How Dubbo generalization refers to
This article mainly introduces "how to quote Dubbo generalization". In daily operation, I believe many people have doubts about how to quote Dubbo generalization. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to quote Dubbo generalization". Next, please follow the editor to study!
The pan-interface invocation mode is mainly used when the client has no API interface and model class elements. The POJO used in the parameters and return values are expressed by Map, which is usually used for framework integration, such as implementing a general service testing framework, which can be implemented by invoking all services through GenericService.
The implementation code is as follows:
Server-side code:
Package com.dubbo.entity
Import java.io.Serializable
Public class Computer implements Serializable {
Private static final long serialVersionUID = 1L
Private Integer id
Private String name
Public Integer getId () {
Return id
}
Public void setId (Integer id) {
This.id = id
}
Public String getName () {
Return name
}
Public void setName (String name) {
This.name = name
}
}
Package com.dubbo.entity
Import java.io.Serializable
Public class User implements Serializable {
Private static final long serialVersionUID = 1L
Private Integer id
Private String name
Private Computer computer
Public Integer getId () {
Return id
}
Public void setId (Integer id) {
This.id = id
}
Public String getName () {
Return name
}
Public void setName (String name) {
This.name = name
}
Public Computer getComputer () {
Return computer
}
Public void setComputer (Computer computer) {
This.computer = computer
}
}
Package com.dubbo.service
Import com.dubbo.entity.User
Public interface IDubboGenQService {
Public User queryUser (Integer id)
Public void saveUser (User user)
}
Package com.dubbo.service.impl
Import com.dubbo.entity.Computer
Import com.dubbo.entity.User
Import com.dubbo.service.IDubboGenQService
Public class DubboGenQServiceImpl implements IDubboGenQService {
Public User queryUser (Integer id) {
User user=new User ()
User.setId (id)
User.setName ("Zhang San" + id)
Computer computer=new Computer ()
Computer.setId (id)
Computer.setName ("Zhang San's computer")
User.setComputer (computer)
Return user
}
Public void saveUser (User user) {
System.out.println ("user saved")
System.out.println (user.getName ())
System.out.println (user.getComputer () .getName ())
}
Dubbo.xml configuration:
Dubbo provider launch
Public class dubboServerStart {
Public static void main (String [] args) throws Exception {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext ("dubbo.xml")
Context.start ()
System.in.read ()
}
}
Client implementation:
Import java.io.IOException
Import java.util.HashMap
Import java.util.Map
Import org.springframework.context.ApplicationContext
Import org.springframework.context.support.ClassPathXmlApplicationContext
Import com.alibaba.dubbo.rpc.service.GenericService
Public class DubboClientStart {
Public static void main (String [] args) throws IOException {
ApplicationContext ctx=new ClassPathXmlApplicationContext ("dubbo.xml")
GenericService genericService= (GenericService) ctx.getBean ("dubboGenQService")
Object resultUser = genericService.$invoke ("queryUser"
New String [] {"java.lang.Integer"}
New Object [] {1})
HashMap userMap= (HashMap) resultUser
For (Map.Entry entry1: userMap.entrySet ()) {
If (entry1.getValue () instanceof HashMap) {
HashMap computerMap= (HashMap) entry1.getValue ()
System.out.println (entry1.getKey ())
For (Map.Entry entry: computerMap.entrySet ()) {
System.out.println ("\ t" + entry.getValue ())
}
} else {
System.out.println (entry1.getKey () + "+ entry1.getValue ())
}
}
/ / demonstrate the encapsulation of user data
Map user = new HashMap ()
User.put ("name", "Zhang San")
HashMap value = new HashMap ()
Value.put ("name", "Zhang San's computer")
User.put ("computer", value)
GenericService.$invoke ("saveUser", new String [] {"com.dubbo.entity.User"})
New Object [] {user})
}
}
Dubbo.xml configuration:
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