  
  
   
    
Springmvc
   
   
    
*. Do
   
  
  
   
    
Index.html
   
   
    
Index.htm
   
   
    
Index. jsp
   
   
    
Default.html
   
   
    
Default.htm
   
   
    
Default. jsp
   
  
 

 

Springmvc the servlet name is associated with the configuration file under the WEB-INF, the naming method is [servletname]-servlet. xml, I am here springmvc.

Creating a WEB-INF under a springmvc-servlet.xml is as follows:

 

The view parser divides the prefix suffix and then merges it with the string returned by your controller to form a page path. (All are modifiable paths)

Put it under the WEB-INF just for safety.

Basically, springmvc needs to be configured.

The controller code is as follows:

/****@authorDaven.Tsang**/@ControllerpublicclassHelloController{@Resource(name=userService)privateUserServiceuserService;/****@paramname*@parammodel*@return*/@RequestMapping(value=/hello.do)publicStringsayHello(Modelmodel){Stringsql=fromUser;List
 
  users=userService.findAll(sql);model.addAttribute(users,users);returnhello;}}
 

 

UserService is injected into the business. My current code is divided into three layers, dao, service, controller (equivalent to the previous action) can also be said to be a view. Only the controller is used to control the view.

The returned value "hello" is as mentioned above. It defines the path of a page together with the prefix + hello + suffix.

See index. jsp and hello. jsp.

Index. jsp is as follows:

 

 

 

If your user class has these attributes, you can get the parameters directly in the controller. (Automatic encapsulation)

 

Hello. jsp

 

$ {S. user_name}

 

Download the project.

Basically, such a project is ready.