JSON?? Java ?? ?? ??: ??? ??

JSON ???? Java ?? ??? ???? ?? ??? ??????? ???? ?????. ? ??? ??? Java ????? ????? ????? ??? ??? ???? ? ??? ?? ???? ???? ????.

??? 1: POJO? ?? JSON ???(jsonschema2pojo)

Java ??? ?? ?? ?? ??? JSON? ???? jsonschema2pojo ?????. ? ?? ?? ????? JSON ??? ??? ???? ???? ??? ???? ???? Java ???? ?????. Jsonschema2pojo? ???? ?? ????? Maven ????? ?? Maven ????? ??? ? ????.

jsonschema2pojo? Maven ??

jsonschema2pojo Maven ????? ????? pom? ?? ??? ?????. xml ??:

<plugin>
    <groupId>org.jsonschema2pojo</groupId>
    <artifactId>jsonschema2pojo-maven-plugin</artifactId>
    <version>1.0.2</version>
    <configuration>
        <sourceDirectory>${basedir}/src/main/resources/schemas</sourceDirectory>
        <targetPackage>com.myproject.jsonschemas</targetPackage>
        <sourceType>json</sourceType>
    </configuration>
    <executions>
        <execution>
            <goals>
                <goal>generate</goal>
            </goals>
        </execution>
    </executions>
</plugin>

? ????? JSON ??? ??? ??? ?????. "src/main/resources/schemas" ????? ?? ??? Java ???? "com.myproject.jsonschemas" ???? ?????.

?? ? ?? ??

??? ?????. ?? JSON ??:

{
  "firstName": "John",  
  "lastName": "Smith",  
  "address": {  
    "streetAddress": "21 2nd Street",  
     "city": "New York"
  }
}

jsonschema2pojo? ???? ??? Java ??? ??? ????. like:

class Address  {
    JSONObject mInternalJSONObject;
     
    Address (JSONObject json){
        mInternalJSONObject = json;
    }
     
    String  getStreetAddress () {
        return mInternalJSONObject.getString("streetAddress");
    }
    
    String  getCity (){
        return mInternalJSONObject.getString("city");
    }
}

class Person {        
    JSONObject mInternalJSONObject;
    
    Person (JSONObject json){
        mInternalJSONObject = json;
    }
    
    String  getFirstName () {
        return mInternalJSONObject.getString("firstName");
    }
    
    String  getLastName (){
        return mInternalJSONObject.getString("lastName");
    }
    
    Address getAddress (){
        return Address(mInternalJSONObject.getString("address"));
    }
}

? ??? ??? JSON ???? Java ??? ????? ??? ??? ??? ?? ???? ? ??? ???.

??

jsonschema2pojo? ?? ??? ????, Java ???? JSON?? Java ??? ??? ????? ???? ???? ?? ???? ??? ? ????. ?? ?? ?? ??? ?? ????? ???? ?? ? ??????? ??? ??? ? ????.

? ??? JSON ????? Java ?? ??? ????? ??? ?? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!